10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2023.

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

SUN COMMUNITIES, INC.

(Exact Name of Registrant as Specified in its Charter)

Maryland	1-12616	38-2730780
(State of Incorporation)	Commission file number	(I.R.S. Employer Identification No.)

27777 Franklin Rd,	Suite 300,	Southfield,	Michigan	48034
(Address of Principal Executive Offices)				(Zip Code)

(248) 208-2500

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value	SUI	New York Stock Exchange

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes ☒  No ☐

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).  Yes ☒  No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in rule 12b-2 of the Exchange Act.

Large accelerated filer	Accelerated filer	Non-accelerated filer	Smaller reporting company	Emerging growth company
☒	☐	☐	☐	☐

If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐  No ☒

Number of shares of Common Stock, $0.01 par value per share, outstanding as of April 20, 2023: 124,408,144

INDEX

PART I – FINANCIAL INFORMATION
Item 1.	Consolidated Financial Statements
	Consolidated Balance Sheets as of March 31, 2023 (Unaudited) and December 31, 2022	1
	Consolidated Statements of Operations for the Three Months Ended March 31, 2023 and 2022 (Unaudited)	2
	Consolidated Statements of Comprehensive Income / (Loss) for the Three Months Ended March 31, 2023 and 2022 (Unaudited)	3
	Consolidated Statements of Equity for the Three Months Ended March 31, 2023 and 2022 (Unaudited)	4
	Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2023 and 2022 (Unaudited)	5
	Notes to Consolidated Financial Statements (Unaudited)	7
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	38
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	58
Item 4.	Controls and Procedures	59
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings	60
Item 1A.	Risk Factors	60
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	61
Item 6.	Exhibits	62
	Signatures	63

SUN COMMUNITIES, INC.

PART I - FINANCIAL INFORMATION

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS

CONSOLIDATED BALANCE SHEETS

(In millions, except for per share amounts)

	(Unaudited)
	March 31, 2023		December 31, 2022
Assets
Land	$	3,974.1	$	4,322.3
Land improvements and buildings	11,202.1		10,903.4
Rental homes and improvements	672.8		645.2
Furniture, fixtures and equipment	869.7		839.0
Investment property	16,718.7		16,709.9
Accumulated depreciation	(2,867.9)		(2,738.9)
Investment property, net (see Note 7 at VIEs)	13,850.8		13,971.0
Cash, cash equivalents and restricted cash (see Note 7 at VIEs)	74.8		90.4
Marketable securities (see Note 15)	105.5		127.3
Inventory of manufactured homes	232.5		202.7
Notes and other receivables, net	716.7		617.3
Goodwill	1,092.6		1,018.4
Other intangible assets, net (see Note 7 at VIEs)	392.7		402.0
Other assets, net (see Note 7 at VIEs)	898.2		655.1
Total Assets	$	17,363.8	$	17,084.2
Liabilities
Secured debt (see Note 8; Note 7 at VIEs)	$	3,386.4	$	3,217.8
Unsecured debt (see Note 8; Note 7 at VIEs)	4,075.6		3,979.4
Distributions payable	118.0		111.3
Advanced reservation deposits and rent (see Note 7 at VIEs)	433.8		352.1
Accrued expenses and accounts payable (see Note 7 at VIEs)	340.9		396.3
Other liabilities (see Note 7 at VIEs)	940.1		935.9
Total Liabilities	9,294.8		8,992.8
Commitments and contingencies (see Note 16)
Temporary equity (see Note 9; Note 7 at VIEs)	298.9		202.9
Shareholders' Equity
Common stock, $0.01 par value. Authorized: 180.0 shares; Issued and outstanding: 124.4 at March 31, 2023 and 124.0 at December 31, 2022	1.2		1.2
Additional paid-in capital	9,556.4		9,549.7
Accumulated other comprehensive income / (loss)	7.7		(9.9)
Distributions in excess of accumulated earnings	(1,875.0)		(1,731.2)
Total SUI shareholders' equity	7,690.3		7,809.8
Noncontrolling interests
Common and preferred OP units	79.8		78.7
Total noncontrolling interests	79.8		78.7
Total Shareholders' Equity	7,770.1		7,888.5
Total Liabilities, Temporary Equity and Shareholders' Equity	$	17,363.8	$	17,084.2

See accompanying Notes to Consolidated Financial Statements.

1

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In millions, except for per share amounts) (Unaudited)

	Three Months Ended
	March 31, 2023		March 31, 2022
Revenues
Real property	$	441.4	$	387.8
Home sales	86.3		64.7
Service, retail, dining and entertainment	102.6		81.2
Interest	11.4		6.8
Brokerage commissions and other, net	9.5		8.0
Total Revenues	651.2		548.5
Expenses
Property operating and maintenance	156.6		124.1
Real estate tax	30.1		26.1
Home costs and selling	63.2		45.9
Service, retail, dining and entertainment	100.0		75.7
General and administrative	63.9		55.7
Catastrophic event-related charges, net	1.0		—
Business combinations	2.8		0.5
Depreciation and amortization	158.0		148.5
Loss on extinguishment of debt (see Note 8)	—		0.3
Interest	76.6		45.2
Interest on mandatorily redeemable preferred OP units / equity	1.0		1.0
Total Expenses	653.2		523.0
Income / (Loss) Before Other Items	(2.0)		25.5
Loss on remeasurement of marketable securities (see Note 15)	(19.9)		(34.5)
Loss on foreign currency exchanges	(2.7)		(2.2)
Gain / (loss) on dispositions of properties	(1.6)		13.4
Other expense, net	(1.0)		(0.6)
Gain / (loss) on remeasurement of notes receivable (see Note 4)	(1.7)		0.2
Income / (loss) from nonconsolidated affiliates (see Note 6)	(0.2)		0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates (see Note 6)	(4.5)		0.1
Current tax expense (see Note 12)	(3.9)		(1.3)
Deferred tax benefit (see Note 12)	4.6		—
Net Income / (Loss)	(32.9)		1.5
Less: Preferred return to preferred OP units / equity interests	2.4		3.0
Less: Loss attributable to noncontrolling interests	(5.2)		(2.2)
Net Income / (Loss) Attributable to SUI Common Shareholders	$	(30.1)	$	0.7
Weighted average common shares outstanding - basic	123.3		115.3
Weighted average common shares outstanding - diluted	126.2		115.9
Basic earnings / (loss) per share (see Note 13)	$	(0.24)	$	0.01
Diluted earnings / (loss) per share (see Note 13)	$	(0.24)	$	0.01

See accompanying Notes to Consolidated Financial Statements.

2

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME / (LOSS)

(In millions) (Unaudited)

	Three Months Ended
	March 31, 2023		March 31, 2022
Net Income / (Loss)	$	(32.9)	$	1.5
Foreign Currency Translation:
Foreign currency translation gain / (loss) arising during period	17.2		(1.3)
Adjustment for foreign currency translation (gain) / loss reclassified into earnings	11.9		—
Net foreign currency translation gain / (loss)	29.1		(1.3)
Cash Flow Hedges:
Change in unrealized gain / (loss) on interest rate derivatives	(8.6)		24.1
Less: interest rate derivative (gain) / loss reclassified to earnings	(2.3)		1.1
Net unrealized gain / (loss) on interest rate derivatives	(10.9)		25.2
Total Comprehensive Income / (Loss)	(14.7)		25.4
Less: Comprehensive loss attributable to noncontrolling interests	4.6		1.1
Comprehensive Income / (Loss) attributable to SUI	$	(10.1)	$	26.5

See accompanying Notes to Consolidated Financial Statements.

3

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY

(In millions) (Unaudited)

				Stockholders' Equity
	Temporary Equity		Common Stock Shares	Common Stock		Additional Paid-in Capital		Distributions in Excess of Accumulated Earnings		Accumulated Other Comprehensive Income		Non-controlling Interests		Total Stockholders' Equity		Total Equity
Balance at December 31, 2022	$	202.9	124.0	$	1.2	$	9,549.7	$	(1,731.2)	$	(9.9)	$	78.7	$	7,888.5	$	8,091.4
Issuance of common stock and common OP units, net	—		0.4	—		—		—		—		4.4		4.4		4.4
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards	—		(0.1)	—		(11.0)		—		—		—		(11.0)		(11.0)
Conversion of OP units	—		0.1	—		7.3		—		—		—		7.3		7.3
Issuance of third party equity interests in consolidated entities	1.7		—	—		—		—		—		—		—		1.7
Share-based compensation - amortization and forfeitures	—		—	—		10.4		—		—		—		10.4		10.4
Issuance of Series K preferred OP units	100.0		—	—		—		—		—		—		—		100.0
Other comprehensive income	—		—	—		—		—		17.6		0.6		18.2		18.2
Net loss	(4.4)		—	—		—		(27.7)		—		(0.8)		(28.5)		(32.9)
Distributions	(1.6)		—	—		—		(115.8)		—		(3.1)		(118.9)		(120.5)
OP Units accretion	0.3		—	—		—		(0.3)		—		—		(0.3)		—
Balance at March 31, 2023	$	298.9	124.4	$	1.2	$	9,556.4	$	(1,875.0)	$	7.7	$	79.8	$	7,770.1	$	8,069.0

				Stockholders' Equity
	Temporary Equity		Common Stock Shares	Common Stock		Additional Paid-in Capital		Distributions in Excess of Accumulated Earnings		Accumulated Other Comprehensive Income		Non-controlling Interests		Total Stockholders' Equity		Total Equity
Balance at December 31, 2021	$	288.9	116.0	$	1.2	$	8,175.6	$	(1,556.0)	$	3.1	$	106.7	$	6,730.6	$	7,019.5
Issuance of common stock and common OP units, net	—		0.3	—		(0.2)		—		—		2.8		2.6		2.6
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards	—		(0.1)	—		(16.4)		—		—		—		(16.4)		(16.4)
Conversion of OP units	—		—	—		0.7		—		—		(0.7)		—		—
Share-based compensation - amortization and forfeitures	—		—	—		9.7		0.1		—		—		9.8		9.8
Other comprehensive income	—		—	—		—		—		22.8		1.1		23.9		23.9
Net income / (loss)	(3.1)		—	—		—		3.7		—		0.9		4.6		1.5
Distributions	(2.1)		—	—		—		(102.3)		—		(3.1)		(105.4)		(107.5)
OP Units accretion	0.2		—	—		—		(0.1)		—		—		(0.1)		0.1
Balance at March 31, 2022	$	283.9	116.2	$	1.2	$	8,169.4	$	(1,654.6)	$	25.9	$	107.7	$	6,649.6	$	6,933.5

See accompanying Notes to Consolidated Financial Statements.

4

SUN COMMUNITIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In millions) (Unaudited)

	Three Months Ended
	March 31, 2023		March 31, 2022
Operating Activities
Net Cash Provided By Operating Activities	$	194.5	$	225.7
Investing Activities
Investment in properties	(301.8)		(182.7)
Acquisitions, net of cash acquired	(47.9)		(299.0)
Proceeds from deposit on acquisition	1.4		—
Proceeds from insurance	4.9		—
Proceeds from disposition of assets and depreciated homes, net	15.5		24.7
Proceeds related to disposition of properties	0.2		0.1
Issuance of notes and other receivables	(6.2)		(25.8)
Repayments of notes and other receivables	3.3		1.3
Investments in nonconsolidated affiliates	(2.7)		(6.4)
Distributions of capital from nonconsolidated affiliates	11.4		3.6
Net Cash Used For Investing Activities	(321.9)		(484.2)
Financing Activities
Issuance and costs of common stock, OP units and preferred OP units, net	—		(0.2)
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards	(11.0)		(16.4)
Borrowings on lines of credit	626.0		474.7
Payments on lines of credit	(951.1)		(58.2)
Proceeds from issuance of other debt	583.0		0.9
Contributions from noncontrolling interest	1.7		—
Payments on other debt	(19.8)		(15.4)
Fees paid in connection with extinguishment of debt	—		(0.3)
Proceeds received from return of prepaid deferred financing costs	2.0		—
Distributions	(113.6)		(101.4)
Payments for deferred financing costs	(5.6)		(0.8)
Net Cash Provided By Financing Activities	111.6		282.9
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.2		—
Net change in cash, cash equivalents and restricted cash	(15.6)		24.4
Cash, cash equivalents and restricted cash, beginning of period	90.4		78.2
Cash, Cash Equivalents and Restricted Cash, End of Period	$	74.8	$	102.6

5

SUN COMMUNITIES, INC.

	Three Months Ended
	March 31, 2023		March 31, 2022
Supplemental Information
Cash paid for interest (net of capitalized interest of $2.5 and $1.0, respectively)	$	72.2	$	46.2
Cash paid for interest on mandatorily redeemable debt	$	1.0	$	1.0
Cash paid for income taxes	$	10.0	$	0.1
Noncash investing and financing activities
Change in distributions declared and outstanding	$	6.9	$	6.0
Conversion of common and preferred OP units	$	7.3	$	0.7
Assets held for sale	$	262.1	$	—
Proceeds related to disposition of properties through 1031 exchange	$	—	$	28.7
ROU asset obtained from new operating lease liabilities	$	0.2	$	—
Issuance of notes and other receivables in relation to disposition of properties	$	111.2	$	—
Noncash investing and financing activities at the date of acquisition
Acquisitions - Common stock and OP units issued	$	4.5	$	2.8
Acquisitions - Series K preferred interest	$	100.0	$	—

See accompanying Notes to Consolidated Financial Statements.

6

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. Basis of Presentation

Sun Communities, Inc., a Maryland corporation, and all wholly-owned or majority-owned and controlled subsidiaries, including Sun Communities Operating Limited Partnership (the "Operating Partnership"), Sun Home Services, Inc. ("SHS"), Safe Harbor Marinas, LLC ("Safe Harbor") and Sun UK Holding LLC (together with its subsidiaries, "Park Holidays") are referred to herein as the "Company," "SUI," "we," "us," and "our."

We follow accounting standards set by the Financial Accounting Standards Board ("FASB"). FASB establishes accounting principles generally accepted in the United States of America ("GAAP"), which we follow to ensure that we consistently report our financial condition, results of operations and cash flows. References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification ("ASC"). These unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for interim financial information and in accordance with GAAP. We present interim disclosures and certain information and footnote disclosures as required by SEC rules and regulations. Accordingly, the unaudited Consolidated Financial Statements do not include all of the information and footnotes required by GAAP for complete financial statements. The accompanying unaudited Consolidated Financial Statements reflect, in the opinion of management, all adjustments, including adjustments of a normal and recurring nature, necessary for a fair presentation of the interim financial statements. All significant intercompany transactions have been eliminated in consolidation.

Certain prior period amounts have been reclassified to conform with current presentation, with no effect on net income. These include reclassification of certain revenues and expenses between Real property and Service, retail, dining and entertainment within our Marina segment. There was no impact to prior period net income, shareholders equity or cash flows for any of the reclassifications. Further, the reclassification had no impact on previously reported total marina net operating income ("NOI").

The results of operations for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022 as filed with the SEC on February 23, 2023 (our "2022 Annual Report"). These statements have been prepared on a basis that is substantially consistent with the accounting principles applied in our 2022 Annual Report.

Our three reportable segments are: (i) Manufactured home ("MH") communities, (ii) Recreational vehicle ("RV") communities and (iii) Marinas.

2. Revenue

The following table disaggregates our revenue by major source and segment (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Revenues
Real property	$	252.9	$	99.6	$	88.9	$	441.4	$	208.8	$	102.7	$	76.3	$	387.8
Home sales	79.9		6.4		—		86.3		58.0		6.7		—		64.7
Service, retail, dining and entertainment	5.4		5.8		91.4		102.6		2.3		7.3		71.6		81.2
Interest	10.3		0.9		0.2		11.4		6.2		0.6		—		6.8
Brokerage commissions and other, net	4.2		4.4		0.9		9.5		4.2		3.5		0.3		8.0
Total Revenues	$	352.7	$	117.1	$	181.4	$	651.2	$	279.5	$	120.8	$	148.2	$	548.5

Our revenue consists of real property revenue at our MH, RV and Marina properties, revenue from Home sales, Service, retail, dining and entertainment revenue, Interest income, and Brokerage commissions and other revenue.

The majority of our revenue is derived from site and home leases, and wet slip and dry storage space leases that are accounted for pursuant to ASC 842, "Leases." We account for all revenue from contracts with customers following ASC 606, "Revenue from Contracts with Customers," except for those that are within the scope of other topics in the FASB ASC. For additional information, refer to Note 1, "Significant Accounting Policies," in our 2022 Annual Report.

7

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

3. Real Estate Acquisitions and Dispositions

2023 Acquisitions

During the three months ended March 31, 2023, we acquired the following properties:

Community Name	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Fox Run	MH: asset acquisition	68	72	MI	January
Savannah Yacht Center	Marina: asset acquisition	24	—	GA	March
	Total	92	72

The following table summarizes the amount of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed during the three months ended March 31, 2023 (in millions):

	At Acquisition Date								Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		Other assets, net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity(1)		Total consideration
Asset Acquisition
Fox Run(2)(3)	$	7.0	$	0.2	$	—	$	7.2	$	2.7	$	4.5	$	7.2
Savannah Yacht Center(2)(4)	100.0		—		4.5		104.5		4.5		100.0		104.5
Total	$	107.0	$	0.2	$	4.5	$	111.7	$	7.2	$	104.5	$	111.7

(1) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(2) The above allocations are estimates pending purchase price allocations.

(3) In conjunction with the acquisition, the Operating Partnership issued 31,289 common OP units valued at $4.5 million.

(4) In conjunction with the acquisition, the Operating Partnership issued one million Series K preferred OP units valued at $100.0 million.

As of March 31, 2023, we have incurred and capitalized $2.6 million of transaction costs, which have been allocated among various fixed asset categories for purchases that meet the asset acquisition criteria. During the three months ended March 31, 2023, we recognized $2.8 million of business combination expenses in connection with transactions completed during 2022.

2023 Development and Expansion Activities

During the three months ended March 31, 2023, we acquired three land parcels located in the United States ("U.S.") and United Kingdom ("UK") for an aggregate purchase price of $34.9 million.

2023 Dispositions

In February 2023, we sold two parcels of land in the UK for total consideration of $111.5 million, which primarily consisted of $108.8 million in the form of an operator note receivable that was added to an existing facility with a weighted average interest rate of 11.9% per annum, due May 31, 2023. On the date of sale, the carrying value of the note receivable approximates its fair value due to its short term nature. The dispositions resulted in a loss on sale totaling $1.6 million, net of the release of foreign currency translation losses from Accumulated other comprehensive income of $11.9 million. The total loss on sale was recorded in Gain / (loss) on dispositions of properties on the Consolidated Statements of Operations.

8

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Real Estate Held For Sale

We periodically classify real estate as "held for sale." An asset is classified as held for sale after an active program to sell an asset has commenced and when the sale is probable. Subsequent to the classification of assets as held for sale, no further depreciation expense is recorded.

In February 2023, we reached an agreement to sell an operating MH community in the UK with 730 developed sites for approximately $240.0 million in the form of a note receivable. As a result, the carrying value of total assets of $262.2 million and total liabilities of $64.0 million were reclassified to held for sale as of March 31, 2023. The held for sale assets primarily consist of Land and Land improvements and buildings and are recorded within Other assets, net on the Consolidated Balance Sheets. The held for sale liabilities primarily consist of Deferred tax liabilities and are recorded within Other liabilities on the Consolidated Balance Sheets.

2022 Acquisitions

For the year ended December 31, 2022, we acquired the following properties:

Property Name(1)	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Harrison Yacht Yard(2)	Marina: asset acquisition	21	—	MD	January
Outer Banks	Marina: asset acquisition	196	—	NC	January
Jarrett Bay Boatworks	Marina: business combination	12	—	NC	February
Tower Marine	Marina: asset acquisition	446	—	MI	March
Sandy Bay	MH: asset acquisition	730	456	UK	March
Park Holidays(3)	MH: business combination	15,906	608	UK	April
Christies Parks(2)	MH: asset acquisition	249	—	UK	April
Bluewater	Marina: asset acquisition	200	—	Multiple	April
Bluewater Yacht Sales(2)	Marina: business combination	—	—	Multiple	April
Bodmin Holiday Park	MH: asset acquisition	69	—	UK	April
Kittery Point	Marina: asset acquisition	62	—	ME	May
Spanish Trails MHC	MH: asset acquisition	195	6	AZ	June
Pine Acre Trails	MH: asset acquisition	251	603	TX	June
Bel Air Estates & Sunrise Estates(4)	MH: asset acquisition	379	—	CA	June
Park Leisure(5)	MH: business combination	2,914	123	UK	June
Montauk Yacht Club	Marina: business combination	232	—	NY	July
Callaly Leisure(6)	MH: asset acquisition	380	823	UK	September
Newhaven	MH: asset acquisition	224	14	UK	October
Bayfront Marina	Marina: asset acquisition	583	—	CA	November
Marina Bay Yacht Harbor	Marina: asset acquisition	800	—	CA	December
Jellystone Lincoln	RV: asset acquisition	267	—	DE	December
Norway Commons	MH: asset acquisition	231	22	ME	December
	Total	24,347	2,655

(1) Property names are subject to changes subsequent to acquisition.

(2) Combined with an existing property.

(3) Includes 40 owned and two managed properties.

(4) Includes two properties.

(5) Includes 11 properties.

(6) Includes one development property.

9

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

The following table summarizes the amounts of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2022 (in millions):

	At Acquisition Date										Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		In-place leases, goodwill and other intangible assets(1)		Other assets / (liabilities), net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity		Total consideration
Asset Acquisition
Harrison Yacht Yard(4)	$	5.8	$	—	$	—	$	—	$	5.8	$	5.8	$	—	$	5.8
Outer Banks	5.2		—		—		(0.4)		4.8		4.8		—		4.8
Tower Marine	20.2		—		0.2		(2.1)		18.3		18.3		—		18.3
Sandy Bay	247.9		9.4		2.1		(68.3)		191.1		191.1		—		191.1
Christies Parks(4)	10.1		—		—		2.1		12.2		12.2		—		12.2
Bluewater	25.3		1.3		0.1		1.3		28.0		28.0		—		28.0
Bodmin Holiday Park	13.1		—		—		—		13.1		13.1		—		13.1
Kittery Point	8.0		0.1		—		(0.1)		8.0		7.0		1.0		8.0
Spanish Trails MHC	20.6		1.8		—		—		22.4		22.4		—		22.4
Pine Acre Trails	29.7		—		—		—		29.7		29.7		—		29.7
Bel Air Estates & Sunrise Estates	39.3		—		0.7		—		40.0		40.0		—		40.0
Callaly Leisure	23.8		0.1		—		(0.3)		23.6		23.6		—		23.6
Newhaven	6.2		—		—		—		6.2		6.2		—		6.2
Bayfront Marina	11.3		—		0.9		(0.5)		11.7		11.7		—		11.7
Marina Bay Yacht Harbor	16.2		—		0.2		(0.7)		15.7		15.7		—		15.7
Jellystone Lincoln(5)	17.0		—		—		1.2		18.2		18.2		—		18.2
Norway Commons	15.1		0.4		0.3		—		15.8		15.8		—		15.8
Business Combination
Jarrett Bay Boatworks(6)	21.3		1.4		47.5		1.0		71.2		68.4		2.8		71.2
Park Holidays(7)	1,254.7		29.5		574.5		(624.9)		1,233.8		1,199.9		33.9		1,233.8
Park Leisure(8)	259.5		0.7		77.5		(111.9)		225.8		225.8		—		225.8
Montauk Yacht Club	163.6		0.3		26.3		0.3		190.5		190.5		—		190.5
Total	$	2,213.9	$	45.0	$	730.3	$	(803.3)	$	2,185.9	$	2,148.2	$	37.7	$	2,185.9

(1) Refer to Note 5, "Goodwill and Other Intangible Assets," for additional detail on goodwill and other intangible assets.

(2) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(3) Property names are subject to changes subsequent to acquisition.

(4) Combined with an existing property.

(5) In December 2020, we entered into a loan agreement pursuant to which we extended credit to Blue Water to finance the construction of Jellystone Lincoln (the "RV Park"). In December 2022, we entered into a purchase and sale agreement pursuant to which we purchased the RV Park for cash consideration of $5.0 million, which was applied toward the existing Blue Water loan balance of $12.9 million, and the remaining loan balance of $7.9 million was forgiven. Upon acquisition of the RV Park, we agreed to loan Blue Water an amount equal to $3.7 million, accounted as consideration based on the loan forgiveness terms. Additional consideration for vacation rental units of $0.4 million, resulted in a total purchase price of $17.0 million. In addition, we entered into a lease agreement pursuant to which Blue Water will pay rent to us and continue to operate the park.

(6) The balance includes the marina acquired in February and the yacht sales business acquired in April of which $0.1 million was recorded in Investment property, $17.6 million in Goodwill and other intangible assets, and $0.4 million in Other assets / (liabilities), net.

(7) Includes acquired intangible assets subject to amortization of $70.2 million with a weighted average amortization period of 14.6 years, consisting of trademarks and trade names, customer relationships and other intangible assets.

(8) The purchase price allocation is preliminary as of December 31, 2022, subject to revision based on the final purchase price allocations to be finalized one year from the acquisition date.

As of December 31, 2022, we incurred $19.2 million of transaction costs, which were capitalized and allocated among the various fixed asset categories for purchases that meet the asset acquisition criteria. As of December 31, 2022, we also incurred $24.7 million of business combination expenses, which were expensed for acquisitions deemed to be business combinations.

10

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Total revenues and Net income included in the Consolidated Statements of Operations for the year ended December 31, 2022 related to business combinations completed in 2022 are set forth in the following table (in millions):

	Year Ended
	December 31, 2022
Total revenues	$	353.6
Net income	$	13.8

The following unaudited pro forma financial information presents the results of our operations for the year ended December 31, 2022, as if the properties combined through business combinations in 2022 had been acquired on January 1, 2021. The unaudited pro forma results reflect certain adjustments for items that are not expected to have a continuing impact, such as adjustments for transaction costs incurred, management fees and acquisition accounting.

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisitions been consummated on January 1, 2021 (in millions, except for per share data):

	Year Ended (unaudited)
	December 31, 2022
Total revenues	$	3,091.3
Net income attributable to SUI common shareholders	$	241.2
Net income per share attributable to SUI common shareholders - basic	$	1.99
Net income per share attributable to SUI common shareholders - diluted	$	1.99

2022 Development and Expansion Activities

During the year ended December 31, 2022, we acquired six land parcels located in the U.S. and the UK for an aggregate purchase price of $26.2 million and two buildings and land parcels related to our marinas located in the U.S. for an aggregate purchase price of $13.9 million.

2022 Dispositions

During the three months ended September 30, 2022, we sold an RV community containing 514 sites located in California for $15.0 million. The disposition resulted in a loss on sale of $0.8 million, inclusive of selling costs.

During the three months ended March 31, 2022, we sold two MH communities and one community containing MH and RV sites, each located in Florida, with a total of 323 sites for $29.5 million. The gain from the sale of the properties was $13.3 million.

11

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

4. Notes and Other Receivables

The following table sets forth certain information regarding notes and other receivables (in millions):

	March 31, 2023		December 31, 2022
Installment notes receivable on manufactured homes, net	$	62.2	$	65.9
Notes receivable from real estate developers and operators	435.0		305.2
Other receivables, net	219.5		246.2
Total Notes and Other Receivables, net	$	716.7	$	617.3

Installment Notes Receivable on Manufactured Homes

Installment notes receivable are measured at fair value, using indicative pricing models from third party valuation specialists, in accordance with ASC Topic 820, "Fair Value Measurements and Disclosures." The balances of installment notes receivable of $62.2 million (net of fair value adjustment of $3.1 million) and $65.9 million (net of fair value adjustment of $1.4 million) as of March 31, 2023 and December 31, 2022, respectively, are secured by manufactured homes. The notes represent financing to purchasers of manufactured homes located in our communities and require monthly principal and interest payments. The notes had a net weighted average interest rate (net of servicing costs) and maturity of 7.6% and 13.6 years as of March 31, 2023, and 7.6% and 13.8 years as of December 31, 2022, respectively. Refer to Note 15, "Fair Value of Financial Instruments," for additional detail.

Notes Receivable from Real Estate Developers and Operators

Notes receivable from real estate developers and operators are measured at fair value, using indicative pricing models from third party valuation specialists, in accordance with ASC Topic 820, "Fair Value Measurements and Disclosures." As of March 31, 2023 and December 31, 2022, the notes receivable balances include a fully drawn loan provided to a real estate operator to fund investing and financing activities totaling $341.1 million with a net weighted average interest rate and maturity of 11.6% and 0.2 years as of March 31, 2023, and totaling $217.6 million with a net weighted average interest rate and maturity of 15.3% and 0.1 years as of December 31, 2022. The additional acquisition and construction loans provided to real estate developers total $93.9 million with a net weighted average interest rate and maturity of 8.5% and 2.4 years as of March 31, 2023, and total $87.6 million with a net weighted average interest rate and maturity of 7.8% and 2.3 years as of December 31, 2022, respectively. As of March 31, 2023, the additional acquisition and construction loans provided to real estate developers have $41.3 million of undrawn funds.

There were no adjustments to the fair value of notes receivable from real estate developers and operators for the three months ended March 31, 2023 and 2022. Refer to Note 15, "Fair Value of Financial Instruments," for additional information.

Other Receivables, net

Other receivables, net were comprised of amounts due from the following categories (in millions):

	March 31, 2023		December 31, 2022
Insurance receivables	$	74.9	$	78.5
Marina customers for storage, service and lease payments, net(1)	46.4		40.0
Home sale proceeds	31.8		28.9
MH and annual RV residents for rent, utility charges, fees and other pass-through charges, net(2)	24.2		61.5
Other receivables(3)	42.2		37.3
Total Other Receivables, net	$	219.5	$	246.2

(1)Net of allowance of $2.4 million and $2.2 million as of March 31, 2023 and December 31, 2022, respectively.

(2)Net of allowance of $4.9 million and $5.9 million as of March 31, 2023 and December 31, 2022, respectively.

(3)Includes receivable from Rezplot Systems LLC, a nonconsolidated affiliate, in which we had 49.1% and 48.9% ownership interest as of March 31, 2023 and December 31, 2022, respectively. In June 2020, we made a convertible secured loan to Rezplot Systems LLC. The note allows for a principal amount of up to $10.0 million to be drawn down over a period of three years, bears an interest rate of 3.0% and is secured by all the assets of Rezplot Systems LLC. In January 2022, we made an additional loan to Rezplot Systems LLC that allows for a principal amount of up to $5.0 million to be drawn over a period of three years and bears an interest rate of 3.0%. The outstanding balances were $12.3 million and $12.7 million as of March 31, 2023 and December 31, 2022, respectively. Refer to Note 6, "Investments in Nonconsolidated Affiliates," for additional information on Rezplot Systems LLC.

12

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

5. Goodwill and Other Intangible Assets

Our intangible assets include goodwill, in-place leases, non-competition agreements, trademarks and trade names, customer relationships, franchise agreements and other intangible assets. These intangible assets are recorded in Goodwill and Other intangible assets, net on the Consolidated Balance Sheets.

Goodwill

The measurement periods for the valuation of assets acquired and liabilities assumed in a business combination end as soon as information on the facts and circumstances that existed as of the acquisition dates becomes available but do not exceed 12 months. Adjustments in purchase price allocations may require a change in the amounts allocated to goodwill during the periods in which the adjustments are determined. These purchase accounting adjustments are presented under Other in the table below. Changes in the carrying amount of goodwill during the three months ended March 31, 2023 by reportable segment were as follows (in millions):

	December 31, 2022		Currency Translation Adjustment		Other(1)		March 31, 2023
Segment
MH	$	467.4	$	12.2	$	62.0	$	541.6
RV	9.5		—		—		9.5
Marina	541.5		—		—		541.5
Total	$	1,018.4	$	12.2	$	62.0	$	1,092.6

(1) During the three months ended March 31, 2023, adjustments in purchase price allocations resulted in the recognition of additional goodwill of $62.0 million in the MH segment, related to the Park Leisure business combination.

Other Intangible Assets, net

The gross carrying amounts and accumulated amortization of our intangible assets were as follows (in millions):

		March 31, 2023				December 31, 2022
Other Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
In-place leases	2 months - 13 years	$	166.0	$	(139.0)	$	165.7	$	(135.4)
Non-competition agreements	5 years	10.5		(4.5)		10.5		(4.1)
Trademarks and trade names	3 - 15 years	81.0		(6.8)		81.2		(5.5)
Customer relationships	4 - 17 years	131.5		(27.8)		131.5		(24.7)
Franchise agreements and other intangible assets	1 - 27 years	48.3		(10.0)		48.3		(8.9)
Total finite-lived assets		$	437.3	$	(188.1)	$	437.2	$	(178.6)
Indefinite-lived assets - Trademarks and trade names	N/A	141.0		—		140.9		—
Indefinite-lived assets - Other	N/A	2.5		—		2.5		—
Total indefinite-lived assets		$	143.5	$	—	$	143.4	$	—
Total		$	580.8	$	(188.1)	$	580.6	$	(178.6)

Amortization expenses related to our Other intangible assets were as follows (in millions):

	Three Months Ended
Other Intangible Asset Amortization Expense	March 31, 2023		March 31, 2022
In-place leases	$	3.6	$	4.6
Non-competition agreements	0.5		0.5
Trademarks and trade names	1.5		0.2
Customer relationships	3.2		2.8
Franchise fees and other intangible assets	0.9		0.6
Total	$	9.7	$	8.7

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

We anticipate amortization expense for Other intangible assets to be as follows for the next five years (in millions):

	Remainder 2023		2024		2025		2026		2027
In-place leases	$	7.0	$	7.1	$	6.2	$	3.5	$	2.0
Non-competition agreements	1.6		2.1		2.1		0.1		—
Trademarks and trade names	4.6		5.2		5.2		5.2		5.2
Customer relationships	9.5		12.7		12.7		12.2		12.2
Franchise agreements and other intangible assets	3.0		3.3		3.1		2.9		2.6
Total	$	25.7	$	30.4	$	29.3	$	23.9	$	22.0

6. Investments in Nonconsolidated Affiliates

Investments in joint ventures that are not consolidated, nor recorded at cost, are accounted for using the equity method of accounting as prescribed in ASC Topic 323, "Investments - Equity Method and Joint Ventures." Investments in nonconsolidated affiliates are recorded within Other assets, net on the Consolidated Balance Sheets. Equity income and loss are recorded in the Income / (loss) from nonconsolidated affiliates line item on the Consolidated Statements of Operations.

RezPlot Systems LLC ("Rezplot")

At March 31, 2023 and December 31, 2022, we had a 49.1% and 48.9% ownership interest, respectively, in RezPlot, a RV reservation software technology company, which interest we acquired in January 2019.

Sungenia Joint Venture ("Sungenia JV")

At March 31, 2023 and December 31, 2022, we had a 50.0% ownership interest in Sungenia JV, a joint venture formed between us and Ingenia Communities Group in November 2018, to establish and grow a manufactured housing community development program in Australia.

GTSC LLC ("GTSC")

At March 31, 2023 and December 31, 2022, we had a 40.0% ownership interest in GTSC, which engages in acquiring, holding and selling loans secured, directly or indirectly, by manufactured homes located in our communities.

SV Lift, LLC ("SV Lift")

At March 31, 2023 and December 31, 2022, we had a 50.0% ownership interest in SV Lift, which owns, operates and leases an aircraft.

The investment balance in each nonconsolidated affiliate was as follows (in millions):

Investment	March 31, 2023		December 31, 2022
Investment in RezPlot	$	—	$	—
Investment in Sungenia JV	45.1		44.5
Investment in GTSC	40.8		54.5
Investment in SV Lift	2.2		2.3
Total	$	88.1	$	101.3

The income / (loss) from each nonconsolidated affiliate is as follows (in millions):

	Three Months Ended
Income / (Loss) from Nonconsolidated Affiliates	March 31, 2023		March 31, 2022
RezPlot equity loss	$	(1.5)	$	(0.7)
Sungenia JV equity income	0.6		0.6
GTSC equity income	1.0		1.2
SV Lift equity loss	(0.3)		(0.2)
Total Income / (Loss) from Nonconsolidated Affiliates	$	(0.2)	$	0.9

14

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

The change in the GTSC investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	54.5	$	35.7
Contributions	2.2		37.4
Distributions	(12.4)		(22.5)
Equity earnings	1.0		5.9
Fair value adjustment	(4.5)		(2.0)
Ending Balance	$	40.8	$	54.5

The change in the Sungenia JV investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	44.5	$	36.2
Cumulative translation adjustment	—		(3.0)
Contributions	—		9.1
Equity earnings	0.6		2.2
Ending Balance	$	45.1	$	44.5

7. Consolidated Variable Interest Entities

The Operating Partnership

We consolidate the Operating Partnership under the guidance set forth in ASC 810, "Consolidation." We evaluated whether the Operating Partnership met the criteria for classification as a variable interest entity ("VIE") or, alternatively, as a voting interest entity and concluded that the Operating Partnership met the criteria of a VIE. Our significant asset is our investment in the Operating Partnership, and consequently, substantially all of our assets and liabilities represent those assets and liabilities of the Operating Partnership. We are the sole general partner and generally have the power to manage and have complete control over the Operating Partnership and the obligation to absorb its losses or the right to receive its benefits.

Other Consolidated VIEs

We consolidate Sun NG RV Resorts LLC ("Sun NG Resorts"), Sun NG Whitewater RV Resorts LLC, Sun NG Beaver Brook LLC, FPG Sun Menifee 80 LLC, Solar Energy Project LLC, Solar Energy Project CA II LLC, Solar Energy Project III LLC and FPG Sun Moreno Valley 66 LLC under the guidance set forth in ASC Topic 810, "Consolidation." We concluded that each entity is a VIE where we are the primary beneficiary, as we have the power to direct the significant activities of and absorb the significant losses and receive the significant benefits from each entity. Refer to Note 8, "Debt and Line of Credit," and Note 9, "Equity and Temporary Equity," for additional information on Sun NG Resorts.

15

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

The following table summarizes the assets and liabilities of our consolidated VIEs, with the exception of the Operating Partnership, included in our Consolidated Balance Sheets after eliminations (in millions):

	March 31, 2023		December 31, 2022
Assets
Investment property, net	$	782.3	$	739.7
Cash, cash equivalents and restricted cash	11.0		14.1
Other intangible assets, net	12.7		13.0
Other assets, net	5.7		10.5
Total Assets	$	811.7	$	777.3
Liabilities and Other Equity
Secured debt	$	22.0	$	22.2
Unsecured debt	35.2		35.2
Advanced reservation deposits and rent	34.1		13.8
Accrued expenses and accounts payable	20.6		11.8
Other liabilities	1.2		1.4
Total Liabilities	113.1		84.4
Temporary equity	39.0		41.3
Total Liabilities and Other Equity	$	152.1	$	125.7

Total assets related to the consolidated VIEs, with the exception of the Operating Partnership, comprised 4.7% and 4.5% of our consolidated total assets at March 31, 2023 and December 31, 2022, respectively. Total liabilities comprised 1.2% and 0.9% of our consolidated total liabilities at March 31, 2023 and December 31, 2022, respectively. Equity Interests and Noncontrolling interests related to the consolidated VIEs, on an absolute basis, comprised less than 1.0% of our consolidated total equity at March 31, 2023 and December 31, 2022, respectively.

8. Debt and Line of Credit

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in millions, except for statistical information):

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	March 31, 2023		December 31, 2022		March 31, 2023	December 31, 2022	March 31, 2023		December 31, 2022
Secured Debt(1)	$	3,386.4	$	3,217.8	9.8	10.2	3.811	%	3.723	%
Unsecured Debt
Senior unsecured notes(2)	2,175.6		1,779.6		8.2	8.1	3.375	%	2.9	%
Line of credit and other debt(3)	1,838.1		2,130.6		2.4	2.8	4.638	%	4.417	%
Preferred equity - Sun NG Resorts - mandatorily redeemable	35.2		35.2		1.5	1.8	6.0	%	6.0	%
Preferred OP units - mandatorily redeemable	26.7		34.0		0.8	3.1	6.5	%	5.921	%
Total Unsecured Debt	4,075.6		3,979.4
Total Debt	$	7,462.0	$	7,197.2	7.4	7.4	3.908	%	3.746	%

(1) Balances at March 31, 2023 and December 31, 2022 include $0.1 million of net debt premium, respectively, and $16.2 million and $14.6 million of deferred financing costs, respectively.

(2) Balances at March 31, 2023 and December 31, 2022 include $7.0 million and $6.1 million of net debt discount, respectively, and $17.4 million and $14.3 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

(3) Balance at March 31, 2023 and December 31, 2022 includes $2.7 million and $3.0 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Secured Debt

Secured debt consists of mortgage term loans. During the three months ended March 31, 2023, no mortgage term loans were paid off. During the year ended December 31, 2022, we paid off the following mortgage term loans during the quarters presented below (in millions, except for statistical information):

Period	Repayment Amount			Fixed Interest Rate		Maturity Date	Loss on Extinguishment of Debt
Three months ended September 30, 2022	$	318.0	(1)	4.81	%	December 6, 2022 - September 6, 2024	$	4.0
Three months ended June 30, 2022	$	15.8		3.89	%	October 1, 2022	$	—

(1)Includes 17 mortgage term loans which were scheduled to mature from December 6, 2022 to September 6, 2024 that were secured by 35 properties.

During the three months ended March 31, 2023 and the year ended December 31, 2022, we entered into the following mortgage term loans during the quarters presented below (in millions, except for statistical information).

Period	Loan Amount			Term (in years)	Interest Rate		Maturity Date
Three months ended March 31, 2023	$	85.0	(1)	3	5.0	%	February 13, 2026
	$	99.1	(2)	7 - 10	5.72	%	April 1, 2030 - April 1, 2033
Three months ended December 31, 2022	$	226.0	(3)	4 - 7	4.5	%	June 15, 2026 - December 15, 2029
Three months ended September 30, 2022	$	20.6	(4)(6)	25	3.65	%	August 10, 2047
	$	3.4	(5)(6)	25	3.65	%	August 10, 2047

(1)Includes five existing encumbered properties.

(2)Includes 22 existing encumbered properties.

(3)Includes 18 existing encumbered properties.

(4)Represents a construction loan (undrawn as of March 31, 2023).

(5)Represents mortgage term loan.

(6)Represents loans jointly secured by one property.

The mortgage term loans, which total $3.4 billion as of March 31, 2023, are secured by 154 properties comprised of 61,624 sites representing approximately $2.7 billion of net book value.

Unsecured Debt

Senior Unsecured Notes

The following table sets forth certain information regarding our outstanding senior unsecured notes (in millions, except for statistical information). All senior unsecured notes include interest payments on a semi-annual basis in arrears, and are recorded in the Unsecured debt line item on the Consolidated Balance Sheets.

			Carrying Amount
	Principal Amount		March 31, 2023		December 31, 2022
5.7% notes, issued in January 2023 and due in January 2033(1)	$	400.0	$	395.4	N/A
4.2% notes, issued in April 2022 and due in April 2032	600.0		592.0		591.8
2.3% notes, issued in October 2021 and due in November 2028	450.0		446.3		446.2
2.7% notes, issued in June 2021 and October 2021, and due in July 2031	750.0		741.9		741.6
Total	$	2,200.0	$	2,175.6	$	1,779.6

(1) In January 2023, the Operating Partnership issued $400.0 million of senior unsecured notes with an interest rate of 5.7% and a 10-year term, due January 15, 2033 (the "2033 Notes"). Interest on the notes is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2023. The net proceeds from the offering were $395.3 million, after deducting underwriters' discounts and estimated offering expenses. We used the net proceeds from the offering to repay borrowings outstanding under our Senior Credit Facility.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Line of Credit

In April 2022, in connection with the closing of the Park Holidays acquisition, the Operating Partnership (as borrower), SUI (as guarantor) , and certain lenders entered into Amendment No. 1 to the Fourth Amended and Restated Credit Agreement and Other Loan Documents (the "Credit Facility Amendment"), which amended our senior credit facility (the "Senior Credit Facility").

The Credit Facility Amendment increased the aggregate amount of our Senior Credit Facility to $4.2 billion with the ability to upsize the total borrowings by an additional $800.0 million, subject to certain conditions. The increased aggregate amount under the Senior Credit Facility consists of the following: (a) a revolving loan in an amount up to $3.05 billion and (b) a term loan facility of $1.15 billion, with the ability to draw funds from the combined facilities in U.S. dollars, Pound sterling, Euros, Canadian dollars and Australian dollars, subject to certain limitations. The Credit Facility Amendment extended the maturity date of the revolving loan facility to April 7, 2026. At our option that maturity date may be extended two additional six-month periods. In addition, the Credit Facility Amendment established the maturity date of the term loan facility under the Credit Facility Amendment as April 7, 2025, which may not be further extended.

Prior to the Credit Facility Amendment, the Senior Credit Facility permitted aggregate borrowings of up to $2.0 billion, with an accordion feature that allowed for additional commitments of up to $1.0 billion, subject to the satisfaction of certain conditions. Prior to the amendment, $500.0 million of available borrowings under the Senior Credit Facility were scheduled to mature on October 11, 2024, with the remainder scheduled to mature on June 14, 2025. We had no loss on extinguishment of debt related to the Senior Credit Facility during the three months ended March 31, 2023.

The Senior Credit Facility bears interest at a floating rate based on the Adjusted Term Secured Overnight Financing Rate ("SOFR"), the Adjusted Eurocurrency Rate, the Daily Risk Free Rate ("RFR"), the Australian Bank Bill Swap Bid Rate ("BBSY"), the Daily Sterling Overnight Index Average ("SONIA") Rate or the Canadian Dollar Offered Rate, as applicable, plus a margin, in all cases, which can range from 0.725% to 1.6%, subject to certain adjustments. As of March 31, 2023, the margins based on our credit ratings were 0.85% on the revolving loan facility and 0.95% on the term loan facility. During the three months ended March 31, 2023 and year ended December 31, 2022, we achieved sustainability related requirements resulting in a favorable 0.04% and 0.01% adjustments, respectively, to both margins.

At the lenders' option, the Senior Credit Facility will become immediately due and payable upon an event of default under the Credit Facility Amendment. We had $741.6 million and $1.1 billion of borrowings outstanding under the revolving loan as of March 31, 2023 and December 31, 2022, respectively. We also had $1.1 billion of borrowings outstanding under the term loan on the Senior Credit Facility as of March 31, 2023 and December 31, 2022, respectively. These balances are recorded in Unsecured debt on the Consolidated Balance Sheets.

The Senior Credit Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under the Senior Credit Facility, but does reduce the borrowing amount available. We had $4.8 million and $2.3 million of outstanding letters of credit at March 31, 2023 and December 31, 2022, respectively.

Bridge Loan Termination

In March 2022, we terminated our commitment letter with Citigroup Global Markets, Inc. ("Citigroup"), pursuant to which, Citigroup (on behalf of its affiliates), previously committed to lend us up to £950.0 million in Pound sterling, or approximately $1.2 billion converted at the March 31, 2022 exchange rate (the "Bridge Loan"). As of the date of termination, we did not have any borrowings outstanding under the Bridge Loan. During the year ended December 31, 2022, we recognized a Loss on extinguishment of debt in our Consolidated Statement of Operations of $0.3 million related to the termination of the Bridge Loan.

Unsecured Term Loan

In October 2019, we assumed a $58.0 million secured term loan facility related to an acquisition. The term loan initially had a four-year term ending October 29, 2023, and bore interest at a floating rate based on the Eurodollar rate or Prime rate plus a margin ranging from 1.2% to 2.05%. Effective July 1, 2021, the agreement was amended to release the associated collateral. The amendment extended the term loan facility maturity date to October 29, 2025 and adjusted the interest rate margin to a range from 0.8% to 1.6%. In August 2022, we amended the secured term loan facility to transition from the Eurodollar rate to SOFR. As of March 31, 2023, the margin based on our credit rating was 0.95%. The outstanding balance was $16.2 million at March 31, 2023 and $19.8 million at December 31, 2022, respectively. In accordance with the amended agreement, we achieved sustainability related requirements resulting in a favorable 0.01% adjustment to the margins. These balances are recorded in Unsecured debt on the Consolidated Balance Sheets.

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(Unaudited)

Preferred Equity - Sun NG Resorts - Mandatorily Redeemable

In connection with the investment in Sun NG Resorts in June 2018, $35.3 million of mandatorily redeemable Preferred Equity ("Preferred Equity - Sun NG Resorts") was purchased by unrelated third parties. The Preferred Equity - Sun NG Resorts carries a preferred rate of return of 6.0% per annum. The Preferred Equity - Sun NG Resorts has a seven-year term ending June 1, 2025 and can be redeemed in the fourth quarter of 2024 at the holders' option. The Preferred Equity - Sun NG Resorts as of March 31, 2023 was $35.2 million. This balance is recorded within the Unsecured debt line item on the Consolidated Balance Sheets. Refer to Note 7, "Consolidated Variable Interest Entities," and Note 9, "Equity and Temporary Equity," for additional information.

Preferred OP Units - Mandatorily Redeemable

Preferred OP units at March 31, 2023 and December 31, 2022 include $26.7 million and $34.0 million of Aspen preferred OP units issued by the Operating Partnership, respectively. As of March 31, 2023, these units are convertible indirectly into 320,699 shares of our common stock.

In January 2020, we amended the Operating Partnership's partnership agreement. The amendment extended the automatic redemption date and reduced the annual distribution rate for 270,000 of the Aspen preferred OP units (the "Extended Units"). Subject to certain limitations, at any time prior to January 1, 2024 (or prior to January 1, 2034 with respect to the Extended Units), the holder of each Aspen preferred OP unit at its option may convert such Aspen preferred OP unit into: (a) if the average closing price of our common stock for the preceding ten trading days is $68.00 per share or less, 0.397 common OP units; or (b) if the 10-day average closing price is greater than $68.00 per share, the number of common OP units is determined by dividing (i) the sum of (A) $27.00 plus (B) 25.0% of the amount by which the 10-day average closing price exceeds $68.00 per share, by (ii) the 10-day average closing price. The current preferred distribution rate is 3.8% on the Extended Units and 6.5% on all other Aspen preferred OP units. On January 2, 2024 (or January 2, 2034 with respect to the Extended Units), we are required to redeem for cash all Aspen preferred OP units that have not been converted to common OP units. All of the Extended Units converted during the three months ended March 31, 2023. As of March 31, 2023, 988,819 of other Aspen preferred units were outstanding. These balances are recorded within the Unsecured debt line item on the Consolidated Balance Sheets.

Covenants

The mortgage term loans, senior unsecured notes and Senior Credit Facility are subject to various financial and other covenants. The most restrictive covenants are pursuant to (a) the terms of the Senior Credit Facility, which contains a minimum fixed charge coverage ratio, maximum leverage ratio, distribution ratio and variable rate indebtedness, and (b) the terms of the senior unsecured notes, which contain a total debt to total assets ratio, secured debt to total assets ratio, consolidated income available for debt service to debt service ratio and unencumbered total asset value to unsecured debt covenants ratio. At March 31, 2023, we were in compliance with all covenants.

In addition, certain of our subsidiary borrowers own properties that secure loans. These subsidiaries are consolidated within our accompanying Consolidated Financial Statements, however, each of these subsidiaries' assets and credit are not available to satisfy our debts and other obligations, and any of our other subsidiaries or any other person or entity.

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(Unaudited)

9. Equity and Temporary Equity

Temporary Equity

Redeemable Preferred OP Units

Temporary equity includes preferred securities that are redeemable for cash at the holder's option or upon the occurrence of an event that is not solely within our control based on a fixed or determinable price. These securities are not mandatorily redeemable for cash nor do they contain a fixed maturity date. The following table sets forth the various series of redeemable preferred OP units that were outstanding as of March 31, 2023 and December 31, 2022 and the related terms, and summarizes the balance included within Temporary Equity on our Consolidated Balance Sheets (in millions, except for statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption(3)	Redemption Period	March 31, 2023		December 31, 2022
Series D preferred OP units	488,958	0.8000	4.0	%	Holder's Option	Any time after earlier of January 31, 2024 or death of holder	$	47.7	$	48.1
Series F preferred OP units	90,000	0.6250	3.0	%	Holder's Option	Any time after earlier of May 14, 2025 or death of holder	8.7		8.7
Series G preferred OP units	239,710	0.6452	3.2	%	Holder's Option	Any time after earlier of September 30, 2025 or death of holder	24.0		24.4
Series H preferred OP units	581,342	0.6098	3.0	%	Holder's Option	Any time after earlier of October 30, 2025 or death of holder	56.3		56.7
Series J preferred OP units	239,000	0.6061	2.85	%	Holder's Option	During the 30-day period following a change of control of the Company or any time after April 21, 2026	23.3		23.6
Series K preferred OP units	1,000,000	0.5882	4.0	%	Holder's Option	Within 60 days after March 23, 2028	99.9		—
Total	2,639,010						$	259.9	$	161.5

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

(3) The redemption price for each preferred OP unit redeemed will be equal to its issue price plus all accrued but unpaid distributions.

Series K Preferred OP Units - On March 23, 2023, we issued 1,000,000 Series K preferred OP units in connection with the acquisition of the Savannah Yacht Center. The Series K preferred OP units have a stated issuance price of $100.00 per OP unit and carry a preferred return of 4.0%. Subject to certain limitations, at any time after its issuance date, each Series K preferred OP unit will be exchangeable into that number of our common OP units equal to the quotient (the "Series K Exchange Rate") obtained by dividing $100.00 by $170.00, (the "Series K Conversion Price"), (as such ratio is subject to adjustment for certain capital events). Each Common OP unit is exchangeable for one share of our common stock. Subject to certain limitations, the holders of Series K Preferred Units will have the right to cause SCOLP to redeem all or a portion of their Series K Preferred Units for $100.00 per unit (plus any accrued but unpaid distributions) within 60 days after the fifth anniversary of the issuance date of the Series K preferred OP units. SCOLP will have the right to cause the holders of Series K preferred OP units to exchange the Series K preferred OP units into Common OP units at the Series K Exchange Rate (i) within 60 days after the fifth anniversary of the issuance date of the Series K Preferred Units or (ii) if at any time the trading price of the Company's common stock for each of the preceding 60 trading days is equal to or greater than 120% of the Series K Conversion Price. As of March 31, 2023, 1,000,000 Series K preferred OP units were outstanding. Refer to Note 3, "Real Estate Acquisitions and Dispositions," for additional information.

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(Unaudited)

Redeemable Equity Interests

The following table summarizes the redeemable equity interests included in Temporary Equity on our Consolidated Balance Sheets (in millions):

Equity Interest	Description	March 31, 2023		December 31, 2022
FPG Sun Moreno Valley 66 LLC	In connection with the investment in land for future development in the city of Moreno Valley, California, at the property known as FPG Sun Moreno Valley 66 LLC	$	0.1	$	0.1
Solar Energy Project CA II LLC	A joint venture that operates and maintains solar energy equipment in select California communities	4.3		4.2
Solar Energy Project LLC	A joint venture that operates and maintains solar energy equipment in select California communities	2.0		1.9
Solar Energy Project III LLC	A joint venture that operates and maintains solar energy equipment in select Arizona and California communities	1.9		0.3
FPG Sun Menifee 80 LLC	In connection with the investment in land for future development in the city of Menifee in California, at the property known as FPG Sun Menifee 80 LLC	0.1		0.1
NG Sun Whitewater LLC	In connection with the investment in land at the property known as Whitewater	2.5		3.2
NG Sun LLC	In connection with the investment in Sun NG Resorts, a joint venture that operates a portfolio of RV communities in the U.S.	27.7		31.1
NG Sun Beaver Brook LLC	In connection with the investment in Sun NG Beaver Brook LLC, a joint venture that operates one RV communities in the U.S.	0.4		0.5
Total		$	39.0	$	41.4

Equity Interest - NG Sun LLC - In June 2018, in connection with the investment in Sun NG Resorts, unrelated third parties purchased $6.5 million of Series B preferred equity interests and $15.4 million of common equity interests in Sun NG Resorts (herein jointly referred to as "Equity Interest - NG Sun LLC"). In April and September 2020, in connection with certain acquisitions, $3.0 million of Series B preferred equity interests were converted to common equity interests. The Series B preferred equity interests carry a preferred return at a rate that, at any time, is equal to the interest rate on Sun NG Resorts' indebtedness at such time. The current rate of return is 5.0%. The Equity Interest - NG Sun LLC does not have a fixed maturity date and can be redeemed in the fourth quarters of 2024, 2025 or 2026 at the holders' option. Sun NG LLC, our subsidiary, has the right during certain periods each year, with or without cause, or for cause at any time, to elect to buy NG Sun LLC's interest. During a limited period in 2024, NG Sun LLC has the right to put its interest to Sun NG LLC. If either party exercises its option, the property management agreement will be terminated, and we are required to purchase the remaining interests of NG Sun LLC and the property management agreement at fair value. In December 2021, the operating agreement was amended and we paid Sun NG Resorts a contingent consideration earnout in the amount of $38.3 million. The contingent consideration payment was recognized as an additional purchase price payment within Land improvements and buildings in the Consolidated Balance Sheets, and within Acquisition of properties, net of cash acquired in the Consolidated Statement of Cash Flows. The Equity Interest - NG Sun LLC balance was $27.7 million and $31.1 million as of March 31, 2023 and December 31, 2022, respectively. Refer to Note 7, "Consolidated Variable Interest Entities," and Note 8, "Debt and Line of Credit," for additional information.

Permanent Equity

Universal Shelf Registration Statement

In April 2021, we filed a new universal shelf registration statement on Form S-3 with the SEC. The shelf registration statement was deemed automatically effective and provides for the registration of unspecified amounts of equity and debt securities. We have the authority to issue 200,000,000 shares of capital stock, of which 180,000,000 shares are common stock and 20,000,000 are shares of preferred stock, par value $0.01 per share. As of March 31, 2023, we had 124,421,717 shares of common stock issued and outstanding and no shares of preferred stock were issued and outstanding.

Public Equity Offerings

In November 2021, we entered into two forward sale agreements relating to an underwritten registered public offering of 4,025,000 shares of our common stock at a public offering price of $185.00 per share and completed the offering on November 18, 2021 (the "November 2021 Forward Sale Agreements"). We did not initially receive any proceeds from the sale of shares of our common stock by the forward purchaser or its affiliates. In April 2022, we completed the physical settlement of the 4,025,000 shares of common stock and received aggregate net proceeds of $705.4 million. We used the net proceeds to repay borrowings outstanding under our Senior Credit Facility, and for working capital and general corporate purposes.

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(Unaudited)

At the Market Offering Sales Agreement

In December 2021, we entered into an At the Market Offering Sales Agreement with certain sales agents and forward sellers pursuant to which we may sell, from time to time, up to an aggregate gross sales price of $1.25 billion of our common stock (the "Sales Agreement"), through the sales agents, acting as our sales agents or, if applicable, as forward sellers, or directly to the sales agents as principals for their own accounts. The sales agents and forward sellers are entitled to compensation in an agreed amount not to exceed 2.0% of the gross price per share for any shares sold under the Sales Agreement. We simultaneously terminated our prior sales agreement upon entering into the Sales Agreement. Through March 2023, we had entered into forward sales agreements under our Sales Agreement for an aggregate gross sales price of $160.6 million.

During the three months ended September 30, 2022, we entered into forward sale agreements with respect to 15,000 shares of common stock under our Sales Agreement for $2.6 million. Additionally, we settled all of our outstanding forward sale agreements with respect to 1,526,212 shares of common stock which includes 620,109; 600,503; 290,600; and 15,000 shares of common stock from the three months ended December 31, 2021, March 31, June 30 and September 30, 2022 forward sale agreements, respectively. The net proceeds of $275.5 million from the settlement of these forward sale agreements were used to repay borrowings outstanding under our Senior Credit Facility.

During the three months ended June 30, 2022, we completed the physical settlement of 1,200,000 shares of common stock under our prior at the market offering program and received net proceeds of $229.5 million. Additionally, we entered into forward sales agreements with respect 290,600 shares of common stock for $50.1 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the three months ended March 31, 2022, we entered into forward sales agreements with respect to 600,503 shares of common stock for $107.9 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the year ended December 31, 2021, we entered into forward sale agreements with respect to 1,820,109 shares of common stock under our prior at the market offering program for $356.5 million. We completed the physical settlement of 1,200,000 and 620,109 shares of common stock during the three months ended June 30, 2022 and September 30, 2022, respectively.

Issuances of Common Stock and OP Units in Connection with the Acquisition of Certain Properties

Issuances of Common Stock

In April 2022, we issued 186,044 shares of common stock with a value of $33.9 million in connection with the acquisition of Park Holidays.

Issuances of Common OP Units

Three Months Ended March 31, 2023 and 2022	Common OP Units Issued	Value at Issuance (in millions)		Related Acquisition
January 2023	31,289	$	4.5	Fox Run
February 2022	14,683	$	2.8	Jarrett Bay Boatworks

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(Unaudited)

Noncontrolling Interests - Common and Preferred OP Units

The following table summarizes the common and preferred OP units included within Noncontrolling interests on our Consolidated Balance Sheets (in millions, except for shares and statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption	Redemption Period	March 31, 2023		December 31, 2022
Common OP units	2,447,083	1.0000	Same distribution rate for common stock		N/A	N/A	$	33.6	$	31.5
Series A-1 preferred OP units	207,548	2.4390	6.0	%	N/A	N/A	13.6		14.0
Series A-3 preferred OP units	40,268	1.8605	4.5	%	N/A	N/A	2.7		2.7
Series C preferred OP units	305,948	1.1100	5.0	%	N/A	N/A	23.1		23.6
Series E preferred OP units	80,000	0.6897	5.5	%	N/A	N/A	6.8		6.9
Total	3,080,847						$	79.8	$	78.7

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

Conversions

Conversions to Common Stock - Subject to certain limitations, holders can convert certain series of OP units to shares of our common stock at any time. Below is the activity of conversions during the three months ended March 31, 2023 and 2022:

		Three Months Ended
		March 31, 2023		March 31, 2022
Series	Conversion Rate	Units / Shares Converted	Common Stock(1)	Units / Shares Converted	Common Stock(1)
Aspen preferred OP units	Various(2)	270,000	86,224	—	—
Common OP units	1.0000	2,910	2,910	1,260	1,260
Series A-1 preferred OP units	2.4390	—	—	2,694	6,568
Series C preferred OP units	1.1100	65	72	150	166
Series E preferred OP units	0.6897	—	—	5,000	3,448
Series G preferred OP units	0.6452	1,000	645	—	—
Series H preferred OP units	0.6098	25	15	—	—
Series J preferred OP units	0.6061	1,000	606	—	—

(1)Calculation may yield minor differences due to rounding incorporated in the above numbers.

(2)Refer to Note 8, "Debt and Line of Credit," for additional detail on Aspen preferred OP unit conversions.

Distributions

Distributions declared for the three months ended March 31, 2023 were as follows:

Common Stock, Common OP units and Restricted Stock Distributions	Record Date	Payment Date	Distribution Per Share		Total Distribution (in Millions)
March 31, 2023	3/31/2023	4/17/2023	$	0.93	$	118.0

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(Unaudited)

10. Share-Based Compensation

As of March 31, 2023, we had two share-based compensation plans: the Sun Communities, Inc. 2015 Equity Incentive Plan (as amended, the "2015 Equity Incentive Plan") and the First Amended and Restated 2004 Non-Employee Director Option Plan (as amended, the "2004 Non-Employee Director Option Plan"). We believe granting equity awards will provide certain executives, key employees and directors additional incentives to promote our financial success and promote employee and director retention by providing an opportunity to acquire or increase the direct proprietary interest of those individuals in our operations and future. Time based awards for directors generally vest over three years. Time based awards for key employees and executives generally vest over five years. Market condition awards for executives generally vest after three years.

During the three months ended March 31, 2023 and 2022, shares were granted as follows:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type
2023	Key Employees	2015 Equity Incentive Plan	220,258	$	137.16	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	62,800	$	144.88	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	82,200	$	108.60	(2)	Market Condition	(3)
2023	Directors	2004 Non-Employee Director Option Plan	16,000	$	148.12	(1)	Time Based
2022	Key Employees	2015 Equity Incentive Plan	138,510	$	180.49	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	66,000	$	178.20	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	91,500	$	124.88	(2)	Market Condition	(3)
2022	Directors	2004 Non-Employee Director Option Plan	11,900	$	197.00	(1)	Time Based

(1)Represents the weighted average fair value per share of the closing price of our common stock on the dates the shares were awarded.

(2)Represents the weighted average fair value per share of the Monte Carlo simulation fair value price of our market condition awards on the dates the shares were awarded.

(3)Share-based compensation for restricted stock awards with market conditions is measured based on shares expected to vest using a Monte Carlo simulation to determine fair value.

The vesting requirements for 203,898 and 230,411 restricted shares granted to our executives, directors and employees were satisfied during the three months ended March 31, 2023 and 2022, respectively.

We capitalize a portion of share-based compensation costs for employees who work directly on construction and development of our communities. We recognized the following share-based compensation costs during the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023		March 31, 2022
Share-based compensation - expensed(1)	$	9.6	$	9.7
Share-based compensation - capitalized(2)	$	0.7	$	—

(1) Recorded within General and Administrative Expense on the Consolidated Income Statements.

(2) Capitalized to Land Improvements and Buildings on the Consolidated Balance Sheets.

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(Unaudited)

11. Segment Reporting

ASC Topic 280, "Segment Reporting," establishes standards for the way that business enterprises report information about operating segments in its financial statements. As described in Note 1, "Basis of Presentation," we analyze our operating results through the following segments: (i) Manufactured home ("MH") communities, (ii) Recreational vehicle ("RV") communities and (iii) Marina. Hybrid properties are classified to a segment based on the predominant site counts at the properties. We evaluate segment operating performance based on NOI.

The MH segment owns, operates, develops, or has an interest in, a portfolio of MH communities in the U.S. and the UK, and is in the business of acquiring, operating and developing ground-up MH communities to provide affordable housing solutions to residents. The MH segment in the U.S. also provides manufactured home sales and leasing services to tenants and prospective tenants of our communities. The MH segment in the UK provides holiday home sales and associated site license activities to holiday homeowners in our communities.

The RV segment owns, operates, develops, or has an interest in, a portfolio of RV communities and is in the business of acquiring, operating and developing ground-up RV communities in the U.S. and Canada. It also provides leasing services for vacation rentals within the RV communities.

The Marina segment owns, operates and develops marinas, and is in the business of acquiring and operating marinas in the U.S., with the majority of such marinas concentrated in coastal regions, and others located in various inland regions.

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(Unaudited)

A presentation of segment financial information is summarized as follows (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Operating revenues	$	338.2	$	111.8	$	180.3	$	630.3	$	269.1	$	116.7	$	147.9	$	533.7
Operating expenses / Cost of sales	162.0		66.6		121.3		349.9		107.4		67.1		97.3		271.8
NOI	$	176.2	$	45.2	$	59.0	$	280.4	$	161.7	$	49.6	$	50.6	$	261.9
Adjustments to arrive at net income
Interest income							11.4								6.8
Brokerage commissions and other revenues, net							9.5								8.0
General and administrative expense							(63.9)								(55.7)
Catastrophic event-related charges, net							(1.0)								—
Business combination expense, net							(2.8)								(0.5)
Depreciation and amortization							(158.0)								(148.5)
Loss on extinguishment of debt (see Note 8)							—								(0.3)
Interest expense							(76.6)								(45.2)
Interest on mandatorily redeemable preferred OP units / equity							(1.0)								(1.0)
Loss on remeasurement of marketable securities							(19.9)								(34.5)
Loss on foreign currency exchanges							(2.7)								(2.2)
Gain / (loss) on dispositions of properties							(1.6)								13.4
Other expense, net							(1.0)								(0.6)
Gain / (loss) on remeasurement of notes receivable							(1.7)								0.2
Income / (loss) from nonconsolidated affiliates (see Note 6)							(0.2)								0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates							(4.5)								0.1
Current tax expense							(3.9)								(1.3)
Deferred tax benefit							4.6								—
Net Income / (Loss)							(32.9)								1.5
Less: Preferred return to preferred OP units / equity interests							2.4								3.0
Less: Loss attributable to noncontrolling interests							(5.2)								(2.2)
Net Income / (Loss) Attributable to SUI Common Shareholders							$	(30.1)							$	0.7

	March 31, 2023								December 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Identifiable Assets
Investment property, net	$	6,871.5	$	3,808.2	$	3,171.1	$	13,850.8	$	7,181.7	$	3,744.3	$	3,045.0	$	13,971.0
Cash, cash equivalents and restricted cash	38.1		22.2		14.5		74.8		49.4		30.3		10.7		90.4
Marketable securities	68.3		37.2		—		105.5		82.4		44.9		—		127.3
Inventory of manufactured homes	209.4		23.1		—		232.5		189.1		13.6		—		202.7
Notes and other receivables, net	559.4		102.7		54.6		716.7		475.2		96.5		45.6		617.3
Goodwill	541.6		9.5		541.5		1,092.6		467.4		9.5		541.5		1,018.4
Other intangible assets, net	95.1		31.2		266.4		392.7		97.9		32.6		271.5		402.0
Other assets, net	603.2		51.3		243.7		898.2		356.1		63.0		236.0		655.1
Total Assets	$	8,986.6	$	4,085.4	$	4,291.8	$	17,363.8	$	8,899.2	$	4,034.7	$	4,150.3	$	17,084.2

26

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

12. Income Taxes

We have elected to be taxed as a real estate investment trust ("REIT") pursuant to Section 856(c) of the Internal Revenue Code of 1986, as amended ("Code"). In order for us to qualify as a REIT, at least 95% of our gross income in any year must be derived from qualifying sources. In addition, a REIT must distribute annually at least 90% of its REIT taxable income (calculated without any deduction for dividends paid and excluding capital gain) to its shareholders and meet other tests.

Qualification as a REIT involves the satisfaction of numerous requirements (on an annual and quarterly basis) established under highly technical and complex Code provisions for which there are limited judicial or administrative interpretations and involves the determination of various factual matters and circumstances not entirely within our control. In addition, frequent changes occur in the area of REIT taxation, which requires us to continually monitor our tax status. We analyzed the various REIT tests and confirmed that we continued to qualify as a REIT for the three months ended March 31, 2023.

As a REIT, we generally will not be subject to U.S. federal income taxes at the corporate level on the ordinary taxable income we distribute to our shareholders as dividends. If we fail to qualify as a REIT in any taxable year, our taxable income could be subject to U.S. federal income tax at regular corporate rates. Even if we qualify as a REIT, we may be subject to certain state and local income taxes, as well as U.S. federal income and excise taxes on our undistributed income. In addition, taxable income from non-REIT activities managed through taxable REIT subsidiaries is subject to federal, state and local income taxes. We are also subject to local income taxes in Canada, Puerto Rico and the UK due to certain properties located in those jurisdictions. We do not provide for withholding taxes on our undistributed earnings from our Canadian subsidiaries as they are reinvested and will continue to be reinvested indefinitely outside of the U.S. However, we are subject to Australian withholding taxes on distributions from our investment in Ingenia Communities Group. As currently structured, we are not subject to UK withholding taxes on distributions from our UK properties.

Deferred tax assets and liabilities reflect the impact of temporary differences between the amounts of assets and liabilities for financial reporting purposes and the basis of such assets and liabilities as measured by tax laws. Deferred tax assets are reduced, if necessary, by a valuation allowance to the amount where realization is more likely than not assured after considering all available evidence. Our temporary differences primarily relate to net operating loss carryforwards, depreciation and basis differences between tax and GAAP. Our deferred tax assets that have a full valuation allowance relate to our taxable REIT subsidiaries. As of March 31, 2023, we had $230.4 million of net deferred tax liabilities, comprised of deferred tax assets, net of valuation allowance of $37.6 million, and deferred tax liabilities of $268.0 million. Additionally, we have $59.0 million of deferred tax liabilities that have been reclassified as real estate held for sale. Refer to Note 3, "Real Estate Acquisitions and Dispositions," for additional information. The deferred tax liability balance is comprised primarily of basis differences in our foreign investment in properties in the UK and Canada. As of December 31, 2022, we had $308.6 million of net deferred tax liabilities, comprised of deferred tax assets, net of valuation allowance of $49.8 million, and deferred tax liabilities of $340.8 million. The net deferred tax assets and deferred tax liabilities are recorded within Other assets and Other liabilities, respectively, on our Consolidated Balance Sheets as of March 31, 2023 and December 31, 2022.

We had no unrecognized tax benefits as of March 31, 2023 and 2022. We do not expect significant changes in tax positions that would result in unrecognized tax benefits within one year of March 31, 2023.

For the three months ended March 31, 2023 and 2022, we recorded current tax expense for federal, state, Canadian, Puerto Rican, and UK income taxes and Australian withholding taxes totaling $3.9 million and $1.3 million, respectively.

For the three months ended March 31, 2023, we recorded a deferred tax benefit of $4.6 million.

27

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

13. Earnings Per Share

Earnings per share ("EPS") is computed by dividing net income by the weighted average number of common shares outstanding during the period on a basic and diluted basis. We calculate diluted EPS using the more dilutive of the treasury stock method and the two-class method for stock option and restricted common shares, the treasury stock method for forward equity sales and the if converted method for convertible units.

From time to time, we enter into forward equity sales agreements, which are discussed in Note 9, "Equity and Temporary Equity." We considered the potential dilution resulting from the forward equity sales agreements on the EPS calculations. At inception, the agreements do not have an effect on the computation of basic EPS as no shares are delivered unless there is a physical settlement. Common shares issued upon the physical settlement of the forward equity sales agreements, weighted for the period these common shares are outstanding, are included in the denominator of basic EPS. To determine the dilution resulting from the forward equity sales agreements during the period of time prior to settlement, we calculate the number of weighted-average shares outstanding - diluted in accordance with the treasury stock method.

Our potentially dilutive securities include our potential common shares related to our forward equity offerings, our unvested restricted common shares, and our Operating Partnership outstanding common OP units, Series A-1 preferred OP units, Series A-3 preferred OP units, Series C preferred OP units, Series D preferred OP units, Series E preferred OP units, Series F preferred OP units, Series G preferred OP units, Series H preferred OP units, Series J preferred OP units, Series K preferred OP units and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Diluted EPS considers the impact of potentially dilutive securities except when the potential common shares have an anti-dilutive effect. Our unvested restricted stock common shares contain rights to receive non-forfeitable distributions and participate equally with common stock with respect to distributions issued or declared, and thus, are participating securities, requiring the two-class method of computing EPS. In calculating the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the weighted average number of shares outstanding during the period. The two-class method determines EPS by (1) dividing the sum of distributed earnings allocated to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of shares of common stock outstanding for the period; and (2) dividing the sum of distributed earnings allocated to participating securities and undistributed earnings allocated to participating securities by the weighted average number of shares of participating securities for the period. The remaining potential dilutive common shares do not contain rights to distributions and are included in the computation of diluted EPS.

Computations of basic and diluted EPS were as follows (in millions, except for per share data):

	Three Months Ended
	March 31, 2023		March 31, 2022
Numerator
Net income / (loss) attributable to SUI common shareholders	$	(30.1)	$	0.7
Less: allocation to restricted stock awards	(0.1)		—
Basic earnings - net income / (loss) attributable to common shareholders after allocation to restricted stock awards	$	(30.0)	$	0.7
Add: allocation to restricted stock awards	(0.1)		—
Add: allocation to common and preferred OP units dilutive effect	(0.6)		—
Diluted earnings - net income / (loss) attributable to common shareholders after allocation to common and preferred OP units	$	(30.7)	$	0.7

Denominator
Weighted average common shares outstanding	123.3		115.3
Add: common shares dilutive effect: Forward Equity Offering	—		0.2
Add: dilutive restricted stock	0.4		0.4
Add: common and preferred OP units dilutive effect	2.5		—
Diluted weighted average common shares and securities	126.2		115.9
EPS Available to Common Shareholders After Allocation
Basic earnings / (loss) per share	$	(0.24)	$	0.01
Diluted earnings / (loss) per share	$	(0.24)	$	0.01

28

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

We have excluded certain convertible securities from the computation of diluted EPS because the inclusion of those securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted EPS as of March 31, 2023 and 2022 (in thousands):

	As of
	March 31, 2023	March 31, 2022
Common OP units	—	2,551
A-1 preferred OP units	208	272
A-3 preferred OP units	40	40
Aspen preferred OP units	989	1,284
Series C preferred OP units	306	306
Series D preferred OP units	489	489
Series E preferred OP units	80	85
Series F preferred OP units	90	90
Series G preferred OP units	240	241
Series H preferred OP units	581	581
Series I preferred OP units(1)	N/A	922
Series J preferred OP units	239	240
Series K preferred OP units	1,000	N/A
Total Securities	4,262	7,101

(1) All of our outstanding Series I preferred OP units converted during the year ended December 31, 2022.

14. Derivative Financial Instruments

Our objective and strategy in using interest rate derivatives is to manage exposure to interest rate movements, thereby minimizing the effect of interest rate changes and the effect they could have on future cash outflows (forecasted interest payments) on a forecasted issuance of long-term debt or on outstanding floating rate debt. We typically enter into treasury locks and interest rate swaps to accomplish this objective. We do not enter into derivative instruments for speculative purposes. We recognize derivative instruments at fair value on a recurring basis on the Consolidated Balance Sheets and classify the derivatives within Level 2 of the fair value hierarchy. We adjust our Consolidated Balance Sheets on a quarterly basis to reflect the current fair market value of the derivative instruments.

As of March 31, 2023, we held four interest rate swap contracts, which have each been designated as a cash flow hedge under ASC Topic 815, "Derivatives and Hedging." The risk being hedged is the interest rate risk related to forecasted debt issuance transactions and the benchmark interest rate used is the SOFR. Additionally, the interest rate risk related to outstanding floating rate debt is being hedged and the benchmark interest rate used is the SONIA Rate. The unrealized gains or losses on the derivative instruments are recorded in Accumulated other comprehensive income / (loss) and are reclassified to Interest expense on the Consolidated Statements of Operations during the same period in which the hedged transaction affects earnings. We estimate that $13.4 million will be reclassified as a reduction to Interest expense over the next 12 months for all of our outstanding cash flow hedges. Cash flow from these derivative instruments is classified in the same category as the cash flow items being hedged on the Consolidated Statements of Cash Flows.

During the three months ended March 31, 2023, we entered into one interest rate swap contract to hedge variable rate borrowings of £100.0 million (equivalent to $123.7 million on March 31, 2023). The interest rate swap locks in a total fixed rate, inclusive of spread, of 4.808% through the maturity date of April 7, 2025. We also entered into one forward starting interest rate swap contract with an aggregate notional value of $50.0 million to hedge interest rate risk associated with a potential future debt offering.

During the three months ended March 31, 2023, in connection with the 2033 Notes issuance, we settled two $100.0 million 10-year treasury rate lock contracts and one $50.0 million forward swap totaling $250.0 million and received a net settlement payment of $7.4 million. This lowered the effective interest rate on the 2033 Notes from 5.7% to 5.5%. As of the settlement date, the net accumulated gain included in AOCI is being reclassified into earnings as a reduction to interest expense on a straight-line basis over the 10-year term of the hedged transaction.

29

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

The following table presents the gross fair value amounts of our derivative financial instruments and the associated notional amounts (in millions):

	March 31, 2023						December 31, 2022
Derivatives designated as cash flow hedges	Notional		Fair Value of Assets(1)		Fair Value of Liabilities		Notional		Fair Value of Assets(1)		Fair Value of Liabilities
Interest rate derivatives	$	668.4	$	15.2	$	—	$	733.6	$	32.0	$	—

(1)Included within Other Assets, net on the Consolidated Balance Sheets.

Refer to Note 15, "Fair Value of Financial Instruments," for additional information related to the fair value methodology used for derivative financial instruments.

The following table presents the gains / (losses) on derivatives in cash flow hedging relationships recognized in Other Comprehensive Income (in millions):

	Three Months Ended
Derivatives designated as cash flow hedges	March 31, 2023		March 31, 2022
Interest rate derivatives	$	(8.6)	$	24.1

The following table presents the amount of gains / (losses) on derivative instruments reclassified from Accumulated Other Comprehensive Income into earnings (in millions):

	Financial Statement Classification	Three Months Ended
Derivatives designated as cash flow hedges		March 31, 2023		March 31, 2022
Interest rate derivatives	Interest expense	$	2.3	$	(1.1)

15. Fair Value of Financial Instruments

Our financial instruments consist primarily of cash, cash equivalents and restricted cash, marketable securities, notes and other receivables, derivatives assets, debt, warrants and other liabilities. We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures, pursuant to ASC 820, "Fair Value Measurements and Disclosures." The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

ASC 820, "Fair Value Measurements and Disclosures," requires disclosure regarding determination of fair value for assets and liabilities and establishes a hierarchy under which these assets and liabilities must be grouped, based on significant levels of observable or unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumption. This hierarchy requires the use of observable market data when available. These two types of inputs have created the following fair value hierarchy:

Level 1 - Quoted unadjusted prices for identical instruments in active markets that we have the ability to access;

Level 2 - Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs and significant value drivers are observable (e.g., interest rates, yield curves, prepayment speeds, default rates, loss severity, etc.) in active markets or can be corroborated by observable market data; and

Level 3 - Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The unobservable inputs reflect our assumptions about the assumptions that market participants would use.

30

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Assets by Hierarchy Level

The table below sets forth our financial assets and liabilities (in millions) that required disclosure of fair value on a recurring basis as of March 31, 2023. The table presents the carrying values and fair values of our financial instruments as of March 31, 2023 and December 31, 2022, that were measured using the valuation techniques described above. The table excludes other financial instruments such as other receivables and accounts payable as the carrying values associated with these instruments approximate their fair value since their maturities are less than one year. These are classified as Level 1 in the hierarchy.

	March 31, 2023
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	74.8	$	74.8	$	—	$	—	$	74.8
Marketable securities	105.5		105.5		—		—		105.5
Installment notes receivable on manufactured homes, net	62.2		—		—		62.2		62.2
Notes receivable from real estate developers and operators	435.0		—		—		435.0		435.0
Derivative assets	15.2		—		15.2		—		15.2
Total assets measured at fair value	$	692.7	$	180.3	$	15.2	$	497.2	$	692.7
Financial Liabilities
Secured debt	$	3,386.4	$	—	$	3,386.4	$	—	$	3,015.4
Unsecured debt
Senior unsecured notes	2,175.6		—		2,175.6		—		1,926.1
Line of credit and other unsecured debt	1,900.0		—		1,900.0		—		1,900.0
Total unsecured debt	4,075.6		—		4,075.6		—		3,826.1
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,482.2	$	—	$	7,462.0	$	20.2	$	6,861.7

	December 31, 2022
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	90.4	$	90.4	$	—	$	—	$	90.4
Marketable securities	127.3		127.3		—		—		127.3
Installment notes receivable on manufactured homes, net	65.9		—		—		65.9		65.9
Notes receivable from real estate developers and operators	305.2		—		—		305.2		305.2
Derivative assets	32.0		—		32.0		—		32.0
Total assets measured at fair value	$	620.8	$	217.7	$	32.0	$	371.1	$	620.8
Financial Liabilities
Secured debt	$	3,217.8	$	—	$	3,217.8	$	—	$	2,814.1
Unsecured debt
Senior unsecured notes	1,779.6		—		1,779.6		—		1,432.7
Line of credit and other unsecured debt	2,199.8		—		2,199.8		—		2,199.8
Total unsecured debt	3,979.4		—		3,979.4		—		3,632.5
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,217.4	$	—	$	7,197.2	$	20.2	$	6,466.8

31

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash, Cash Equivalents and Restricted Cash

The carrying values of cash, cash equivalents and restricted cash approximate their fair market values due to the short-term nature of the instruments. These are classified as Level 1 in the hierarchy.

Marketable Securities

The fair value of marketable securities is measured by the quoted unadjusted share price which is readily available in active markets (Level 1). The change in the marketable securities balance was as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning Balance	$	127.3	$	186.9
Change in fair value measurement	(19.9)		(53.4)
Foreign currency translation adjustment	(1.9)		(7.7)
Dividend reinvestment, net of tax	—		1.5
Ending Balance	$	105.5	$	127.3

Installment Notes Receivable on Manufactured Homes

Installment notes receivable on manufactured homes are recorded at fair value and are measured using model-derived indicative pricing using primarily unobservable inputs, inclusive of default rates, interest rates and recovery rates (Level 3). Refer to Note 4, "Notes and Other Receivables," for additional information.

Notes Receivable from Real Estate Developers and Operators

Notes receivable from real estate developers and operators are recorded at fair value and are measured using model-derived indicative pricing using primarily unobservable inputs including interest rates and counterparty performance (Level 3). The carrying values of the notes generally approximate their fair market values either due to the nature of the note and / or the note being secured primarily by underlying real estate and real estate related collateral and / or personal guarantees. Refer to Note 4, "Notes and Other Receivables," for additional information.

Derivative Assets - Interest Rate Derivatives

Interest rate derivatives are recorded at fair value and consist of treasury rate lock contracts, interest rate swaps and forward swaps. The fair value of these financial instruments are measured using observable inputs based on the 10-year Treasury note rate, the SOFR and SONIA Rates, respectively (Level 2).

Secured Debt

Secured debt consists primarily of our mortgage term loans. The fair value of mortgage term loans is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans and instruments of comparable maturities (Level 2). Refer to Note 8, "Debt and Line of Credit," for additional information.

Unsecured Debt

Senior unsecured notes - the fair value of senior unsecured notes is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans and instruments of comparable maturities (Level 2). Refer to Note 8, "Debt and Line of Credit," for additional information.

32

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Line of credit and other unsecured debt - consists primarily of our Senior Credit Facility. We have variable rates on our Senior Credit Facility. The fair value of the debt with variable rates approximates carrying value as the interest rates of these amounts approximate market rates. The estimated fair value of our indebtedness as of March 31, 2023 approximated its gross carrying value.

Other Financial Liabilities

We estimate the fair value of contingent consideration liabilities based on valuation models using significant unobservable inputs that generally consider discounting of future cash flows using market interest rates and adjusting for non-performance risk over the remaining term of the liability (Level 3).

Level 3 Reconciliation, Measurements and Transfers

We review the fair value hierarchy classifications each reporting period. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in and out of Level 3 at the beginning fair value for the reporting period in which the changes occur. Availability of secondary market activity and consistency of pricing from third-party sources impacts our ability to classify securities as Level 2 or Level 3. There were no transfers into or out of Level 3 during the three months ended March 31, 2023.

The following tables summarize changes to our financial instruments carried at fair value and classified within Level 3 of the fair value hierarchy for the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023						March 31, 2022
Assets:	Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants		Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants
Level 3 beginning balance at December 31, 2022 and 2021	$	65.9	$	305.2	$	—	$	79.1	$	284.0	$	—
Realized gains / (losses)(1)	(1.7)		—		(0.4)		0.2		—		(0.6)
Purchases and issuances	0.1		124.3		0.4		0.9		30.5		1.2
Sales and settlements	(2.1)		(3.0)		—		(3.0)		(4.1)		—
Dispositions of properties	—		—		—		—		—		—
Foreign currency exchange gain / (losses)	—		8.5		—		—		(6.0)		—
Level 3 ending balance at March 31, 2023 and 2022	$	62.2	$	435.0	$	—	$	77.2	$	304.4	$	0.6

(1) Includes realized gains / (losses) recorded in earnings within the following line items on the Consolidated Income Statements: Warrants - Income from nonconsolidated affiliates; Installment Notes Receivable on MH, net - Gain on remeasurement of notes receivable.

	March 31, 2023		March 31, 2022
Liabilities:	Contingent Consideration		Contingent Consideration
Level 3 beginning balance December 31, 2022 and 2021	$	20.2	$	20.2
Level 3 ending balance at March 31, 2023 and 2022(1)	$	20.2	$	20.2

(1) There was no activity related to the Contingent consideration liability during the three months ended March 31, 2023 and 2022.

Although we have determined the estimated fair value amounts using available market information and commonly accepted valuation methodologies, considerable judgment is required in interpreting market data to develop fair value estimates. The fair value estimates are based on information available as of March 31, 2023. As such, our estimates of fair value could differ significantly from the actual carrying value.

33

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

16. Commitments and Contingencies

Legal Proceedings

We are involved in various legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

Catastrophic Event-Related Charges - Hurricane Ian

In September 2022, Hurricane Ian made landfall on Florida's western coast. The storm primarily affected three properties in the Fort Myers area, comprising approximately 2,500 sites. These properties sustained significant flooding and wind damage from the hurricane. At other affected MH and RV properties, most of the damage was limited to trees, roofs, fences, skirting and carports. At affected marina properties, docks, buildings, and landscaping sustained wind and water damage.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. The table below sets forth estimated insurance recoveries (in millions):

	Three Months Ended March 31, 2023
Total estimated insurance receivable - December 31, 2022	$	54.9
Change in estimated insurance recoveries	22.1
Advances from insurer	(13.5)
Total estimated insurance receivable - March 31, 2023	$	63.5

The foregoing estimates are based on current information available, and we continue to assess these estimates. Actual charges and, insurance recoveries could vary significantly from these estimates. Any changes to these estimates will be recognized in the period(s) in which they are determined.

Changes in estimated insurance recoveries related to Hurricane Ian during the three months ended March 31, 2023 were primarily the result of incremental costs that exceeded the applicable deductible.

Expected insurance recoveries for lost earnings and redevelopment costs greater than asset impairment charges for the three Fort Myers, Florida properties were excluded from our Consolidated Statements of Operations for the three months ended March 31, 2023. We are actively working with our insurer on the related claims. The three Fort Myers, Florida RV communities will require redevelopment, followed by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

34

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

17. Leases

Lessee Accounting

We lease land under non-cancelable operating leases at certain MH, RV and Marina properties expiring at various dates through 2100. The majority of the leases have terms requiring fixed payments plus additional rents based on a percentage of revenues at those properties. We also have other operating leases, primarily office space and equipment expiring at various dates through 2042.

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

Right-of-use ("ROU") assets and lease liabilities for finance and operating leases as included in our Consolidated Balance Sheets are as follows (in millions):

	Financial Statement Classification	As of
Description		March 31, 2023		December 31, 2022
Lease Assets
Finance lease, right-of-use asset, net of accumulated amortization	Investment property, net	$	32.8	$	32.2
Operating lease, right-of-use asset, net	Other assets, net	$	186.8	$	189.4
Below market operating leases, net	Other assets, net	$	90.3	$	90.9
Lease Liabilities
Finance lease liabilities	Other liabilities	$	14.2	$	15.0
Operating lease liabilities	Other liabilities	$	160.0	$	160.3

Lease expense for finance and operating leases as included in our Consolidated Statements of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Finance Lease Expense
Amortization of ROU assets	Depreciation and amortization	$	0.7	$	—
Interest on lease liabilities	Interest expense	0.2		0.1
Operating lease cost	General and administrative expense, Property operating and maintenance, Depreciation and amortization	4.6		3.8
Variable lease cost	Property operating and maintenance	1.6		1.6
Short term lease cost	Property operating and maintenance	—		—
Total Lease Expense		$	7.1	$	5.5

35

SUN COMMUNITIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Lease term, discount rates and additional information for finance and operating leases are as follows:

	As of
	March 31, 2023
Lease Term and Discount Rate
Weighted-average Remaining Lease Terms (years)
Finance lease	36.23
Operating lease	34.11
Weighted-average Discount Rate
Finance lease	3.38	%
Operating lease	3.80	%

	Three Months Ended
	March 31, 2023		March 31, 2022
Other Information (in millions)
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flow from operating leases	$	3.3	$	2.4
Financing cash flow from finance leases	5.9		0.1
Total Cash Paid On Lease Liabilities	$	9.2	$	2.5

Lessor Accounting

We are not the lessor for any finance leases at our MH, RV or Marina properties as of March 31, 2023.

Nearly all of our operating leases with our residents and customers at our MH and RV properties where we are the lessor are either month-to-month or for a time period not to exceed one year. As of March 31, 2023, future minimum lease payments with our residents or customers would not exceed 12 months.

We do not have any operating leases with real estate operators on our MH properties. At our RV communities and marinas, future minimum lease payments under non-cancellable leases with real estate operators where we are the lessor include the following as of March 31, 2023:

Maturity of Lease Payments (in millions)	Operating Leases
2023 (excluding the three months ended March 31, 2023)	$	21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$	118.0

The components of lease income for our operating leases, as included in our Consolidated Statement of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Operating Leases
Fixed lease income	Income from real property; Brokerage commissions and other revenue, net	$	7.9	$	7.1
Variable lease income(1)	Income from real property; Brokerage commissions and other revenue, net	$	1.5	$	0.7

(1)Consists of rent primarily based on a percentage of acquisition costs and net operating income.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(Unaudited)

Failed Sale Leaseback

In connection with our acquisition of Park Holidays, we assumed ground lease arrangements for 34 UK properties that we concluded to be failed sale-leaseback transactions under ASC Topic 842, "Leases." The arrangements have maturities ranging from 2117 through 2197 with an option to repurchase for £1.00 at the end of the term. The obligation related to the underlying ground leases has been recorded as a financial liability of $337.5 million as of March 31, 2023. The financial liability is recorded within Other Liabilities on the Consolidated Balance Sheets. The following table presents the future minimum rental payments for this financial liability as of March 31, 2023:

Maturity of Financial Liability (in millions)	March 31, 2023
2023 (excluding three months ended March 31, 2023)	$	5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	$	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$	337.5

18. Recent Accounting Pronouncements

Recent Accounting Pronouncements - Adopted

In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting," which provides optional guidance for accounting for contracts, hedging relationships and other transactions affected by the reference rate reform, if certain criteria are met. The provisions of this standard are available for election through December 31, 2022. In December 2022, the FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848," which defers the sunset date for Topic 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. As of December 31, 2022, all of our debt and derivative instruments were converted from LIBOR to alternative reference rates. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements as the majority of our debt has fixed interest rates.

19. Subsequent Events

We have evaluated our Consolidated Financial Statements for subsequent events through the date that this Form 10-Q was issued.

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ITEM 2.     MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of the consolidated financial condition and results of operations should be read in conjunction with the Consolidated Financial Statements and the accompanying Notes, along with our 2022 Annual Report.

OVERVIEW

We are a fully integrated REIT. As of March 31, 2023, we owned and operated, directly or indirectly, or had an interest in, a portfolio of 671 developed properties located in the U.S., the UK and Canada, including 354 MH communities, 182 RV communities and 135 marinas. We have been in the business of acquiring, operating, developing and expanding MH and RV communities since 1975 and marinas since 2020. We lease individual sites with utilities access for placement of manufactured homes, RVs or boats to our customers. In the U.S., we are also engaged in the marketing, selling and leasing of new and pre-owned homes to current and future residents in our MH communities. In the UK, we provide holiday home sales and associated site license activities to holiday homeowners in our MH communities. The Rental Program operations within our MH communities support and enhance our occupancy levels, property performance and cash flows.

SIGNIFICANT ACCOUNTING POLICIES

We have identified significant accounting policies that, as a result of the judgments, uncertainties and complexities of the underlying accounting standards and operations involved could result in material changes to our financial condition or results of operations under different conditions or using different assumptions. Details regarding significant accounting policies are described fully in our Annual Report on Form 10-K for the year ended December 31, 2022.

NON-GAAP FINANCIAL MEASURES

In addition to the results reported in accordance with GAAP in our "Results of Operations" below, we have provided information regarding net operating income ("NOI") and funds from operations ("FFO") as supplemental performance measures. We believe NOI and FFO are appropriate measures given their wide use by and relevance to investors and analysts following the real estate industry. NOI provides a measure of rental operations and does not factor in depreciation, amortization and non-property specific expenses such as general and administrative expenses. FFO, reflecting the assumption that real estate values rise or fall with market conditions, principally adjusts for the effects of GAAP depreciation / amortization of real estate assets. In addition, NOI and FFO are commonly used in various ratios, pricing multiples / yields and returns and valuation calculations used to measure financial position, performance and value.

NOI

Total Portfolio NOI - NOI is derived from property operating revenues minus property operating expenses and real estate taxes. NOI is a non-GAAP financial measure that we believe is helpful to investors as a supplemental measure of operating performance because it is an indicator of the return on property investment and provides a method of comparing property performance over time. We use NOI as a key measure when evaluating performance and growth of particular properties and / or groups of properties. The principal limitation of NOI is that it excludes depreciation, amortization, interest expense and non-property specific expenses such as general and administrative expenses, all of which are significant costs. Therefore, NOI is a measure of the operating performance of our properties rather than of the Company overall. We believe that NOI provides enhanced comparability for investor evaluation of properties' performance and growth over time.

We believe that GAAP net income (loss) is the most directly comparable measure to NOI. NOI should not be considered to be an alternative to GAAP net income (loss) as an indication of our financial performance or GAAP cash flow from operating activities as a measure of our liquidity; nor is it indicative of funds available for our cash needs, including our ability to make cash distributions. Because of the inclusion of items such as interest, depreciation and amortization, the use of GAAP net income (loss) as a performance measure is limited as these items may not accurately reflect the actual change in market value of a property, in the case of depreciation and in the case of interest, may not necessarily be linked to the operating performance of a real estate asset, as it is often incurred at a parent company level and not at a property level.

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Same Property NOI - This is a management tool used when evaluating performance and growth of our Same Property portfolio. We define same properties as those we have owned and operated continuously since January 1, 2022. Same properties exclude ground-up development properties, acquired properties and properties sold after December 31, 2021. The Same Property data may change from time-to-time depending on acquisitions, dispositions, management discretion, significant transactions or unique situations. Same Property NOI does not include the revenues and expenses related to home sales, service, retail, dining and entertainment activities at the properties. We believe that same property NOI is helpful to investors as a supplemental comparative performance measure of the income generated from the Same Property portfolio from one period to the next.

FFO

FFO is defined by the National Association of Real Estate Investment Trusts ("NAREIT") as GAAP net income (loss), excluding gains (or losses) from sales of depreciable operating property, plus real estate related depreciation and amortization, real estate related impairments, and after adjustments for unconsolidated partnerships and joint ventures. FFO is a non-GAAP financial measure that management believes is a useful supplemental measure of our operating performance. By excluding gains and losses related to sales of previously depreciated operating real estate assets, real estate related to impairment and real estate asset depreciation and amortization (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO provides a performance measure that, when compared period-over-period, reflects the impact to operations from trends in occupancy rates, rental rates, and operating costs, providing perspective not readily apparent from GAAP net income (loss). Management believes the use of FFO has been beneficial in improving the understanding of operating results of REITs among the investing public and making comparisons of REIT operating results more meaningful.

Core FFO - In addition, we use FFO excluding certain gain and loss items that management considers unrelated to the operational and financial performance of our core business ("Core FFO").

We believe that Core FFO provide enhanced comparability for investor evaluations of period-over-period results. We believe that GAAP net income (loss) is the most directly comparable measure to FFO. The principal limitation of FFO is that it does not replace GAAP net income (loss) as a financial performance measure or GAAP cash flow from operating activities as a measure of our liquidity. Because FFO excludes significant economic components of GAAP net income (loss) including depreciation and amortization, FFO should be used as a supplement to GAAP net income (loss) and not as an alternative to it. Furthermore, FFO is not intended as a measure of a REIT's ability to meet debt principal repayments and other cash requirements, nor as a measure of working capital. FFO is calculated in accordance with our interpretation of standards established by NAREIT, which may not be comparable to FFO reported by other REITs that interpret the NAREIT definition differently.

Catastrophic Event-Related Charges - Hurricane Ian

In September 2022, Hurricane Ian made landfall on Florida's western coast. The storm primarily affected three properties in the Fort Myers area, comprising approximately 2,500 sites. These properties sustained significant flooding and wind damage from the hurricane. At other affected MH and RV properties, most of the damage was limited to trees, roofs, fences, skirting and carports. At affected marina properties, docks, buildings, and landscaping sustained wind and water damage.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. As of March 31, 2023 estimated insurance recoveries of $63.5 million related to Hurricane Ian were recorded in Notes and other receivables, net on the Consolidated Balance Sheets. During the three months ended March 31, 2023, we received insurance recoveries of $13.5 million.

The foregoing estimates are based on current information available, and we continue to assess these estimates. Actual charges and, insurance recoveries could vary significantly from these estimates. Any changes to these estimates will be recognized in the period(s) in which they are determined.

Changes in estimated insurance recoveries related to Hurricane Ian during the three months ended March 31, 2023 were primarily the result of incremental costs that exceeded the applicable deductible.

Expected insurance recoveries for lost earnings and redevelopment costs greater than asset impairment charges for the three Fort Myers, Florida properties were excluded from our Consolidated Statements of Operations for the three months ended March 31, 2023. We are actively working with our insurer on the related claims. The three Fort Myers, Florida RV communities will require redevelopment, followed by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

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SUN COMMUNITIES, INC.

RESULTS OF OPERATIONS

The following tables reconcile the Net income attributable to SUI common shareholders to NOI and summarize our consolidated financial results for the three months ended March 31, 2023 and 2022 (in millions):

	Three Months Ended
	March 31, 2023		March 31, 2022
Net Income / (Loss) Attributable to SUI Common Shareholders	$	(30.1)	$	0.7
Interest income	(11.4)		(6.8)
Brokerage commissions and other revenues, net	(9.5)		(8.0)
General and administrative	63.9		55.7
Catastrophic event-related charges, net	1.0		—
Business combination expense	2.8		0.5
Depreciation and amortization	158.0		148.5
Loss on extinguishment of debt (see Note 8)	—		0.3
Interest expense	76.6		45.2
Interest on mandatorily redeemable preferred OP units / equity	1.0		1.0
Loss on remeasurement of marketable securities (see Note 15)	19.9		34.5
Loss on foreign currency exchanges	2.7		2.2
(Gain) / loss on disposition of property	1.6		(13.4)
Other expense, net	1.0		0.6
(Gain) / loss on remeasurement of notes receivable (see Note 4)	1.7		(0.2)
(Income) / loss from nonconsolidated affiliates (see Note 6)	0.2		(0.9)
(Gain) / loss on remeasurement of investment in nonconsolidated affiliates (see Note 6)	4.5		(0.1)
Current tax expense (see Note 12)	3.9		1.3
Deferred tax benefit (see Note 12)	(4.6)		—
Preferred return to preferred OP units / equity interests	2.4		3.0
Add: Loss attributable to noncontrolling interests	(5.2)		(2.2)
NOI	$	280.4	$	261.9

	Three Months Ended
	March 31, 2023		March 31, 2022
Real property NOI	$	254.7	$	237.6
Home sales NOI	23.1		18.8
Service, retail, dining and entertainment NOI	2.6		5.5
NOI	$	280.4	$	261.9

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SUN COMMUNITIES, INC.

Seasonality of Revenue

The RV and marina industries are seasonal in nature, and the results of operations in any one period may not be indicative of results in future periods.

In the RV business, certain properties maintain higher occupancy during the summer months, while other properties maintain higher occupancy during the winter months. Based on the location of our properties with transient RV sites, our portfolio generally produces higher revenues between April and September than between October and March. As of March 31, 2023, we recognized $39.8 million of Real property - transient revenue in the first quarter. Real property-transient revenue for the year ended December 31, 2022 was recognized as follows:

	Real property - transient revenue (in millions)		For the Three Months Ended
Year			March 31		June 30		September 30		December 31		Total
2022	$	334.5	12.7	%	27.8	%	45.8	%	13.7	%	100.0	%

In the marina business, demand for wet slip storage increases during the summer months as customers contract for the summer boating season. Demand for dry storage increases during the winter season as weather patterns require boat owners to store their vessels on dry docks or within covered racks. As of March 31, 2023, we recognized $72.5 million of seasonal real property revenue in the first quarter. Seasonal real property revenue for the year ended December 31, 2022 was recognized as follows:

	Seasonal real property revenue (in millions)		For the Three Months Ended
Year			March 31		June 30		September 30		December 31		Total
2022	$	310.2	20.1	%	25.6	%	29.0	%	25.3	%	100.0	%

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SUN COMMUNITIES, INC.

Real Property Operations - Total Portfolio

The following tables reflect certain financial and other information for our real estate operations by segment as of and for the three months ended March 31, 2023 and 2022 (in millions, except for statistical information).

	Three Months Ended March 31, 2023																	Three Months Ended March 31, 2022
	MH																	MH
	North America			UK			Total MH			RV				Marinas		Total		North America			UK	Total MH			RV			Marinas		Total
Financial Information
Revenues
Real property (excluding transient)	$	223.5		$	27.5		$	251.0		$	61.8			$	85.2	$	398.0	$	208.3		N/A	$	208.3		$	60.7		$	73.8	$	342.8
Real property - transient	0.5			1.4			1.9			37.8				3.7		43.4		0.5			N/A	0.5			42.0			2.5		45.0
Total operating revenues	224.0			28.9			252.9			99.6				88.9		441.4		208.8			N/A	208.8			102.7			76.3		387.8
Expenses
Property operating expenses	73.4			22.6			96.0			53.8				36.9		186.7		65.3			N/A	65.3			52.6			32.3		150.2
Real Property NOI	$	150.6		$	6.3		$	156.9		$	45.8			$	52.0	$	254.7	$	143.5		N/A	$	143.5		$	50.1		$	44.0	$	237.6
Other information
Number of properties	299			55			354			182				135		671		295			N/A	295			180			128		603
Sites, wet slips and dry storage spaces
Sites, wet slips and dry storage spaces(a)	100,120			17,850			117,970			30,860				47,990		196,820		98,900			N/A	98,900			31,120			45,730		175,750
Transient RV sites(b)	N/A			N/A			—			30,870			(b)	N/A		30,870		N/A			N/A	N/A			29,270			N/A		29,270
Total	100,120			17,850			117,970			61,730				47,990		227,690		98,900			N/A	98,900			60,390			45,730		205,020
MH and Annual RV Occupancy	96.0		%	90.1		%	95.1		%	100.0		%		N/A		N/A		96.7		%	N/A	96.7		%	100.0		%	N/A		N/A

(a) MH annual sites included 9,520 and 9,470 rental homes in the Company's Rental Program at the end of the three months ended March 31, 2023 and 2022, respectively.

(b) Transient RV sites for the quarter ended March 31, 2023 includes 3,260 UK sites.

For the three months ended March 31, 2023, the $17.1 million, or 7.2% increase in Real Property NOI as compared to the same period in 2022, consists of $7.2 million from Same Property MH, $2.0 million from Same Property RV, $6.0 million from Same Property Marina, $6.3 million from the UK operations and a $4.4 million decrease from other recently acquired or developed properties.

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SUN COMMUNITIES, INC.

Real Property Operations - Same Property Portfolio

Same Property refers to properties that we have owned for at least the preceding year, exclusive of properties recently completed or under construction, and other properties as determined by management. The Same Property data may change from time-to-time depending on acquisitions, dispositions, management discretion, significant transactions or unique situations. In order to evaluate the growth of the Same Property portfolio, management has classified certain items differently than our GAAP statement. The reclassification difference between our GAAP statements and our Same Property portfolio is the reclassification of utility revenues from real property revenue to operating expenses. Additionally, prior period Canadian currency figures have been translated at 2022 average exchange rates for constant currency comparability.

The following tables reflect certain financial and other information for our Same Property MH, RV and Marina portfolios as of and for the three months ended March 31, 2023 and 2022 (in millions, except for statistical information):

	Three Months Ended
	March 31, 2023														March 31, 2022									Total Change		% Change  in Total(c)
	MH(a)				RV(a)				Marina			Total			MH(a)		RV(a)			Marina		Total
Financial information
Same Property Revenues
Real property (excluding transient)	$	203.9			$	57.4			$	69.3		$	330.6		$	191.5	$	49.6		$	63.3	$	304.4	$	26.2	8.6	%
Real property - transient	0.3				36.1				3.4			39.8			0.4		38.4			2.3		41.1		(1.3)		(3.2)	%
Total Same Property operating revenues	204.2				93.5				72.7			370.4			191.9		88.0		88.0	65.6		345.5		24.9		7.2	%
Same Property Expenses
Same Property operating expenses(b)(d)	53.9				47.0				26.9			127.8			48.8		43.5			25.8		118.1		9.7		8.2	%
Real Property NOI(d)	$	150.3			$	46.5			$	45.8		$	242.6		$	143.1	$	44.5		$	39.8	$	227.4	$	15.2	6.7	%
Change	7.2				2.0				6.0			15.2
% Change	5.0		%		4.4		%		15.1		%	6.7		%
Other information				54,243				35,055
Number of properties	289				161				119			569			289		161			119		569
Sites, wet slips and dry storage spaces	98,630				54,540				41,000			194,170			97,750		54,240			40,830		192,820

(a) Same property results for our MH and RV properties reflect constant currency for comparative purposes. Canadian currency figures in the prior comparative period have been translated at the average exchange rate during the three months ended March 31, 2023 of $0.7396 USD per Canadian dollar.

(b) We netted total utilities revenues (which include utility reimbursement revenues from residents) of $27.3 million and $24.2 million for the three months ended March 31, 2023 and 2022, respectively, against related utility expenses.

(c) Percentages are calculated based on unrounded numbers.

(d) Total Same Property operating expenses consist of the following components for the periods shown (in millions), and exclude amounts invested into recently acquired properties to bring them up to the Company's standards.

	Three Months Ended				Change		% Change
	March 31, 2023		March 31, 2022
Payroll and benefits	$	42.4	$	39.7	$	2.7	6.8	%
Real estate taxes	27.7		25.2		2.5		9.9	%
Supplies and repairs	14.2		14.6		(0.4)		(2.7)	%
Utilities	14.4		14.9		(0.5)		(3.4)	%
Legal, state / local taxes, and insurance	14.2		9.6		4.6		47.9	%
Other	14.9		14.1		0.8		5.7	%
Total Same Property Operating Expenses	$	127.8	$	118.1	$	9.7	8.2	%

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SUN COMMUNITIES, INC.

Same Property Summary (in whole units)

	Three Months Ended
	March 31, 2023						March 31, 2022
	MH			RV			MH			RV
Number of properties	289			161			289			161
Sites
MH and Annual RV sites	98,630			30,600			97,750			28,460
Transient RV sites	N/A			23,940			—			25,780
Total	98,630			54,540			97,750			54,240
MH and Annual RV Occupancy
Occupancy(a)	96.8		%	100.0		%	96.8		%	100.0		%
Monthly base rent per site	$	648		$	568		$	614		$	524
% change(b)	5.4		%	8.4		%	N/A			N/A
Rental Program Statistics included in MH:
Number of occupied sites, end of period(c)	9,480			N/A			9,470			N/A
Monthly rent per site - MH Rental Program	$	1,245		N/A			$	1,136		N/A
% change(c)	9.6		%	N/A			N/A			N/A

(a) Same Property adjusted blended occupancy for MH and RV combined increased to 98.6% at March 31, 2023, from 96.7% at March 31, 2022. The 190 basis points increase was driven by MH expansion fills and the conversion of transient RV sites to annual sites.

(b) Calculated using actual results without rounding.

(c) Occupied rental program sites in Same Property represents are included in total sites.

For the three months ended March 31, 2023 and 2022:

•The MH segment increase in NOI of $7.2 million, or 5.0%, when compared to the same period in 2022 is primarily due to an increase in Real property (excluding transient) revenue of $12.4 million, or 6.5%, partially offset by increased property operating expenses. Real property (excluding transient) revenue increased primarily due to a 5.4% increase in monthly base rent.

•The RV segment increase in NOI of $2.0 million, or 4.4%, when compared to the same period in 2022 is primarily due to an increase in Real property (excluding transient) revenue of $7.8 million, or 15.6%, combined with a reduction in property operating expenses. The increase in Real property - (excluding transient) revenue was primarily due to an 8.4% increase in monthly base rent and conversions of transient RV sites to annual RV sites.

•The Marina segment increase in NOI of $6.0 million, or 15.1%, when compared to the same period in 2022 is primarily due to the $6.0 million, or 9.5%, increase in Real property (excluding transient) revenue.

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SUN COMMUNITIES, INC.

Home Sales Summary

We sell new and pre-owned homes to current and prospective residents and customers in our communities. This inventory is purchased from manufacturers, lenders, dealers, former residents or customers.

The following table reflects certain financial and statistical information for our Home Sales Program for the three months ended March 31, 2023 and 2022 (in millions, except for average selling price and statistical information):

	Three Months Ended
	March 31, 2023			March 31, 2022			Change			% Change
Financial Information
North America
Home sales	$	47.2		$	64.7		$	(17.5)		(27.0)	%
Home cost and selling expenses	36.6			45.9			(9.3)			(20.3)	%
NOI	$	10.6		$	18.8		$	(8.2)		(43.6)	%
NOI margin %	22.5		%	29.1		%	(6.6)		%
UK
Home sales	$	39.1		N/A			N/A			N/A
Home cost and selling expenses	26.6			N/A			N/A			N/A
NOI	$	12.5		N/A			N/A			N/A
NOI margin %	32.0		%	N/A			N/A
Total
Revenue from home sales	$	86.3		$	64.7		$	21.6		33.4	%
Home cost and selling expenses	63.2			45.9			17.3			37.7	%
Home sales NOI	$	23.1		$	18.8		$	4.3		22.9	%
NOI	26.8		%	29.1		%
Other Information
Total Units Sold:
North America	589			837			(248)			(29.6)	%
UK	583			N/A			N/A			N/A
Total home sales	1,172			837			335			40.0	%
Average Selling Price:
North America	$	80,136		$	77,300		2,836			3.7	%
UK	$	67,067		N/A			N/A			N/A

N/A = Not applicable.

NOI - North America

For the three months ended March 31, 2023, the 43.6% decrease in NOI is primarily driven by a 30.0% decrease in pre-owned home sales volume and an 8.7% decrease in pre-owned home sale gross margins as compared to the same period in 2022.

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Other Items - Statements of Operations(1)

The following table summarizes other income and expenses for the three months ended March 31, 2023 and 2022 (in millions):

	Three Months Ended
	March 31, 2023		March 31, 2022		Change		% Change
Service, retail, dining and entertainment, net	$	2.6	$	5.5	$	(2.9)	(52.7)	%
Interest income	$	11.4	$	6.8	$	4.6	67.6	%
Brokerage commissions and other, net	$	9.5	$	8.0	$	1.5	18.8	%
General and administrative expense	$	63.9	$	55.7	$	8.2	14.7	%
Catastrophic event-related charges, net	$	1.0	$	—	$	1.0	N/A
Business combinations	$	2.8	$	0.5	$	2.3	N/M
Depreciation and amortization	$	158.0	$	148.5	$	9.5	6.4	%
Loss on extinguishment of debt (see Note 8)	$	—	$	0.3	$	(0.3)	(100.0)	%
Interest expense	$	76.6	$	45.2	$	31.4	69.5	%
Interest on mandatorily redeemable preferred OP units / equity	$	1.0	$	1.0	$	—	—	%
Loss on remeasurement of marketable securities (see Note 15)	$	(19.9)	$	(34.5)	$	14.6	(42.3)	%
Loss on foreign currency exchanges	$	(2.7)	$	(2.2)	$	(0.5)	22.7	%
Gain / (loss) on dispositions of properties	$	(1.6)	$	13.4	$	(15.0)	N/M
Other expense, net	$	(1.0)	$	(0.6)	$	(0.4)	66.7	%
Gain / (loss) on remeasurement of notes receivable (see Note 4)	$	(1.7)	$	0.2	$	(1.9)	N/M
Income / (loss) from nonconsolidated affiliates (see Note 6)	$	(0.2)	$	0.9	$	(1.1)	N/M
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates (see Note 6)	$	(4.5)	$	0.1	$	(4.6)	N/M
Current tax expense (see Note 12)	$	(3.9)	$	(1.3)	$	(2.6)	200.0	%
Deferred tax benefit (see Note 12)	$	4.6	$	—	$	4.6	N/A
Preferred return to preferred OP units / equity interests	$	2.4	$	3.0	$	(0.6)	(20.0)	%
Loss attributable to noncontrolling interests	$	(5.2)	$	(2.2)	$	(3.0)	136.4	%

(1)Only items determined by management to be material, of interest, or unique to the periods disclosed above are explained below.

N/M = Percentage change is not meaningful.

N/A = Percentage change is not applicable.

Service, retail, dining and entertainment, net - for the three months ended March 31, 2023, decreased primarily due to increased costs of providing services at our various properties.

Interest income - for the three months ended March 31, 2023, increased primarily due to a higher interest rate charged and a larger loan balance provided to a real estate operator to fund investing and financing activities in the current period as compared to the same period in 2022.

General and administrative expense - for the three months ended March 31, 2023, increased primarily due to the acquisition of Park Holidays, and an increase in wages and incentives driven by growth in strategic initiatives as compared to the same period in 2022.

Catastrophic event-related charges, net - for the three months ended March 31, 2023, increased due to asset impairment charges of $6.5 million resulting from storm-related damages at one Marina property, partially offset by insurance recoveries primarily related to prior claims for Hurricane Irma.

Business combinations - for the three months ended March 31, 2023, increased primarily as a result of the UK 2022 business combinations. Refer to Note 3, "Real Estate Acquisitions and Dispositions," in our accompanying Consolidated Financial Statements for additional information.

Depreciation and amortization - for the three months ended March 31, 2023, increased as a result of property acquisitions during 2022 and 2023. Refer to Note 3, "Real Estate Acquisitions and Dispositions," in our accompanying Consolidated Financial Statements for additional information.

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Interest expense - for the three months ended March 31, 2023, increased due to the higher debt balance and increased interest rates as compared to the same period in 2022. Refer to Note 8, "Debt and Line of Credit," of our accompanying Consolidated Financial Statements for additional information.

Loss on remeasurement of marketable securities - for the three months ended March 31, 2023 was a loss of $19.9 million, as compared to a loss of $34.5 million during the same period in 2022 due to the fluctuation in the price of our publicly traded marketable securities. Refer to Note 15, "Fair Value of Financial Instruments," in our accompanying Consolidated Financial Statements for additional information.

Gain / (loss) on dispositions of properties - for the three months ended March 31, 2023, decreased due to the loss on the sale of two properties as compared to a gain on the sale of three properties during the same period in 2022. Refer to Note 3, "Real Estate Acquisitions and Dispositions," in our accompanying Consolidated Financial Statements for additional information.

Gain / (loss) on remeasurement of investment in nonconsolidated affiliates - for the three months ended March 31, 2023, was a loss of $4.5 million as compared to a gain of $0.1 million during the same period in 2022 due to the fluctuation of the determined fair value of our nonconsolidated affiliates. Refer to Note 6, "Investments in Nonconsolidated Affiliates," and Note 15, "Fair Value of Financial Instruments," in our accompanying Consolidated Financial Statements for additional information.

Current tax expense - for the three months ended March 31, 2023, increased due to income tax expense related to the disposition of two properties in the UK. Refer to Note 3, "Real Estate Acquisitions and Dispositions," in our accompanying Consolidated Financial Statements for additional information.

Deferred tax benefit - for the three months ended March 31, 2023, was $4.6 million resulting from activity related to our acquisition of Park Holidays in the UK. Refer to Note 12, "Income Taxes," in our accompanying Consolidated Financial Statements for additional information.

Loss attributable to noncontrolling interests - for the three months ended March 31, 2023 increased due to a net loss as compared to net income in the same period in 2022.

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RECONCILIATION OF NET INCOME / (LOSS) ATTRIBUTABLE TO SUI COMMON SHAREHOLDERS TO FFO

The following table reconciles Net income / (loss) attributable to SUI common shareholders to FFO for the three months ended March 31, 2023 and 2022 (in millions, except for per share amounts):

	Three Months Ended
	March 31, 2023		March 31, 2022
Net Income / (Loss) Attributable to SUI Common Shareholders	$	(30.1)	$	0.7
Adjustments
Depreciation and amortization	157.3		148.3
Loss on remeasurement of marketable securities	19.9		34.5
(Gain) / loss on remeasurement of investment in nonconsolidated affiliates	4.5		(0.1)
(Gain) / loss on remeasurement of notes receivable	1.7		(0.2)
(Gain) / loss on dispositions of properties, including tax effect	3.5		(13.4)
Add: Returns on preferred OP units	2.1		2.8
Add: Loss attributable to noncontrolling interests	(5.1)		(2.2)
Gain on dispositions of assets, net	(7.9)		(15.1)
FFO Attributable to SUI Common Shareholders and Dilutive Convertible Securities(1)	$	145.9	$	155.3
Adjustments
Business combination expense and other acquisition related costs(2)	6.5		3.1
Loss on extinguishment of debt	—		0.3
Catastrophic event-related charges, net	1.0		—
Loss of earnings - catastrophic event-related charges, net(3)	5.5		—
Loss on foreign currency exchanges	2.7		2.2
Other adjustments, net(4)	(3.6)		1.9
Core FFO Attributable to SUI Common Shareholders and Dilutive Convertible Securities(1)	$	158.0	$	162.8
Weighted Average Common Shares Outstanding - Basic	123.3		115.3
Add
Common shares dilutive effect from forward equity sale	—		0.2
Restricted stock	0.4		0.4
Common OP units	2.4		2.5
Common stock issuable upon conversion of certain preferred OP units	2.1		2.8
Weighted Average Common Shares Outstanding - Diluted	128.2		121.2
FFO Attributable to SUI Common Shareholders and Dilutive Convertible Securities Per Share	$	1.14	$	1.28
Core FFO Attributable to SUI Common Shareholders and Dilutive Convertible Securities Per Share	$	1.23	$	1.34

(1)The effect of certain anti-dilutive convertible securities is excluded from these items.

(2)These costs represent (i) nonrecurring integration expenses associated with acquisitions during the three months ended March 31, 2023, and 2022, (ii) costs associated with potential acquisitions that will not close, (iii) costs associated with the termination of the bridge loan commitment during the quarter ended March 31, 2022 related to the acquisition of Park Holidays and (iv) business combination expenses incurred to bring recently acquired properties up to the Company's operating standards, including items such as tree trimming and painting costs that do not meet the Company's capitalization policy.

(3)Adjustment related to estimated loss of earnings in excess of the applicable business interruption deductible in relation to our three Florida Keys communities that were impaired by Hurricane Irma and our three Fort Myers Florida RV communities that were impaired by Hurricane Ian, which had not yet been received from our insurer.

(4)Other adjustments, net include (i) deferred tax benefit, accelerated deferred compensation amortization, and long-term lease termination expense for the three months ended March 31, 2023, and (ii) RV rebranding non-recurring costs for the three months ended March 31, 2022.

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LIQUIDITY AND CAPITAL RESOURCES

Short-term Liquidity

Our principal short-term liquidity demands historically have been, and are expected to continue to be, distributions to our shareholders and the unit holders of the Operating Partnership, property acquisitions, development and expansion of our properties, capital improvement of our properties, the purchase of new and pre-owned homes, and debt repayment. We intend to meet our short-term liquidity requirements through available cash balances, cash flows generated from operations, draws on our Senior Credit Facility, and the use of debt and equity offerings under our shelf registration statement. Refer to Note 8, "Debt and Line of Credit," and Note 9, "Equity and Temporary Equity," in our accompanying Consolidated Financial Statements for additional information.

We also intend to continue to strengthen our capital and liquidity positions by focusing on our core fundamentals, which are generating positive cash flows from operations, maintaining appropriate debt levels and leverage ratios, and controlling overhead costs. We take a disciplined approach to selecting the optimal mix of financing sources to meet our liquidity demands and minimize our overall cost of capital. In June 2021, we received investment grade ratings of BBB and Baa3 from S&P Global and Moody's, respectively, both with stable outlooks. Our ratings remain unchanged from original receipt. We plan to continue to capitalize on our unsecured bond market access to optimize our cost of capital and increase our financial flexibility.

Current market and economic conditions, including relating to, among other things, interest rates, currency fluctuations, equity valuations and inflation, may adversely affect our ability to obtain debt and equity capital in the short term on attractive terms.

Acquisition, development and expansion activities

Subject to market conditions, we intend to continue to identify opportunities to expand our development pipeline and acquire existing properties. We finance acquisitions through available cash, secured financing, draws on our Senior Credit Facility, the assumption of existing debt on properties and the issuance of debt and equity securities. The current higher interest rate environment may make it more expensive to finance acquisitions and fund developments and expansion. We will continue to evaluate acquisition and development opportunities that meet our underwriting criteria.

During the three months ended March 31, 2023, we acquired one MH community totaling 68 sites and 72 development sites, and one marina totaling 24 wet slips and dry storage spaces, for a total purchase price of approximately $107.0 million.

We have been focused on property ground-up development and expansion opportunities adjacent to our existing properties. During the three months ended March 31, 2023, we acquired three land parcels located in the U.S. and the UK for the potential development of nearly 1,250 sites, expanded our existing communities by over 130 sites and delivered over 200 sites at three ground-up development properties.

We continue to expand our properties utilizing our inventory of owned and entitled land. We have 15,870 MH and RV sites suitable for future development.

Refer to Note 3, "Real Estate Acquisitions and Dispositions," in our accompanying Consolidated Financial Statements for additional detail on acquisitions completed to date.

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Capital Expenditures

Our capital expenditures include lot modifications, growth projects, rebranding, acquisition-related capital expenditures, expansion and development construction costs, rental home purchases and recurring capital expenditures.

Our capital expenditure activity is summarized as follows (in millions):

	Three Months Ended
	March 31, 2023		March 31, 2022
Recurring Capital Expenditures	$	20.8	$	15.8
Non-Recurring Capital Expenditure and Related Activities
Lot Modifications	11.3		6.4
Growth Projects	29.7		22.7
Rebranding	2.0		3.7
Acquisition-related Capital Expenditures	71.6		62.6
Expansion and Development	89.1		47.4
Rental Program	77.3		28.9
Other	—		(4.8)
Total Non-Recurring Capital Expenditure and Related Activities	281.0		166.9
Total Capital Expenditure and Related Activities	$	301.8	$	182.7

Recurring capital expenditures

Property recurring capital expenditures are necessary to maintain asset quality, including purchasing and replacing assets used to operate the communities and marinas. Recurring capital expenditures at our MH and RV properties include items such as: major road, driveway and pool improvements; clubhouse renovations; adding or replacing streetlights; playground equipment; signage; maintenance facilities; manager housing and property vehicles. Recurring capital expenditures at our marinas include items such as: dredging, dock repairs and improvements, and equipment maintenance and upgrades. The minimum capitalized amount is five hundred dollars.

Non-Recurring Capital Expenditures and Related Activities

Lot modifications - lot modification capital expenditures are incurred to modify the foundational structures required to set a new home after a previous home has been removed. These expenditures are necessary to create a revenue stream from a new site renter and often improve the quality of the community. Other lot modification expenditures include land improvements added to annual RV sites to aid in the conversion of transient RV guests to annual contracts.

Growth projects - growth projects consist of revenue generating or expense reducing activities at MH, RV and marina properties. These include, but are not limited to, utility efficiency and renewable energy projects, site, slip or amenity upgrades such as the addition of a garage, shed or boat lift, and other special capital projects that substantiate an incremental rental increase.

Rebranding - rebranding includes new signage at our RV communities and costs of building an RV mobile application and updated website.

Acquisition-related capital expenditures - represent the purchase price paid for the existing operating properties and land parcels for future ground-up development and expansions activities plus the capital improvements identified during due diligence that will be needed to bring acquired properties up to our operating standards. Improvements subsequent to acquisition include upgrading clubhouses; landscaping; new street light systems; new mail delivery systems; pool renovations including larger decks, heaters and furniture; new maintenance facilities; lot modifications; and new signage including main signs and internal road signs. These are considered acquisition costs and although identified during due diligence, often require 24 to 36 months after closing to complete.

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Expansion and development expenditures - consist primarily of construction costs such as roads, activities, and amenities, and costs necessary to complete home and RV site improvements, such as driveways, sidewalks and landscaping at our MH and RV communities. Expenditures also include costs to rebuild after damage has been incurred at MH, RV or marina properties, and research and development.

Rental program - consists of investment in the acquisition of homes intended for the Rental Program and the purchase of vacation rental homes at our RV communities. Expenditures for these investments depend upon the condition of the markets for repossessions and new home sales, rental homes and vacation rental homes.

Cash Flow Activities

Our cash flow activities are summarized as follows (in millions):

	Three Months Ended
	March 31, 2023		March 31, 2022
Net Cash Provided by Operating Activities	$	194.5	$	225.7
Net Cash Used for Investing Activities	$	(321.9)	$	(484.2)
Net Cash Provided by Financing Activities	$	111.6	$	282.9
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	$	0.2	$	—

Cash, cash equivalents and restricted cash decreased by $15.6 million from $90.4 million as of December 31, 2022, to $74.8 million as of March 31, 2023.

Operating activities - Net cash provided by operating activities decreased by $31.2 million to $194.5 million for the three months ended March 31, 2023, compared to $225.7 million for the three months ended March 31, 2022. The decrease in operating cash flow was primarily due to an increase in interest expense during the three months ended March 31, 2023 as compared to the corresponding period in 2022 due to the changing macroeconomic environment, partially offset by improved Same Property operating performance at our MH and RV communities and marinas.

Our net cash flows provided by operating activities from continuing operations may be adversely impacted by, among other things:

•the market and economic conditions in our current markets generally, and specifically in the metropolitan areas of our current markets;

•lower occupancy and rental rates of our properties;

•substantial increases in insurance premiums;

•increases in other operating costs, such as wage and benefit costs, real estate taxes and utilities;

•decreased sales of manufactured homes;

•current volatility in economic conditions and the financial markets; and

•the effects of the COVID-19 pandemic. See "Risk Factors" in Part I, Item 1A of our 2022 Annual Report.

Investing activities - Net cash used for investing activities decreased by $162.3 million to $321.9 million for the three months ended March 31, 2023, compared to $484.2 million for the three months ended March 31, 2022. The decrease in Net cash used for investing activities was primarily driven by a decrease in cash deployed to acquire properties during the three months ended March 31, 2023 as compared to the corresponding period in 2022. Refer to the Consolidated Statements of Cash Flows for detail on the net cash used for investing activities during the three months ended March 31, 2023 and 2022. Refer to Note 3, "Real Estate Acquisitions and Dispositions," and Note 4, "Notes and Other Receivables," in our accompanying Consolidated Financial Statements for additional information on acquisitions and issuance of notes and other receivables.

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Financing activities - Net cash provided by financing activities decreased by $171.3 million to $111.6 million for the three months ended March 31, 2023, compared to $282.9 million for the three months ended March 31, 2022. The decrease in Net cash provided by financing activities was primarily driven by an increase in repayments on our Senior Credit Facility, net of borrowings, partially offset by proceeds from the issuance of senior unsecured notes, during the three months ended March 31, 2023 as compared to the corresponding period in 2022. Refer to the Consolidated Statements of Cash Flows for detail on the net cash provided by financing activities during the three months ended March 31, 2023 and 2022. Refer to Note 8, "Debt and Line of Credit," and Note 9, "Equity and Temporary Equity," in our accompanying Consolidated Financial Statements for additional information.

We are exposed to interest rate variability associated with our outstanding floating rate debt and any maturing debt that has to be refinanced. Interest rate movements impact our borrowing costs and, while as of March 31, 2023, nearly 84% of our total debt was fixed rate financing, including the impact of hedge activity, increases in interest costs are likely to adversely affect our financial results.

Equity and Debt Activity

Public Equity Offerings

In November 2021, we entered into the November 2021 Forward Sale Agreements in connection with an underwritten registered public offering of 4,025,000 shares of our common stock at a public offering price of $185.00 per share. In April 2022, we completed the physical settlement of the 4,025,000 shares of common stock and received aggregate net proceeds of $705.4 million. We used the net proceeds to repay borrowings outstanding under our Senior Credit Facility, and for working capital and general corporate purposes.

At the Market Offering Sales Agreement

In December 2021, we entered into an At the Market Offering Sales Agreement (the "Sales Agreement"), with certain sales agents and forward sellers pursuant to which we may sell, from time to time, up to an aggregate gross sales price of $1.25 billion of our common stock through the sales agents, acting as our sales agents or, if applicable, as forward sellers, or directly to the sales agents as principals for their own accounts. We simultaneously terminated our prior sales agreement upon entering into the Sales Agreement. Through March 2023, we had entered into forward sales agreements under our Sales Agreement for an aggregate gross sales price of $160.6 million.

During the three months ended September 30, 2022, we entered into forward sale agreements with respect to 15,000 shares of common stock under our Sales Agreement for $2.6 million. Additionally, we settled all of our outstanding forward sale agreements with respect to 1,526,212 shares of common stock which includes 620,109; 600,503; 290,600; and 15,000 shares of common stock from the three months ended December 31, 2021, March 31, June 30 and September 30, 2022 forward sale agreements, respectively. The net proceeds of $275.5 million from the settlement of these forward sale agreements were used to repay borrowings outstanding under our Senior Credit Facility.

During the three months ended June 30, 2022, we completed the physical settlement of 1,200,000 shares of common stock under our prior at the market offering program and received net proceeds of $229.5 million. Additionally, we entered into forward sales agreements with respect 290,600 shares of common stock for $50.1 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the three months ended March 31, 2022, we entered into forward sales agreements with respect to 600,503 shares of common stock for $107.9 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the year ended December 31, 2021, we entered into forward sale agreements with respect to 1,820,109 shares of common stock under our prior at the market offering program for $356.5 million. We completed the physical settlement of 1,200,000 and 620,109 shares of common stock during the three months ended June 30, 2022 and September 30, 2022, respectively.

Secured Debt

During the three months ended March 31, 2023, we entered into mortgage term loans totaling $184.1 million related to 27 properties which mature from February 13, 2026 to April 1, 2033, and have a weighted average fixed interest rate of 5.39%. We used the net proceeds to repay borrowings outstanding under our Senior Credit Facility.

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During the year ended December 31, 2022, we entered into a new $20.6 million construction loan, which was undrawn as of March 31, 2023 and a $3.4 million mortgage term loan that are jointly secured by one property. Both loans mature August 10, 2047 and have a fixed interest rate of 3.65%. Additionally, we entered into a mortgage term loan of $226.0 million related to 18 existing encumbered properties which mature between June 15, 2026, and December 15, 2029, and have a fixed interest rate of 4.5%.

During the three months ended September 30, 2022, we repaid $318.0 million of term loans collateralized by 35 properties. These loans had a weighted average interest rate of 4.81% and were set to mature from December 2022 through September 2024.

Senior Unsecured Notes

The following table sets forth certain information regarding our outstanding senior unsecured notes (in millions, except for statistical information). All senior unsecured notes include interest payments on a semi-annual basis in arrears.

			Carrying Amount
	Principal Amount		March 31, 2023		December 31, 2022
5.7% notes, issued in January 2023 and due in January 2033(1)	$	400.0	$	395.4	N/A
4.2% notes, issued in April 2022 and due in April 2032	600.0		592.0		591.8
2.3% notes, issued in October 2021 and due in November 2028	450.0		446.3		446.2
2.7% notes, issued in June 2021 and October 2021, and due in July 2031	750.0		741.9		741.6
Total	$	2,200.0	$	2,175.6	$	1,779.6

(1) In January 2023, the Operating Partnership issued $400.0 million of senior unsecured notes with an interest rate of 5.7% and a 10-year term, due January 15, 2033 (the "2033 Notes"). Interest on the notes is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2023. The net proceeds from the offering were $395.3 million, after deducting underwriters' discounts and estimated offering expenses. We used the net proceeds from the offering to repay borrowings outstanding under our Senior Credit Facility.

The obligations of the Operating Partnership to pay principal, premiums, if any, and interest on our senior unsecured notes are guaranteed on a senior basis by Sun Communities, Inc. The guarantee is full and unconditional, and the Operating Partnership is a consolidated subsidiary of the Company. Under Rule 3-10 of Regulation S-X, as amended, subsidiary issuers of obligations guaranteed by its parent company are not required to provide separate financial statements, provided that the subsidiary obligor is consolidated into the parent company's consolidated financial statements, the parent guarantee is "full and unconditional" and, subject to certain exceptions, the alternative disclosure required by Rule 13-01 is provided, which includes narrative disclosure and summarized financial information. Accordingly, separate consolidated financial statements of the Operating Partnership have not been presented. Furthermore, as permitted under Rule 13-01(a)(4)(vi), we have excluded the summarized financial information for the Operating Partnership as the assets, liabilities and results of operations of the Operating Partnership are not materially different from the corresponding amounts presented in our consolidated financial statements and management believes such summarized financial information would be repetitive and not provide incremental value to investors.

Line of Credit

In April 2022, in connection with the closing of the Park Holidays acquisition, the Operating Partnership as borrower, and SUI, as guarantor, and certain lenders entered into the Credit Facility Amendment, which amended our Senior Credit Facility.

The Credit Facility Amendment increased the aggregate amount of our Senior Credit Facility to $4.2 billion with the ability to upsize the total borrowings by an additional $800.0 million, subject to certain conditions. The increased aggregate amount under the Senior Credit Facility consists of the following: (a) a revolving loan in an amount up to $3.05 billion and (b) a term loan facility of $1.15 billion, with the ability to draw funds from the combined facilities in U.S. dollars, Pound sterling, Euros, Canadian dollars and Australian dollars, subject to certain limitations. The Credit Facility Amendment extended the maturity date of the revolving loan facility to April 7, 2026. At our option that maturity date may be extended two additional six-month periods. In addition, the Credit Facility Amendment established the maturity date of the term loan facility under the Credit Facility Amendment as April 7, 2025, which may not be further extended.

Prior to the Credit Facility Amendment, the Senior Credit Facility permitted aggregate borrowings of up to $2.0 billion, with an accordion feature that allowed for additional commitments of up to $1.0 billion, subject to the satisfaction of certain conditions. Prior to the amendment, $500.0 million of available borrowings under the Senior Credit Facility were scheduled to mature on October 11, 2024, with the remainder scheduled to mature on June 14, 2025. We had no loss on extinguishment of debt related to the Senior Credit Facility during the three months ended March 31, 2023.

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The Senior Credit Facility bears interest at a floating rate based on the Adjusted Term SOFR, the Adjusted Eurocurrency Rate, the Daily RFR, the Australian BBSY, the Daily SONIA Rate or the Canadian Dollar Offered Rate, as applicable, plus a margin, in all cases, which can range from 0.725% to 1.6%, subject to certain adjustments. As of March 31, 2023, the margins based on our credit ratings were 0.85% on the revolving loan facility and 0.95% on the term loan facility. During the three months ended March 31, 2023 and year ended December 31, 2022, we achieved sustainability related requirements resulting in a favorable 0.04% and 0.01% adjustments, respectively, to both margins.

At the lenders' option, the Senior Credit Facility will become immediately due and payable upon an event of default under the Credit Facility Amendment. We had $741.6 million and $1.1 billion of borrowings outstanding under the revolving loan as of March 31, 2023 and December 31, 2022, respectively. We also had $1.1 billion of borrowings outstanding under the term loan on the Senior Credit Facility as of March 31, 2023 and December 31, 2022, respectively. These balances are recorded in Unsecured debt on the Consolidated Balance Sheets.

The Senior Credit Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under the Senior Credit Facility, but does reduce the borrowing amount available. We had $4.8 million and $2.3 million of outstanding letters of credit at March 31, 2023 and December 31, 2022, respectively.

Financial Covenants

Pursuant to the terms of the Senior Credit Facility, we are subject to various financial and other covenants. The most restrictive financial covenants for the Senior Credit Facility are as follows:

Covenant	Requirement	As of March 31, 2023
Maximum leverage ratio	<65.0%	33.1%
Minimum fixed charge coverage ratio	>1.40	3.69
Maximum secured leverage ratio	<40.0%	12.6%

In addition, we are required to maintain the following covenants with respect to the senior unsecured notes payable:

Covenant	Requirement	As of March 31, 2023
Total debt to total assets	≤60.0%	40.8%
Secured debt to total assets	≤40.0%	18.5%
Consolidated income available for debt service to debt service	≥1.50	4.38
Unencumbered total asset value to total unsecured debt	≥150.0%	344.1%

As of March 31, 2023, we were in compliance with the above covenants and do not anticipate that we will be unable to meet these covenants in the near term.

Bridge Loan Termination

In March 2022, we terminated our commitment letter with Citigroup, pursuant to which, Citigroup (on behalf of its affiliates), previously committed to lend us up to £950.0 million in Pound sterling, or approximately $1.2 billion converted at the March 31, 2022 exchange rate (the "Bridge Loan"). As of the date of termination, we did not have any borrowings outstanding under the Bridge Loan.

Derivative Transactions

Our objective and strategy in using interest rate derivatives is to manage exposure to interest rate movements, thereby minimizing the effect of interest rate changes and the effect they could have on future cash outflows (forecasted interest payments) on a forecasted issuance of long-term debt. We do not enter into derivative instruments for speculative purposes.

During the three months ended March 31, 2023, we entered into one interest rate swap contract to hedge variable rate borrowings of £100.0 million (equivalent to $123.7 million on March 31, 2023). The interest rate swap locks in a total fixed rate, inclusive of spread, of 4.81% through the maturity date of April 7, 2025. We also entered into one forward starting interest rate swap contract with an aggregate notional value of $50.0 million to hedge interest rate risk associated with a potential future debt offering.

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SUN COMMUNITIES, INC.

During the three months ended March 31, 2023, in connection with the 2033 Notes issuance, we settled two $100.0 million 10-year treasury rate lock contracts and one $50.0 million forward swap totaling $250.0 million and received a net settlement payment of $7.4 million. This lowered the effective interest rate on the 2033 Notes from 5.7% to 5.5%. As of the settlement date, the net accumulated gain included in AOCI is being reclassified into earnings as a reduction to interest expense on a straight-line basis over the 10-year term of the hedged transaction.

Long-term Financing and Capital Requirements

Long-term Financing

We anticipate meeting our long-term liquidity requirements, such as scheduled debt maturities, large property acquisitions, expansion and development of properties, other nonrecurring capital improvements and Operating Partnership unit redemptions through the long-term unsecured and secured indebtedness and the issuance of certain debt or equity securities subject to market conditions. If current market and economic conditions, including relating to, among other things, interest rates, currency fluctuations, equity valuations and inflation, continue or worsen, our ability to obtain debt and equity capital in the long term on attractive terms may be adversely affected.

As of March 31, 2023 we had unrestricted cash on hand of $57.4 million, $2.2 billion of remaining capacity on the Senior Credit Facility, and a total of 517 unencumbered MH, RV and marina properties.

From time to time, we may also issue shares of our capital stock, issue equity units in our Operating Partnership, issue unsecured notes, obtain other debt financing or sell selected assets. Our ability to finance our long-term liquidity requirements in such a manner will be affected by numerous economic factors affecting the MH, RV and marina industries at the time, including the availability and cost of mortgage debt, our financial condition, the operating history of the properties, the state of the debt and equity markets, and the general national, regional and local economic conditions. When it becomes necessary for us to approach the credit markets, the volatility in those markets could make borrowing more difficult to secure, more expensive or effectively unavailable. In the event our current credit ratings are downgraded, it may become difficult or more expensive to obtain additional financing or refinance existing unsecured indebtedness as maturities become due. See "Risk Factors" in Part I, Item 1A of our 2022 Annual Report. If we are unable to obtain additional debt or equity financing on acceptable terms, our business, results of operations and financial condition would be adversely impacted.

As of March 31, 2023, our net debt to enterprise value was 28.9% (assuming conversion of all common OP units, Series A-1 preferred OP units, Series A-3 preferred OP units, Series C preferred OP units, Series D preferred OP units, Series E preferred OP units, Series F preferred OP units, Series G preferred OP units, Series H preferred OP units, Series J preferred OP units and Series K preferred OP units to shares of common stock). Our debt has a weighted average interest rate of 3.91% and a weighted average years to maturity of 7.4.

Capital Requirements

Certain of our nonconsolidated affiliates, which are accounted for under the equity-method of accounting, have incurred indebtedness. We have not guaranteed the debt of our nonconsolidated affiliates in the arrangements referenced below, nor do we have any obligations to fund this debt should the nonconsolidated affiliates be unable to do so. Refer to Note 6, "Investments in Nonconsolidated Affiliates," in the accompanying Consolidated Financial Statements for additional information about these entities.

GTSC - During September 2019, GTSC entered into a warehouse line of credit with a maximum loan amount of $125.0 million. The line of credit was subsequently amended, with the maximum amount increased to $325.0 million as of December 31, 2022, with an option to increase to $375.0 million subject to the lender's consent. As of March 31, 2023 and December 31, 2022, the aggregate carrying amount of debt, including both our and our partner's share, incurred by GTSC was $302.6 million (of which our proportionate share is $121.0 million), and $275.0 million (of which our proportionate share is $110.0 million), respectively. The debt bears interest at a variable rate based on a Commercial Paper or adjusted SOFR plus a margin ranging from 1.65% to 2.5% per annum and matures on December 15, 2026.

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SUN COMMUNITIES, INC.

Sungenia JV - During May 2020, Sungenia JV, entered into a debt facility agreement with a maximum loan amount of $27.0 million Australian dollars, or $18.1 million converted at the March 31, 2023 exchange rate. During July 2022, the maximum amount was increased to $50.0 million Australian dollars, or $33.5 million converted at the March 31, 2023 exchange rate. As of March 31, 2023 and December 31, 2022, the aggregate carrying amount of the debt, including both our and our partners' share, incurred by Sungenia JV was $12.1 million (of which our proportionate share is approximately $6.1 million), and $7.9 million (of which our proportionate share is $4.0 million), respectively. The debt bears interest at a variable rate based on the BBSY rate plus a margin ranging from 1.35% to 1.4%, subject to adjustment for additional future commitments, per annum and matures on June 30, 2027.

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SUN COMMUNITIES, INC.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This report contains various "forward-looking statements" within the meaning of the Securities Act of 1933, as amended (the "Securities Act"), and the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and we intend that such forward-looking statements will be subject to the safe harbors created thereby. For this purpose, any statements contained in this document that relate to expectations, beliefs, projections, future plans and strategies, trends or prospective events or developments and similar expressions concerning matters that are not historical facts are deemed to be forward-looking statements. Words such as "forecasts," "intends," "intend," "intended," "goal," "estimate," "estimates," "expects," "expect," "expected," "project," "projected," "projections," "plans," "predicts," "potential," "seeks," "anticipates," "anticipated," "should," "could," "may," "will," "designed to," "foreseeable future," "believe," "believes," "scheduled," "guidance," "target" and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these words. These forward-looking statements reflect our current views with respect to future events and financial performance, but involve known and unknown risks and uncertainties, both general and specific to the matters discussed in this document, some of which are beyond our control. These risks, uncertainties, and other factors may cause our actual results to be materially different from any future results expressed or implied by such forward-looking statements. In addition to the risks disclosed under "Risk Factors" in our 2022 Annual Report, and in our other filings with the SEC, from time to time, such risks, uncertainties and other factors include, but are not limited to:

•Outbreaks of disease and related restrictions on business operations;

•Changes in general economic conditions, including inflation, deflation and energy costs, the real estate industry and the markets within which we operate;

•Difficulties in our ability to evaluate, finance, complete and integrate acquisitions, developments and expansions successfully;

•Our liquidity and refinancing demands;

•Our ability to obtain or refinance maturing debt;

•Our ability to maintain compliance with covenants contained in our debt facilities and our unsecured notes;

•Availability of capital;

•Changes in foreign currency exchange rates, including between the U.S. dollar and each of the Canadian dollar, Australian dollar and Pound sterling;

•Our ability to maintain rental rates and occupancy levels;

•Our ability to maintain effective internal control over financial reporting and disclosure controls and procedures;

•Increases in interest rates and operating costs, including insurance premiums and real estate taxes;

•Risks related to natural disasters such as hurricanes, earthquakes, floods, droughts and wildfires;

•General volatility of the capital markets and the market price of shares of our capital stock;

•Our ability to maintain our status as a REIT;

•Changes in real estate and zoning laws and regulations;

•Legislative or regulatory changes, including changes to laws governing the taxation of REITs;

•Litigation, judgments or settlements;

•Competitive market forces;

•The ability of purchasers of manufactured homes and boats to obtain financing; and

•The level of repossessions by manufactured home and boat lenders.

Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date the statement was made. We undertake no obligation to publicly update or revise any forward-looking statements included or incorporated by reference into this document, whether as a result of new information, future events, changes in our expectations or otherwise, except as required by law.

Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. All written and oral forward-looking statements attributable to us or persons acting on our behalf are qualified in their entirety by these cautionary statements.

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SUN COMMUNITIES, INC.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk is the exposure to loss resulting from changes in market factors such as interest rates, foreign currency exchange rates, commodity prices and equity prices.

Interest Rate Risk

Our principal market risk exposure is interest rate risk. We mitigate this risk by maintaining prudent amounts of leverage, minimizing capital costs and interest expense while continuously evaluating all available debt and equity resources and following established risk management policies and procedures, which include the periodic use of derivatives. Our primary strategy in entering into derivative contracts is to minimize the variability that interest rate changes could have on our future cash flows. From time to time, we employ derivative instruments that effectively convert a portion of our variable rate debt to fixed rate debt. We do not enter into derivative instruments for speculative purposes.

Our variable rate debt totaled $1.2 billion and $1.5 billion as of March 31, 2023 and 2022, respectively, after adjusting for the impact of hedging in place through the use of interest rate swaps. As of March 31, 2023, our variable debt bore interest at the Adjusted Term SOFR, the Adjusted Eurocurrency Rate, the Daily RFR, the Australian BBSY rate, the Daily SONIA Rate or the Canadian Dollar Offered Rate, and the Eurodollar rate or Prime rate plus a margin. As of March 31, 2022, our variable debt bore interest at the Adjusted Eurocurrency Rate or the Australian BBSY rate, plus a margin, and the Eurodollar rate or Prime rate. If the above rate increased or decreased by 1.0%, our interest expense would have increased or decreased by $3.5 million and $3.0 million for the three months ended March 31, 2023 and 2022, respectively, based on the $1.4 billion and $1.2 billion average balances outstanding under our variable rate debt facilities, respectively. Our variable rate debt, interest expense and average balance outstanding under our variable rate debt facility includes the impact of hedge activity.

Foreign Currency Exchange Rate Risk

Foreign currency exchange rate risk is the risk that fluctuations in currencies against the U.S. dollar will negatively impact our results of operations. We are exposed to foreign currency exchange rate risk as a result of remeasurement and translation of the assets and liabilities of our properties in the UK and Canada, and our equity investment and joint venture in Australia, into U.S. dollars. Fluctuations in foreign currency exchange rates can therefore create volatility in our results of operations and may adversely affect our financial condition.

At March 31, 2023 and December 31, 2022, our shareholder's equity included $852.1 million and $1.2 billion from our investments and operations in the UK, Canada and Australia which collectively represented 11.0% and 14.9% of total shareholder's equity, respectively. Based on our sensitivity analysis, a 10.0% strengthening of the U.S. dollar against the Pound sterling, Canadian dollar and Australian dollar would have caused a reduction of $85.2 million and $117.9 million to our total shareholder's equity at March 31, 2023 and December 31, 2022, respectively.

Capital Market Risk

We are exposed to risks related to the equity capital markets, and our related ability to raise capital through the issuance of our common stock or other equity instruments. We are also exposed to risks related to the debt capital markets, and our related ability to finance our business through borrowings under other financing arrangements. As a REIT, we are required to distribute a significant portion of our taxable income annually, which constrains our ability to accumulate operating cash flow and therefore requires us to utilize debt or equity capital to finance our business. We seek to mitigate these risks by monitoring the debt and equity capital markets to inform our decisions on the amount, timing and terms of capital we raise.

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ITEM 4.  CONTROLS AND PROCEDURES

Evaluation of disclosure controls and procedures

We maintain disclosure controls and procedures designed to provide reasonable assurance that information required to be disclosed in reports filed under the Exchange Act is recorded, processed, summarized and reported within the specified time periods and accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Our management, with the participation of our CEO and CFO, evaluated the effectiveness of our disclosure controls and procedures (pursuant to Rules 13a-15(e) or 15d-15(e) of the Exchange Act) at March 31, 2023. Based upon this evaluation, our CEO and CFO concluded that our disclosure controls and procedures were effective as of March 31, 2023.

Changes in internal control over financial reporting

There were no changes in our internal control over financial reporting during the three months ended March 31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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SUN COMMUNITIES, INC.

PART II – OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

Legal Proceedings Arising in the Ordinary Course of Business

Refer to "Legal Proceedings" in Part 1 - Item 1 - Note 16, "Commitments and Contingencies," in our accompanying Consolidated Financial Statements.

Environmental Matters

Item 103 of Regulation S-K requires disclosure of certain environmental matters when a governmental authority is a party to the proceedings and such proceedings involve potential monetary sanctions that we reasonably believe will exceed an applied threshold not to exceed $1.0 million. Applying this threshold, there are no environmental matters to disclose for the three months ended March 31, 2023.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the risk factors described in Part 1, Item 1A., "Risk Factors," in our 2022 Annual Report, which could materially affect our business, financial condition or future results. There have been no material changes to the disclosure on these matters as set forth in such report.

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ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Holders of our OP units have converted the following units during the three months ended March 31, 2023:

		Three Months Ended
		March 31, 2023
Series	Conversion Rate	Units / Shares Converted	Common Stock(1)
Aspen preferred OP units	Various(2)	270,000	86,224
Common OP units	1.0000	2,910	2,910
Series C preferred OP units	1.1100	65	72
Series G preferred OP units	0.6452	1,000	645
Series H preferred OP units	0.6098	25	15
Series J preferred OP units	0.6061	1,000	606

(1)Calculation may yield minor differences due to rounding incorporated in the above numbers.

(2)Refer to Note 8, "Debt and Line of Credit," for additional detail on Aspen preferred OP unit conversions.

All of the securities described above were issued in private placements in reliance on Section 4(a)(2) of the Securities Act, including Regulation D promulgated thereunder. No underwriters were used in connection with any of such issuances.

Purchases of Equity Securities

The following table summarizes our common stock repurchases during the three months ended March 31, 2023:

	Total number of shares purchased	Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs	Maximum number (or approximate dollar value) of shares that may yet be purchased under the plans or programs
Period	(a)	(b)		(c)	(d)
January 1, 2023 - January 31, 2023	26,752	$	140.13	—	$	—
February 1, 2023 - February 28, 2023	24,755	$	151.60	—	$	—
March 1, 2023 - March 31, 2023	25,316	$	137.92	—	$	—
Total	76,823	$	143.10	—	$	—

During the three months ended March 31, 2023, we withheld 76,823 shares from employees to satisfy estimated statutory income tax obligations related to vesting of restricted stock awards. The value of the common stock withheld was based on the closing price of our common stock on the applicable vesting date.

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ITEM 6.  EXHIBITS

Exhibit No.	Description	Method of Filing
3.1	Sun Communities, Inc. Articles of Restatement	Incorporated by reference to Exhibit 3.1 to Sun Communities, Inc.’s Annual Report on Form 10-K filed on February 22, 2018
3.2	Fourth Amended and Restated Bylaws	Incorporated by reference to Exhibit 3.1 to Sun Communities, Inc.’s Current Report on Form 8-K filed on February 21, 2023
4.1	Fourth Supplemental Indenture, dated as of January 17, 2023 by and among Sun Communities Operating Limited Partnership, Sun Communities, Inc. and UMB Bank., N.A. as trustee.	Incorporated by reference to Exhibit 4.2 to Sun Communities Inc.'s Current Report on Form 8-K filed on January 17, 2023
4.2	Form of Global Note for 5.700% Notes due 2033	Incorporated by reference to Exhibit 4.3 to Sun Communities Inc.'s Current Report on Form 8-K filed on January 17, 2023
4.3*	Eleventh Amendment to Agreement of Limited Partnership of Sun Communities Operating Limited Partnership, dated March 23, 2023	Incorporated by reference to Exhibit 10.1 to Sun Communities, Inc.’s Current Report on Form 8-K filed on March 27, 2023
22.1	List of issuers of guaranteed securities	Filed herewith
31.1	Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15(d)-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
31.2	Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15(d)-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Filed herewith
101.INS	XBRL Instance Document	The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Document	Filed herewith
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document	Filed herewith
101.LAB	XBRL Taxonomy Extension Label Linkbase Document	Filed herewith
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	Filed herewith
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document	Filed herewith
104	Cover Page Interactive Data File (embedded within the Inline XBRL document contained in Exhibit 101)	Filed herewith
*Certain schedules and exhibits have been omitted pursuance to Item 601(a)(5) of Regulation S-K because such schedules and exhibits do not contain information which is material to an investment decision, or which is not otherwise disclosed in the filed agreements. The Company will furnish the omitted schedules and exhibits to the SEC upon request by the SEC.

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SUN COMMUNITIES, INC.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: April 27, 2023	By:	/s/ Fernando Castro-Caratini
		Executive Vice President, Chief Financial Officer, Treasurer and Secretary (Principal Financial Officer and Principal Accounting Officer)

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EX-22.1

List of Issuers of Guaranteed Securities

As of April 27, 2023, the debt instruments indicated below are fully and unconditionally guaranteed by Sun Communities, Inc.

Debt Instrument	Issuer	Jurisdiction of Organization
2.3% Senior Notes due 2028	Sun Communities Operating Limited Partnership	Michigan
2.7% Senior Notes due 2031	Sun Communities Operating Limited Partnership	Michigan
4.2% Senior Notes due 2032	Sun Communities Operating Limited Partnership	Michigan
5.7% Senior Notes due 2033	Sun Communities Operating Limited Partnership	Michigan

EX-31.1

Exhibit 31.1

CERTIFICATIONS

(As Adopted Under Section 302 of the Sarbanes-Oxley Act of 2002)

I, Gary A. Shiffman, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Sun Communities, Inc.

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)    Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)    Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting.

5.    The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):

a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: April 27, 2023	/s/ Gary A. Shiffman
	Gary A. Shiffman, Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

(As Adopted Under Section 302 of the Sarbanes-Oxley Act of 2002)

I, Fernando Castro-Caratini, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Sun Communities, Inc.

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)    Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)    Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: April 27, 2023	/s/ Fernando Castro-Caratini
	Fernando Castro-Caratini, Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

(Adopted Under Section 906 of the Sarbanes-Oxley Act of 2002)

The undersigned officers, Gary A. Shiffman and Fernando Castro-Caratini, hereby certify that to the best of their knowledge: (a) this Quarterly Report on Form 10-Q of Sun Communities, Inc., for the period ended March 31, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and (b) the information contained in this Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

Signature	Date
/s/ Gary A. Shiffman	April 27, 2023
Gary A. Shiffman, Chief Executive Officer
/s/ Fernando Castro-Caratini	April 27, 2023
Fernando Castro-Caratini, Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Sun Communities, Inc. and will be retained by Sun Communities, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2023	Apr. 20, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity Registrant Name	SUN COMMUNITIES, INC
Entity Incorporation, State or Country Code	MD
Entity File Number	1-12616
Entity Tax Identification Number	38-2730780
Entity Address, Address Line One	27777 Franklin Rd,
Entity Address, Address Line Two	Suite 300,
Entity Address, City or Town	Southfield,
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48034
City Area Code	248
Local Phone Number	208-2500
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	SUI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		124,408,144
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000912593
Current Fiscal Year End Date	--12-31

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Assets
Land	$ 3,974.1	$ 4,322.3
Land improvements and buildings	11,202.1	10,903.4
Rental homes and improvements	672.8	645.2
Furniture, fixtures and equipment	869.7	839.0
Investment property	16,718.7	16,709.9
Accumulated depreciation	(2,867.9)	(2,738.9)
Investment property, net	13,850.8	13,971.0
Cash, cash equivalents and restricted cash	74.8	90.4
Marketable securities	105.5	127.3
Inventory of manufactured homes	232.5	202.7
Notes and other receivables, net	716.7	617.3
Goodwill	1,092.6	1,018.4
Other intangible assets, net	392.7	402.0
Other assets, net	898.2	655.1
Total Assets	17,363.8	17,084.2
Liabilities
Secured debt	3,386.4	3,217.8
Unsecured debt	4,075.6	3,979.4
Distributions payable	118.0	111.3
Advanced reservation deposits and rent	433.8	352.1
Accrued expenses and accounts payable	340.9	396.3
Other liabilities	940.1	935.9
Total Liabilities	9,294.8	8,992.8
Temporary equity	298.9	202.9
Shareholders' Equity
Common stock, $0.01 par value. Authorized: 180.0 shares; Issued and outstanding: 124.4 at March 31, 2023 and 124.0 at December 31, 2022	1.2	1.2
Additional paid-in capital	9,556.4	9,549.7
Accumulated other comprehensive income / (loss)	7.7	(9.9)
Distributions in excess of accumulated earnings	(1,875.0)	(1,731.2)
Total SUI shareholders' equity	7,690.3	7,809.8
Noncontrolling interests
Common and preferred OP units	79.8	78.7
Total noncontrolling interests	79.8	78.7
Total Shareholders' Equity	7,770.1	7,888.5
Total Liabilities, Temporary Equity and Shareholders' Equity	$ 17,363.8	$ 17,084.2

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	180,000,000	180,000,000.0
Common stock issued (in shares)	124,400,000	124,000,000.0
Common stock outstanding (in shares)	124,421,717	124,000,000.0

XML

Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues
Real property	$ 441.4	$ 387.8
Home sales	86.3	64.7
Service, retail, dining and entertainment	102.6	81.2
Interest	11.4	6.8
Brokerage commissions and other, net	9.5	8.0
Total Revenues	651.2	548.5
Expenses
Property operating and maintenance	156.6	124.1
Real estate tax	30.1	26.1
Home costs and selling	63.2	45.9
Service, retail, dining and entertainment	100.0	75.7
General and administrative	63.9	55.7
Catastrophic event-related charges, net	1.0	0.0
Business combinations	2.8	0.5
Depreciation and amortization	158.0	148.5
Loss on extinguishment of debt	0.0	0.3
Interest	76.6	45.2
Interest on mandatorily redeemable preferred OP units / equity	1.0	1.0
Total Expenses	653.2	523.0
Income / (Loss) Before Other Items	(2.0)	25.5
Loss on remeasurement of marketable securities	(19.9)	(34.5)
Loss on foreign currency exchanges	(2.7)	(2.2)
Gain / (loss) on dispositions of properties	(1.6)	13.4
Other expense, net	(1.0)	(0.6)
Gain / (loss) on dispositions of properties	(1.7)	0.2
Income / (loss) from nonconsolidated affiliates	(0.2)	0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates	(4.5)	0.1
Current tax expense	(3.9)	(1.3)
Deferred tax benefit	4.6	0.0
Net Income / (Loss)	(32.9)	1.5
Less: Preferred return to preferred OP units / equity interests	2.4	3.0
Less: Loss attributable to noncontrolling interests	(5.2)	(2.2)
Net Income / (Loss) Attributable to SUI Common Shareholders	$ (30.1)	$ 0.7
Weighted average common shares outstanding:
Weighted average common shares outstanding - basic (in shares)	123.3	115.3
Diluted weighted average common shares outstanding - diluted (in shares)	126.2	115.9
Earnings per share:
Basic earning / (loss) per share (in dollars per share)	$ (0.24)	$ 0.01
Diluted earning / (loss) per share (in dollars per share)	$ (0.24)	$ 0.01

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Consolidated Statements Of Comprehensive Income / (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Income / (Loss)	$ (32.9)	$ 1.5
Foreign Currency Translation:
Foreign currency translation gain / (loss) arising during period	17.2	(1.3)
Adjustment for foreign currency translation (gain) / loss reclassified into earnings	11.9	0.0
Net foreign currency translation gain / (loss)	29.1	(1.3)
Cash Flow Hedges:
Change in unrealized gain / (loss) on interest rate derivatives	(8.6)	24.1
Less: interest rate derivative (gain) / loss reclassified to earnings	(2.3)	1.1
Net unrealized gain / (loss) on interest rate derivatives	(10.9)	25.2
Total Comprehensive Income / (Loss)	(14.7)	25.4
Less: Comprehensive loss attributable to noncontrolling interests	4.6	1.1
Comprehensive Income / (Loss) attributable to SUI	$ (10.1)	$ 26.5

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Consolidated Statement Of Shareholders' Equity - USD ($)	Total	Series K preferred OP units	Temporary Equity	Temporary Equity Series K preferred OP units	Common Stock	Additional Paid-in Capital	Distributions in Excess of Accumulated Earnings	Accumulated Other Comprehensive Income	Non-controlling Interests	Total Stockholders' Equity	Total Equity	Total Equity Series K preferred OP units
Beginning balance at Dec. 31, 2021			$ 288,900,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of third party equity interests in consolidated entities	$ 0
Issuance of stock and units						$ (200,000)			$ 2,800,000	$ 2,600,000	$ 2,600,000
Net income / (loss)			(3,100,000)
Distributions			(2,100,000)
OP Units accretion			200,000				$ (100,000)			(100,000)	100,000
Ending balance at Mar. 31, 2022			283,900,000
Beginning balance (in shares) at Dec. 31, 2021					116,000,000.0
Beginning Balance at Dec. 31, 2021					$ 1,200,000	8,175,600,000	(1,556,000,000)	$ 3,100,000	106,700,000	6,730,600,000	7,019,500,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock and units (in shares)					300,000
Issuance of stock and units						(200,000)			2,800,000	2,600,000	2,600,000
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards (in shares)					(100,000)
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards						(16,400,000)				(16,400,000)	(16,400,000)
Conversion of OP units						700,000			(700,000)
Share-based compensation - amortization and forfeitures						9,700,000	100,000			9,800,000	9,800,000
Other comprehensive income								22,800,000	1,100,000	23,900,000	23,900,000
Net income / (loss)	700,000						3,700,000		900,000	4,600,000	1,500,000
Distributions							(102,300,000)		(3,100,000)	(105,400,000)	(107,500,000)
OP Units accretion			200,000				(100,000)			(100,000)	100,000
Ending balance (in shares) at Mar. 31, 2022					116,200,000
Ending Balance at Mar. 31, 2022					$ 1,200,000	8,169,400,000	(1,654,600,000)	25,900,000	107,700,000	6,649,600,000	6,933,500,000
Beginning balance at Dec. 31, 2022		$ 0	202,900,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of third party equity interests in consolidated entities	(1,700,000)		1,700,000								1,700,000
Issuance of stock and units				$ 100,000,000.0					4,400,000	4,400,000	4,400,000	$ 100,000,000.0
Net income / (loss)			(4,400,000)
Distributions		(0.040)	(1,600,000)
OP Units accretion			300,000				(300,000)			(300,000)
Ending balance at Mar. 31, 2023		$ 99,900,000	298,900,000
Beginning balance (in shares) at Dec. 31, 2022					124,000,000.0
Beginning Balance at Dec. 31, 2022	7,888,500,000				$ 1,200,000	9,549,700,000	(1,731,200,000)	(9,900,000)	78,700,000	7,888,500,000	8,091,400,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock and units (in shares)					400,000
Issuance of stock and units				$ 100,000,000.0					4,400,000	4,400,000	4,400,000	$ 100,000,000.0
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards (in shares)					(100,000)
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards						(11,000,000.0)				(11,000,000.0)	(11,000,000.0)
Conversion of OP units (in shares)					100,000
Conversion of OP units						7,300,000				7,300,000	7,300,000
Share-based compensation - amortization and forfeitures						10,400,000				10,400,000	10,400,000
Other comprehensive income								17,600,000	600,000	18,200,000	18,200,000
Net income / (loss)	$ (30,100,000)						(27,700,000)		(800,000)	(28,500,000)	(32,900,000)
Distributions							(115,800,000)		(3,100,000)	(118,900,000)	(120,500,000)
OP Units accretion			$ 300,000				(300,000)			(300,000)
Ending balance (in shares) at Mar. 31, 2023	3,080,847				124,400,000
Ending Balance at Mar. 31, 2023	$ 7,770,100,000				$ 1,200,000	$ 9,556,400,000	$ (1,875,000,000)	$ 7,700,000	$ 79,800,000	$ 7,770,100,000	$ 8,069,000,000

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Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Cash Provided By Operating Activities	$ 194.5	$ 225.7
Investing Activities
Investment in properties	(301.8)	(182.7)
Acquisitions, net of cash acquired	(47.9)	(299.0)
Proceeds from deposit on acquisition	1.4	0.0
Proceeds from insurance	4.9	0.0
Proceeds from disposition of assets and depreciated homes, net	15.5	24.7
Proceeds related to disposition of properties	0.2	0.1
Issuance of notes and other receivables	(6.2)	(25.8)
Repayments of notes and other receivables	3.3	1.3
Investments in nonconsolidated affiliates	(2.7)	(6.4)
Distributions of capital from nonconsolidated affiliates	11.4	3.6
Net Cash Used For Investing Activities	(321.9)	(484.2)
Financing Activities
Issuance and costs of common stock, OP units and preferred OP units, net	0.0	(0.2)
Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards	(11.0)	(16.4)
Borrowings on lines of credit	626.0	474.7
Payments on lines of credit	(951.1)	(58.2)
Proceeds from issuance of other debt	583.0	0.9
Contributions from noncontrolling interest	1.7	0.0
Payments on other debt	(19.8)	(15.4)
Fees paid in connection with extinguishment of debt	0.0	(0.3)
Proceeds received from return of prepaid deferred financing costs	2.0	0.0
Distributions	(113.6)	(101.4)
Payments for deferred financing costs	(5.6)	(0.8)
Net Cash Provided By Financing Activities	111.6	282.9
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.2	0.0
Net change in cash, cash equivalents and restricted cash	(15.6)	24.4
Cash, cash equivalents and restricted cash, beginning of period	90.4	78.2
Cash, Cash Equivalents and Restricted Cash, End of Period	74.8	102.6
Supplemental Information
Cash paid for interest, net	72.2	46.2
Cash paid for interest on mandatorily redeemable debt	1.0	1.0
Cash paid for income taxes	10.0	0.1
Noncash investing and financing activities
Change in distributions declared and outstanding	6.9	6.0
Conversion of common and preferred OP units	7.3	0.7
Assets held for sale	262.1	0.0
Proceeds related to disposition of properties through 1031 exchange	0.0	28.7
ROU asset obtained from new operating lease liabilities	0.2	0.0
Issuance of notes and other receivables in relation to disposition of properties	111.2	0.0
Common Stock And OP Units
Noncash investing and financing activities at the date of acquisition
Acquisitions	4.5	2.8
Series K preferred OP units
Noncash investing and financing activities at the date of acquisition
Acquisitions	$ 100.0	$ 0.0

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Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Cash Flows [Abstract]
Interest Costs Capitalized	$ 2.5	$ 1.0

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Basis of Presentation

3 Months Ended

Mar. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

1. Basis of Presentation

Sun Communities, Inc., a Maryland corporation, and all wholly-owned or majority-owned and controlled subsidiaries, including Sun Communities Operating Limited Partnership (the "Operating Partnership"), Sun Home Services, Inc. ("SHS"), Safe Harbor Marinas, LLC ("Safe Harbor") and Sun UK Holding LLC (together with its subsidiaries, "Park Holidays") are referred to herein as the "Company," "SUI," "we," "us," and "our."

We follow accounting standards set by the Financial Accounting Standards Board ("FASB"). FASB establishes accounting principles generally accepted in the United States of America ("GAAP"), which we follow to ensure that we consistently report our financial condition, results of operations and cash flows. References to GAAP issued by the FASB in these footnotes are to the FASB Accounting Standards Codification ("ASC"). These unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for interim financial information and in accordance with GAAP. We present interim disclosures and certain information and footnote disclosures as required by SEC rules and regulations. Accordingly, the unaudited Consolidated Financial Statements do not include all of the information and footnotes required by GAAP for complete financial statements. The accompanying unaudited Consolidated Financial Statements reflect, in the opinion of management, all adjustments, including adjustments of a normal and recurring nature, necessary for a fair presentation of the interim financial statements. All significant intercompany transactions have been eliminated in consolidation.

Certain prior period amounts have been reclassified to conform with current presentation, with no effect on net income. These include reclassification of certain revenues and expenses between Real property and Service, retail, dining and entertainment within our Marina segment. There was no impact to prior period net income, shareholders equity or cash flows for any of the reclassifications. Further, the reclassification had no impact on previously reported total marina net operating income ("NOI").

The results of operations for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022 as filed with the SEC on February 23, 2023 (our "2022 Annual Report"). These statements have been prepared on a basis that is substantially consistent with the accounting principles applied in our 2022 Annual Report.

Our three reportable segments are: (i) Manufactured home ("MH") communities, (ii) Recreational vehicle ("RV") communities and (iii) Marinas.

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Revenue

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Revenue

2. Revenue

The following table disaggregates our revenue by major source and segment (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Revenues
Real property	$	252.9	$	99.6	$	88.9	$	441.4	$	208.8	$	102.7	$	76.3	$	387.8
Home sales	79.9		6.4		—		86.3		58.0		6.7		—		64.7
Service, retail, dining and entertainment	5.4		5.8		91.4		102.6		2.3		7.3		71.6		81.2
Interest	10.3		0.9		0.2		11.4		6.2		0.6		—		6.8
Brokerage commissions and other, net	4.2		4.4		0.9		9.5		4.2		3.5		0.3		8.0
Total Revenues	$	352.7	$	117.1	$	181.4	$	651.2	$	279.5	$	120.8	$	148.2	$	548.5

Our revenue consists of real property revenue at our MH, RV and Marina properties, revenue from Home sales, Service, retail, dining and entertainment revenue, Interest income, and Brokerage commissions and other revenue.

The majority of our revenue is derived from site and home leases, and wet slip and dry storage space leases that are accounted for pursuant to ASC 842, "Leases." We account for all revenue from contracts with customers following ASC 606, "Revenue from Contracts with Customers," except for those that are within the scope of other topics in the FASB ASC. For additional information, refer to Note 1, "Significant Accounting Policies," in our 2022 Annual Report.

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Real Estate Acquisitions and Dispositions

3 Months Ended

Mar. 31, 2023

Business Combinations [Abstract]

Real Estate Acquisitions and Dispositions

3. Real Estate Acquisitions and Dispositions

2023 Acquisitions

During the three months ended March 31, 2023, we acquired the following properties:

Community Name	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Fox Run	MH: asset acquisition	68	72	MI	January
Savannah Yacht Center	Marina: asset acquisition	24	—	GA	March
	Total	92	72

The following table summarizes the amount of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed during the three months ended March 31, 2023 (in millions):

	At Acquisition Date								Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		Other assets, net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity(1)		Total consideration
Asset Acquisition
Fox Run(2)(3)	$	7.0	$	0.2	$	—	$	7.2	$	2.7	$	4.5	$	7.2
Savannah Yacht Center(2)(4)	100.0		—		4.5		104.5		4.5		100.0		104.5
Total	$	107.0	$	0.2	$	4.5	$	111.7	$	7.2	$	104.5	$	111.7

(1) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(2) The above allocations are estimates pending purchase price allocations.

(3) In conjunction with the acquisition, the Operating Partnership issued 31,289 common OP units valued at $4.5 million.

(4) In conjunction with the acquisition, the Operating Partnership issued one million Series K preferred OP units valued at $100.0 million.

As of March 31, 2023, we have incurred and capitalized $2.6 million of transaction costs, which have been allocated among various fixed asset categories for purchases that meet the asset acquisition criteria. During the three months ended March 31, 2023, we recognized $2.8 million of business combination expenses in connection with transactions completed during 2022.

2023 Development and Expansion Activities

During the three months ended March 31, 2023, we acquired three land parcels located in the United States ("U.S.") and United Kingdom ("UK") for an aggregate purchase price of $34.9 million.

2023 Dispositions

In February 2023, we sold two parcels of land in the UK for total consideration of $111.5 million, which primarily consisted of $108.8 million in the form of an operator note receivable that was added to an existing facility with a weighted average interest rate of 11.9% per annum, due May 31, 2023. On the date of sale, the carrying value of the note receivable approximates its fair value due to its short term nature. The dispositions resulted in a loss on sale totaling $1.6 million, net of the release of foreign currency translation losses from Accumulated other comprehensive income of $11.9 million. The total loss on sale was recorded in Gain / (loss) on dispositions of properties on the Consolidated Statements of Operations.

Real Estate Held For Sale

We periodically classify real estate as "held for sale." An asset is classified as held for sale after an active program to sell an asset has commenced and when the sale is probable. Subsequent to the classification of assets as held for sale, no further depreciation expense is recorded.

In February 2023, we reached an agreement to sell an operating MH community in the UK with 730 developed sites for approximately $240.0 million in the form of a note receivable. As a result, the carrying value of total assets of $262.2 million and total liabilities of $64.0 million were reclassified to held for sale as of March 31, 2023. The held for sale assets primarily consist of Land and Land improvements and buildings and are recorded within Other assets, net on the Consolidated Balance Sheets. The held for sale liabilities primarily consist of Deferred tax liabilities and are recorded within Other liabilities on the Consolidated Balance Sheets.

2022 Acquisitions

For the year ended December 31, 2022, we acquired the following properties:

Property Name(1)	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Harrison Yacht Yard(2)	Marina: asset acquisition	21	—	MD	January
Outer Banks	Marina: asset acquisition	196	—	NC	January
Jarrett Bay Boatworks	Marina: business combination	12	—	NC	February
Tower Marine	Marina: asset acquisition	446	—	MI	March
Sandy Bay	MH: asset acquisition	730	456	UK	March
Park Holidays(3)	MH: business combination	15,906	608	UK	April
Christies Parks(2)	MH: asset acquisition	249	—	UK	April
Bluewater	Marina: asset acquisition	200	—	Multiple	April
Bluewater Yacht Sales(2)	Marina: business combination	—	—	Multiple	April
Bodmin Holiday Park	MH: asset acquisition	69	—	UK	April
Kittery Point	Marina: asset acquisition	62	—	ME	May
Spanish Trails MHC	MH: asset acquisition	195	6	AZ	June
Pine Acre Trails	MH: asset acquisition	251	603	TX	June
Bel Air Estates & Sunrise Estates(4)	MH: asset acquisition	379	—	CA	June
Park Leisure(5)	MH: business combination	2,914	123	UK	June
Montauk Yacht Club	Marina: business combination	232	—	NY	July
Callaly Leisure(6)	MH: asset acquisition	380	823	UK	September
Newhaven	MH: asset acquisition	224	14	UK	October
Bayfront Marina	Marina: asset acquisition	583	—	CA	November
Marina Bay Yacht Harbor	Marina: asset acquisition	800	—	CA	December
Jellystone Lincoln	RV: asset acquisition	267	—	DE	December
Norway Commons	MH: asset acquisition	231	22	ME	December
	Total	24,347	2,655

(1) Property names are subject to changes subsequent to acquisition.

(2) Combined with an existing property.

(3) Includes 40 owned and two managed properties.

(4) Includes two properties.

(5) Includes 11 properties.

(6) Includes one development property.

The following table summarizes the amounts of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2022 (in millions):

	At Acquisition Date										Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		In-place leases, goodwill and other intangible assets(1)		Other assets / (liabilities), net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity		Total consideration
Asset Acquisition
Harrison Yacht Yard(4)	$	5.8	$	—	$	—	$	—	$	5.8	$	5.8	$	—	$	5.8
Outer Banks	5.2		—		—		(0.4)		4.8		4.8		—		4.8
Tower Marine	20.2		—		0.2		(2.1)		18.3		18.3		—		18.3
Sandy Bay	247.9		9.4		2.1		(68.3)		191.1		191.1		—		191.1
Christies Parks(4)	10.1		—		—		2.1		12.2		12.2		—		12.2
Bluewater	25.3		1.3		0.1		1.3		28.0		28.0		—		28.0
Bodmin Holiday Park	13.1		—		—		—		13.1		13.1		—		13.1
Kittery Point	8.0		0.1		—		(0.1)		8.0		7.0		1.0		8.0
Spanish Trails MHC	20.6		1.8		—		—		22.4		22.4		—		22.4
Pine Acre Trails	29.7		—		—		—		29.7		29.7		—		29.7
Bel Air Estates & Sunrise Estates	39.3		—		0.7		—		40.0		40.0		—		40.0
Callaly Leisure	23.8		0.1		—		(0.3)		23.6		23.6		—		23.6
Newhaven	6.2		—		—		—		6.2		6.2		—		6.2
Bayfront Marina	11.3		—		0.9		(0.5)		11.7		11.7		—		11.7
Marina Bay Yacht Harbor	16.2		—		0.2		(0.7)		15.7		15.7		—		15.7
Jellystone Lincoln(5)	17.0		—		—		1.2		18.2		18.2		—		18.2
Norway Commons	15.1		0.4		0.3		—		15.8		15.8		—		15.8
Business Combination
Jarrett Bay Boatworks(6)	21.3		1.4		47.5		1.0		71.2		68.4		2.8		71.2
Park Holidays(7)	1,254.7		29.5		574.5		(624.9)		1,233.8		1,199.9		33.9		1,233.8
Park Leisure(8)	259.5		0.7		77.5		(111.9)		225.8		225.8		—		225.8
Montauk Yacht Club	163.6		0.3		26.3		0.3		190.5		190.5		—		190.5
Total	$	2,213.9	$	45.0	$	730.3	$	(803.3)	$	2,185.9	$	2,148.2	$	37.7	$	2,185.9

(1) Refer to Note 5, "Goodwill and Other Intangible Assets," for additional detail on goodwill and other intangible assets.

(2) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(3) Property names are subject to changes subsequent to acquisition.

(4) Combined with an existing property.

(5) In December 2020, we entered into a loan agreement pursuant to which we extended credit to Blue Water to finance the construction of Jellystone Lincoln (the "RV Park"). In December 2022, we entered into a purchase and sale agreement pursuant to which we purchased the RV Park for cash consideration of $5.0 million, which was applied toward the existing Blue Water loan balance of $12.9 million, and the remaining loan balance of $7.9 million was forgiven. Upon acquisition of the RV Park, we agreed to loan Blue Water an amount equal to $3.7 million, accounted as consideration based on the loan forgiveness terms. Additional consideration for vacation rental units of $0.4 million, resulted in a total purchase price of $17.0 million. In addition, we entered into a lease agreement pursuant to which Blue Water will pay rent to us and continue to operate the park.

(6) The balance includes the marina acquired in February and the yacht sales business acquired in April of which $0.1 million was recorded in Investment property, $17.6 million in Goodwill and other intangible assets, and $0.4 million in Other assets / (liabilities), net.

(7) Includes acquired intangible assets subject to amortization of $70.2 million with a weighted average amortization period of 14.6 years, consisting of trademarks and trade names, customer relationships and other intangible assets.

(8) The purchase price allocation is preliminary as of December 31, 2022, subject to revision based on the final purchase price allocations to be finalized one year from the acquisition date.

As of December 31, 2022, we incurred $19.2 million of transaction costs, which were capitalized and allocated among the various fixed asset categories for purchases that meet the asset acquisition criteria. As of December 31, 2022, we also incurred $24.7 million of business combination expenses, which were expensed for acquisitions deemed to be business combinations.

Total revenues and Net income included in the Consolidated Statements of Operations for the year ended December 31, 2022 related to business combinations completed in 2022 are set forth in the following table (in millions):

	Year Ended
	December 31, 2022
Total revenues	$	353.6
Net income	$	13.8

The following unaudited pro forma financial information presents the results of our operations for the year ended December 31, 2022, as if the properties combined through business combinations in 2022 had been acquired on January 1, 2021. The unaudited pro forma results reflect certain adjustments for items that are not expected to have a continuing impact, such as adjustments for transaction costs incurred, management fees and acquisition accounting.

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisitions been consummated on January 1, 2021 (in millions, except for per share data):

	Year Ended (unaudited)
	December 31, 2022
Total revenues	$	3,091.3
Net income attributable to SUI common shareholders	$	241.2
Net income per share attributable to SUI common shareholders - basic	$	1.99
Net income per share attributable to SUI common shareholders - diluted	$	1.99

2022 Development and Expansion Activities

During the year ended December 31, 2022, we acquired six land parcels located in the U.S. and the UK for an aggregate purchase price of $26.2 million and two buildings and land parcels related to our marinas located in the U.S. for an aggregate purchase price of $13.9 million.

2022 Dispositions

During the three months ended September 30, 2022, we sold an RV community containing 514 sites located in California for $15.0 million. The disposition resulted in a loss on sale of $0.8 million, inclusive of selling costs.

During the three months ended March 31, 2022, we sold two MH communities and one community containing MH and RV sites, each located in Florida, with a total of 323 sites for $29.5 million. The gain from the sale of the properties was $13.3 million.

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Notes And Other Receivables

3 Months Ended

Mar. 31, 2023

Notes and Loans Payable, by Type, Current and Noncurrent [Abstract]

Notes And Other Receivables

4. Notes and Other Receivables

The following table sets forth certain information regarding notes and other receivables (in millions):

	March 31, 2023		December 31, 2022
Installment notes receivable on manufactured homes, net	$	62.2	$	65.9
Notes receivable from real estate developers and operators	435.0		305.2
Other receivables, net	219.5		246.2
Total Notes and Other Receivables, net	$	716.7	$	617.3

Installment Notes Receivable on Manufactured Homes

Installment notes receivable are measured at fair value, using indicative pricing models from third party valuation specialists, in accordance with ASC Topic 820, "Fair Value Measurements and Disclosures." The balances of installment notes receivable of $62.2 million (net of fair value adjustment of $3.1 million) and $65.9 million (net of fair value adjustment of $1.4 million) as of March 31, 2023 and December 31, 2022, respectively, are secured by manufactured homes. The notes represent financing to purchasers of manufactured homes located in our communities and require monthly principal and interest payments. The notes had a net weighted average interest rate (net of servicing costs) and maturity of 7.6% and 13.6 years as of March 31, 2023, and 7.6% and 13.8 years as of December 31, 2022, respectively. Refer to Note 15, "Fair Value of Financial Instruments," for additional detail.

Notes Receivable from Real Estate Developers and Operators

Notes receivable from real estate developers and operators are measured at fair value, using indicative pricing models from third party valuation specialists, in accordance with ASC Topic 820, "Fair Value Measurements and Disclosures." As of March 31, 2023 and December 31, 2022, the notes receivable balances include a fully drawn loan provided to a real estate operator to fund investing and financing activities totaling $341.1 million with a net weighted average interest rate and maturity of 11.6% and 0.2 years as of March 31, 2023, and totaling $217.6 million with a net weighted average interest rate and maturity of 15.3% and 0.1 years as of December 31, 2022. The additional acquisition and construction loans provided to real estate developers total $93.9 million with a net weighted average interest rate and maturity of 8.5% and 2.4 years as of March 31, 2023, and total $87.6 million with a net weighted average interest rate and maturity of 7.8% and 2.3 years as of December 31, 2022, respectively. As of March 31, 2023, the additional acquisition and construction loans provided to real estate developers have $41.3 million of undrawn funds.

There were no adjustments to the fair value of notes receivable from real estate developers and operators for the three months ended March 31, 2023 and 2022. Refer to Note 15, "Fair Value of Financial Instruments," for additional information.

Other Receivables, net

Other receivables, net were comprised of amounts due from the following categories (in millions):

	March 31, 2023		December 31, 2022
Insurance receivables	$	74.9	$	78.5
Marina customers for storage, service and lease payments, net(1)	46.4		40.0
Home sale proceeds	31.8		28.9
MH and annual RV residents for rent, utility charges, fees and other pass-through charges, net(2)	24.2		61.5
Other receivables(3)	42.2		37.3
Total Other Receivables, net	$	219.5	$	246.2

(1)Net of allowance of $2.4 million and $2.2 million as of March 31, 2023 and December 31, 2022, respectively.

(2)Net of allowance of $4.9 million and $5.9 million as of March 31, 2023 and December 31, 2022, respectively.

(3)Includes receivable from Rezplot Systems LLC, a nonconsolidated affiliate, in which we had 49.1% and 48.9% ownership interest as of March 31, 2023 and December 31, 2022, respectively. In June 2020, we made a convertible secured loan to Rezplot Systems LLC. The note allows for a principal amount of up to $10.0 million to be drawn down over a period of three years, bears an interest rate of 3.0% and is secured by all the assets of Rezplot Systems LLC. In January 2022, we made an additional loan to Rezplot Systems LLC that allows for a principal amount of up to $5.0 million to be drawn over a period of three years and bears an interest rate of 3.0%. The outstanding balances were $12.3 million and $12.7 million as of March 31, 2023 and December 31, 2022, respectively. Refer to Note 6, "Investments in Nonconsolidated Affiliates," for additional information on Rezplot Systems LLC.

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Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

5. Goodwill and Other Intangible Assets

Our intangible assets include goodwill, in-place leases, non-competition agreements, trademarks and trade names, customer relationships, franchise agreements and other intangible assets. These intangible assets are recorded in Goodwill and Other intangible assets, net on the Consolidated Balance Sheets.

Goodwill

The measurement periods for the valuation of assets acquired and liabilities assumed in a business combination end as soon as information on the facts and circumstances that existed as of the acquisition dates becomes available but do not exceed 12 months. Adjustments in purchase price allocations may require a change in the amounts allocated to goodwill during the periods in which the adjustments are determined. These purchase accounting adjustments are presented under Other in the table below. Changes in the carrying amount of goodwill during the three months ended March 31, 2023 by reportable segment were as follows (in millions):

	December 31, 2022		Currency Translation Adjustment		Other(1)		March 31, 2023
Segment
MH	$	467.4	$	12.2	$	62.0	$	541.6
RV	9.5		—		—		9.5
Marina	541.5		—		—		541.5
Total	$	1,018.4	$	12.2	$	62.0	$	1,092.6

(1) During the three months ended March 31, 2023, adjustments in purchase price allocations resulted in the recognition of additional goodwill of $62.0 million in the MH segment, related to the Park Leisure business combination.

Other Intangible Assets, net

The gross carrying amounts and accumulated amortization of our intangible assets were as follows (in millions):

		March 31, 2023				December 31, 2022
Other Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
In-place leases	2 months - 13 years	$	166.0	$	(139.0)	$	165.7	$	(135.4)
Non-competition agreements	5 years	10.5		(4.5)		10.5		(4.1)
Trademarks and trade names	3 - 15 years	81.0		(6.8)		81.2		(5.5)
Customer relationships	4 - 17 years	131.5		(27.8)		131.5		(24.7)
Franchise agreements and other intangible assets	1 - 27 years	48.3		(10.0)		48.3		(8.9)
Total finite-lived assets		$	437.3	$	(188.1)	$	437.2	$	(178.6)
Indefinite-lived assets - Trademarks and trade names	N/A	141.0		—		140.9		—
Indefinite-lived assets - Other	N/A	2.5		—		2.5		—
Total indefinite-lived assets		$	143.5	$	—	$	143.4	$	—
Total		$	580.8	$	(188.1)	$	580.6	$	(178.6)

Amortization expenses related to our Other intangible assets were as follows (in millions):

	Three Months Ended
Other Intangible Asset Amortization Expense	March 31, 2023		March 31, 2022
In-place leases	$	3.6	$	4.6
Non-competition agreements	0.5		0.5
Trademarks and trade names	1.5		0.2
Customer relationships	3.2		2.8
Franchise fees and other intangible assets	0.9		0.6
Total	$	9.7	$	8.7

We anticipate amortization expense for Other intangible assets to be as follows for the next five years (in millions):

	Remainder 2023		2024		2025		2026		2027
In-place leases	$	7.0	$	7.1	$	6.2	$	3.5	$	2.0
Non-competition agreements	1.6		2.1		2.1		0.1		—
Trademarks and trade names	4.6		5.2		5.2		5.2		5.2
Customer relationships	9.5		12.7		12.7		12.2		12.2
Franchise agreements and other intangible assets	3.0		3.3		3.1		2.9		2.6
Total	$	25.7	$	30.4	$	29.3	$	23.9	$	22.0

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Investment in Nonconsolidated Affiliates

3 Months Ended

Mar. 31, 2023

Equity Method Investments and Joint Ventures [Abstract]

Investment in Nonconsolidated Affiliates

6. Investments in Nonconsolidated Affiliates

Investments in joint ventures that are not consolidated, nor recorded at cost, are accounted for using the equity method of accounting as prescribed in ASC Topic 323, "Investments - Equity Method and Joint Ventures." Investments in nonconsolidated affiliates are recorded within Other assets, net on the Consolidated Balance Sheets. Equity income and loss are recorded in the Income / (loss) from nonconsolidated affiliates line item on the Consolidated Statements of Operations.

RezPlot Systems LLC ("Rezplot")

At March 31, 2023 and December 31, 2022, we had a 49.1% and 48.9% ownership interest, respectively, in RezPlot, a RV reservation software technology company, which interest we acquired in January 2019.

Sungenia Joint Venture ("Sungenia JV")

At March 31, 2023 and December 31, 2022, we had a 50.0% ownership interest in Sungenia JV, a joint venture formed between us and Ingenia Communities Group in November 2018, to establish and grow a manufactured housing community development program in Australia.

GTSC LLC ("GTSC")

At March 31, 2023 and December 31, 2022, we had a 40.0% ownership interest in GTSC, which engages in acquiring, holding and selling loans secured, directly or indirectly, by manufactured homes located in our communities.

SV Lift, LLC ("SV Lift")

At March 31, 2023 and December 31, 2022, we had a 50.0% ownership interest in SV Lift, which owns, operates and leases an aircraft.

The investment balance in each nonconsolidated affiliate was as follows (in millions):

Investment	March 31, 2023		December 31, 2022
Investment in RezPlot	$	—	$	—
Investment in Sungenia JV	45.1		44.5
Investment in GTSC	40.8		54.5
Investment in SV Lift	2.2		2.3
Total	$	88.1	$	101.3

The income / (loss) from each nonconsolidated affiliate is as follows (in millions):

	Three Months Ended
Income / (Loss) from Nonconsolidated Affiliates	March 31, 2023		March 31, 2022
RezPlot equity loss	$	(1.5)	$	(0.7)
Sungenia JV equity income	0.6		0.6
GTSC equity income	1.0		1.2
SV Lift equity loss	(0.3)		(0.2)
Total Income / (Loss) from Nonconsolidated Affiliates	$	(0.2)	$	0.9

The change in the GTSC investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	54.5	$	35.7
Contributions	2.2		37.4
Distributions	(12.4)		(22.5)
Equity earnings	1.0		5.9
Fair value adjustment	(4.5)		(2.0)
Ending Balance	$	40.8	$	54.5

The change in the Sungenia JV investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	44.5	$	36.2
Cumulative translation adjustment	—		(3.0)
Contributions	—		9.1
Equity earnings	0.6		2.2
Ending Balance	$	45.1	$	44.5

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Consolidated Variable Interest Entities

3 Months Ended

Mar. 31, 2023

Disclosure of Variable Interest Entities [Abstract]

Consolidated Variable Interest Entities

7. Consolidated Variable Interest Entities

The Operating Partnership

We consolidate the Operating Partnership under the guidance set forth in ASC 810, "Consolidation." We evaluated whether the Operating Partnership met the criteria for classification as a variable interest entity ("VIE") or, alternatively, as a voting interest entity and concluded that the Operating Partnership met the criteria of a VIE. Our significant asset is our investment in the Operating Partnership, and consequently, substantially all of our assets and liabilities represent those assets and liabilities of the Operating Partnership. We are the sole general partner and generally have the power to manage and have complete control over the Operating Partnership and the obligation to absorb its losses or the right to receive its benefits.

Other Consolidated VIEs

We consolidate Sun NG RV Resorts LLC ("Sun NG Resorts"), Sun NG Whitewater RV Resorts LLC, Sun NG Beaver Brook LLC, FPG Sun Menifee 80 LLC, Solar Energy Project LLC, Solar Energy Project CA II LLC, Solar Energy Project III LLC and FPG Sun Moreno Valley 66 LLC under the guidance set forth in ASC Topic 810, "Consolidation." We concluded that each entity is a VIE where we are the primary beneficiary, as we have the power to direct the significant activities of and absorb the significant losses and receive the significant benefits from each entity. Refer to Note 8, "Debt and Line of Credit," and Note 9, "Equity and Temporary Equity," for additional information on Sun NG Resorts.

The following table summarizes the assets and liabilities of our consolidated VIEs, with the exception of the Operating Partnership, included in our Consolidated Balance Sheets after eliminations (in millions):

	March 31, 2023		December 31, 2022
Assets
Investment property, net	$	782.3	$	739.7
Cash, cash equivalents and restricted cash	11.0		14.1
Other intangible assets, net	12.7		13.0
Other assets, net	5.7		10.5
Total Assets	$	811.7	$	777.3
Liabilities and Other Equity
Secured debt	$	22.0	$	22.2
Unsecured debt	35.2		35.2
Advanced reservation deposits and rent	34.1		13.8
Accrued expenses and accounts payable	20.6		11.8
Other liabilities	1.2		1.4
Total Liabilities	113.1		84.4
Temporary equity	39.0		41.3
Total Liabilities and Other Equity	$	152.1	$	125.7

Total assets related to the consolidated VIEs, with the exception of the Operating Partnership, comprised 4.7% and 4.5% of our consolidated total assets at March 31, 2023 and December 31, 2022, respectively. Total liabilities comprised 1.2% and 0.9% of our consolidated total liabilities at March 31, 2023 and December 31, 2022, respectively. Equity Interests and Noncontrolling interests related to the consolidated VIEs, on an absolute basis, comprised less than 1.0% of our consolidated total equity at March 31, 2023 and December 31, 2022, respectively.

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Debt and Line of Credit

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Debt and Line of Credit

8. Debt and Line of Credit

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in millions, except for statistical information):

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	March 31, 2023		December 31, 2022		March 31, 2023	December 31, 2022	March 31, 2023		December 31, 2022
Secured Debt(1)	$	3,386.4	$	3,217.8	9.8	10.2	3.811	%	3.723	%
Unsecured Debt
Senior unsecured notes(2)	2,175.6		1,779.6		8.2	8.1	3.375	%	2.9	%
Line of credit and other debt(3)	1,838.1		2,130.6		2.4	2.8	4.638	%	4.417	%
Preferred equity - Sun NG Resorts - mandatorily redeemable	35.2		35.2		1.5	1.8	6.0	%	6.0	%
Preferred OP units - mandatorily redeemable	26.7		34.0		0.8	3.1	6.5	%	5.921	%
Total Unsecured Debt	4,075.6		3,979.4
Total Debt	$	7,462.0	$	7,197.2	7.4	7.4	3.908	%	3.746	%

(1) Balances at March 31, 2023 and December 31, 2022 include $0.1 million of net debt premium, respectively, and $16.2 million and $14.6 million of deferred financing costs, respectively.

(2) Balances at March 31, 2023 and December 31, 2022 include $7.0 million and $6.1 million of net debt discount, respectively, and $17.4 million and $14.3 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

(3) Balance at March 31, 2023 and December 31, 2022 includes $2.7 million and $3.0 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

Secured Debt

Secured debt consists of mortgage term loans. During the three months ended March 31, 2023, no mortgage term loans were paid off. During the year ended December 31, 2022, we paid off the following mortgage term loans during the quarters presented below (in millions, except for statistical information):

Period	Repayment Amount			Fixed Interest Rate		Maturity Date	Loss on Extinguishment of Debt
Three months ended September 30, 2022	$	318.0	(1)	4.81	%	December 6, 2022 - September 6, 2024	$	4.0
Three months ended June 30, 2022	$	15.8		3.89	%	October 1, 2022	$	—

(1)Includes 17 mortgage term loans which were scheduled to mature from December 6, 2022 to September 6, 2024 that were secured by 35 properties.

During the three months ended March 31, 2023 and the year ended December 31, 2022, we entered into the following mortgage term loans during the quarters presented below (in millions, except for statistical information).

Period	Loan Amount			Term (in years)	Interest Rate		Maturity Date
Three months ended March 31, 2023	$	85.0	(1)	3	5.0	%	February 13, 2026
	$	99.1	(2)	7 - 10	5.72	%	April 1, 2030 - April 1, 2033
Three months ended December 31, 2022	$	226.0	(3)	4 - 7	4.5	%	June 15, 2026 - December 15, 2029
Three months ended September 30, 2022	$	20.6	(4)(6)	25	3.65	%	August 10, 2047
	$	3.4	(5)(6)	25	3.65	%	August 10, 2047

(1)Includes five existing encumbered properties.

(2)Includes 22 existing encumbered properties.

(3)Includes 18 existing encumbered properties.

(4)Represents a construction loan (undrawn as of March 31, 2023).

(5)Represents mortgage term loan.

(6)Represents loans jointly secured by one property.

The mortgage term loans, which total $3.4 billion as of March 31, 2023, are secured by 154 properties comprised of 61,624 sites representing approximately $2.7 billion of net book value.

Unsecured Debt

Senior Unsecured Notes

The following table sets forth certain information regarding our outstanding senior unsecured notes (in millions, except for statistical information). All senior unsecured notes include interest payments on a semi-annual basis in arrears, and are recorded in the Unsecured debt line item on the Consolidated Balance Sheets.

			Carrying Amount
	Principal Amount		March 31, 2023		December 31, 2022
5.7% notes, issued in January 2023 and due in January 2033(1)	$	400.0	$	395.4	N/A
4.2% notes, issued in April 2022 and due in April 2032	600.0		592.0		591.8
2.3% notes, issued in October 2021 and due in November 2028	450.0		446.3		446.2
2.7% notes, issued in June 2021 and October 2021, and due in July 2031	750.0		741.9		741.6
Total	$	2,200.0	$	2,175.6	$	1,779.6

(1) In January 2023, the Operating Partnership issued $400.0 million of senior unsecured notes with an interest rate of 5.7% and a 10-year term, due January 15, 2033 (the "2033 Notes"). Interest on the notes is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2023. The net proceeds from the offering were $395.3 million, after deducting underwriters' discounts and estimated offering expenses. We used the net proceeds from the offering to repay borrowings outstanding under our Senior Credit Facility.

Line of Credit

In April 2022, in connection with the closing of the Park Holidays acquisition, the Operating Partnership (as borrower), SUI (as guarantor) , and certain lenders entered into Amendment No. 1 to the Fourth Amended and Restated Credit Agreement and Other Loan Documents (the "Credit Facility Amendment"), which amended our senior credit facility (the "Senior Credit Facility").

The Credit Facility Amendment increased the aggregate amount of our Senior Credit Facility to $4.2 billion with the ability to upsize the total borrowings by an additional $800.0 million, subject to certain conditions. The increased aggregate amount under the Senior Credit Facility consists of the following: (a) a revolving loan in an amount up to $3.05 billion and (b) a term loan facility of $1.15 billion, with the ability to draw funds from the combined facilities in U.S. dollars, Pound sterling, Euros, Canadian dollars and Australian dollars, subject to certain limitations. The Credit Facility Amendment extended the maturity date of the revolving loan facility to April 7, 2026. At our option that maturity date may be extended two additional six-month periods. In addition, the Credit Facility Amendment established the maturity date of the term loan facility under the Credit Facility Amendment as April 7, 2025, which may not be further extended.

Prior to the Credit Facility Amendment, the Senior Credit Facility permitted aggregate borrowings of up to $2.0 billion, with an accordion feature that allowed for additional commitments of up to $1.0 billion, subject to the satisfaction of certain conditions. Prior to the amendment, $500.0 million of available borrowings under the Senior Credit Facility were scheduled to mature on October 11, 2024, with the remainder scheduled to mature on June 14, 2025. We had no loss on extinguishment of debt related to the Senior Credit Facility during the three months ended March 31, 2023.

The Senior Credit Facility bears interest at a floating rate based on the Adjusted Term Secured Overnight Financing Rate ("SOFR"), the Adjusted Eurocurrency Rate, the Daily Risk Free Rate ("RFR"), the Australian Bank Bill Swap Bid Rate ("BBSY"), the Daily Sterling Overnight Index Average ("SONIA") Rate or the Canadian Dollar Offered Rate, as applicable, plus a margin, in all cases, which can range from 0.725% to 1.6%, subject to certain adjustments. As of March 31, 2023, the margins based on our credit ratings were 0.85% on the revolving loan facility and 0.95% on the term loan facility. During the three months ended March 31, 2023 and year ended December 31, 2022, we achieved sustainability related requirements resulting in a favorable 0.04% and 0.01% adjustments, respectively, to both margins.

At the lenders' option, the Senior Credit Facility will become immediately due and payable upon an event of default under the Credit Facility Amendment. We had $741.6 million and $1.1 billion of borrowings outstanding under the revolving loan as of March 31, 2023 and December 31, 2022, respectively. We also had $1.1 billion of borrowings outstanding under the term loan on the Senior Credit Facility as of March 31, 2023 and December 31, 2022, respectively. These balances are recorded in Unsecured debt on the Consolidated Balance Sheets.

The Senior Credit Facility provides us with the ability to issue letters of credit. Our issuance of letters of credit does not increase our borrowings outstanding under the Senior Credit Facility, but does reduce the borrowing amount available. We had $4.8 million and $2.3 million of outstanding letters of credit at March 31, 2023 and December 31, 2022, respectively.

Bridge Loan Termination

In March 2022, we terminated our commitment letter with Citigroup Global Markets, Inc. ("Citigroup"), pursuant to which, Citigroup (on behalf of its affiliates), previously committed to lend us up to £950.0 million in Pound sterling, or approximately $1.2 billion converted at the March 31, 2022 exchange rate (the "Bridge Loan"). As of the date of termination, we did not have any borrowings outstanding under the Bridge Loan. During the year ended December 31, 2022, we recognized a Loss on extinguishment of debt in our Consolidated Statement of Operations of $0.3 million related to the termination of the Bridge Loan.

Unsecured Term Loan

In October 2019, we assumed a $58.0 million secured term loan facility related to an acquisition. The term loan initially had a four-year term ending October 29, 2023, and bore interest at a floating rate based on the Eurodollar rate or Prime rate plus a margin ranging from 1.2% to 2.05%. Effective July 1, 2021, the agreement was amended to release the associated collateral. The amendment extended the term loan facility maturity date to October 29, 2025 and adjusted the interest rate margin to a range from 0.8% to 1.6%. In August 2022, we amended the secured term loan facility to transition from the Eurodollar rate to SOFR. As of March 31, 2023, the margin based on our credit rating was 0.95%. The outstanding balance was $16.2 million at March 31, 2023 and $19.8 million at December 31, 2022, respectively. In accordance with the amended agreement, we achieved sustainability related requirements resulting in a favorable 0.01% adjustment to the margins. These balances are recorded in Unsecured debt on the Consolidated Balance Sheets.

Preferred Equity - Sun NG Resorts - Mandatorily Redeemable

In connection with the investment in Sun NG Resorts in June 2018, $35.3 million of mandatorily redeemable Preferred Equity ("Preferred Equity - Sun NG Resorts") was purchased by unrelated third parties. The Preferred Equity - Sun NG Resorts carries a preferred rate of return of 6.0% per annum. The Preferred Equity - Sun NG Resorts has a seven-year term ending June 1, 2025 and can be redeemed in the fourth quarter of 2024 at the holders' option. The Preferred Equity - Sun NG Resorts as of March 31, 2023 was $35.2 million. This balance is recorded within the Unsecured debt line item on the Consolidated Balance Sheets. Refer to Note 7, "Consolidated Variable Interest Entities," and Note 9, "Equity and Temporary Equity," for additional information.

Preferred OP Units - Mandatorily Redeemable

Preferred OP units at March 31, 2023 and December 31, 2022 include $26.7 million and $34.0 million of Aspen preferred OP units issued by the Operating Partnership, respectively. As of March 31, 2023, these units are convertible indirectly into 320,699 shares of our common stock.

In January 2020, we amended the Operating Partnership's partnership agreement. The amendment extended the automatic redemption date and reduced the annual distribution rate for 270,000 of the Aspen preferred OP units (the "Extended Units"). Subject to certain limitations, at any time prior to January 1, 2024 (or prior to January 1, 2034 with respect to the Extended Units), the holder of each Aspen preferred OP unit at its option may convert such Aspen preferred OP unit into: (a) if the average closing price of our common stock for the preceding ten trading days is $68.00 per share or less, 0.397 common OP units; or (b) if the 10-day average closing price is greater than $68.00 per share, the number of common OP units is determined by dividing (i) the sum of (A) $27.00 plus (B) 25.0% of the amount by which the 10-day average closing price exceeds $68.00 per share, by (ii) the 10-day average closing price. The current preferred distribution rate is 3.8% on the Extended Units and 6.5% on all other Aspen preferred OP units. On January 2, 2024 (or January 2, 2034 with respect to the Extended Units), we are required to redeem for cash all Aspen preferred OP units that have not been converted to common OP units. All of the Extended Units converted during the three months ended March 31, 2023. As of March 31, 2023, 988,819 of other Aspen preferred units were outstanding. These balances are recorded within the Unsecured debt line item on the Consolidated Balance Sheets.

Covenants

The mortgage term loans, senior unsecured notes and Senior Credit Facility are subject to various financial and other covenants. The most restrictive covenants are pursuant to (a) the terms of the Senior Credit Facility, which contains a minimum fixed charge coverage ratio, maximum leverage ratio, distribution ratio and variable rate indebtedness, and (b) the terms of the senior unsecured notes, which contain a total debt to total assets ratio, secured debt to total assets ratio, consolidated income available for debt service to debt service ratio and unencumbered total asset value to unsecured debt covenants ratio. At March 31, 2023, we were in compliance with all covenants.

In addition, certain of our subsidiary borrowers own properties that secure loans. These subsidiaries are consolidated within our accompanying Consolidated Financial Statements, however, each of these subsidiaries' assets and credit are not available to satisfy our debts and other obligations, and any of our other subsidiaries or any other person or entity.

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Equity and Temporary Equity

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Equity and Temporary Equity

9. Equity and Temporary Equity

Temporary Equity

Redeemable Preferred OP Units

Temporary equity includes preferred securities that are redeemable for cash at the holder's option or upon the occurrence of an event that is not solely within our control based on a fixed or determinable price. These securities are not mandatorily redeemable for cash nor do they contain a fixed maturity date. The following table sets forth the various series of redeemable preferred OP units that were outstanding as of March 31, 2023 and December 31, 2022 and the related terms, and summarizes the balance included within Temporary Equity on our Consolidated Balance Sheets (in millions, except for statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption(3)	Redemption Period	March 31, 2023		December 31, 2022
Series D preferred OP units	488,958	0.8000	4.0	%	Holder's Option	Any time after earlier of January 31, 2024 or death of holder	$	47.7	$	48.1
Series F preferred OP units	90,000	0.6250	3.0	%	Holder's Option	Any time after earlier of May 14, 2025 or death of holder	8.7		8.7
Series G preferred OP units	239,710	0.6452	3.2	%	Holder's Option	Any time after earlier of September 30, 2025 or death of holder	24.0		24.4
Series H preferred OP units	581,342	0.6098	3.0	%	Holder's Option	Any time after earlier of October 30, 2025 or death of holder	56.3		56.7
Series J preferred OP units	239,000	0.6061	2.85	%	Holder's Option	During the 30-day period following a change of control of the Company or any time after April 21, 2026	23.3		23.6
Series K preferred OP units	1,000,000	0.5882	4.0	%	Holder's Option	Within 60 days after March 23, 2028	99.9		—
Total	2,639,010						$	259.9	$	161.5

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

(3) The redemption price for each preferred OP unit redeemed will be equal to its issue price plus all accrued but unpaid distributions.

Series K Preferred OP Units - On March 23, 2023, we issued 1,000,000 Series K preferred OP units in connection with the acquisition of the Savannah Yacht Center. The Series K preferred OP units have a stated issuance price of $100.00 per OP unit and carry a preferred return of 4.0%. Subject to certain limitations, at any time after its issuance date, each Series K preferred OP unit will be exchangeable into that number of our common OP units equal to the quotient (the "Series K Exchange Rate") obtained by dividing $100.00 by $170.00, (the "Series K Conversion Price"), (as such ratio is subject to adjustment for certain capital events). Each Common OP unit is exchangeable for one share of our common stock. Subject to certain limitations, the holders of Series K Preferred Units will have the right to cause SCOLP to redeem all or a portion of their Series K Preferred Units for $100.00 per unit (plus any accrued but unpaid distributions) within 60 days after the fifth anniversary of the issuance date of the Series K preferred OP units. SCOLP will have the right to cause the holders of Series K preferred OP units to exchange the Series K preferred OP units into Common OP units at the Series K Exchange Rate (i) within 60 days after the fifth anniversary of the issuance date of the Series K Preferred Units or (ii) if at any time the trading price of the Company's common stock for each of the preceding 60 trading days is equal to or greater than 120% of the Series K Conversion Price. As of March 31, 2023, 1,000,000 Series K preferred OP units were outstanding. Refer to Note 3, "Real Estate Acquisitions and Dispositions," for additional information.

Redeemable Equity Interests

The following table summarizes the redeemable equity interests included in Temporary Equity on our Consolidated Balance Sheets (in millions):

Equity Interest	Description	March 31, 2023		December 31, 2022
FPG Sun Moreno Valley 66 LLC	In connection with the investment in land for future development in the city of Moreno Valley, California, at the property known as FPG Sun Moreno Valley 66 LLC	$	0.1	$	0.1
Solar Energy Project CA II LLC	A joint venture that operates and maintains solar energy equipment in select California communities	4.3		4.2
Solar Energy Project LLC	A joint venture that operates and maintains solar energy equipment in select California communities	2.0		1.9
Solar Energy Project III LLC	A joint venture that operates and maintains solar energy equipment in select Arizona and California communities	1.9		0.3
FPG Sun Menifee 80 LLC	In connection with the investment in land for future development in the city of Menifee in California, at the property known as FPG Sun Menifee 80 LLC	0.1		0.1
NG Sun Whitewater LLC	In connection with the investment in land at the property known as Whitewater	2.5		3.2
NG Sun LLC	In connection with the investment in Sun NG Resorts, a joint venture that operates a portfolio of RV communities in the U.S.	27.7		31.1
NG Sun Beaver Brook LLC	In connection with the investment in Sun NG Beaver Brook LLC, a joint venture that operates one RV communities in the U.S.	0.4		0.5
Total		$	39.0	$	41.4

Equity Interest - NG Sun LLC - In June 2018, in connection with the investment in Sun NG Resorts, unrelated third parties purchased $6.5 million of Series B preferred equity interests and $15.4 million of common equity interests in Sun NG Resorts (herein jointly referred to as "Equity Interest - NG Sun LLC"). In April and September 2020, in connection with certain acquisitions, $3.0 million of Series B preferred equity interests were converted to common equity interests. The Series B preferred equity interests carry a preferred return at a rate that, at any time, is equal to the interest rate on Sun NG Resorts' indebtedness at such time. The current rate of return is 5.0%. The Equity Interest - NG Sun LLC does not have a fixed maturity date and can be redeemed in the fourth quarters of 2024, 2025 or 2026 at the holders' option. Sun NG LLC, our subsidiary, has the right during certain periods each year, with or without cause, or for cause at any time, to elect to buy NG Sun LLC's interest. During a limited period in 2024, NG Sun LLC has the right to put its interest to Sun NG LLC. If either party exercises its option, the property management agreement will be terminated, and we are required to purchase the remaining interests of NG Sun LLC and the property management agreement at fair value. In December 2021, the operating agreement was amended and we paid Sun NG Resorts a contingent consideration earnout in the amount of $38.3 million. The contingent consideration payment was recognized as an additional purchase price payment within Land improvements and buildings in the Consolidated Balance Sheets, and within Acquisition of properties, net of cash acquired in the Consolidated Statement of Cash Flows. The Equity Interest - NG Sun LLC balance was $27.7 million and $31.1 million as of March 31, 2023 and December 31, 2022, respectively. Refer to Note 7, "Consolidated Variable Interest Entities," and Note 8, "Debt and Line of Credit," for additional information.

Permanent Equity

Universal Shelf Registration Statement

In April 2021, we filed a new universal shelf registration statement on Form S-3 with the SEC. The shelf registration statement was deemed automatically effective and provides for the registration of unspecified amounts of equity and debt securities. We have the authority to issue 200,000,000 shares of capital stock, of which 180,000,000 shares are common stock and 20,000,000 are shares of preferred stock, par value $0.01 per share. As of March 31, 2023, we had 124,421,717 shares of common stock issued and outstanding and no shares of preferred stock were issued and outstanding.

Public Equity Offerings

In November 2021, we entered into two forward sale agreements relating to an underwritten registered public offering of 4,025,000 shares of our common stock at a public offering price of $185.00 per share and completed the offering on November 18, 2021 (the "November 2021 Forward Sale Agreements"). We did not initially receive any proceeds from the sale of shares of our common stock by the forward purchaser or its affiliates. In April 2022, we completed the physical settlement of the 4,025,000 shares of common stock and received aggregate net proceeds of $705.4 million. We used the net proceeds to repay borrowings outstanding under our Senior Credit Facility, and for working capital and general corporate purposes.

At the Market Offering Sales Agreement

In December 2021, we entered into an At the Market Offering Sales Agreement with certain sales agents and forward sellers pursuant to which we may sell, from time to time, up to an aggregate gross sales price of $1.25 billion of our common stock (the "Sales Agreement"), through the sales agents, acting as our sales agents or, if applicable, as forward sellers, or directly to the sales agents as principals for their own accounts. The sales agents and forward sellers are entitled to compensation in an agreed amount not to exceed 2.0% of the gross price per share for any shares sold under the Sales Agreement. We simultaneously terminated our prior sales agreement upon entering into the Sales Agreement. Through March 2023, we had entered into forward sales agreements under our Sales Agreement for an aggregate gross sales price of $160.6 million.

During the three months ended September 30, 2022, we entered into forward sale agreements with respect to 15,000 shares of common stock under our Sales Agreement for $2.6 million. Additionally, we settled all of our outstanding forward sale agreements with respect to 1,526,212 shares of common stock which includes 620,109; 600,503; 290,600; and 15,000 shares of common stock from the three months ended December 31, 2021, March 31, June 30 and September 30, 2022 forward sale agreements, respectively. The net proceeds of $275.5 million from the settlement of these forward sale agreements were used to repay borrowings outstanding under our Senior Credit Facility.

During the three months ended June 30, 2022, we completed the physical settlement of 1,200,000 shares of common stock under our prior at the market offering program and received net proceeds of $229.5 million. Additionally, we entered into forward sales agreements with respect 290,600 shares of common stock for $50.1 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the three months ended March 31, 2022, we entered into forward sales agreements with respect to 600,503 shares of common stock for $107.9 million, under our Sales Agreement. These forward sale agreements were settled during the three months ended September 30, 2022.

During the year ended December 31, 2021, we entered into forward sale agreements with respect to 1,820,109 shares of common stock under our prior at the market offering program for $356.5 million. We completed the physical settlement of 1,200,000 and 620,109 shares of common stock during the three months ended June 30, 2022 and September 30, 2022, respectively.

Issuances of Common Stock and OP Units in Connection with the Acquisition of Certain Properties

Issuances of Common Stock

In April 2022, we issued 186,044 shares of common stock with a value of $33.9 million in connection with the acquisition of Park Holidays.

Issuances of Common OP Units

Three Months Ended March 31, 2023 and 2022	Common OP Units Issued	Value at Issuance (in millions)		Related Acquisition
January 2023	31,289	$	4.5	Fox Run
February 2022	14,683	$	2.8	Jarrett Bay Boatworks

Noncontrolling Interests - Common and Preferred OP Units

The following table summarizes the common and preferred OP units included within Noncontrolling interests on our Consolidated Balance Sheets (in millions, except for shares and statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption	Redemption Period	March 31, 2023		December 31, 2022
Common OP units	2,447,083	1.0000	Same distribution rate for common stock		N/A	N/A	$	33.6	$	31.5
Series A-1 preferred OP units	207,548	2.4390	6.0	%	N/A	N/A	13.6		14.0
Series A-3 preferred OP units	40,268	1.8605	4.5	%	N/A	N/A	2.7		2.7
Series C preferred OP units	305,948	1.1100	5.0	%	N/A	N/A	23.1		23.6
Series E preferred OP units	80,000	0.6897	5.5	%	N/A	N/A	6.8		6.9
Total	3,080,847						$	79.8	$	78.7

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

Conversions

Conversions to Common Stock - Subject to certain limitations, holders can convert certain series of OP units to shares of our common stock at any time. Below is the activity of conversions during the three months ended March 31, 2023 and 2022:

		Three Months Ended
		March 31, 2023		March 31, 2022
Series	Conversion Rate	Units / Shares Converted	Common Stock(1)	Units / Shares Converted	Common Stock(1)
Aspen preferred OP units	Various(2)	270,000	86,224	—	—
Common OP units	1.0000	2,910	2,910	1,260	1,260
Series A-1 preferred OP units	2.4390	—	—	2,694	6,568
Series C preferred OP units	1.1100	65	72	150	166
Series E preferred OP units	0.6897	—	—	5,000	3,448
Series G preferred OP units	0.6452	1,000	645	—	—
Series H preferred OP units	0.6098	25	15	—	—
Series J preferred OP units	0.6061	1,000	606	—	—

(1)Calculation may yield minor differences due to rounding incorporated in the above numbers.

(2)Refer to Note 8, "Debt and Line of Credit," for additional detail on Aspen preferred OP unit conversions.

Distributions

Distributions declared for the three months ended March 31, 2023 were as follows:

Common Stock, Common OP units and Restricted Stock Distributions	Record Date	Payment Date	Distribution Per Share		Total Distribution (in Millions)
March 31, 2023	3/31/2023	4/17/2023	$	0.93	$	118.0

Noncontrolling Interest Disclosure

Three Months Ended March 31, 2023 and 2022	Common OP Units Issued	Value at Issuance (in millions)		Related Acquisition
January 2023	31,289	$	4.5	Fox Run
February 2022	14,683	$	2.8	Jarrett Bay Boatworks

Noncontrolling Interests - Common and Preferred OP Units

The following table summarizes the common and preferred OP units included within Noncontrolling interests on our Consolidated Balance Sheets (in millions, except for shares and statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption	Redemption Period	March 31, 2023		December 31, 2022
Common OP units	2,447,083	1.0000	Same distribution rate for common stock		N/A	N/A	$	33.6	$	31.5
Series A-1 preferred OP units	207,548	2.4390	6.0	%	N/A	N/A	13.6		14.0
Series A-3 preferred OP units	40,268	1.8605	4.5	%	N/A	N/A	2.7		2.7
Series C preferred OP units	305,948	1.1100	5.0	%	N/A	N/A	23.1		23.6
Series E preferred OP units	80,000	0.6897	5.5	%	N/A	N/A	6.8		6.9
Total	3,080,847						$	79.8	$	78.7

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

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Share-Based Compensation

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Share-Based Compensation

10. Share-Based Compensation

As of March 31, 2023, we had two share-based compensation plans: the Sun Communities, Inc. 2015 Equity Incentive Plan (as amended, the "2015 Equity Incentive Plan") and the First Amended and Restated 2004 Non-Employee Director Option Plan (as amended, the "2004 Non-Employee Director Option Plan"). We believe granting equity awards will provide certain executives, key employees and directors additional incentives to promote our financial success and promote employee and director retention by providing an opportunity to acquire or increase the direct proprietary interest of those individuals in our operations and future. Time based awards for directors generally vest over three years. Time based awards for key employees and executives generally vest over five years. Market condition awards for executives generally vest after three years.

During the three months ended March 31, 2023 and 2022, shares were granted as follows:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type
2023	Key Employees	2015 Equity Incentive Plan	220,258	$	137.16	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	62,800	$	144.88	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	82,200	$	108.60	(2)	Market Condition	(3)
2023	Directors	2004 Non-Employee Director Option Plan	16,000	$	148.12	(1)	Time Based
2022	Key Employees	2015 Equity Incentive Plan	138,510	$	180.49	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	66,000	$	178.20	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	91,500	$	124.88	(2)	Market Condition	(3)
2022	Directors	2004 Non-Employee Director Option Plan	11,900	$	197.00	(1)	Time Based

(1)Represents the weighted average fair value per share of the closing price of our common stock on the dates the shares were awarded.

(2)Represents the weighted average fair value per share of the Monte Carlo simulation fair value price of our market condition awards on the dates the shares were awarded.

(3)Share-based compensation for restricted stock awards with market conditions is measured based on shares expected to vest using a Monte Carlo simulation to determine fair value.

The vesting requirements for 203,898 and 230,411 restricted shares granted to our executives, directors and employees were satisfied during the three months ended March 31, 2023 and 2022, respectively.

We capitalize a portion of share-based compensation costs for employees who work directly on construction and development of our communities. We recognized the following share-based compensation costs during the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023		March 31, 2022
Share-based compensation - expensed(1)	$	9.6	$	9.7
Share-based compensation - capitalized(2)	$	0.7	$	—

(1) Recorded within General and Administrative Expense on the Consolidated Income Statements.

(2) Capitalized to Land Improvements and Buildings on the Consolidated Balance Sheets.

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Segment Reporting

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Segment Reporting

11. Segment Reporting

ASC Topic 280, "Segment Reporting," establishes standards for the way that business enterprises report information about operating segments in its financial statements. As described in Note 1, "Basis of Presentation," we analyze our operating results through the following segments: (i) Manufactured home ("MH") communities, (ii) Recreational vehicle ("RV") communities and (iii) Marina. Hybrid properties are classified to a segment based on the predominant site counts at the properties. We evaluate segment operating performance based on NOI.

The MH segment owns, operates, develops, or has an interest in, a portfolio of MH communities in the U.S. and the UK, and is in the business of acquiring, operating and developing ground-up MH communities to provide affordable housing solutions to residents. The MH segment in the U.S. also provides manufactured home sales and leasing services to tenants and prospective tenants of our communities. The MH segment in the UK provides holiday home sales and associated site license activities to holiday homeowners in our communities.

The RV segment owns, operates, develops, or has an interest in, a portfolio of RV communities and is in the business of acquiring, operating and developing ground-up RV communities in the U.S. and Canada. It also provides leasing services for vacation rentals within the RV communities.

The Marina segment owns, operates and develops marinas, and is in the business of acquiring and operating marinas in the U.S., with the majority of such marinas concentrated in coastal regions, and others located in various inland regions.

A presentation of segment financial information is summarized as follows (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Operating revenues	$	338.2	$	111.8	$	180.3	$	630.3	$	269.1	$	116.7	$	147.9	$	533.7
Operating expenses / Cost of sales	162.0		66.6		121.3		349.9		107.4		67.1		97.3		271.8
NOI	$	176.2	$	45.2	$	59.0	$	280.4	$	161.7	$	49.6	$	50.6	$	261.9
Adjustments to arrive at net income
Interest income							11.4								6.8
Brokerage commissions and other revenues, net							9.5								8.0
General and administrative expense							(63.9)								(55.7)
Catastrophic event-related charges, net							(1.0)								—
Business combination expense, net							(2.8)								(0.5)
Depreciation and amortization							(158.0)								(148.5)
Loss on extinguishment of debt (see Note 8)							—								(0.3)
Interest expense							(76.6)								(45.2)
Interest on mandatorily redeemable preferred OP units / equity							(1.0)								(1.0)
Loss on remeasurement of marketable securities							(19.9)								(34.5)
Loss on foreign currency exchanges							(2.7)								(2.2)
Gain / (loss) on dispositions of properties							(1.6)								13.4
Other expense, net							(1.0)								(0.6)
Gain / (loss) on remeasurement of notes receivable							(1.7)								0.2
Income / (loss) from nonconsolidated affiliates (see Note 6)							(0.2)								0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates							(4.5)								0.1
Current tax expense							(3.9)								(1.3)
Deferred tax benefit							4.6								—
Net Income / (Loss)							(32.9)								1.5
Less: Preferred return to preferred OP units / equity interests							2.4								3.0
Less: Loss attributable to noncontrolling interests							(5.2)								(2.2)
Net Income / (Loss) Attributable to SUI Common Shareholders							$	(30.1)							$	0.7

	March 31, 2023								December 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Identifiable Assets
Investment property, net	$	6,871.5	$	3,808.2	$	3,171.1	$	13,850.8	$	7,181.7	$	3,744.3	$	3,045.0	$	13,971.0
Cash, cash equivalents and restricted cash	38.1		22.2		14.5		74.8		49.4		30.3		10.7		90.4
Marketable securities	68.3		37.2		—		105.5		82.4		44.9		—		127.3
Inventory of manufactured homes	209.4		23.1		—		232.5		189.1		13.6		—		202.7
Notes and other receivables, net	559.4		102.7		54.6		716.7		475.2		96.5		45.6		617.3
Goodwill	541.6		9.5		541.5		1,092.6		467.4		9.5		541.5		1,018.4
Other intangible assets, net	95.1		31.2		266.4		392.7		97.9		32.6		271.5		402.0
Other assets, net	603.2		51.3		243.7		898.2		356.1		63.0		236.0		655.1
Total Assets	$	8,986.6	$	4,085.4	$	4,291.8	$	17,363.8	$	8,899.2	$	4,034.7	$	4,150.3	$	17,084.2

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Income Taxes

3 Months Ended

Mar. 31, 2023

Income Tax Disclosure [Abstract]

Income Taxes

12. Income Taxes

We have elected to be taxed as a real estate investment trust ("REIT") pursuant to Section 856(c) of the Internal Revenue Code of 1986, as amended ("Code"). In order for us to qualify as a REIT, at least 95% of our gross income in any year must be derived from qualifying sources. In addition, a REIT must distribute annually at least 90% of its REIT taxable income (calculated without any deduction for dividends paid and excluding capital gain) to its shareholders and meet other tests.

Qualification as a REIT involves the satisfaction of numerous requirements (on an annual and quarterly basis) established under highly technical and complex Code provisions for which there are limited judicial or administrative interpretations and involves the determination of various factual matters and circumstances not entirely within our control. In addition, frequent changes occur in the area of REIT taxation, which requires us to continually monitor our tax status. We analyzed the various REIT tests and confirmed that we continued to qualify as a REIT for the three months ended March 31, 2023.

As a REIT, we generally will not be subject to U.S. federal income taxes at the corporate level on the ordinary taxable income we distribute to our shareholders as dividends. If we fail to qualify as a REIT in any taxable year, our taxable income could be subject to U.S. federal income tax at regular corporate rates. Even if we qualify as a REIT, we may be subject to certain state and local income taxes, as well as U.S. federal income and excise taxes on our undistributed income. In addition, taxable income from non-REIT activities managed through taxable REIT subsidiaries is subject to federal, state and local income taxes. We are also subject to local income taxes in Canada, Puerto Rico and the UK due to certain properties located in those jurisdictions. We do not provide for withholding taxes on our undistributed earnings from our Canadian subsidiaries as they are reinvested and will continue to be reinvested indefinitely outside of the U.S. However, we are subject to Australian withholding taxes on distributions from our investment in Ingenia Communities Group. As currently structured, we are not subject to UK withholding taxes on distributions from our UK properties.

Deferred tax assets and liabilities reflect the impact of temporary differences between the amounts of assets and liabilities for financial reporting purposes and the basis of such assets and liabilities as measured by tax laws. Deferred tax assets are reduced, if necessary, by a valuation allowance to the amount where realization is more likely than not assured after considering all available evidence. Our temporary differences primarily relate to net operating loss carryforwards, depreciation and basis differences between tax and GAAP. Our deferred tax assets that have a full valuation allowance relate to our taxable REIT subsidiaries. As of March 31, 2023, we had $230.4 million of net deferred tax liabilities, comprised of deferred tax assets, net of valuation allowance of $37.6 million, and deferred tax liabilities of $268.0 million. Additionally, we have $59.0 million of deferred tax liabilities that have been reclassified as real estate held for sale. Refer to Note 3, "Real Estate Acquisitions and Dispositions," for additional information. The deferred tax liability balance is comprised primarily of basis differences in our foreign investment in properties in the UK and Canada. As of December 31, 2022, we had $308.6 million of net deferred tax liabilities, comprised of deferred tax assets, net of valuation allowance of $49.8 million, and deferred tax liabilities of $340.8 million. The net deferred tax assets and deferred tax liabilities are recorded within Other assets and Other liabilities, respectively, on our Consolidated Balance Sheets as of March 31, 2023 and December 31, 2022.

We had no unrecognized tax benefits as of March 31, 2023 and 2022. We do not expect significant changes in tax positions that would result in unrecognized tax benefits within one year of March 31, 2023.

For the three months ended March 31, 2023 and 2022, we recorded current tax expense for federal, state, Canadian, Puerto Rican, and UK income taxes and Australian withholding taxes totaling $3.9 million and $1.3 million, respectively.

For the three months ended March 31, 2023, we recorded a deferred tax benefit of $4.6 million.

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Earnings Per Share

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Earnings Per Share

13. Earnings Per Share

Earnings per share ("EPS") is computed by dividing net income by the weighted average number of common shares outstanding during the period on a basic and diluted basis. We calculate diluted EPS using the more dilutive of the treasury stock method and the two-class method for stock option and restricted common shares, the treasury stock method for forward equity sales and the if converted method for convertible units.

From time to time, we enter into forward equity sales agreements, which are discussed in Note 9, "Equity and Temporary Equity." We considered the potential dilution resulting from the forward equity sales agreements on the EPS calculations. At inception, the agreements do not have an effect on the computation of basic EPS as no shares are delivered unless there is a physical settlement. Common shares issued upon the physical settlement of the forward equity sales agreements, weighted for the period these common shares are outstanding, are included in the denominator of basic EPS. To determine the dilution resulting from the forward equity sales agreements during the period of time prior to settlement, we calculate the number of weighted-average shares outstanding - diluted in accordance with the treasury stock method.

Our potentially dilutive securities include our potential common shares related to our forward equity offerings, our unvested restricted common shares, and our Operating Partnership outstanding common OP units, Series A-1 preferred OP units, Series A-3 preferred OP units, Series C preferred OP units, Series D preferred OP units, Series E preferred OP units, Series F preferred OP units, Series G preferred OP units, Series H preferred OP units, Series J preferred OP units, Series K preferred OP units and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Diluted EPS considers the impact of potentially dilutive securities except when the potential common shares have an anti-dilutive effect. Our unvested restricted stock common shares contain rights to receive non-forfeitable distributions and participate equally with common stock with respect to distributions issued or declared, and thus, are participating securities, requiring the two-class method of computing EPS. In calculating the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the weighted average number of shares outstanding during the period. The two-class method determines EPS by (1) dividing the sum of distributed earnings allocated to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of shares of common stock outstanding for the period; and (2) dividing the sum of distributed earnings allocated to participating securities and undistributed earnings allocated to participating securities by the weighted average number of shares of participating securities for the period. The remaining potential dilutive common shares do not contain rights to distributions and are included in the computation of diluted EPS.

Computations of basic and diluted EPS were as follows (in millions, except for per share data):

	Three Months Ended
	March 31, 2023		March 31, 2022
Numerator
Net income / (loss) attributable to SUI common shareholders	$	(30.1)	$	0.7
Less: allocation to restricted stock awards	(0.1)		—
Basic earnings - net income / (loss) attributable to common shareholders after allocation to restricted stock awards	$	(30.0)	$	0.7
Add: allocation to restricted stock awards	(0.1)		—
Add: allocation to common and preferred OP units dilutive effect	(0.6)		—
Diluted earnings - net income / (loss) attributable to common shareholders after allocation to common and preferred OP units	$	(30.7)	$	0.7

Denominator
Weighted average common shares outstanding	123.3		115.3
Add: common shares dilutive effect: Forward Equity Offering	—		0.2
Add: dilutive restricted stock	0.4		0.4
Add: common and preferred OP units dilutive effect	2.5		—
Diluted weighted average common shares and securities	126.2		115.9
EPS Available to Common Shareholders After Allocation
Basic earnings / (loss) per share	$	(0.24)	$	0.01
Diluted earnings / (loss) per share	$	(0.24)	$	0.01

We have excluded certain convertible securities from the computation of diluted EPS because the inclusion of those securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted EPS as of March 31, 2023 and 2022 (in thousands):

	As of
	March 31, 2023	March 31, 2022
Common OP units	—	2,551
A-1 preferred OP units	208	272
A-3 preferred OP units	40	40
Aspen preferred OP units	989	1,284
Series C preferred OP units	306	306
Series D preferred OP units	489	489
Series E preferred OP units	80	85
Series F preferred OP units	90	90
Series G preferred OP units	240	241
Series H preferred OP units	581	581
Series I preferred OP units(1)	N/A	922
Series J preferred OP units	239	240
Series K preferred OP units	1,000	N/A
Total Securities	4,262	7,101

(1) All of our outstanding Series I preferred OP units converted during the year ended December 31, 2022.

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Derivative Financial Instruments

3 Months Ended

Mar. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

14. Derivative Financial Instruments

Our objective and strategy in using interest rate derivatives is to manage exposure to interest rate movements, thereby minimizing the effect of interest rate changes and the effect they could have on future cash outflows (forecasted interest payments) on a forecasted issuance of long-term debt or on outstanding floating rate debt. We typically enter into treasury locks and interest rate swaps to accomplish this objective. We do not enter into derivative instruments for speculative purposes. We recognize derivative instruments at fair value on a recurring basis on the Consolidated Balance Sheets and classify the derivatives within Level 2 of the fair value hierarchy. We adjust our Consolidated Balance Sheets on a quarterly basis to reflect the current fair market value of the derivative instruments.

As of March 31, 2023, we held four interest rate swap contracts, which have each been designated as a cash flow hedge under ASC Topic 815, "Derivatives and Hedging." The risk being hedged is the interest rate risk related to forecasted debt issuance transactions and the benchmark interest rate used is the SOFR. Additionally, the interest rate risk related to outstanding floating rate debt is being hedged and the benchmark interest rate used is the SONIA Rate. The unrealized gains or losses on the derivative instruments are recorded in Accumulated other comprehensive income / (loss) and are reclassified to Interest expense on the Consolidated Statements of Operations during the same period in which the hedged transaction affects earnings. We estimate that $13.4 million will be reclassified as a reduction to Interest expense over the next 12 months for all of our outstanding cash flow hedges. Cash flow from these derivative instruments is classified in the same category as the cash flow items being hedged on the Consolidated Statements of Cash Flows.

During the three months ended March 31, 2023, we entered into one interest rate swap contract to hedge variable rate borrowings of £100.0 million (equivalent to $123.7 million on March 31, 2023). The interest rate swap locks in a total fixed rate, inclusive of spread, of 4.808% through the maturity date of April 7, 2025. We also entered into one forward starting interest rate swap contract with an aggregate notional value of $50.0 million to hedge interest rate risk associated with a potential future debt offering.

During the three months ended March 31, 2023, in connection with the 2033 Notes issuance, we settled two $100.0 million 10-year treasury rate lock contracts and one $50.0 million forward swap totaling $250.0 million and received a net settlement payment of $7.4 million. This lowered the effective interest rate on the 2033 Notes from 5.7% to 5.5%. As of the settlement date, the net accumulated gain included in AOCI is being reclassified into earnings as a reduction to interest expense on a straight-line basis over the 10-year term of the hedged transaction.

The following table presents the gross fair value amounts of our derivative financial instruments and the associated notional amounts (in millions):

	March 31, 2023						December 31, 2022
Derivatives designated as cash flow hedges	Notional		Fair Value of Assets(1)		Fair Value of Liabilities		Notional		Fair Value of Assets(1)		Fair Value of Liabilities
Interest rate derivatives	$	668.4	$	15.2	$	—	$	733.6	$	32.0	$	—

(1)Included within Other Assets, net on the Consolidated Balance Sheets.

Refer to Note 15, "Fair Value of Financial Instruments," for additional information related to the fair value methodology used for derivative financial instruments.

The following table presents the gains / (losses) on derivatives in cash flow hedging relationships recognized in Other Comprehensive Income (in millions):

	Three Months Ended
Derivatives designated as cash flow hedges	March 31, 2023		March 31, 2022
Interest rate derivatives	$	(8.6)	$	24.1

The following table presents the amount of gains / (losses) on derivative instruments reclassified from Accumulated Other Comprehensive Income into earnings (in millions):

	Financial Statement Classification	Three Months Ended
Derivatives designated as cash flow hedges		March 31, 2023		March 31, 2022
Interest rate derivatives	Interest expense	$	2.3	$	(1.1)

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Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

15. Fair Value of Financial Instruments

Our financial instruments consist primarily of cash, cash equivalents and restricted cash, marketable securities, notes and other receivables, derivatives assets, debt, warrants and other liabilities. We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures, pursuant to ASC 820, "Fair Value Measurements and Disclosures." The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

ASC 820, "Fair Value Measurements and Disclosures," requires disclosure regarding determination of fair value for assets and liabilities and establishes a hierarchy under which these assets and liabilities must be grouped, based on significant levels of observable or unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumption. This hierarchy requires the use of observable market data when available. These two types of inputs have created the following fair value hierarchy:

Level 1 - Quoted unadjusted prices for identical instruments in active markets that we have the ability to access;

Level 2 - Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs and significant value drivers are observable (e.g., interest rates, yield curves, prepayment speeds, default rates, loss severity, etc.) in active markets or can be corroborated by observable market data; and

Level 3 - Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The unobservable inputs reflect our assumptions about the assumptions that market participants would use.

Assets by Hierarchy Level

The table below sets forth our financial assets and liabilities (in millions) that required disclosure of fair value on a recurring basis as of March 31, 2023. The table presents the carrying values and fair values of our financial instruments as of March 31, 2023 and December 31, 2022, that were measured using the valuation techniques described above. The table excludes other financial instruments such as other receivables and accounts payable as the carrying values associated with these instruments approximate their fair value since their maturities are less than one year. These are classified as Level 1 in the hierarchy.

	March 31, 2023
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	74.8	$	74.8	$	—	$	—	$	74.8
Marketable securities	105.5		105.5		—		—		105.5
Installment notes receivable on manufactured homes, net	62.2		—		—		62.2		62.2
Notes receivable from real estate developers and operators	435.0		—		—		435.0		435.0
Derivative assets	15.2		—		15.2		—		15.2
Total assets measured at fair value	$	692.7	$	180.3	$	15.2	$	497.2	$	692.7
Financial Liabilities
Secured debt	$	3,386.4	$	—	$	3,386.4	$	—	$	3,015.4
Unsecured debt
Senior unsecured notes	2,175.6		—		2,175.6		—		1,926.1
Line of credit and other unsecured debt	1,900.0		—		1,900.0		—		1,900.0
Total unsecured debt	4,075.6		—		4,075.6		—		3,826.1
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,482.2	$	—	$	7,462.0	$	20.2	$	6,861.7

	December 31, 2022
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	90.4	$	90.4	$	—	$	—	$	90.4
Marketable securities	127.3		127.3		—		—		127.3
Installment notes receivable on manufactured homes, net	65.9		—		—		65.9		65.9
Notes receivable from real estate developers and operators	305.2		—		—		305.2		305.2
Derivative assets	32.0		—		32.0		—		32.0
Total assets measured at fair value	$	620.8	$	217.7	$	32.0	$	371.1	$	620.8
Financial Liabilities
Secured debt	$	3,217.8	$	—	$	3,217.8	$	—	$	2,814.1
Unsecured debt
Senior unsecured notes	1,779.6		—		1,779.6		—		1,432.7
Line of credit and other unsecured debt	2,199.8		—		2,199.8		—		2,199.8
Total unsecured debt	3,979.4		—		3,979.4		—		3,632.5
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,217.4	$	—	$	7,197.2	$	20.2	$	6,466.8

We utilize fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The following methods and assumptions were used in order to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash, Cash Equivalents and Restricted Cash

The carrying values of cash, cash equivalents and restricted cash approximate their fair market values due to the short-term nature of the instruments. These are classified as Level 1 in the hierarchy.

Marketable Securities

The fair value of marketable securities is measured by the quoted unadjusted share price which is readily available in active markets (Level 1). The change in the marketable securities balance was as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning Balance	$	127.3	$	186.9
Change in fair value measurement	(19.9)		(53.4)
Foreign currency translation adjustment	(1.9)		(7.7)
Dividend reinvestment, net of tax	—		1.5
Ending Balance	$	105.5	$	127.3

Installment Notes Receivable on Manufactured Homes

Installment notes receivable on manufactured homes are recorded at fair value and are measured using model-derived indicative pricing using primarily unobservable inputs, inclusive of default rates, interest rates and recovery rates (Level 3). Refer to Note 4, "Notes and Other Receivables," for additional information.

Notes Receivable from Real Estate Developers and Operators

Notes receivable from real estate developers and operators are recorded at fair value and are measured using model-derived indicative pricing using primarily unobservable inputs including interest rates and counterparty performance (Level 3). The carrying values of the notes generally approximate their fair market values either due to the nature of the note and / or the note being secured primarily by underlying real estate and real estate related collateral and / or personal guarantees. Refer to Note 4, "Notes and Other Receivables," for additional information.

Derivative Assets - Interest Rate Derivatives

Interest rate derivatives are recorded at fair value and consist of treasury rate lock contracts, interest rate swaps and forward swaps. The fair value of these financial instruments are measured using observable inputs based on the 10-year Treasury note rate, the SOFR and SONIA Rates, respectively (Level 2).

Secured Debt

Secured debt consists primarily of our mortgage term loans. The fair value of mortgage term loans is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans and instruments of comparable maturities (Level 2). Refer to Note 8, "Debt and Line of Credit," for additional information.

Unsecured Debt

Senior unsecured notes - the fair value of senior unsecured notes is based on the estimates of management and on rates currently quoted, rates currently prevailing for comparable loans and instruments of comparable maturities (Level 2). Refer to Note 8, "Debt and Line of Credit," for additional information.

Line of credit and other unsecured debt - consists primarily of our Senior Credit Facility. We have variable rates on our Senior Credit Facility. The fair value of the debt with variable rates approximates carrying value as the interest rates of these amounts approximate market rates. The estimated fair value of our indebtedness as of March 31, 2023 approximated its gross carrying value.

Other Financial Liabilities

We estimate the fair value of contingent consideration liabilities based on valuation models using significant unobservable inputs that generally consider discounting of future cash flows using market interest rates and adjusting for non-performance risk over the remaining term of the liability (Level 3).

Level 3 Reconciliation, Measurements and Transfers

We review the fair value hierarchy classifications each reporting period. Changes in the observability of the valuation attributes may result in a reclassification of certain financial assets or liabilities. Such reclassifications are reported as transfers in and out of Level 3 at the beginning fair value for the reporting period in which the changes occur. Availability of secondary market activity and consistency of pricing from third-party sources impacts our ability to classify securities as Level 2 or Level 3. There were no transfers into or out of Level 3 during the three months ended March 31, 2023.

The following tables summarize changes to our financial instruments carried at fair value and classified within Level 3 of the fair value hierarchy for the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023						March 31, 2022
Assets:	Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants		Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants
Level 3 beginning balance at December 31, 2022 and 2021	$	65.9	$	305.2	$	—	$	79.1	$	284.0	$	—
Realized gains / (losses)(1)	(1.7)		—		(0.4)		0.2		—		(0.6)
Purchases and issuances	0.1		124.3		0.4		0.9		30.5		1.2
Sales and settlements	(2.1)		(3.0)		—		(3.0)		(4.1)		—
Dispositions of properties	—		—		—		—		—		—
Foreign currency exchange gain / (losses)	—		8.5		—		—		(6.0)		—
Level 3 ending balance at March 31, 2023 and 2022	$	62.2	$	435.0	$	—	$	77.2	$	304.4	$	0.6

(1) Includes realized gains / (losses) recorded in earnings within the following line items on the Consolidated Income Statements: Warrants - Income from nonconsolidated affiliates; Installment Notes Receivable on MH, net - Gain on remeasurement of notes receivable.

	March 31, 2023		March 31, 2022
Liabilities:	Contingent Consideration		Contingent Consideration
Level 3 beginning balance December 31, 2022 and 2021	$	20.2	$	20.2
Level 3 ending balance at March 31, 2023 and 2022(1)	$	20.2	$	20.2

(1) There was no activity related to the Contingent consideration liability during the three months ended March 31, 2023 and 2022.

Although we have determined the estimated fair value amounts using available market information and commonly accepted valuation methodologies, considerable judgment is required in interpreting market data to develop fair value estimates. The fair value estimates are based on information available as of March 31, 2023. As such, our estimates of fair value could differ significantly from the actual carrying value.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

16. Commitments and Contingencies

Legal Proceedings

We are involved in various legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

Catastrophic Event-Related Charges - Hurricane Ian

In September 2022, Hurricane Ian made landfall on Florida's western coast. The storm primarily affected three properties in the Fort Myers area, comprising approximately 2,500 sites. These properties sustained significant flooding and wind damage from the hurricane. At other affected MH and RV properties, most of the damage was limited to trees, roofs, fences, skirting and carports. At affected marina properties, docks, buildings, and landscaping sustained wind and water damage.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. The table below sets forth estimated insurance recoveries (in millions):

	Three Months Ended March 31, 2023
Total estimated insurance receivable - December 31, 2022	$	54.9
Change in estimated insurance recoveries	22.1
Advances from insurer	(13.5)
Total estimated insurance receivable - March 31, 2023	$	63.5

The foregoing estimates are based on current information available, and we continue to assess these estimates. Actual charges and, insurance recoveries could vary significantly from these estimates. Any changes to these estimates will be recognized in the period(s) in which they are determined.

Changes in estimated insurance recoveries related to Hurricane Ian during the three months ended March 31, 2023 were primarily the result of incremental costs that exceeded the applicable deductible.

Expected insurance recoveries for lost earnings and redevelopment costs greater than asset impairment charges for the three Fort Myers, Florida properties were excluded from our Consolidated Statements of Operations for the three months ended March 31, 2023. We are actively working with our insurer on the related claims. The three Fort Myers, Florida RV communities will require redevelopment, followed by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

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Leases

3 Months Ended

Mar. 31, 2023

Leases [Abstract]

Leases

17. Leases

Lessee Accounting

We lease land under non-cancelable operating leases at certain MH, RV and Marina properties expiring at various dates through 2100. The majority of the leases have terms requiring fixed payments plus additional rents based on a percentage of revenues at those properties. We also have other operating leases, primarily office space and equipment expiring at various dates through 2042.

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

Right-of-use ("ROU") assets and lease liabilities for finance and operating leases as included in our Consolidated Balance Sheets are as follows (in millions):

	Financial Statement Classification	As of
Description		March 31, 2023		December 31, 2022
Lease Assets
Finance lease, right-of-use asset, net of accumulated amortization	Investment property, net	$	32.8	$	32.2
Operating lease, right-of-use asset, net	Other assets, net	$	186.8	$	189.4
Below market operating leases, net	Other assets, net	$	90.3	$	90.9
Lease Liabilities
Finance lease liabilities	Other liabilities	$	14.2	$	15.0
Operating lease liabilities	Other liabilities	$	160.0	$	160.3

Lease expense for finance and operating leases as included in our Consolidated Statements of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Finance Lease Expense
Amortization of ROU assets	Depreciation and amortization	$	0.7	$	—
Interest on lease liabilities	Interest expense	0.2		0.1
Operating lease cost	General and administrative expense, Property operating and maintenance, Depreciation and amortization	4.6		3.8
Variable lease cost	Property operating and maintenance	1.6		1.6
Short term lease cost	Property operating and maintenance	—		—
Total Lease Expense		$	7.1	$	5.5

Lease term, discount rates and additional information for finance and operating leases are as follows:

	As of
	March 31, 2023
Lease Term and Discount Rate
Weighted-average Remaining Lease Terms (years)
Finance lease	36.23
Operating lease	34.11
Weighted-average Discount Rate
Finance lease	3.38	%
Operating lease	3.80	%

	Three Months Ended
	March 31, 2023		March 31, 2022
Other Information (in millions)
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flow from operating leases	$	3.3	$	2.4
Financing cash flow from finance leases	5.9		0.1
Total Cash Paid On Lease Liabilities	$	9.2	$	2.5

Lessor Accounting

We are not the lessor for any finance leases at our MH, RV or Marina properties as of March 31, 2023.

Nearly all of our operating leases with our residents and customers at our MH and RV properties where we are the lessor are either month-to-month or for a time period not to exceed one year. As of March 31, 2023, future minimum lease payments with our residents or customers would not exceed 12 months.

We do not have any operating leases with real estate operators on our MH properties. At our RV communities and marinas, future minimum lease payments under non-cancellable leases with real estate operators where we are the lessor include the following as of March 31, 2023:

Maturity of Lease Payments (in millions)	Operating Leases
2023 (excluding the three months ended March 31, 2023)	$	21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$	118.0

The components of lease income for our operating leases, as included in our Consolidated Statement of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Operating Leases
Fixed lease income	Income from real property; Brokerage commissions and other revenue, net	$	7.9	$	7.1
Variable lease income(1)	Income from real property; Brokerage commissions and other revenue, net	$	1.5	$	0.7

(1)Consists of rent primarily based on a percentage of acquisition costs and net operating income.

Failed Sale Leaseback

In connection with our acquisition of Park Holidays, we assumed ground lease arrangements for 34 UK properties that we concluded to be failed sale-leaseback transactions under ASC Topic 842, "Leases." The arrangements have maturities ranging from 2117 through 2197 with an option to repurchase for £1.00 at the end of the term. The obligation related to the underlying ground leases has been recorded as a financial liability of $337.5 million as of March 31, 2023. The financial liability is recorded within Other Liabilities on the Consolidated Balance Sheets. The following table presents the future minimum rental payments for this financial liability as of March 31, 2023:

Maturity of Financial Liability (in millions)	March 31, 2023
2023 (excluding three months ended March 31, 2023)	$	5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	$	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$	337.5

Leases

17. Leases

Lessee Accounting

We lease land under non-cancelable operating leases at certain MH, RV and Marina properties expiring at various dates through 2100. The majority of the leases have terms requiring fixed payments plus additional rents based on a percentage of revenues at those properties. We also have other operating leases, primarily office space and equipment expiring at various dates through 2042.

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

Right-of-use ("ROU") assets and lease liabilities for finance and operating leases as included in our Consolidated Balance Sheets are as follows (in millions):

	Financial Statement Classification	As of
Description		March 31, 2023		December 31, 2022
Lease Assets
Finance lease, right-of-use asset, net of accumulated amortization	Investment property, net	$	32.8	$	32.2
Operating lease, right-of-use asset, net	Other assets, net	$	186.8	$	189.4
Below market operating leases, net	Other assets, net	$	90.3	$	90.9
Lease Liabilities
Finance lease liabilities	Other liabilities	$	14.2	$	15.0
Operating lease liabilities	Other liabilities	$	160.0	$	160.3

Lease expense for finance and operating leases as included in our Consolidated Statements of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Finance Lease Expense
Amortization of ROU assets	Depreciation and amortization	$	0.7	$	—
Interest on lease liabilities	Interest expense	0.2		0.1
Operating lease cost	General and administrative expense, Property operating and maintenance, Depreciation and amortization	4.6		3.8
Variable lease cost	Property operating and maintenance	1.6		1.6
Short term lease cost	Property operating and maintenance	—		—
Total Lease Expense		$	7.1	$	5.5

Lease term, discount rates and additional information for finance and operating leases are as follows:

	As of
	March 31, 2023
Lease Term and Discount Rate
Weighted-average Remaining Lease Terms (years)
Finance lease	36.23
Operating lease	34.11
Weighted-average Discount Rate
Finance lease	3.38	%
Operating lease	3.80	%

	Three Months Ended
	March 31, 2023		March 31, 2022
Other Information (in millions)
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flow from operating leases	$	3.3	$	2.4
Financing cash flow from finance leases	5.9		0.1
Total Cash Paid On Lease Liabilities	$	9.2	$	2.5

Lessor Accounting

We are not the lessor for any finance leases at our MH, RV or Marina properties as of March 31, 2023.

Nearly all of our operating leases with our residents and customers at our MH and RV properties where we are the lessor are either month-to-month or for a time period not to exceed one year. As of March 31, 2023, future minimum lease payments with our residents or customers would not exceed 12 months.

We do not have any operating leases with real estate operators on our MH properties. At our RV communities and marinas, future minimum lease payments under non-cancellable leases with real estate operators where we are the lessor include the following as of March 31, 2023:

Maturity of Lease Payments (in millions)	Operating Leases
2023 (excluding the three months ended March 31, 2023)	$	21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$	118.0

The components of lease income for our operating leases, as included in our Consolidated Statement of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Operating Leases
Fixed lease income	Income from real property; Brokerage commissions and other revenue, net	$	7.9	$	7.1
Variable lease income(1)	Income from real property; Brokerage commissions and other revenue, net	$	1.5	$	0.7

(1)Consists of rent primarily based on a percentage of acquisition costs and net operating income.

Failed Sale Leaseback

In connection with our acquisition of Park Holidays, we assumed ground lease arrangements for 34 UK properties that we concluded to be failed sale-leaseback transactions under ASC Topic 842, "Leases." The arrangements have maturities ranging from 2117 through 2197 with an option to repurchase for £1.00 at the end of the term. The obligation related to the underlying ground leases has been recorded as a financial liability of $337.5 million as of March 31, 2023. The financial liability is recorded within Other Liabilities on the Consolidated Balance Sheets. The following table presents the future minimum rental payments for this financial liability as of March 31, 2023:

Maturity of Financial Liability (in millions)	March 31, 2023
2023 (excluding three months ended March 31, 2023)	$	5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	$	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$	337.5

Leases

17. Leases

Lessee Accounting

We lease land under non-cancelable operating leases at certain MH, RV and Marina properties expiring at various dates through 2100. The majority of the leases have terms requiring fixed payments plus additional rents based on a percentage of revenues at those properties. We also have other operating leases, primarily office space and equipment expiring at various dates through 2042.

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

Right-of-use ("ROU") assets and lease liabilities for finance and operating leases as included in our Consolidated Balance Sheets are as follows (in millions):

	Financial Statement Classification	As of
Description		March 31, 2023		December 31, 2022
Lease Assets
Finance lease, right-of-use asset, net of accumulated amortization	Investment property, net	$	32.8	$	32.2
Operating lease, right-of-use asset, net	Other assets, net	$	186.8	$	189.4
Below market operating leases, net	Other assets, net	$	90.3	$	90.9
Lease Liabilities
Finance lease liabilities	Other liabilities	$	14.2	$	15.0
Operating lease liabilities	Other liabilities	$	160.0	$	160.3

Lease expense for finance and operating leases as included in our Consolidated Statements of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Finance Lease Expense
Amortization of ROU assets	Depreciation and amortization	$	0.7	$	—
Interest on lease liabilities	Interest expense	0.2		0.1
Operating lease cost	General and administrative expense, Property operating and maintenance, Depreciation and amortization	4.6		3.8
Variable lease cost	Property operating and maintenance	1.6		1.6
Short term lease cost	Property operating and maintenance	—		—
Total Lease Expense		$	7.1	$	5.5

Lease term, discount rates and additional information for finance and operating leases are as follows:

	As of
	March 31, 2023
Lease Term and Discount Rate
Weighted-average Remaining Lease Terms (years)
Finance lease	36.23
Operating lease	34.11
Weighted-average Discount Rate
Finance lease	3.38	%
Operating lease	3.80	%

	Three Months Ended
	March 31, 2023		March 31, 2022
Other Information (in millions)
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flow from operating leases	$	3.3	$	2.4
Financing cash flow from finance leases	5.9		0.1
Total Cash Paid On Lease Liabilities	$	9.2	$	2.5

Lessor Accounting

We are not the lessor for any finance leases at our MH, RV or Marina properties as of March 31, 2023.

Nearly all of our operating leases with our residents and customers at our MH and RV properties where we are the lessor are either month-to-month or for a time period not to exceed one year. As of March 31, 2023, future minimum lease payments with our residents or customers would not exceed 12 months.

We do not have any operating leases with real estate operators on our MH properties. At our RV communities and marinas, future minimum lease payments under non-cancellable leases with real estate operators where we are the lessor include the following as of March 31, 2023:

Maturity of Lease Payments (in millions)	Operating Leases
2023 (excluding the three months ended March 31, 2023)	$	21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$	118.0

The components of lease income for our operating leases, as included in our Consolidated Statement of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Operating Leases
Fixed lease income	Income from real property; Brokerage commissions and other revenue, net	$	7.9	$	7.1
Variable lease income(1)	Income from real property; Brokerage commissions and other revenue, net	$	1.5	$	0.7

(1)Consists of rent primarily based on a percentage of acquisition costs and net operating income.

Failed Sale Leaseback

In connection with our acquisition of Park Holidays, we assumed ground lease arrangements for 34 UK properties that we concluded to be failed sale-leaseback transactions under ASC Topic 842, "Leases." The arrangements have maturities ranging from 2117 through 2197 with an option to repurchase for £1.00 at the end of the term. The obligation related to the underlying ground leases has been recorded as a financial liability of $337.5 million as of March 31, 2023. The financial liability is recorded within Other Liabilities on the Consolidated Balance Sheets. The following table presents the future minimum rental payments for this financial liability as of March 31, 2023:

Maturity of Financial Liability (in millions)	March 31, 2023
2023 (excluding three months ended March 31, 2023)	$	5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	$	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$	337.5

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Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2023

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

18. Recent Accounting Pronouncements

Recent Accounting Pronouncements - Adopted

In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting," which provides optional guidance for accounting for contracts, hedging relationships and other transactions affected by the reference rate reform, if certain criteria are met. The provisions of this standard are available for election through December 31, 2022. In December 2022, the FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848," which defers the sunset date for Topic 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. As of December 31, 2022, all of our debt and derivative instruments were converted from LIBOR to alternative reference rates. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements as the majority of our debt has fixed interest rates.

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Subsequent Events

3 Months Ended

Mar. 31, 2023

Subsequent Events [Abstract]

Subsequent Events

19. Subsequent Events

We have evaluated our Consolidated Financial Statements for subsequent events through the date that this Form 10-Q was issued.

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Revenue (Tables)

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table disaggregates our revenue by major source and segment (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Revenues
Real property	$	252.9	$	99.6	$	88.9	$	441.4	$	208.8	$	102.7	$	76.3	$	387.8
Home sales	79.9		6.4		—		86.3		58.0		6.7		—		64.7
Service, retail, dining and entertainment	5.4		5.8		91.4		102.6		2.3		7.3		71.6		81.2
Interest	10.3		0.9		0.2		11.4		6.2		0.6		—		6.8
Brokerage commissions and other, net	4.2		4.4		0.9		9.5		4.2		3.5		0.3		8.0
Total Revenues	$	352.7	$	117.1	$	181.4	$	651.2	$	279.5	$	120.8	$	148.2	$	548.5

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Real Estate Acquisitions and Dispositions (Tables)

3 Months Ended

Mar. 31, 2023

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

During the three months ended March 31, 2023, we acquired the following properties:

Community Name	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Fox Run	MH: asset acquisition	68	72	MI	January
Savannah Yacht Center	Marina: asset acquisition	24	—	GA	March
	Total	92	72

For the year ended December 31, 2022, we acquired the following properties:

Property Name(1)	Type	Sites, Wet Slips and Dry Storage Spaces	Development Sites	State, Province or Country	Month Acquired
Harrison Yacht Yard(2)	Marina: asset acquisition	21	—	MD	January
Outer Banks	Marina: asset acquisition	196	—	NC	January
Jarrett Bay Boatworks	Marina: business combination	12	—	NC	February
Tower Marine	Marina: asset acquisition	446	—	MI	March
Sandy Bay	MH: asset acquisition	730	456	UK	March
Park Holidays(3)	MH: business combination	15,906	608	UK	April
Christies Parks(2)	MH: asset acquisition	249	—	UK	April
Bluewater	Marina: asset acquisition	200	—	Multiple	April
Bluewater Yacht Sales(2)	Marina: business combination	—	—	Multiple	April
Bodmin Holiday Park	MH: asset acquisition	69	—	UK	April
Kittery Point	Marina: asset acquisition	62	—	ME	May
Spanish Trails MHC	MH: asset acquisition	195	6	AZ	June
Pine Acre Trails	MH: asset acquisition	251	603	TX	June
Bel Air Estates & Sunrise Estates(4)	MH: asset acquisition	379	—	CA	June
Park Leisure(5)	MH: business combination	2,914	123	UK	June
Montauk Yacht Club	Marina: business combination	232	—	NY	July
Callaly Leisure(6)	MH: asset acquisition	380	823	UK	September
Newhaven	MH: asset acquisition	224	14	UK	October
Bayfront Marina	Marina: asset acquisition	583	—	CA	November
Marina Bay Yacht Harbor	Marina: asset acquisition	800	—	CA	December
Jellystone Lincoln	RV: asset acquisition	267	—	DE	December
Norway Commons	MH: asset acquisition	231	22	ME	December
	Total	24,347	2,655

(1) Property names are subject to changes subsequent to acquisition.

(2) Combined with an existing property.

(3) Includes 40 owned and two managed properties.

(4) Includes two properties.

(5) Includes 11 properties.

(6) Includes one development property.

Schedule of Purchase Price Allocation

The following table summarizes the amount of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed during the three months ended March 31, 2023 (in millions):

	At Acquisition Date								Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		Other assets, net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity(1)		Total consideration
Asset Acquisition
Fox Run(2)(3)	$	7.0	$	0.2	$	—	$	7.2	$	2.7	$	4.5	$	7.2
Savannah Yacht Center(2)(4)	100.0		—		4.5		104.5		4.5		100.0		104.5
Total	$	107.0	$	0.2	$	4.5	$	111.7	$	7.2	$	104.5	$	111.7

(1) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(2) The above allocations are estimates pending purchase price allocations.

(3) In conjunction with the acquisition, the Operating Partnership issued 31,289 common OP units valued at $4.5 million.

(4) In conjunction with the acquisition, the Operating Partnership issued one million Series K preferred OP units valued at $100.0 million.

The following table summarizes the amounts of assets acquired, net of liabilities assumed at the acquisition date and the consideration paid for the acquisitions completed in 2022 (in millions):

	At Acquisition Date										Consideration
	Investment in property		Inventory of manufactured homes, boat parts and retail related items		In-place leases, goodwill and other intangible assets(1)		Other assets / (liabilities), net		Total identifiable assets acquired net of liabilities assumed		Cash and escrow		Temporary and permanent equity		Total consideration
Asset Acquisition
Harrison Yacht Yard(4)	$	5.8	$	—	$	—	$	—	$	5.8	$	5.8	$	—	$	5.8
Outer Banks	5.2		—		—		(0.4)		4.8		4.8		—		4.8
Tower Marine	20.2		—		0.2		(2.1)		18.3		18.3		—		18.3
Sandy Bay	247.9		9.4		2.1		(68.3)		191.1		191.1		—		191.1
Christies Parks(4)	10.1		—		—		2.1		12.2		12.2		—		12.2
Bluewater	25.3		1.3		0.1		1.3		28.0		28.0		—		28.0
Bodmin Holiday Park	13.1		—		—		—		13.1		13.1		—		13.1
Kittery Point	8.0		0.1		—		(0.1)		8.0		7.0		1.0		8.0
Spanish Trails MHC	20.6		1.8		—		—		22.4		22.4		—		22.4
Pine Acre Trails	29.7		—		—		—		29.7		29.7		—		29.7
Bel Air Estates & Sunrise Estates	39.3		—		0.7		—		40.0		40.0		—		40.0
Callaly Leisure	23.8		0.1		—		(0.3)		23.6		23.6		—		23.6
Newhaven	6.2		—		—		—		6.2		6.2		—		6.2
Bayfront Marina	11.3		—		0.9		(0.5)		11.7		11.7		—		11.7
Marina Bay Yacht Harbor	16.2		—		0.2		(0.7)		15.7		15.7		—		15.7
Jellystone Lincoln(5)	17.0		—		—		1.2		18.2		18.2		—		18.2
Norway Commons	15.1		0.4		0.3		—		15.8		15.8		—		15.8
Business Combination
Jarrett Bay Boatworks(6)	21.3		1.4		47.5		1.0		71.2		68.4		2.8		71.2
Park Holidays(7)	1,254.7		29.5		574.5		(624.9)		1,233.8		1,199.9		33.9		1,233.8
Park Leisure(8)	259.5		0.7		77.5		(111.9)		225.8		225.8		—		225.8
Montauk Yacht Club	163.6		0.3		26.3		0.3		190.5		190.5		—		190.5
Total	$	2,213.9	$	45.0	$	730.3	$	(803.3)	$	2,185.9	$	2,148.2	$	37.7	$	2,185.9

(1) Refer to Note 5, "Goodwill and Other Intangible Assets," for additional detail on goodwill and other intangible assets.

(2) Refer to Note 9, "Equity and Temporary Equity," for additional detail.

(3) Property names are subject to changes subsequent to acquisition.

(4) Combined with an existing property.

(5) In December 2020, we entered into a loan agreement pursuant to which we extended credit to Blue Water to finance the construction of Jellystone Lincoln (the "RV Park"). In December 2022, we entered into a purchase and sale agreement pursuant to which we purchased the RV Park for cash consideration of $5.0 million, which was applied toward the existing Blue Water loan balance of $12.9 million, and the remaining loan balance of $7.9 million was forgiven. Upon acquisition of the RV Park, we agreed to loan Blue Water an amount equal to $3.7 million, accounted as consideration based on the loan forgiveness terms. Additional consideration for vacation rental units of $0.4 million, resulted in a total purchase price of $17.0 million. In addition, we entered into a lease agreement pursuant to which Blue Water will pay rent to us and continue to operate the park.

(6) The balance includes the marina acquired in February and the yacht sales business acquired in April of which $0.1 million was recorded in Investment property, $17.6 million in Goodwill and other intangible assets, and $0.4 million in Other assets / (liabilities), net.

(7) Includes acquired intangible assets subject to amortization of $70.2 million with a weighted average amortization period of 14.6 years, consisting of trademarks and trade names, customer relationships and other intangible assets.

(8) The purchase price allocation is preliminary as of December 31, 2022, subject to revision based on the final purchase price allocations to be finalized one year from the acquisition date.

Business Acquisition, Pro Forma Information

Total revenues and Net income included in the Consolidated Statements of Operations for the year ended December 31, 2022 related to business combinations completed in 2022 are set forth in the following table (in millions):

	Year Ended
	December 31, 2022
Total revenues	$	353.6
Net income	$	13.8

The information presented below has been prepared for comparative purposes only and does not purport to be indicative of either future results of operations or the results of operations that would have actually occurred had the acquisitions been consummated on January 1, 2021 (in millions, except for per share data):

	Year Ended (unaudited)
	December 31, 2022
Total revenues	$	3,091.3
Net income attributable to SUI common shareholders	$	241.2
Net income per share attributable to SUI common shareholders - basic	$	1.99
Net income per share attributable to SUI common shareholders - diluted	$	1.99

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Notes And Other Receivables (Tables)

3 Months Ended

Mar. 31, 2023

Notes and Loans Payable, by Type, Current and Noncurrent [Abstract]

Schedule of notes and other receivables

The following table sets forth certain information regarding notes and other receivables (in millions):

	March 31, 2023		December 31, 2022
Installment notes receivable on manufactured homes, net	$	62.2	$	65.9
Notes receivable from real estate developers and operators	435.0		305.2
Other receivables, net	219.5		246.2
Total Notes and Other Receivables, net	$	716.7	$	617.3

Schedule Of Other Receivables

Other receivables, net were comprised of amounts due from the following categories (in millions):

	March 31, 2023		December 31, 2022
Insurance receivables	$	74.9	$	78.5
Marina customers for storage, service and lease payments, net(1)	46.4		40.0
Home sale proceeds	31.8		28.9
MH and annual RV residents for rent, utility charges, fees and other pass-through charges, net(2)	24.2		61.5
Other receivables(3)	42.2		37.3
Total Other Receivables, net	$	219.5	$	246.2

(1)Net of allowance of $2.4 million and $2.2 million as of March 31, 2023 and December 31, 2022, respectively.

(2)Net of allowance of $4.9 million and $5.9 million as of March 31, 2023 and December 31, 2022, respectively.

(3)Includes receivable from Rezplot Systems LLC, a nonconsolidated affiliate, in which we had 49.1% and 48.9% ownership interest as of March 31, 2023 and December 31, 2022, respectively. In June 2020, we made a convertible secured loan to Rezplot Systems LLC. The note allows for a principal amount of up to $10.0 million to be drawn down over a period of three years, bears an interest rate of 3.0% and is secured by all the assets of Rezplot Systems LLC. In January 2022, we made an additional loan to Rezplot Systems LLC that allows for a principal amount of up to $5.0 million to be drawn over a period of three years and bears an interest rate of 3.0%. The outstanding balances were $12.3 million and $12.7 million as of March 31, 2023 and December 31, 2022, respectively. Refer to Note 6, "Investments in Nonconsolidated Affiliates," for additional information on Rezplot Systems LLC

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Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

	December 31, 2022		Currency Translation Adjustment		Other(1)		March 31, 2023
Segment
MH	$	467.4	$	12.2	$	62.0	$	541.6
RV	9.5		—		—		9.5
Marina	541.5		—		—		541.5
Total	$	1,018.4	$	12.2	$	62.0	$	1,092.6

(1) During the three months ended March 31, 2023, adjustments in purchase price allocations resulted in the recognition of additional goodwill of $62.0 million in the MH segment, related to the Park Leisure business combination.

Schedule of Finite-Lived Intangible Assets

The gross carrying amounts and accumulated amortization of our intangible assets were as follows (in millions):

		March 31, 2023				December 31, 2022
Other Intangible Asset	Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
In-place leases	2 months - 13 years	$	166.0	$	(139.0)	$	165.7	$	(135.4)
Non-competition agreements	5 years	10.5		(4.5)		10.5		(4.1)
Trademarks and trade names	3 - 15 years	81.0		(6.8)		81.2		(5.5)
Customer relationships	4 - 17 years	131.5		(27.8)		131.5		(24.7)
Franchise agreements and other intangible assets	1 - 27 years	48.3		(10.0)		48.3		(8.9)
Total finite-lived assets		$	437.3	$	(188.1)	$	437.2	$	(178.6)
Indefinite-lived assets - Trademarks and trade names	N/A	141.0		—		140.9		—
Indefinite-lived assets - Other	N/A	2.5		—		2.5		—
Total indefinite-lived assets		$	143.5	$	—	$	143.4	$	—
Total		$	580.8	$	(188.1)	$	580.6	$	(178.6)

Schedule of Intangible Assets Amortization Expense

Amortization expenses related to our Other intangible assets were as follows (in millions):

	Three Months Ended
Other Intangible Asset Amortization Expense	March 31, 2023		March 31, 2022
In-place leases	$	3.6	$	4.6
Non-competition agreements	0.5		0.5
Trademarks and trade names	1.5		0.2
Customer relationships	3.2		2.8
Franchise fees and other intangible assets	0.9		0.6
Total	$	9.7	$	8.7

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We anticipate amortization expense for Other intangible assets to be as follows for the next five years (in millions):

	Remainder 2023		2024		2025		2026		2027
In-place leases	$	7.0	$	7.1	$	6.2	$	3.5	$	2.0
Non-competition agreements	1.6		2.1		2.1		0.1		—
Trademarks and trade names	4.6		5.2		5.2		5.2		5.2
Customer relationships	9.5		12.7		12.7		12.2		12.2
Franchise agreements and other intangible assets	3.0		3.3		3.1		2.9		2.6
Total	$	25.7	$	30.4	$	29.3	$	23.9	$	22.0

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Investment in Nonconsolidated Affiliates (Tables)

3 Months Ended

Mar. 31, 2023

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

The investment balance in each nonconsolidated affiliate was as follows (in millions):

Investment	March 31, 2023		December 31, 2022
Investment in RezPlot	$	—	$	—
Investment in Sungenia JV	45.1		44.5
Investment in GTSC	40.8		54.5
Investment in SV Lift	2.2		2.3
Total	$	88.1	$	101.3

The income / (loss) from each nonconsolidated affiliate is as follows (in millions):

	Three Months Ended
Income / (Loss) from Nonconsolidated Affiliates	March 31, 2023		March 31, 2022
RezPlot equity loss	$	(1.5)	$	(0.7)
Sungenia JV equity income	0.6		0.6
GTSC equity income	1.0		1.2
SV Lift equity loss	(0.3)		(0.2)
Total Income / (Loss) from Nonconsolidated Affiliates	$	(0.2)	$	0.9

The change in the GTSC investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	54.5	$	35.7
Contributions	2.2		37.4
Distributions	(12.4)		(22.5)
Equity earnings	1.0		5.9
Fair value adjustment	(4.5)		(2.0)
Ending Balance	$	40.8	$	54.5

The change in the Sungenia JV investment balance is as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning balance	$	44.5	$	36.2
Cumulative translation adjustment	—		(3.0)
Contributions	—		9.1
Equity earnings	0.6		2.2
Ending Balance	$	45.1	$	44.5

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Consolidated Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2023

Disclosure of Variable Interest Entities [Abstract]

Schedule of Variable Interest Entities

The following table summarizes the assets and liabilities of our consolidated VIEs, with the exception of the Operating Partnership, included in our Consolidated Balance Sheets after eliminations (in millions):

	March 31, 2023		December 31, 2022
Assets
Investment property, net	$	782.3	$	739.7
Cash, cash equivalents and restricted cash	11.0		14.1
Other intangible assets, net	12.7		13.0
Other assets, net	5.7		10.5
Total Assets	$	811.7	$	777.3
Liabilities and Other Equity
Secured debt	$	22.0	$	22.2
Unsecured debt	35.2		35.2
Advanced reservation deposits and rent	34.1		13.8
Accrued expenses and accounts payable	20.6		11.8
Other liabilities	1.2		1.4
Total Liabilities	113.1		84.4
Temporary equity	39.0		41.3
Total Liabilities and Other Equity	$	152.1	$	125.7

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Debt and Line of Credit (Tables)

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of debt and lines of credit

The following table sets forth certain information regarding debt including premiums, discounts and deferred financing costs (in millions, except for statistical information):

	Carrying Amount				Weighted Average Years to Maturity		Weighted Average Interest Rates
	March 31, 2023		December 31, 2022		March 31, 2023	December 31, 2022	March 31, 2023		December 31, 2022
Secured Debt(1)	$	3,386.4	$	3,217.8	9.8	10.2	3.811	%	3.723	%
Unsecured Debt
Senior unsecured notes(2)	2,175.6		1,779.6		8.2	8.1	3.375	%	2.9	%
Line of credit and other debt(3)	1,838.1		2,130.6		2.4	2.8	4.638	%	4.417	%
Preferred equity - Sun NG Resorts - mandatorily redeemable	35.2		35.2		1.5	1.8	6.0	%	6.0	%
Preferred OP units - mandatorily redeemable	26.7		34.0		0.8	3.1	6.5	%	5.921	%
Total Unsecured Debt	4,075.6		3,979.4
Total Debt	$	7,462.0	$	7,197.2	7.4	7.4	3.908	%	3.746	%

(1) Balances at March 31, 2023 and December 31, 2022 include $0.1 million of net debt premium, respectively, and $16.2 million and $14.6 million of deferred financing costs, respectively.

(2) Balances at March 31, 2023 and December 31, 2022 include $7.0 million and $6.1 million of net debt discount, respectively, and $17.4 million and $14.3 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

(3) Balance at March 31, 2023 and December 31, 2022 includes $2.7 million and $3.0 million of deferred financing costs, respectively. Weighted average interest rates include the impact of hedge activity.

During the three months ended March 31, 2023, no mortgage term loans were paid off. During the year ended December 31, 2022, we paid off the following mortgage term loans during the quarters presented below (in millions, except for statistical information):

Period	Repayment Amount			Fixed Interest Rate		Maturity Date	Loss on Extinguishment of Debt
Three months ended September 30, 2022	$	318.0	(1)	4.81	%	December 6, 2022 - September 6, 2024	$	4.0
Three months ended June 30, 2022	$	15.8		3.89	%	October 1, 2022	$	—

(1)Includes 17 mortgage term loans which were scheduled to mature from December 6, 2022 to September 6, 2024 that were secured by 35 properties.

During the three months ended March 31, 2023 and the year ended December 31, 2022, we entered into the following mortgage term loans during the quarters presented below (in millions, except for statistical information).

Period	Loan Amount			Term (in years)	Interest Rate		Maturity Date
Three months ended March 31, 2023	$	85.0	(1)	3	5.0	%	February 13, 2026
	$	99.1	(2)	7 - 10	5.72	%	April 1, 2030 - April 1, 2033
Three months ended December 31, 2022	$	226.0	(3)	4 - 7	4.5	%	June 15, 2026 - December 15, 2029
Three months ended September 30, 2022	$	20.6	(4)(6)	25	3.65	%	August 10, 2047
	$	3.4	(5)(6)	25	3.65	%	August 10, 2047

(1)Includes five existing encumbered properties.

(2)Includes 22 existing encumbered properties.

(3)Includes 18 existing encumbered properties.

(4)Represents a construction loan (undrawn as of March 31, 2023).

(5)Represents mortgage term loan.

(6)Represents loans jointly secured by one property.

The following table sets forth certain information regarding our outstanding senior unsecured notes (in millions, except for statistical information). All senior unsecured notes include interest payments on a semi-annual basis in arrears, and are recorded in the Unsecured debt line item on the Consolidated Balance Sheets.

			Carrying Amount
	Principal Amount		March 31, 2023		December 31, 2022
5.7% notes, issued in January 2023 and due in January 2033(1)	$	400.0	$	395.4	N/A
4.2% notes, issued in April 2022 and due in April 2032	600.0		592.0		591.8
2.3% notes, issued in October 2021 and due in November 2028	450.0		446.3		446.2
2.7% notes, issued in June 2021 and October 2021, and due in July 2031	750.0		741.9		741.6
Total	$	2,200.0	$	2,175.6	$	1,779.6

(1) In January 2023, the Operating Partnership issued $400.0 million of senior unsecured notes with an interest rate of 5.7% and a 10-year term, due January 15, 2033 (the "2033 Notes"). Interest on the notes is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2023. The net proceeds from the offering were $395.3 million, after deducting underwriters' discounts and estimated offering expenses. We used the net proceeds from the offering to repay borrowings outstanding under our Senior Credit Facility.

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Equity and Temporary Equity (Tables)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Redeemable Noncontrolling Interest

The following table sets forth the various series of redeemable preferred OP units that were outstanding as of March 31, 2023 and December 31, 2022 and the related terms, and summarizes the balance included within Temporary Equity on our Consolidated Balance Sheets (in millions, except for statistical information):

Description	OP Units Outstanding	Exchange Rate(1)	Annual Distribution Rate(2)		Cash Redemption(3)	Redemption Period	March 31, 2023		December 31, 2022
Series D preferred OP units	488,958	0.8000	4.0	%	Holder's Option	Any time after earlier of January 31, 2024 or death of holder	$	47.7	$	48.1
Series F preferred OP units	90,000	0.6250	3.0	%	Holder's Option	Any time after earlier of May 14, 2025 or death of holder	8.7		8.7
Series G preferred OP units	239,710	0.6452	3.2	%	Holder's Option	Any time after earlier of September 30, 2025 or death of holder	24.0		24.4
Series H preferred OP units	581,342	0.6098	3.0	%	Holder's Option	Any time after earlier of October 30, 2025 or death of holder	56.3		56.7
Series J preferred OP units	239,000	0.6061	2.85	%	Holder's Option	During the 30-day period following a change of control of the Company or any time after April 21, 2026	23.3		23.6
Series K preferred OP units	1,000,000	0.5882	4.0	%	Holder's Option	Within 60 days after March 23, 2028	99.9		—
Total	2,639,010						$	259.9	$	161.5

(1) Exchange rates are subject to adjustment upon stock splits, recapitalizations and similar events. The exchange rates of certain series of OP units are approximated to four decimal places.

(2) Distributions are payable on the issue price of each OP unit which is $100.00 per unit for all these preferred OP units.

(3) The redemption price for each preferred OP unit redeemed will be equal to its issue price plus all accrued but unpaid distributions.

The following table summarizes the redeemable equity interests included in Temporary Equity on our Consolidated Balance Sheets (in millions):

Equity Interest	Description	March 31, 2023		December 31, 2022
FPG Sun Moreno Valley 66 LLC	In connection with the investment in land for future development in the city of Moreno Valley, California, at the property known as FPG Sun Moreno Valley 66 LLC	$	0.1	$	0.1
Solar Energy Project CA II LLC	A joint venture that operates and maintains solar energy equipment in select California communities	4.3		4.2
Solar Energy Project LLC	A joint venture that operates and maintains solar energy equipment in select California communities	2.0		1.9
Solar Energy Project III LLC	A joint venture that operates and maintains solar energy equipment in select Arizona and California communities	1.9		0.3
FPG Sun Menifee 80 LLC	In connection with the investment in land for future development in the city of Menifee in California, at the property known as FPG Sun Menifee 80 LLC	0.1		0.1
NG Sun Whitewater LLC	In connection with the investment in land at the property known as Whitewater	2.5		3.2
NG Sun LLC	In connection with the investment in Sun NG Resorts, a joint venture that operates a portfolio of RV communities in the U.S.	27.7		31.1
NG Sun Beaver Brook LLC	In connection with the investment in Sun NG Beaver Brook LLC, a joint venture that operates one RV communities in the U.S.	0.4		0.5
Total		$	39.0	$	41.4

Activity of Conversions

Conversions to Common Stock - Subject to certain limitations, holders can convert certain series of OP units to shares of our common stock at any time. Below is the activity of conversions during the three months ended March 31, 2023 and 2022:

		Three Months Ended
		March 31, 2023		March 31, 2022
Series	Conversion Rate	Units / Shares Converted	Common Stock(1)	Units / Shares Converted	Common Stock(1)
Aspen preferred OP units	Various(2)	270,000	86,224	—	—
Common OP units	1.0000	2,910	2,910	1,260	1,260
Series A-1 preferred OP units	2.4390	—	—	2,694	6,568
Series C preferred OP units	1.1100	65	72	150	166
Series E preferred OP units	0.6897	—	—	5,000	3,448
Series G preferred OP units	0.6452	1,000	645	—	—
Series H preferred OP units	0.6098	25	15	—	—
Series J preferred OP units	0.6061	1,000	606	—	—

(1)Calculation may yield minor differences due to rounding incorporated in the above numbers.

(2)Refer to Note 8, "Debt and Line of Credit," for additional detail on Aspen preferred OP unit conversions.

Schedule of Dividends Payable

Distributions declared for the three months ended March 31, 2023 were as follows:

Common Stock, Common OP units and Restricted Stock Distributions	Record Date	Payment Date	Distribution Per Share		Total Distribution (in Millions)
March 31, 2023	3/31/2023	4/17/2023	$	0.93	$	118.0

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Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Schedule of Restricted Stock Granted

During the three months ended March 31, 2023 and 2022, shares were granted as follows:

Grant Period	Type	Plan	Shares Granted	Grant Date Fair Value Per Share			Vesting Type
2023	Key Employees	2015 Equity Incentive Plan	220,258	$	137.16	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	62,800	$	144.88	(1)	Time Based
2023	Executive Officers	2015 Equity Incentive Plan	82,200	$	108.60	(2)	Market Condition	(3)
2023	Directors	2004 Non-Employee Director Option Plan	16,000	$	148.12	(1)	Time Based
2022	Key Employees	2015 Equity Incentive Plan	138,510	$	180.49	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	66,000	$	178.20	(1)	Time Based
2022	Executive Officers	2015 Equity Incentive Plan	91,500	$	124.88	(2)	Market Condition	(3)
2022	Directors	2004 Non-Employee Director Option Plan	11,900	$	197.00	(1)	Time Based

(1)Represents the weighted average fair value per share of the closing price of our common stock on the dates the shares were awarded.

(2)Represents the weighted average fair value per share of the Monte Carlo simulation fair value price of our market condition awards on the dates the shares were awarded.

(3)Share-based compensation for restricted stock awards with market conditions is measured based on shares expected to vest using a Monte Carlo simulation to determine fair value.

Share-Based Payment Arrangement, Expensed and Capitalized, Amount

We recognized the following share-based compensation costs during the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023		March 31, 2022
Share-based compensation - expensed(1)	$	9.6	$	9.7
Share-based compensation - capitalized(2)	$	0.7	$	—

(1) Recorded within General and Administrative Expense on the Consolidated Income Statements.

(2) Capitalized to Land Improvements and Buildings on the Consolidated Balance Sheets.

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

A presentation of segment financial information is summarized as follows (in millions):

	Three Months Ended
	March 31, 2023								March 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Operating revenues	$	338.2	$	111.8	$	180.3	$	630.3	$	269.1	$	116.7	$	147.9	$	533.7
Operating expenses / Cost of sales	162.0		66.6		121.3		349.9		107.4		67.1		97.3		271.8
NOI	$	176.2	$	45.2	$	59.0	$	280.4	$	161.7	$	49.6	$	50.6	$	261.9
Adjustments to arrive at net income
Interest income							11.4								6.8
Brokerage commissions and other revenues, net							9.5								8.0
General and administrative expense							(63.9)								(55.7)
Catastrophic event-related charges, net							(1.0)								—
Business combination expense, net							(2.8)								(0.5)
Depreciation and amortization							(158.0)								(148.5)
Loss on extinguishment of debt (see Note 8)							—								(0.3)
Interest expense							(76.6)								(45.2)
Interest on mandatorily redeemable preferred OP units / equity							(1.0)								(1.0)
Loss on remeasurement of marketable securities							(19.9)								(34.5)
Loss on foreign currency exchanges							(2.7)								(2.2)
Gain / (loss) on dispositions of properties							(1.6)								13.4
Other expense, net							(1.0)								(0.6)
Gain / (loss) on remeasurement of notes receivable							(1.7)								0.2
Income / (loss) from nonconsolidated affiliates (see Note 6)							(0.2)								0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates							(4.5)								0.1
Current tax expense							(3.9)								(1.3)
Deferred tax benefit							4.6								—
Net Income / (Loss)							(32.9)								1.5
Less: Preferred return to preferred OP units / equity interests							2.4								3.0
Less: Loss attributable to noncontrolling interests							(5.2)								(2.2)
Net Income / (Loss) Attributable to SUI Common Shareholders							$	(30.1)							$	0.7

Reconciliation of Assets from Segment to Consolidated

	March 31, 2023								December 31, 2022
	MH		RV		Marina		Consolidated		MH		RV		Marina		Consolidated
Identifiable Assets
Investment property, net	$	6,871.5	$	3,808.2	$	3,171.1	$	13,850.8	$	7,181.7	$	3,744.3	$	3,045.0	$	13,971.0
Cash, cash equivalents and restricted cash	38.1		22.2		14.5		74.8		49.4		30.3		10.7		90.4
Marketable securities	68.3		37.2		—		105.5		82.4		44.9		—		127.3
Inventory of manufactured homes	209.4		23.1		—		232.5		189.1		13.6		—		202.7
Notes and other receivables, net	559.4		102.7		54.6		716.7		475.2		96.5		45.6		617.3
Goodwill	541.6		9.5		541.5		1,092.6		467.4		9.5		541.5		1,018.4
Other intangible assets, net	95.1		31.2		266.4		392.7		97.9		32.6		271.5		402.0
Other assets, net	603.2		51.3		243.7		898.2		356.1		63.0		236.0		655.1
Total Assets	$	8,986.6	$	4,085.4	$	4,291.8	$	17,363.8	$	8,899.2	$	4,034.7	$	4,150.3	$	17,084.2

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Computations of basic and diluted EPS were as follows (in millions, except for per share data):

	Three Months Ended
	March 31, 2023		March 31, 2022
Numerator
Net income / (loss) attributable to SUI common shareholders	$	(30.1)	$	0.7
Less: allocation to restricted stock awards	(0.1)		—
Basic earnings - net income / (loss) attributable to common shareholders after allocation to restricted stock awards	$	(30.0)	$	0.7
Add: allocation to restricted stock awards	(0.1)		—
Add: allocation to common and preferred OP units dilutive effect	(0.6)		—
Diluted earnings - net income / (loss) attributable to common shareholders after allocation to common and preferred OP units	$	(30.7)	$	0.7

Denominator
Weighted average common shares outstanding	123.3		115.3
Add: common shares dilutive effect: Forward Equity Offering	—		0.2
Add: dilutive restricted stock	0.4		0.4
Add: common and preferred OP units dilutive effect	2.5		—
Diluted weighted average common shares and securities	126.2		115.9
EPS Available to Common Shareholders After Allocation
Basic earnings / (loss) per share	$	(0.24)	$	0.01
Diluted earnings / (loss) per share	$	(0.24)	$	0.01

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents the outstanding securities that were excluded from the computation of diluted EPS as of March 31, 2023 and 2022 (in thousands):

	As of
	March 31, 2023	March 31, 2022
Common OP units	—	2,551
A-1 preferred OP units	208	272
A-3 preferred OP units	40	40
Aspen preferred OP units	989	1,284
Series C preferred OP units	306	306
Series D preferred OP units	489	489
Series E preferred OP units	80	85
Series F preferred OP units	90	90
Series G preferred OP units	240	241
Series H preferred OP units	581	581
Series I preferred OP units(1)	N/A	922
Series J preferred OP units	239	240
Series K preferred OP units	1,000	N/A
Total Securities	4,262	7,101

(1) All of our outstanding Series I preferred OP units converted during the year ended December 31, 2022.

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Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The following table presents the gross fair value amounts of our derivative financial instruments and the associated notional amounts (in millions):

	March 31, 2023						December 31, 2022
Derivatives designated as cash flow hedges	Notional		Fair Value of Assets(1)		Fair Value of Liabilities		Notional		Fair Value of Assets(1)		Fair Value of Liabilities
Interest rate derivatives	$	668.4	$	15.2	$	—	$	733.6	$	32.0	$	—

(1)Included within Other Assets, net on the Consolidated Balance Sheets.

Derivative Instruments, Gain (Loss)

The following table presents the gains / (losses) on derivatives in cash flow hedging relationships recognized in Other Comprehensive Income (in millions):

	Three Months Ended
Derivatives designated as cash flow hedges	March 31, 2023		March 31, 2022
Interest rate derivatives	$	(8.6)	$	24.1

The following table presents the amount of gains / (losses) on derivative instruments reclassified from Accumulated Other Comprehensive Income into earnings (in millions):

	Financial Statement Classification	Three Months Ended
Derivatives designated as cash flow hedges		March 31, 2023		March 31, 2022
Interest rate derivatives	Interest expense	$	2.3	$	(1.1)

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Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The table below sets forth our financial assets and liabilities (in millions) that required disclosure of fair value on a recurring basis as of March 31, 2023. The table presents the carrying values and fair values of our financial instruments as of March 31, 2023 and December 31, 2022, that were measured using the valuation techniques described above. The table excludes other financial instruments such as other receivables and accounts payable as the carrying values associated with these instruments approximate their fair value since their maturities are less than one year. These are classified as Level 1 in the hierarchy.

	March 31, 2023
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	74.8	$	74.8	$	—	$	—	$	74.8
Marketable securities	105.5		105.5		—		—		105.5
Installment notes receivable on manufactured homes, net	62.2		—		—		62.2		62.2
Notes receivable from real estate developers and operators	435.0		—		—		435.0		435.0
Derivative assets	15.2		—		15.2		—		15.2
Total assets measured at fair value	$	692.7	$	180.3	$	15.2	$	497.2	$	692.7
Financial Liabilities
Secured debt	$	3,386.4	$	—	$	3,386.4	$	—	$	3,015.4
Unsecured debt
Senior unsecured notes	2,175.6		—		2,175.6		—		1,926.1
Line of credit and other unsecured debt	1,900.0		—		1,900.0		—		1,900.0
Total unsecured debt	4,075.6		—		4,075.6		—		3,826.1
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,482.2	$	—	$	7,462.0	$	20.2	$	6,861.7

	December 31, 2022
	Carrying Value		Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
Financial Assets
Cash, cash equivalents and restricted cash	$	90.4	$	90.4	$	—	$	—	$	90.4
Marketable securities	127.3		127.3		—		—		127.3
Installment notes receivable on manufactured homes, net	65.9		—		—		65.9		65.9
Notes receivable from real estate developers and operators	305.2		—		—		305.2		305.2
Derivative assets	32.0		—		32.0		—		32.0
Total assets measured at fair value	$	620.8	$	217.7	$	32.0	$	371.1	$	620.8
Financial Liabilities
Secured debt	$	3,217.8	$	—	$	3,217.8	$	—	$	2,814.1
Unsecured debt
Senior unsecured notes	1,779.6		—		1,779.6		—		1,432.7
Line of credit and other unsecured debt	2,199.8		—		2,199.8		—		2,199.8
Total unsecured debt	3,979.4		—		3,979.4		—		3,632.5
Other financial liabilities (contingent consideration)	20.2		—		—		20.2		20.2
Total liabilities measured at fair value	$	7,217.4	$	—	$	7,197.2	$	20.2	$	6,466.8

The change in the marketable securities balance was as follows (in millions):

	Three Months Ended		Year Ended
	March 31, 2023		December 31, 2022
Beginning Balance	$	127.3	$	186.9
Change in fair value measurement	(19.9)		(53.4)
Foreign currency translation adjustment	(1.9)		(7.7)
Dividend reinvestment, net of tax	—		1.5
Ending Balance	$	105.5	$	127.3

Fair Value, Assets Measured on Recurring Basis

The following tables summarize changes to our financial instruments carried at fair value and classified within Level 3 of the fair value hierarchy for the three months ended March 31, 2023 and 2022 (in millions):

	March 31, 2023						March 31, 2022
Assets:	Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants		Installment Notes Receivable on MH, net		Notes Receivable From Real Estate Developers and Operators		Warrants
Level 3 beginning balance at December 31, 2022 and 2021	$	65.9	$	305.2	$	—	$	79.1	$	284.0	$	—
Realized gains / (losses)(1)	(1.7)		—		(0.4)		0.2		—		(0.6)
Purchases and issuances	0.1		124.3		0.4		0.9		30.5		1.2
Sales and settlements	(2.1)		(3.0)		—		(3.0)		(4.1)		—
Dispositions of properties	—		—		—		—		—		—
Foreign currency exchange gain / (losses)	—		8.5		—		—		(6.0)		—
Level 3 ending balance at March 31, 2023 and 2022	$	62.2	$	435.0	$	—	$	77.2	$	304.4	$	0.6

(1) Includes realized gains / (losses) recorded in earnings within the following line items on the Consolidated Income Statements: Warrants - Income from nonconsolidated affiliates; Installment Notes Receivable on MH, net - Gain on remeasurement of notes receivable.

	March 31, 2023		March 31, 2022
Liabilities:	Contingent Consideration		Contingent Consideration
Level 3 beginning balance December 31, 2022 and 2021	$	20.2	$	20.2
Level 3 ending balance at March 31, 2023 and 2022(1)	$	20.2	$	20.2

(1) There was no activity related to the Contingent consideration liability during the three months ended March 31, 2023 and 2022.

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Commitment and Contingencies (Tables)

3 Months Ended

Mar. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Business Insurance Recoveries

The table below sets forth estimated insurance recoveries (in millions):

	Three Months Ended March 31, 2023
Total estimated insurance receivable - December 31, 2022	$	54.9
Change in estimated insurance recoveries	22.1
Advances from insurer	(13.5)
Total estimated insurance receivable - March 31, 2023	$	63.5

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Leases (Tables)

3 Months Ended

Mar. 31, 2023

Leases [Abstract]

Lessee, Operating Lease, Liability, Maturity

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

Finance Lease, Liability, Maturity

Future minimum lease payments under non-cancellable leases as of March 31, 2023 where we are the lessee include:

Maturity of Lease Liabilities (in millions)	Operating Leases		Finance Leases		Total
2023 (excluding three months ended March 31, 2023)	$	10.2	$	0.6	$	10.8
2024	13.7		4.6		18.3
2025	13.2		0.5		13.7
2026	11.6		0.5		12.1
2027	9.7		0.5		10.2
Thereafter	240.6		20.3		260.9
Total Lease Payments	$	299.0	$	27.0	$	326.0
Less: Imputed interest	(139.0)		(12.8)		(151.8)
Present Value of Lease Liabilities	$	160.0	$	14.2	$	174.2

The financial liability is recorded within Other Liabilities on the Consolidated Balance Sheets. The following table presents the future minimum rental payments for this financial liability as of March 31, 2023:

Maturity of Financial Liability (in millions)	March 31, 2023
2023 (excluding three months ended March 31, 2023)	$	5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	$	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$	337.5

Lease, Cost

Right-of-use ("ROU") assets and lease liabilities for finance and operating leases as included in our Consolidated Balance Sheets are as follows (in millions):

	Financial Statement Classification	As of
Description		March 31, 2023		December 31, 2022
Lease Assets
Finance lease, right-of-use asset, net of accumulated amortization	Investment property, net	$	32.8	$	32.2
Operating lease, right-of-use asset, net	Other assets, net	$	186.8	$	189.4
Below market operating leases, net	Other assets, net	$	90.3	$	90.9
Lease Liabilities
Finance lease liabilities	Other liabilities	$	14.2	$	15.0
Operating lease liabilities	Other liabilities	$	160.0	$	160.3

Lease expense for finance and operating leases as included in our Consolidated Statements of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Finance Lease Expense
Amortization of ROU assets	Depreciation and amortization	$	0.7	$	—
Interest on lease liabilities	Interest expense	0.2		0.1
Operating lease cost	General and administrative expense, Property operating and maintenance, Depreciation and amortization	4.6		3.8
Variable lease cost	Property operating and maintenance	1.6		1.6
Short term lease cost	Property operating and maintenance	—		—
Total Lease Expense		$	7.1	$	5.5

Lease term, discount rates and additional information for finance and operating leases are as follows:

	As of
	March 31, 2023
Lease Term and Discount Rate
Weighted-average Remaining Lease Terms (years)
Finance lease	36.23
Operating lease	34.11
Weighted-average Discount Rate
Finance lease	3.38	%
Operating lease	3.80	%

	Three Months Ended
	March 31, 2023		March 31, 2022
Other Information (in millions)
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flow from operating leases	$	3.3	$	2.4
Financing cash flow from finance leases	5.9		0.1
Total Cash Paid On Lease Liabilities	$	9.2	$	2.5

The components of lease income for our operating leases, as included in our Consolidated Statement of Operations are as follows (in millions):

		Three Months Ended
Description	Financial Statement Classification	March 31, 2023		March 31, 2022
Operating Leases
Fixed lease income	Income from real property; Brokerage commissions and other revenue, net	$	7.9	$	7.1
Variable lease income(1)	Income from real property; Brokerage commissions and other revenue, net	$	1.5	$	0.7

(1)Consists of rent primarily based on a percentage of acquisition costs and net operating income.

Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity

uture minimum lease payments under non-cancellable leases with real estate operators where we are the lessor include the following as of March 31, 2023:

Maturity of Lease Payments (in millions)	Operating Leases
2023 (excluding the three months ended March 31, 2023)	$	21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$	118.0

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Basis of Presentation Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2023 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	3

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Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 441.4	$ 387.8
Total Revenues	651.2	548.5
Real property
Disaggregation of Revenue [Line Items]
Revenues	441.4	387.8
Home sales
Disaggregation of Revenue [Line Items]
Revenues	86.3	64.7
Service, retail, dining and entertainment
Disaggregation of Revenue [Line Items]
Revenues	102.6	81.2
Interest
Disaggregation of Revenue [Line Items]
Revenues	11.4	6.8
Brokerage commissions and other, net
Disaggregation of Revenue [Line Items]
Revenues	9.5	8.0
MH
Disaggregation of Revenue [Line Items]
Total Revenues	352.7	279.5
MH | Real property
Disaggregation of Revenue [Line Items]
Revenues	252.9	208.8
MH | Home sales
Disaggregation of Revenue [Line Items]
Revenues	79.9	58.0
MH | Service, retail, dining and entertainment
Disaggregation of Revenue [Line Items]
Revenues	5.4	2.3
MH | Interest
Disaggregation of Revenue [Line Items]
Revenues	10.3	6.2
MH | Brokerage commissions and other, net
Disaggregation of Revenue [Line Items]
Revenues	4.2	4.2
RV
Disaggregation of Revenue [Line Items]
Total Revenues	117.1	120.8
RV | Real property
Disaggregation of Revenue [Line Items]
Revenues	99.6	102.7
RV | Home sales
Disaggregation of Revenue [Line Items]
Revenues	6.4	6.7
RV | Service, retail, dining and entertainment
Disaggregation of Revenue [Line Items]
Revenues	5.8	7.3
RV | Interest
Disaggregation of Revenue [Line Items]
Revenues	0.9	0.6
RV | Brokerage commissions and other, net
Disaggregation of Revenue [Line Items]
Revenues	4.4	3.5
Marina
Disaggregation of Revenue [Line Items]
Total Revenues	181.4	148.2
Marina | Real property
Disaggregation of Revenue [Line Items]
Revenues	88.9	76.3
Marina | Home sales
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0
Marina | Service, retail, dining and entertainment
Disaggregation of Revenue [Line Items]
Revenues	91.4	71.6
Marina | Interest
Disaggregation of Revenue [Line Items]
Revenues	0.2	0.0
Marina | Brokerage commissions and other, net
Disaggregation of Revenue [Line Items]
Revenues	$ 0.9	$ 0.3

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Real Estate Acquisitions and Dispositions - Schedule of Business Acquisitions, by Acquisition (Details)		3 Months Ended
	Jan. 10, 2023 USD ($)	Mar. 31, 2023 USD ($) manufactured_home property development_site site shares	Dec. 31, 2022 development_site site
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces		92	24,347
Development Sites | development_site		72	2,655
Number Of Managed Properties | property		2
Number Of Properties | property		2
Jarrett Bay Boatworks
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			12
Development Sites | development_site			0
Park Holidays
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			15,906
Development Sites			608
Number of motor home communities (in communities) | manufactured_home		40
Bluewater
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			0
Development Sites			0
Park Leisure
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			2,914
Development Sites			123
Number of motor home communities (in communities) | manufactured_home		11
Callaly Leisure
Business Acquisition [Line Items]
Number of Development Sites | development_site		1
Fox Run
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces		68
Development Sites | development_site		72
Fox Run | Common OP units
Business Acquisition [Line Items]
Issuance of stock and units (in shares) | shares		31,289
Issuance of common stock and common OP units, net | $	$ 4,500,000	$ 4,500,000
Savannah Yacht Center
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces		24
Development Sites | development_site		0
Savannah Yacht Center | Series K preferred OP units
Business Acquisition [Line Items]
Issuance of stock and units (in shares) | shares		1,000,000
Issuance of common stock and common OP units, net | $		$ 100,000,000
Harrison Yacht Yard
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			21
Development Sites | development_site			0
Outer Banks
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			196
Development Sites | development_site			0
Tower Marine
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			446
Development Sites | development_site			0
Sandy Bay
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			730
Development Sites | development_site			456
Christies Parks
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			249
Development Sites			0
Bluewater
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			200
Development Sites			0
Bodmin Holiday Park
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			69
Development Sites			0
Kittery Point
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			62
Development Sites			0
Spanish Trails MHC
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			195
Development Sites			6
Pine Acre Trails
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			251
Development Sites			603
Bel Air Estates & Sunrise Estates
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			379
Development Sites			0
Montauk Yacht Club
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			232
Development Sites			0
Callaly Leisure
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			380
Development Sites			823
Newhaven
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			224
Development Sites			14
Bayfront Marina
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			583
Development Sites			0
Marina Bay Yacht Harbor
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			800
Development Sites			0
Jellystone Lincoln
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			267
Development Sites			0
Norway Commons
Business Acquisition [Line Items]
Sites, Wet Slips and Dry Storage Spaces			231
Development Sites			22

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Real Estate Acquisitions and Dispositions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 08, 2022	Dec. 31, 2022	Mar. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Investment in property		$ 2,213.9	$ 107.0	$ 2,213.9
Inventory of manufactured homes, boat parts and retail related items		45.0	0.2	45.0
Other assets, net		803.3	4.5	803.3
Total identifiable assets acquired net of liabilities assumed		2,185.9	111.7	2,185.9
Cash and escrow			7.2
Temporary and permanent equity			104.5	37.7
Total consideration			111.7	2,185.9
In-place leases, goodwill and other intangible assets		730.3		730.3
Cash and escrow				2,148.2
Secured Debt | Blue Water Loan
Business Acquisition [Line Items]
Long-term debt		12.9		12.9
Loan balance forgiven		7.9
Jarrett Bay Boatworks
Business Acquisition [Line Items]
Investment in property		21.3		21.3
Inventory of manufactured homes, boat parts and retail related items		1.4		1.4
Other assets, net		(1.0)		(1.0)
Total identifiable assets acquired net of liabilities assumed		71.2		71.2
Cash and escrow				68.4
Temporary and permanent equity				2.8
Total consideration				71.2
In-place leases, goodwill and other intangible assets		47.5		47.5
Park Holidays
Business Acquisition [Line Items]
Investment in property		1,254.7		1,254.7
Inventory of manufactured homes, boat parts and retail related items		29.5		29.5
Other assets, net		(624.9)		(624.9)
Total identifiable assets acquired net of liabilities assumed		1,233.8		1,233.8
Cash and escrow				1,199.9
Temporary and permanent equity	$ 33.9			33.9
Total consideration				1,233.8
In-place leases, goodwill and other intangible assets		574.5		574.5
Amortization of acquired intangible assets				$ 70.2
Weighted average amortization period of acquired intangible assets				14 years 7 months 6 days
Park Leisure
Business Acquisition [Line Items]
Investment in property		259.5		$ 259.5
Inventory of manufactured homes, boat parts and retail related items		0.7		0.7
Other assets, net		(111.9)		(111.9)
Total identifiable assets acquired net of liabilities assumed		225.8		225.8
Cash and escrow				225.8
Temporary and permanent equity				0.0
Total consideration				225.8
In-place leases, goodwill and other intangible assets		77.5		77.5
Montauk Yacht Club
Business Acquisition [Line Items]
Investment in property		163.6		163.6
Inventory of manufactured homes, boat parts and retail related items		0.3		0.3
Other assets, net		(0.3)		(0.3)
Total identifiable assets acquired net of liabilities assumed		190.5		190.5
Cash and escrow				190.5
Temporary and permanent equity				0.0
Total consideration				190.5
In-place leases, goodwill and other intangible assets		26.3		26.3
Fox Run
Business Acquisition [Line Items]
Investment in property			7.0
Inventory of manufactured homes, boat parts and retail related items			0.2
Other assets, net			0.0
Total identifiable assets acquired net of liabilities assumed			7.2
Cash and escrow			2.7
Temporary and permanent equity			4.5
Total consideration			7.2
Savannah Yacht Center
Business Acquisition [Line Items]
Investment in property			100.0
Inventory of manufactured homes, boat parts and retail related items			0.0
Other assets, net			4.5
Total identifiable assets acquired net of liabilities assumed			104.5
Cash and escrow			4.5
Temporary and permanent equity			100.0
Total consideration			$ 104.5
Harrison Yacht Yard
Business Acquisition [Line Items]
Investment in property		5.8		5.8
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		5.8		5.8
Cash and escrow				5.8
Temporary and permanent equity				0.0
Total consideration				5.8
In-place leases, goodwill and other intangible assets		0.0		0.0
Outer Banks
Business Acquisition [Line Items]
Investment in property		5.2		5.2
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.4		0.4
Total identifiable assets acquired net of liabilities assumed		4.8		4.8
Cash and escrow				4.8
Temporary and permanent equity				0.0
Total consideration				4.8
In-place leases, goodwill and other intangible assets		0.0		0.0
Tower Marine
Business Acquisition [Line Items]
Investment in property		20.2		20.2
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		2.1		2.1
Total identifiable assets acquired net of liabilities assumed		18.3		18.3
Cash and escrow				18.3
Temporary and permanent equity				0.0
Total consideration				18.3
In-place leases, goodwill and other intangible assets		0.2		0.2
Sandy Bay
Business Acquisition [Line Items]
Investment in property		247.9		247.9
Inventory of manufactured homes, boat parts and retail related items		9.4		9.4
Other assets, net		68.3		68.3
Total identifiable assets acquired net of liabilities assumed		191.1		191.1
Cash and escrow				191.1
Temporary and permanent equity				0.0
Total consideration				191.1
In-place leases, goodwill and other intangible assets		2.1		2.1
Christies Parks
Business Acquisition [Line Items]
Investment in property		10.1		10.1
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		2.1		2.1
Total identifiable assets acquired net of liabilities assumed		12.2		12.2
Cash and escrow				12.2
Temporary and permanent equity				0.0
Total consideration				12.2
In-place leases, goodwill and other intangible assets		0.0		0.0
Bluewater
Business Acquisition [Line Items]
Investment in property		25.3		25.3
Inventory of manufactured homes, boat parts and retail related items		1.3		1.3
Other assets, net		1.3		1.3
Total identifiable assets acquired net of liabilities assumed		28.0		28.0
Cash and escrow				28.0
Temporary and permanent equity				0.0
Total consideration				28.0
In-place leases, goodwill and other intangible assets		0.1		0.1
Bodmin Holiday Park
Business Acquisition [Line Items]
Investment in property		13.1		13.1
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		13.1		13.1
Cash and escrow				13.1
Temporary and permanent equity				0.0
Total consideration				13.1
In-place leases, goodwill and other intangible assets		0.0		0.0
Kittery Point
Business Acquisition [Line Items]
Investment in property		8.0		8.0
Inventory of manufactured homes, boat parts and retail related items		0.1		0.1
Other assets, net		0.1		0.1
Total identifiable assets acquired net of liabilities assumed		8.0		8.0
Cash and escrow				7.0
Temporary and permanent equity				1.0
Total consideration				8.0
In-place leases, goodwill and other intangible assets		0.0		0.0
Spanish Trails MHC
Business Acquisition [Line Items]
Investment in property		20.6		20.6
Inventory of manufactured homes, boat parts and retail related items		1.8		1.8
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		22.4		22.4
Cash and escrow				22.4
Temporary and permanent equity				0.0
Total consideration				22.4
In-place leases, goodwill and other intangible assets		0.0		0.0
Pine Acre Trails
Business Acquisition [Line Items]
Investment in property		29.7		29.7
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		29.7		29.7
Cash and escrow				29.7
Temporary and permanent equity				0.0
Total consideration				29.7
In-place leases, goodwill and other intangible assets		0.0		0.0
Bel Air Estates & Sunrise Estates
Business Acquisition [Line Items]
Investment in property		39.3		39.3
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		40.0		40.0
Cash and escrow				40.0
Temporary and permanent equity				0.0
Total consideration				40.0
In-place leases, goodwill and other intangible assets		0.7		0.7
Callaly Leisure
Business Acquisition [Line Items]
Investment in property		23.8		23.8
Inventory of manufactured homes, boat parts and retail related items		0.1		0.1
Other assets, net		0.3		0.3
Total identifiable assets acquired net of liabilities assumed		23.6		23.6
Cash and escrow				23.6
Temporary and permanent equity				0.0
Total consideration				23.6
In-place leases, goodwill and other intangible assets		0.0		0.0
Newhaven
Business Acquisition [Line Items]
Investment in property		6.2		6.2
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		6.2		6.2
Cash and escrow				6.2
Temporary and permanent equity				0.0
Total consideration				6.2
In-place leases, goodwill and other intangible assets		0.0		0.0
Bayfront Marina
Business Acquisition [Line Items]
Investment in property		11.3		11.3
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.5		0.5
Total identifiable assets acquired net of liabilities assumed		11.7		11.7
Cash and escrow				11.7
Temporary and permanent equity				0.0
Total consideration				11.7
In-place leases, goodwill and other intangible assets		0.9		0.9
Marina Bay Yacht Harbor
Business Acquisition [Line Items]
Investment in property		16.2		16.2
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		0.7		0.7
Total identifiable assets acquired net of liabilities assumed		15.7		15.7
Cash and escrow				15.7
Temporary and permanent equity				0.0
Total consideration				15.7
In-place leases, goodwill and other intangible assets		0.2		0.2
Jellystone Lincoln
Business Acquisition [Line Items]
Investment in property		17.0		17.0
Inventory of manufactured homes, boat parts and retail related items		0.0		0.0
Other assets, net		1.2		1.2
Total identifiable assets acquired net of liabilities assumed		18.2		18.2
Cash and escrow				18.2
Temporary and permanent equity				0.0
Total consideration		17.0		18.2
In-place leases, goodwill and other intangible assets		0.0		0.0
Cash consideration		5.0
Acquisition price		3.7
Vacation rental unit consideration		0.4
Norway Commons
Business Acquisition [Line Items]
Investment in property		15.1		15.1
Inventory of manufactured homes, boat parts and retail related items		0.4		0.4
Other assets, net		0.0		0.0
Total identifiable assets acquired net of liabilities assumed		15.8		15.8
Cash and escrow				15.8
Temporary and permanent equity				0.0
Total consideration				15.8
In-place leases, goodwill and other intangible assets		0.3		0.3
Jarrett Bay Bluewater Yacht Sales
Business Acquisition [Line Items]
Investment in property		0.1		0.1
Other assets, net		0.4		0.4
In-place leases, goodwill and other intangible assets		$ 17.6		$ 17.6

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Real Estate Acquisitions and Dispositions - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Feb. 23, 2023 USD ($) property	Mar. 31, 2023 USD ($) development_site site	Sep. 30, 2022 USD ($) development_site	Mar. 31, 2022 USD ($) development_site	Dec. 31, 2022 USD ($) development_site site landParcel
Business Acquisition [Line Items]
Capitalized transaction costs		$ 2.6			$ 19.2
Business combinations		2.8		$ 0.5
Number of land parcels acquired | landParcel					6
Aggregate purchase price					$ 26.2
Gain / (loss) on dispositions of properties		$ (1.6)		$ 13.4
Sites, Wet Slips and Dry Storage Spaces | site		92			24,347
Notes receivable from real estate developers and operators
Business Acquisition [Line Items]
Weighted average interest rate		8.50%			7.80%
UNITED STATES
Business Acquisition [Line Items]
Number of land parcels acquired | development_site		3
Aggregate purchase price		$ 34.9
Park Holidays
Business Acquisition [Line Items]
Business combinations		2.8
Sites, Wet Slips and Dry Storage Spaces | site					15,906
Marina
Business Acquisition [Line Items]
Number of land parcels acquired | development_site					2
Aggregate purchase price					$ 13.9
Southern Pines
Business Acquisition [Line Items]
Number of communities sold | development_site			2
Gain / (loss) on dispositions of properties			$ 13.3
Proceeds related to disposition of properties			$ 29.5
Country Squire
Business Acquisition [Line Items]
Number of communities sold | development_site			1
Gain / (loss) on dispositions of properties			$ 13.3
Sites, Wet Slips and Dry Storage Spaces | development_site				323
Proceeds related to disposition of properties			$ 29.5
New Ranch
Business Acquisition [Line Items]
Number of communities sold | development_site			2
Gain / (loss) on dispositions of properties			$ 13.3
Proceeds related to disposition of properties			29.5
The Sands RV & Golf Course
Business Acquisition [Line Items]
Gain / (loss) on dispositions of properties			$ 0.8
Sites, Wet Slips and Dry Storage Spaces | development_site			514
Proceeds related to disposition of properties			$ 15.0
UK Non-Operating Properties | Notes receivable from real estate developers and operators
Business Acquisition [Line Items]
Weighted average interest rate	11.90%
UK Non-Operating Properties | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Number of communities sold | property	2
Consideration received	$ 111.5
Note receivable	108.8
UK Non-Operating Properties | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Gain / (loss) on disposition of properties
Business Acquisition [Line Items]
Gain / (loss) on dispositions of properties		1.6
Release of foreign currency translation losses		$ 11.9
UK MH Operating Community
Business Acquisition [Line Items]
Consideration received	$ 240.0
UK MH Operating Community | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Number of sites sold | development_site		730
UK MH Operating Community | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Other Liabilities
Business Acquisition [Line Items]
Liabilities held for sale		$ 64.0
UK MH Operating Community | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Other Assets [Member]
Business Acquisition [Line Items]
Assets held for sale		$ 262.2
Cabrillo Isle and Emerald Coast
Business Acquisition [Line Items]
Business combinations					$ 24.7

XML

Real Estate Acquisitions and Dispositions - Pro Forma (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Business Acquisition [Line Items]
Total Revenues	$ 651.2	$ 548.5
Net income	$ (30.1)	$ 0.7
Total revenues			$ 3,091.3
Net income attributable to SUI common shareholders			$ 241.2
Net income per share attributable to SUI common stockholders - basic (in dollars per share)			$ 1.99
Net income per share attributable to SUI common stockholders - diluted (in dollars per share)			$ 1.99
Park Holidays, Park Leisure, Jarrett Bay, and Montauk Yacht Club
Business Acquisition [Line Items]
Total Revenues			$ 353.6
Net income			$ 13.8

XML

Notes and Other Receivables - Schedule of notes and other receivables (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 716.7	$ 617.3
Installment notes receivable on manufactured homes, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	62.2	65.9
Notes receivable from real estate developers and operators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	435.0	305.2
Other receivables, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	219.5	246.2
Total Notes and Other Receivables, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 716.7	$ 617.3

XML

Notes And Other Receivables - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 716.7	$ 617.3
Undrawn funds	41.3
Installment notes receivable on manufactured homes, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 62.2	$ 65.9
Weighted average interest rate	7.60%	7.60%
Maturity	13 years 7 months 6 days	13 years 9 months 18 days
Installment notes receivable on manufactured homes, net | Fair Value, Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value adjustments	$ 3.1
Other receivables, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	219.5	$ 246.2
Fair value adjustments		(1.4)
Notes receivable from real estate developers and operators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	435.0	305.2
Notes due from Real Estate Operators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 341.1	$ 217.6
Weighted average interest rate	11.60%	15.30%
Maturity	2 months 12 days	1 month 6 days
Notes receivable from real estate developers and operators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Notes and Other Receivables, net	$ 93.9	$ 87.6
Weighted average interest rate	8.50%	7.80%
Maturity	2 years 4 months 24 days	2 years 3 months 18 days

XML

Notes and Other Receivables - Schedule of installment notes receivable (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Jan. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Insurance receivables	$ 74.9	$ 78.5
Marina customers for storage, service and lease payments, net	46.4	40.0
Home sale proceeds	31.8	28.9
MH and annual RV residents for rent, utility charges, fees and other pass-through charges, net	24.2	61.5
Other receivables	219.5	246.2
Allowance for rent, water, sewer usage receivables	$ 4.9	5.9
Draw down period	3 years
Total Notes and Other Receivables, net	$ 716.7	$ 617.3
RezPlot
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ownership percentage	49.10%	48.90%
Principal Amount	$ 10.0		$ 5.0
Interest Rate	3.00%
Total Notes and Other Receivables, net	$ 12.3	$ 12.7
Marina
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for rent, water, sewer usage receivables	2.4	2.2
Total Notes and Other Receivables, net	54.6	45.6
Installment notes receivable on manufactured homes, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other receivables	42.2	37.3
Total Notes and Other Receivables, net	$ 62.2	$ 65.9

XML

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,018.4
Currency Translation Adjustment	12.2
Other	62.0
Goodwill, ending balance	1,092.6
MH
Goodwill [Roll Forward]
Goodwill, beginning balance	467.4
Currency Translation Adjustment	12.2
Other	62.0
Goodwill, ending balance	541.6
RV
Goodwill [Roll Forward]
Goodwill, beginning balance	9.5
Currency Translation Adjustment	0.0
Other	0.0
Goodwill, ending balance	9.5
Marina
Goodwill [Roll Forward]
Goodwill, beginning balance	541.5
Currency Translation Adjustment	0.0
Other	0.0
Goodwill, ending balance	$ 541.5

XML

Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 437.3	$ 437.2
Accumulated Amortization	(188.1)	(178.6)
Total indefinite-lived assets	143.5	143.4
Total	$ 580.8	580.6
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived assets	$ 141.0	140.9
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived assets	2.5	2.5
In-place leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	166.0	165.7
Accumulated Amortization	$ (139.0)	(135.4)
In-place leases | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 months
In-place leases | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	13 years
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Gross Carrying Amount	$ 10.5	10.5
Accumulated Amortization	(4.5)	(4.1)
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	81.0	81.2
Accumulated Amortization	$ (6.8)	(5.5)
Trademarks and trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 131.5	131.5
Accumulated Amortization	$ (27.8)	(24.7)
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	17 years
Franchise agreements and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 48.3	48.3
Accumulated Amortization	$ (10.0)	$ (8.9)
Franchise agreements and other intangible assets | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Franchise agreements and other intangible assets | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	27 years

XML

Goodwill and Other Intangible Assets - Schedule of Intangible Asset Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	$ 9.7	$ 8.7
In-place leases
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	3.6	4.6
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	0.5	0.5
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	1.5	0.2
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	3.2	2.8
Franchise agreements and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Other Intangible Asset Amortization Expense	$ 0.9	$ 0.6

XML

Goodwill and Other Intangible Assets- Intangibles Future Amortization Expense (Details) $ in Millions	Mar. 31, 2023 USD ($)
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	$ 25.7
2024	30.4
2025	29.3
2026	23.9
2027	22.0
In-place leases
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	7.0
2024	7.1
2025	6.2
2026	3.5
2027	2.0
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	1.6
2024	2.1
2025	2.1
2026	0.1
2027	0.0
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	4.6
2024	5.2
2025	5.2
2026	5.2
2027	5.2
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	9.5
2024	12.7
2025	12.7
2026	12.2
2027	12.2
Franchise agreements and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Remainder 2023	3.0
2024	3.3
2025	3.1
2026	2.9
2027	$ 2.6

XML

Investment in Nonconsolidated Affiliates - Narrative (Details)	Mar. 31, 2023	Dec. 31, 2022
RezPlot
Schedule of Equity Method Investments [Line Items]
Ownership percentage	49.10%	48.90%
Sungenia JV
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
GTSC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	40.00%	40.00%
SV Lift
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%

XML

Investment in Nonconsolidated Affiliates - Investment Balance (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investment	$ 88.1		$ 101.3
Total Income / (Loss) from Nonconsolidated Affiliates	(0.2)	$ 0.9
RezPlot
Schedule of Equity Method Investments [Line Items]
Investment	0.0		0.0
Total Income / (Loss) from Nonconsolidated Affiliates	(1.5)	(0.7)
Sungenia JV
Schedule of Equity Method Investments [Line Items]
Investment	45.1		44.5	$ 36.2
Total Income / (Loss) from Nonconsolidated Affiliates	0.6	0.6	2.2
Cumulative translation adjustment	0.0		(3.0)
Contributions	0.0		9.1
GTSC
Schedule of Equity Method Investments [Line Items]
Investment	40.8		54.5	$ 35.7
Total Income / (Loss) from Nonconsolidated Affiliates	1.0	1.2	5.9
Contributions	2.2		37.4
Distributions	(12.4)		(22.5)
Fair value adjustment	(4.5)		(2.0)
SV Lift
Schedule of Equity Method Investments [Line Items]
Investment	2.2		$ 2.3
Total Income / (Loss) from Nonconsolidated Affiliates	$ (0.3)	$ (0.2)

XML

Consolidated Variable Interest Entities - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Investment property, net	$ 13,850.8	$ 13,971.0
Cash, cash equivalents and restricted cash	74.8	90.4	$ 102.6	$ 78.2
Other intangible assets, net	392.7	402.0
Other assets, net	898.2	655.1
Total Assets	17,363.8	17,084.2
Secured debt	3,386.4	3,217.8
Advanced reservation deposits and rent	433.8	352.1
Accrued expenses and accounts payable	340.9	396.3
Other liabilities	940.1	935.9
Total Liabilities	9,294.8	8,992.8
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Investment property, net	782.3	739.7
Cash, cash equivalents and restricted cash	11.0	14.1
Other intangible assets, net	12.7	13.0
Other assets, net	5.7	10.5
Total Assets	811.7	777.3
Secured debt	22.0	22.2
Unsecured debt	35.2	35.2
Advanced reservation deposits and rent	34.1	13.8
Accrued expenses and accounts payable	20.6	11.8
Other liabilities	1.2	1.4
Total Liabilities	113.1	84.4
Temporary equity	39.0	41.3
Total Liabilities and Other Equity	$ 152.1	$ 125.7

XML

Consolidated Variable Interest Entities - Narrative (Details)	Mar. 31, 2023 Rate	Dec. 31, 2022 Rate
Disclosure of Variable Interest Entities [Abstract]
VIE as a percentage of consolidated assets	4.70%	4.50%
VIE as a percentage of consolidated liabilities	1.20%	0.90%
VIE as a Percentage of total equity	1.00%	1.00%

XML

Debt and Line of Credit - Schedule of Debt (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Secured debt	$ 3,386,400,000	$ 3,217,800,000
Weighted Average Years to Maturity	7 years 4 months 24 days	7 years 4 months 24 days
Weighted Average Interest Rates	3.908%	3.746%
Unsecured debt	$ 4,075,600,000	$ 3,979,400,000
Total debt	7,462,000,000	7,197,200,000
Net debt discount (premium)		100,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit and other	1,838,100,000	2,130,600,000
Deferred financing costs	$ 2,700,000	$ 3,000,000
Secured Debt
Debt Instrument [Line Items]
Weighted Average Years to Maturity	9 years 9 months 18 days	10 years 2 months 12 days
Weighted Average Interest Rates	3.811%	3.723%
Deferred financing costs	$ 16,200,000	$ 14,600,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Weighted Average Years to Maturity	8 years 2 months 12 days	8 years 1 month 6 days
Weighted Average Interest Rates	3.375%	2.90%
Unsecured debt	$ 2,175,600,000	$ 1,779,600,000
Net debt discount (premium)	7,000,000	6,100,000
Deferred financing costs	$ 17,400,000	$ 14,300,000
Line of Credit and Other Debt | Revolving Credit Facility
Debt Instrument [Line Items]
Weighted Average Years to Maturity	2 years 4 months 24 days	2 years 9 months 18 days
Weighted Average Interest Rates	4.638%	4.417%
Preferred equity - Sun NG Resorts - mandatorily redeemable
Debt Instrument [Line Items]
Weighted Average Years to Maturity	1 year 6 months	1 year 9 months 18 days
Weighted Average Interest Rates	6.00%	6.00%
Preferred OP units - mandatorily redeemable	$ 35,200,000	$ 35,200,000
Preferred OP units - mandatorily redeemable
Debt Instrument [Line Items]
Weighted Average Years to Maturity	9 months 18 days	3 years 1 month 6 days
Weighted Average Interest Rates	6.50%	5.921%
Preferred OP units - mandatorily redeemable	$ 26,700,000	$ 34,000,000.0
Debt Securities
Debt Instrument [Line Items]
Net debt discount (premium)	$ 100,000

XML

Debt and Line of Credit - Schedule of Secured Debt (Details)	3 Months Ended
	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($) loans Rate	Jun. 30, 2022 USD ($) Rate	Mar. 31, 2022 USD ($)
Debt Instrument [Line Items]
Loss on Extinguishment of Debt	$ 0			$ (300,000)
Collateralized Term Loan 1
Debt Instrument [Line Items]
Number of loans | loans		17
Number of secured properties		35
Secured Debt
Debt Instrument [Line Items]
Repayment Amount		$ 318,000,000.0
Fixed Interest Rate | Rate		4.81%
Loss on Extinguishment of Debt		$ 4,000,000.0
Secured Debt | Matures on October 1, 2022 3.89% Interest Rate
Debt Instrument [Line Items]
Repayment Amount			$ 15,800,000
Fixed Interest Rate | Rate			3.89%
Loss on Extinguishment of Debt			$ 0

XML

Debt and Line of Credit - Schedule of Mortgage Loans (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) loans property Rate	Sep. 30, 2022 USD ($) Rate	Dec. 31, 2022 USD ($) loans Rate
Debt Instrument [Line Items]
Loan Amount	$ 3,400.0
Term (in years)		25 years
Construction loan		$ 20.6
Minimum
Debt Instrument [Line Items]
Term (in years)	7 years		4 years
Maximum
Debt Instrument [Line Items]
Term (in years)	10 years		7 years
Secured Debt
Debt Instrument [Line Items]
Loan Amount		$ 3.4
Interest Rate | Rate		3.65%
Debt Securities
Debt Instrument [Line Items]
Loan Amount			$ 226.0
Term (in years)		25 years
Collateralized Mortgage Backed Securities
Debt Instrument [Line Items]
Number of properties jointly secured | property	1
Mortgage Term Loan Maturing February 2026
Debt Instrument [Line Items]
Loan Amount	$ 85.0
Number of loans | loans	5
Mortgage Term Loan Maturing February 2026 | Secured Debt
Debt Instrument [Line Items]
Term (in years)	3 years
Interest Rate | Rate	5.00%
Mortgage Term Loans Maturing in 2030 through 2033
Debt Instrument [Line Items]
Number of loans | loans	22
Mortgage Term Loans Maturing in 2030 through 2033 | Secured Debt
Debt Instrument [Line Items]
Interest Rate | Rate	5.72%
Mortgage Term Loans Maturing in 2030 through 2033 | Debt Securities
Debt Instrument [Line Items]
Loan Amount	$ 99.1
Mortgage Term Loans
Debt Instrument [Line Items]
Number of loans | loans			18
Mortgage Term Loans | Secured Debt
Debt Instrument [Line Items]
Interest Rate | Rate			4.50%
Mortgage Term Loans | Debt Securities
Debt Instrument [Line Items]
Interest Rate | Rate		3.65%

XML

Debt and Line of Credit- Narrative (Details) $ / shares in Units, £ in Millions		1 Months Ended		3 Months Ended				12 Months Ended
	Apr. 07, 2022 USD ($) Rate	Oct. 31, 2019 USD ($) Rate	Jun. 30, 2018 USD ($)	Mar. 31, 2023 USD ($) property site shares $ / shares Rate	Sep. 30, 2022	Mar. 31, 2022 USD ($)	Mar. 31, 2020 shares	Dec. 31, 2022 USD ($) site Rate	Mar. 31, 2022 GBP (£)	Jun. 14, 2021 USD ($)
Debt Instrument [Line Items]
Loan Amount				$ 3,400,000,000
Sites, Wet Slips and Dry Storage Spaces | site				92				24,347
Loss on extinguishment of debt				$ 0		$ 300,000
Term (in years)					25 years
Margin adjustments | Rate				0.01%
Preferred rate of return			6.00%
Convertible units to shares (in shares) | shares				988,819
Average closing price of units (in dollars per share)				$ 11,000,000.0		16,400,000
Minimum
Debt Instrument [Line Items]
Term (in years)				7 years				4 years
Maximum
Debt Instrument [Line Items]
Term (in years)				10 years				7 years
Revolving Credit Facility
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 0
Line of credit and other				1,838,100,000				$ 2,130,600,000
Long-term debt				$ 1,100,000,000				1,100,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity	$ 4,200,000,000
Line of credit, additional borrowing capacity	$ 800,000,000
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Basis points | Rate	0.725%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Basis points | Rate	1.60%
Collateralized Mortgage Backed Securities
Debt Instrument [Line Items]
Number of properties jointly secured | property				1
Net book value				$ 2,700,000,000
Revolving Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit and other				$ 741,600,000				1,100,000,000
Revolving Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, additional borrowing capacity										$ 1,000,000,000
Current borrowing capacity	$ 3,050,000,000.00									$ 2,000,000,000
Basis points | Rate				0.85%
Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity				$ 500,000,000
Line of credit and other		$ 58,000,000
Term (in years)		4 years
Term Loan | Unsecured Term Loan Facility
Debt Instrument [Line Items]
Long-term debt				$ 16,200,000				$ 19,800,000
Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity	$ 1,150,000,000
Basis points | Rate				0.95%
Term Loan Adjustment | Revolving Credit Facility
Debt Instrument [Line Items]
Basis points | Rate				0.04%				0.01%
Line of Credit and Other Debt
Debt Instrument [Line Items]
Outstanding letters of credit				$ 4,800,000				$ 2,300,000
Line of Credit and Other Debt | Term Loan | Eurodollar
Debt Instrument [Line Items]
Basis points				0.95%
Line of Credit and Other Debt | Term Loan | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis points | Rate				0.80%
Fixed Interest Rate | Rate		1.20%
Line of Credit and Other Debt | Term Loan | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis points | Rate				1.60%
Fixed Interest Rate | Rate		2.05%
Bridge Loan
Debt Instrument [Line Items]
Loss on extinguishment of debt								(300,000)
Principal Amount						$ 1,200,000,000			£ 950.0
Preferred equity - Sun NG Resorts - mandatorily redeemable
Debt Instrument [Line Items]
Mandatorily redeemable preferred equity			$ 35,300,000
Term			7 years
Preferred OP units - mandatorily redeemable				$ 35,200,000				35,200,000
Preferred OP units - mandatorily redeemable
Debt Instrument [Line Items]
Preferred OP units - mandatorily redeemable				$ 26,700,000				34,000,000.0
Convertible units to shares (in shares) | shares							270,000
Preferred distribution rate | Rate				6.50%
Preferred OP units - mandatorily redeemable | Convertible debt - Aspen Preferred OP Units January 2024 [Member]
Debt Instrument [Line Items]
Principal Amount				$ 26,700,000				$ 34,000,000
Convertible units to shares (in shares) | shares				320,699
Average closing price of shares (in dollars per share) | $ / shares				$ 68.00
Shares converted (in shares) | shares				0.397
Average closing price of units (in dollars per share)				$ 27.00
Percentage of overage closing price | Rate				25.00%
Preferred distribution rate | Rate				3.80%
Properties Securing Debt | Collateralized Mortgage Backed Securities
Debt Instrument [Line Items]
Number of properties jointly secured | property				154
Sites, Wet Slips and Dry Storage Spaces | site				61,624

XML

Debt and Line of Credit - Schedule of Unsecured Debt (Details) - USD ($)	1 Months Ended
	Jan. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Apr. 15, 2022	Oct. 05, 2021
Debt Instrument [Line Items]
Unsecured debt		$ 4,075,600,000	$ 3,979,400,000
Senior Unsecured Notes - January 2033 Maturity
Debt Instrument [Line Items]
Interest Rate	5.70%
Principal Amount	$ 400,000,000
Unsecured debt		395,400,000
Net proceeds from offering	$ 395,300,000
Senior Unsecured Notes - April 2032 Maturity
Debt Instrument [Line Items]
Interest Rate				4.20%
Principal Amount				$ 600,000,000.0
Unsecured debt		592,000,000.0	591,800,000
Senior Unsecured Notes - November 2028 Maturity
Debt Instrument [Line Items]
Interest Rate					2.30%
Principal Amount					$ 450,000,000.0
Unsecured debt		446,300,000	446,200,000
Senior Unsecured Notes - July 2031 Maturity - First Tranche
Debt Instrument [Line Items]
Interest Rate					2.70%
Principal Amount					$ 750,000,000.0
Unsecured debt		741,900,000	741,600,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Principal Amount		2,200,000,000
Unsecured debt		$ 2,175,600,000	$ 1,779,600,000

XML

Equity and Temporary Equity - Schedule of Redeemable Preferred Units (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)
Class of Stock [Line Items]
Issue price (in dollars per share) | $ / shares	$ 100.00
Series D preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	488,958
Exchange rate	0.8000
Annual distribution rate	$ 0.040
Redeemable preferred stock	$ 47,700,000	$ 48,100,000
Series F preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	90,000
Exchange rate	0.6250
Annual distribution rate	$ 0.030
Redeemable preferred stock	$ 8,700,000	8,700,000
Series G preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	239,710
Exchange rate	0.6452
Annual distribution rate	$ 0.032
Redeemable preferred stock	$ 24,000,000.0	24,400,000
Series H preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	581,342
Exchange rate	0.6098
Annual distribution rate	$ 0.030
Redeemable preferred stock	$ 56,300,000	56,700,000
Series J preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	239,000
Exchange rate	0.6061
Annual distribution rate	$ 0.0285
Redeemable preferred stock	$ 23,300,000	23,600,000
Series K preferred OP units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	1,000,000
Exchange rate	0.5882
Annual distribution rate	$ 0.040
Redeemable preferred stock	$ 99,900,000	0
Redeemable Preferred OP Units
Class of Stock [Line Items]
OP units outstanding (in shares) | shares	2,639,010
Redeemable preferred stock	$ 259,900,000	$ 161,500,000

XML

Equity and Temporary Equity - Narrative (Details)					1 Months Ended		3 Months Ended					6 Months Ended	12 Months Ended
	Apr. 15, 2022 USD ($)	Apr. 08, 2022 USD ($) shares	Dec. 17, 2021 USD ($) Rate	Nov. 16, 2021 $ / shares USD ($) shares	Apr. 30, 2022 shares	Jun. 30, 2018 USD ($)	Mar. 31, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($) shares	Sep. 30, 2021 shares	Sep. 30, 2020 USD ($)	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Mar. 23, 2023 shares
Class of Stock [Line Items]
Issue price (in dollars per share) | $ / shares							$ 100.00
Shares availability for issuance (in shares) | shares							200,000,000
Common stock authorized (in shares) | shares							180,000,000						180,000,000.0
Preferred stock available for issuance (in shares) | shares							20,000,000
Preferred stock par value (in dollars per share) | $ / shares							$ 0.01
Common stock outstanding (in shares) | shares							124,421,717						124,000,000.0
Preferred stock outstanding (in shares) | shares							0
Forward sale agreements | $				2
Aggregate net proceeds received | $								$ 275,500,000	$ 229,500,000
Aggregate gross sales price | $			$ 1,250,000,000
Percentage of gross price per share of shares sold | Rate			2.00%
Temporary and permanent equity | $							$ 104,500,000						$ 37,700,000
Shares, Outstanding | shares							3,080,847
Park Holidays
Class of Stock [Line Items]
Shares issued (in shares) | shares		186,044
Temporary and permanent equity | $		$ 33,900,000											33,900,000
Public Offering
Class of Stock [Line Items]
underwritten registered public offering (in shares) | shares				4,025,000
Public offering price (in dollars per share) | $ / shares				$ 185.00
Issuance of stock and units (in shares) | shares					4,025,000
Aggregate net proceeds received | $	$ 705,400,000
December 2021 Sales Agreement
Class of Stock [Line Items]
underwritten registered public offering (in shares) | shares								15,000	290,600	600,503
Aggregate gross sales price | $			$ 160,600,000
Forward sales agreement | $								$ 2,600,000	$ 50,100,000	$ 107,900,000
Shares settled (in shares) | shares								1,526,212
June 2021 Sales Agreement
Class of Stock [Line Items]
underwritten registered public offering (in shares) | shares								620,109						1,820,109
Forward sales agreement | $														$ 356,500,000
Shares settled (in shares) | shares									1,200,000		620,109
NG Sun LLC
Class of Stock [Line Items]
Redeemable preferred stock | $							$ 27,700,000						31,100,000
NG Sun LLC | Sun NG RV Resorts
Class of Stock [Line Items]
Rate of return							5.00%
NG Sun LLC | Common Stock | Sun NG RV Resorts
Class of Stock [Line Items]
Value of interest purchased | $						$ 6,500,000
Sun NG RV Resorts | Common Stock
Class of Stock [Line Items]
Value of interest purchased | $												$ 3,000,000
Sun NG RV Resorts | Common Stock | Sun NG RV Resorts
Class of Stock [Line Items]
Value of interest purchased | $						$ 15,400,000
Contingent consideration earnout | $													38,300,000
Series K preferred OP units
Class of Stock [Line Items]
Units issued (in shares) | shares															1,000,000
Annual distribution rate | $							$ 0.040
OP units outstanding (in shares) | shares							1,000,000
Redeemable preferred stock | $							$ 99,900,000						$ 0
Series K preferred OP units | Minimum
Class of Stock [Line Items]
Units exchangeable (in dollars per share)							100.00
Series K preferred OP units | Maximum
Class of Stock [Line Items]
Units exchangeable (in dollars per share)							170.00
Preferred Stock | A-3 preferred OP units
Class of Stock [Line Items]
Shares, Outstanding | shares							40,268

XML

Equity and Temporary Equity - Schedule of Redeemable Equity Units (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Shares, Outstanding	3,080,847
Preferred Stock | Series E preferred OP units
Class of Stock [Line Items]
Shares, Outstanding	80,000
FPG Sun Moreno Valley 66 LLC
Class of Stock [Line Items]
Redeemable preferred stock	$ 0.1	$ 0.1
Solar Energy Project CA II LLC
Class of Stock [Line Items]
Redeemable preferred stock	4.3	4.2
Solar Energy Project LLC
Class of Stock [Line Items]
Redeemable preferred stock	2.0	1.9
Solar Energy Project III LLC
Class of Stock [Line Items]
Redeemable preferred stock	1.9	0.3
FPG Sun Menifee 80 LLC
Class of Stock [Line Items]
Redeemable preferred stock	0.1	0.1
NG Sun Whitewater LLC
Class of Stock [Line Items]
Redeemable preferred stock	2.5	3.2
NG Sun LLC
Class of Stock [Line Items]
Redeemable preferred stock	27.7	31.1
NG Sun Beaver Brook LLC
Class of Stock [Line Items]
Redeemable preferred stock	0.4	0.5
Total
Class of Stock [Line Items]
Redeemable preferred stock	$ 39.0	$ 41.4

XML

Equity and Temporary Equity - Schedule of Issuances (Details) - USD ($)		1 Months Ended	3 Months Ended
	Jan. 10, 2023	Feb. 28, 2022	Mar. 31, 2023	Dec. 31, 2022
Dividends Payable [Line Items]
Issue price (in dollars per share)			$ 100.00
Common and preferred OP units			$ 79,800,000	$ 78,700,000
Shares, Outstanding			3,080,847
Preferred OP Units, Issuance Price			$ 100.00
Class of Stock [Line Items]
Shares, Outstanding			3,080,847
Common OP units
Dividends Payable [Line Items]
Common and preferred OP units			$ 33,600,000	31,500,000
Shares, Outstanding			2,447,083
Class of Stock [Line Items]
Shares, Outstanding			2,447,083
Common OP units | Series A-1 preferred OP units
Dividends Payable [Line Items]
Conversion Rate			2.4390
Common OP units | Common OP units
Dividends Payable [Line Items]
Conversion Rate			1.0000
Preferred Stock | Series E preferred OP units
Dividends Payable [Line Items]
Annual distribution rate			5.50%
Conversion Rate			0.6897
Common and preferred OP units			$ 6,800,000	6,900,000
Shares, Outstanding			80,000
Class of Stock [Line Items]
Shares, Outstanding			80,000
Preferred Stock | Series C preferred OP units
Dividends Payable [Line Items]
Annual distribution rate			5.00%
Conversion Rate			1.1100
Common and preferred OP units			$ 23,100,000	23,600,000
Shares, Outstanding			305,948
Class of Stock [Line Items]
Shares, Outstanding			305,948
Preferred Stock | A-3 preferred OP units
Dividends Payable [Line Items]
Annual distribution rate			4.50%
Conversion Rate			1.8605
Common and preferred OP units			$ 2,700,000	2,700,000
Shares, Outstanding			40,268
Class of Stock [Line Items]
Shares, Outstanding			40,268
Preferred Stock | Series A-1 preferred OP units
Dividends Payable [Line Items]
Annual distribution rate			6.00%
Conversion Rate			2.4390
Common and preferred OP units			$ 13,600,000	$ 14,000,000.0
Shares, Outstanding			207,548
Class of Stock [Line Items]
Shares, Outstanding			207,548
Fox Run | Common OP units
Dividends Payable [Line Items]
Units issued (in shares)			31,289
Value at Issuance (in millions)	$ 4,500,000		$ 4,500,000
Jarrett Bay Boatworks | Common OP units
Dividends Payable [Line Items]
Units issued (in shares)		14,683
Value at Issuance (in millions)		$ 2,800,000

XML

Equity and Temporary Equity - Schedule of Conversions (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Conversion of Stock [Line Items]
Shares, Outstanding	3,080,847
Aspen preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	86,224	0
Common OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	2,910	1,260
Series A-1 preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	0	6,568
Series C preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	72	166
Series E preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	0	3,448
Series G preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	645	0
Series H preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	15	0
Series J preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	606	0
Preferred Stock | Aspen preferred OP units
Conversion of Stock [Line Items]
Conversion of OP units (in shares)	270,000	0
Preferred Stock | Series A-1 preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	2.4390
Shares, Outstanding	207,548
Preferred Stock | Series C preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	1.1100
Shares, Outstanding	305,948
Conversion of OP units (in shares)	65	150
Preferred Stock | Series E preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	0.6897
Shares, Outstanding	80,000
Conversion of OP units (in shares)	0	5,000
Preferred Stock | Series G preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	0.6452
Conversion of OP units (in shares)	1,000	0
Preferred Stock | Series H preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	0.6098
Conversion of OP units (in shares)	25	0
Preferred Stock | Series J preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	0.6061
Conversion of OP units (in shares)	1,000	0
Common OP units
Conversion of Stock [Line Items]
Shares, Outstanding	2,447,083
Common OP units | Common OP units
Conversion of Stock [Line Items]
Conversion Rate	1.0000
Conversion of OP units (in shares)	2,910	1,260
Common OP units | Series A-1 preferred OP units
Conversion of Stock [Line Items]
Conversion Rate	2.4390
Conversion of OP units (in shares)	0	2,694

XML

Equity and Temporary Equity - Schedule of Distributions (Details) - Common Stock, Restricted Stock, and Common OP Units $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares
Dividends Payable [Line Items]
Dividends per share (in dollars per share) | $ / shares	$ 0.93
Total Distribution (in Millions) | $	$ 118.0

XML

Share-Based Compensation - Narrative (Details)	3 Months Ended
	Mar. 31, 2023 numberOfPlans shares	Mar. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based compensation plans | numberOfPlans	2
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares) | shares	203,898	230,411
Time Based | Directors | Restricted Stock | 2004 Non-employee Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Time Based | Key Employees and Executive Officers | Restricted Stock | 2015 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Market Condition | Executive Officers | Restricted Stock | 2015 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

XML

Share-Based Compensation - Schedule of Grants (Details) - Restricted Stock - 2015 Equity Plan - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Time Based | Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	220,258	138,510
Grant date fair value per share (in dollars per share)	$ 137.16	$ 180.49
Time Based | Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	62,800	66,000
Grant date fair value per share (in dollars per share)	$ 144.88	$ 178.20
Time Based | Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	16,000	11,900
Grant date fair value per share (in dollars per share)	$ 148.12	$ 197.00
Market Condition | Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	82,200	91,500
Grant date fair value per share (in dollars per share)	$ 108.60	$ 124.88

XML

Share-Based Compensation - Schedule of Share-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-Based Payment Arrangement [Abstract]
Share-based compensation - expensed	$ 9.6	$ 9.7
Share-based compensation - capitalized	$ 0.7	$ 0.0

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Segment Reporting - Schedule of Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Operating revenues	$ 651.2	$ 548.5
Brokerage commissions and other, net	9.5	8.0
General and administrative expense	(63.9)	(55.7)
Catastrophic event-related charges, net	(1.0)	0.0
Loss on Extinguishment of Debt	0.0	(0.3)
Interest on mandatorily redeemable preferred OP units / equity	(1.0)	(1.0)
Loss on remeasurement of marketable securities	(19.9)	(34.5)
Loss on foreign currency exchanges	(2.7)	(2.2)
Gain / (loss) on dispositions of properties	(1.6)	13.4
Other expense, net	(1.0)	(0.6)
Gain / (loss) on remeasurement of notes receivable	(1.7)	0.2
Total Income / (Loss) from Nonconsolidated Affiliates	(0.2)	0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates	(4.5)	0.1
Deferred tax benefit	4.6	0.0
Net Income / (Loss)	(32.9)	1.5
Net income / (loss) attributable to SUI common shareholders	(30.1)	0.7
MH
Segment Reporting Information [Line Items]
Operating revenues	352.7	279.5
RV
Segment Reporting Information [Line Items]
Operating revenues	117.1	120.8
Marina
Segment Reporting Information [Line Items]
Operating revenues	181.4	148.2
Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	630.3	533.7
Operating expenses / Cost of sales	349.9	271.8
NOI	280.4	261.9
Operating Segments | MH
Segment Reporting Information [Line Items]
Operating revenues	338.2	269.1
Operating expenses / Cost of sales	162.0	107.4
NOI	176.2	161.7
Operating Segments | RV
Segment Reporting Information [Line Items]
Operating revenues	111.8	116.7
Operating expenses / Cost of sales	66.6	67.1
NOI	45.2	49.6
Operating Segments | Marina
Segment Reporting Information [Line Items]
Operating revenues	180.3	147.9
Operating expenses / Cost of sales	121.3	97.3
NOI	59.0	50.6
Segment Reconciling Items
Segment Reporting Information [Line Items]
Interest income	11.4	6.8
Brokerage commissions and other, net	9.5	8.0
General and administrative expense	(63.9)	(55.7)
Catastrophic event-related charges, net	(1.0)	0.0
Business combination expense, net	(2.8)	(0.5)
Depreciation and amortization	(158.0)	(148.5)
Loss on Extinguishment of Debt	0.0	(0.3)
Interest expense	(76.6)	(45.2)
Interest on mandatorily redeemable preferred OP units / equity	(1.0)	(1.0)
Loss on remeasurement of marketable securities	(19.9)	(34.5)
Loss on foreign currency exchanges	(2.7)	(2.2)
Gain / (loss) on dispositions of properties	(1.6)	13.4
Other expense, net	(1.0)	(0.6)
Gain / (loss) on remeasurement of notes receivable	(1.7)	0.2
Total Income / (Loss) from Nonconsolidated Affiliates	(0.2)	0.9
Gain / (loss) on remeasurement of investment in nonconsolidated affiliates	(4.5)	0.1
Current tax expense	(3.9)	(1.3)
Deferred tax benefit	4.6	0.0
Net Income / (Loss)	(32.9)	1.5
Less: Preferred return to preferred OP units / equity interests	2.4	3.0
Less: Loss attributable to noncontrolling interests	(5.2)	(2.2)
Net income / (loss) attributable to SUI common shareholders	$ (30.1)	$ 0.7

XML

Segment Reporting - Schedule of Identifiable Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Investment property, net	$ 13,850.8	$ 13,971.0
Cash, cash equivalents and restricted cash	74.8	90.4	$ 102.6	$ 78.2
Marketable securities	105.5	127.3
Inventory of manufactured homes	232.5	202.7
Total Notes and Other Receivables, net	716.7	617.3
Goodwill	1,092.6	1,018.4
Other intangible assets, net	392.7	402.0
Other assets, net	898.2	655.1
Total Assets	17,363.8	17,084.2
MH
Segment Reporting Information [Line Items]
Investment property, net	6,871.5	7,181.7
Cash, cash equivalents and restricted cash	38.1	49.4
Marketable securities	68.3	82.4
Inventory of manufactured homes	209.4	189.1
Total Notes and Other Receivables, net	559.4	475.2
Goodwill	541.6	467.4
Other intangible assets, net	95.1	97.9
Other assets, net	603.2	356.1
Total Assets	8,986.6	8,899.2
RV
Segment Reporting Information [Line Items]
Investment property, net	3,808.2	3,744.3
Cash, cash equivalents and restricted cash	22.2	30.3
Marketable securities	37.2	44.9
Inventory of manufactured homes	23.1	13.6
Total Notes and Other Receivables, net	102.7	96.5
Goodwill	9.5	9.5
Other intangible assets, net	31.2	32.6
Other assets, net	51.3	63.0
Total Assets	4,085.4	4,034.7
Marina
Segment Reporting Information [Line Items]
Investment property, net	3,171.1	3,045.0
Cash, cash equivalents and restricted cash	14.5	10.7
Marketable securities	0.0	0.0
Inventory of manufactured homes	0.0	0.0
Total Notes and Other Receivables, net	54.6	45.6
Goodwill	541.5	541.5
Other intangible assets, net	266.4	271.5
Other assets, net	243.7	236.0
Total Assets	$ 4,291.8	$ 4,150.3

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Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Percentage of gross income	95.00%
Percentage of REIT taxable income	90.00%
Net deferred tax liabilities	$ 230,400,000		$ 308,600,000
Valuation allowance	37,600,000		49,800,000
Deferred tax liabilities	268,000,000		$ 340,800,000
Unrecognized tax benefits	0	$ 0
Withholding taxes current tax expense	3,900,000	$ 1,300,000
Deferred tax benefit	$ 4,600,000

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Earnings Per Share - Schedule of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator
Net income / (loss) attributable to SUI common shareholders	$ (30.1)	$ 0.7
Less: allocation to restricted stock awards	(0.1)	0.0
Basic earnings - net income / (loss) attributable to common shareholders after allocation to restricted stock awards	(30.0)	0.7
Add: allocation to common and preferred OP units dilutive effect	(0.6)	0.0
Diluted earnings - net income / (loss) attributable to common shareholders after allocation to common and preferred OP units	$ (30.7)	$ 0.7
Denominator
Weighted average common shares outstanding (in shares)	123.3	115.3
Add: common shares dilutive effect: Forward Equity Offering (in shares)	0.0	0.2
Add: dilutive restricted stock (in shares)	0.4	0.4
Add: common and preferred OP units dilutive effect (in shares)	2.5	0.0
Diluted weighted average common shares and securities (in shares)	126.2	115.9
Basic earning / (loss) per share (in dollars per share)	$ (0.24)	$ 0.01
Diluted earning / (loss) per share (in dollars per share)	$ (0.24)	$ 0.01
Restricted Stock
Numerator
Add: allocation to restricted stock awards	$ (0.1)	$ 0.0

XML

Earnings Per Share - Schedule of Antidilutive Securities Excluded from EPS (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	4,262	7,101
Common OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	0	2,551
Series A-1 preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	208	272
A-3 preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	40	40
Aspen preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	989	1,284
Series C preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	306	306
Series D preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	489	489
Series E preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	80	85
Series F preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	90	90
Series G preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	240	241
Series H preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	581	581
Series I Preferred OP Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)		922
Series J preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	239	240
Series K preferred OP units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total securities (in shares)	1,000

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Derivative Financial Instruments - Narrative (Details) - Designated as Hedging Instrument - Cash Flow Hedging £ in Millions, $ in Millions		3 Months Ended
	Apr. 12, 2022	Mar. 31, 2023 USD ($) contract	Mar. 31, 2023 GBP (£) contract	Dec. 31, 2022 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Value of derivatives settled		$ 250.0
Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivatives held | contract		4	4
Number of derivatives entered into | contract		1
Aggregate notional value		$ 123.7	£ 100.0
Effective interest rate		4.808%	4.808%
Treasury Lock and Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification of derivatives		$ 13.4
Effective interest rate		5.50%	5.50%	5.70%
Net settlement payment received		$ 7.4
Forward Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivatives entered into | contract		1
Aggregate notional value		$ 50.0
Number of derivatives settled | contract		1	1
Value of derivatives settled		$ 50.0
Treasury Lock
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional value		$ 668.4		$ 733.6
Number of derivatives settled | contract		2	2
Value of derivatives settled		$ 100.0
Term of derivates	10 years	10 years

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Derivative Financial Instruments - Schedule of Fair Value of Derivatives (Details) - Designated as Hedging Instrument - Cash Flow Hedging - Treasury Lock - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Notional	$ 668.4	$ 733.6
Fair Value of Liabilities	0.0	0.0
Significant Other Observable Inputs (Level 2)
Derivative [Line Items]
Fair value of assets	$ 15.2	$ 32.0

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Derivative Financial Instruments - Schedule of Gains (Losses) on Derivatives (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Change in unrealized gain / (loss) on interest rate derivatives	$ (8.6)	$ 24.1
Gains / (losses) on derivative instruments reclassified form AOCI into earnings	2.3	(1.1)
Designated as Hedging Instrument | Cash Flow Hedging | Treasury Lock and Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Gains / (losses) on derivative instruments reclassified form AOCI into earnings	$ 2.3	$ (1.1)

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Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Carrying Value
Financial Liabilities
Secured debt	$ 3,386.4	$ 3,217.8
Senior unsecured notes	2,175.6	1,779.6
Line of credit and other unsecured debt	1,900.0	2,199.8
Total unsecured debt	4,075.6	3,979.4
Other financial liabilities (contingent consideration)	20.2	20.2
Total liabilities measured at fair value	7,482.2	7,217.4
Cash, cash equivalents and restricted cash	74.8	90.4	$ 102.6	$ 78.2
Total Notes and Other Receivables, net	716.7	617.3
Secured debt	3,386.4	3,217.8
Total unsecured debt	4,075.6	3,979.4
Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	62.2	65.9
Fair Value, Recurring | Carrying Value
Financial Assets
Cash, cash equivalents and restricted cash	74.8	90.4
Derivative assets	15.2	32.0
Total assets measured at fair value	692.7	620.8
Fair Value, Recurring | Carrying Value | Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	62.2	65.9
Fair Value, Recurring | Carrying Value | Notes receivable from real estate developers and operators
Financial Assets
Total Notes and Other Receivables, net	435.0	305.2
Fair Value, Recurring | Carrying Value | Marketable securities
Financial Assets
Marketable securities	105.5	127.3
Fair Value, Recurring | Estimate of Fair Value Measurement
Financial Assets
Cash, cash equivalents and restricted cash	74.8	90.4
Derivative assets	15.2	32.0
Total assets measured at fair value	692.7	620.8
Financial Liabilities
Secured debt	3,015.4	2,814.1
Senior unsecured notes	1,926.1	1,432.7
Line of credit and other unsecured debt	1,900.0	2,199.8
Total unsecured debt	3,826.1	3,632.5
Other financial liabilities (contingent consideration)	20.2	20.2
Total liabilities measured at fair value	6,861.7	6,466.8
Fair Value, Recurring | Estimate of Fair Value Measurement | Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	62.2	65.9
Fair Value, Recurring | Estimate of Fair Value Measurement | Notes receivable from real estate developers and operators
Financial Assets
Total Notes and Other Receivables, net	435.0	305.2
Fair Value, Recurring | Estimate of Fair Value Measurement | Marketable securities
Financial Assets
Marketable securities	105.5	127.3
Fair Value, Recurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Financial Assets
Cash, cash equivalents and restricted cash	74.8	90.4
Derivative assets	0.0	0.0
Total assets measured at fair value	180.3	217.7
Financial Liabilities
Secured debt	0.0	0.0
Senior unsecured notes	0.0	0.0
Line of credit and other unsecured debt	0.0	0.0
Total unsecured debt	0.0	0.0
Other financial liabilities (contingent consideration)	0.0	0.0
Total liabilities measured at fair value	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Notes receivable from real estate developers and operators
Financial Assets
Total Notes and Other Receivables, net	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Marketable securities
Financial Assets
Marketable securities	105.5	127.3
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Financial Assets
Cash, cash equivalents and restricted cash	0.0	0.0
Derivative assets	15.2	32.0
Total assets measured at fair value	15.2	32.0
Financial Liabilities
Secured debt	3,386.4	3,217.8
Senior unsecured notes	2,175.6	1,779.6
Line of credit and other unsecured debt	1,900.0	2,199.8
Total unsecured debt	4,075.6	3,979.4
Other financial liabilities (contingent consideration)	0.0	0.0
Total liabilities measured at fair value	7,462.0	7,197.2
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Notes receivable from real estate developers and operators
Financial Assets
Total Notes and Other Receivables, net	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Marketable securities
Financial Assets
Marketable securities	0.0	0.0
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Financial Assets
Cash, cash equivalents and restricted cash	0.0	0.0
Derivative assets	0.0	0.0
Total assets measured at fair value	497.2	371.1
Financial Liabilities
Secured debt	0.0	0.0
Senior unsecured notes	0.0	0.0
Line of credit and other unsecured debt	0.0	0.0
Total unsecured debt	0.0	0.0
Other financial liabilities (contingent consideration)	20.2	20.2
Total liabilities measured at fair value	20.2	20.2
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net
Financial Assets
Total Notes and Other Receivables, net	62.2	65.9
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators
Financial Assets
Total Notes and Other Receivables, net	435.0	305.2
Fair Value, Recurring | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Marketable securities
Financial Assets
Marketable securities	0.0	0.0
Fair Value, Recurring | Marketable securities
Financial Assets
Marketable securities	105.5	127.3		186.9
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net
Financial Assets
Total assets measured at fair value	62.2	65.9	77.2	79.1
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators
Financial Assets
Total assets measured at fair value	$ 435.0	$ 305.2	$ 304.4	$ 284.0

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Fair Value of Financial Instruments - Schedule of Marketable Securities (Details) - Fair Value, Recurring - Marketable securities - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 127.3	$ 186.9
Change in fair value measurement	(19.9)	(53.4)
Foreign currency translation adjustment	(1.9)	(7.7)
Dividend reinvestment, net of tax	0.0	1.5
Ending Balance	$ 105.5	$ 127.3

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Fair Value of Financial Instruments - Narrative (Details)		3 Months Ended
	Apr. 12, 2022	Mar. 31, 2023
Designated as Hedging Instrument | Cash Flow Hedging | Treasury Lock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term of derivates	10 years	10 years

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Fair Value of Financial Instruments - Schedule of Level 3 Instruments at Fair Value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Assets:
Foreign currency exchange gain / (losses)	$ (2.7)	$ (2.2)
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Contingent Consideration
Liabilities:
Beginning balance	20.2	20.2
Ending balance	20.2	20.2
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net
Assets:
Beginning balance	65.9	79.1
Foreign currency exchange gain / (losses)	0.0	0.0
Ending balance	62.2	77.2
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net | Realized gains / (losses)
Assets:
Changes to fair value	(1.7)	0.2
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net | Purchases and issuances
Assets:
Changes to fair value	0.1	0.9
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net | Sales and settlements
Assets:
Changes to fair value	(2.1)	(3.0)
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Installment notes receivable on manufactured homes, net | Dispositions of properties
Assets:
Changes to fair value	0.0	0.0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators
Assets:
Beginning balance	305.2	284.0
Foreign currency exchange gain / (losses)	8.5	(6.0)
Ending balance	435.0	304.4
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators | Realized gains / (losses)
Assets:
Changes to fair value	0.0	0.0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators | Purchases and issuances
Assets:
Changes to fair value	124.3	30.5
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators | Sales and settlements
Assets:
Changes to fair value	(3.0)	(4.1)
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Notes receivable from real estate developers and operators | Dispositions of properties
Assets:
Changes to fair value	0.0	0.0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Warrants
Assets:
Beginning balance	0.0	0.0
Foreign currency exchange gain / (losses)	0.0	0.0
Ending balance	0.0	0.6
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Warrants | Realized gains / (losses)
Assets:
Changes to fair value	(0.4)	(0.6)
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Warrants | Purchases and issuances
Assets:
Changes to fair value	0.4	1.2
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Warrants | Sales and settlements
Assets:
Changes to fair value	0.0	0.0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Warrants | Dispositions of properties
Assets:
Changes to fair value	$ 0.0	$ 0.0

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Commitments and Contingencies (Details)
$ in Millions

3 Months Ended

Mar. 31, 2023

USD ($)

Mar. 31, 2022

USD ($)

Dec. 31, 2022

USD ($)

Sep. 28, 2022

property

development_site

Loss Contingencies [Line Items]

Number of affected properties in Florida | property

3

Number of affected sites | development_site

2,500

Insurance recoveries received

$ 4.9

$ 0.0

Business Insurance Recoveries

The table below sets forth estimated insurance recoveries (in millions):

	Three Months Ended March 31, 2023
Total estimated insurance receivable - December 31, 2022	$	54.9
Change in estimated insurance recoveries	22.1
Advances from insurer	(13.5)
Total estimated insurance receivable - March 31, 2023	$	63.5

Commitments and Contingencies

16. Commitments and Contingencies

Legal Proceedings

We are involved in various legal proceedings arising in the ordinary course of business. All such proceedings, taken together, are not expected to have a material adverse impact on our results of operations or financial condition.

Catastrophic Event-Related Charges - Hurricane Ian

In September 2022, Hurricane Ian made landfall on Florida's western coast. The storm primarily affected three properties in the Fort Myers area, comprising approximately 2,500 sites. These properties sustained significant flooding and wind damage from the hurricane. At other affected MH and RV properties, most of the damage was limited to trees, roofs, fences, skirting and carports. At affected marina properties, docks, buildings, and landscaping sustained wind and water damage.

We maintain property, casualty, flood and business interruption insurance for our community portfolio, subject to customary deductibles and limits. The table below sets forth estimated insurance recoveries (in millions):

	Three Months Ended March 31, 2023
Total estimated insurance receivable - December 31, 2022	$	54.9
Change in estimated insurance recoveries	22.1
Advances from insurer	(13.5)
Total estimated insurance receivable - March 31, 2023	$	63.5

The foregoing estimates are based on current information available, and we continue to assess these estimates. Actual charges and, insurance recoveries could vary significantly from these estimates. Any changes to these estimates will be recognized in the period(s) in which they are determined.

Changes in estimated insurance recoveries related to Hurricane Ian during the three months ended March 31, 2023 were primarily the result of incremental costs that exceeded the applicable deductible.

Expected insurance recoveries for lost earnings and redevelopment costs greater than asset impairment charges for the three Fort Myers, Florida properties were excluded from our Consolidated Statements of Operations for the three months ended March 31, 2023. We are actively working with our insurer on the related claims. The three Fort Myers, Florida RV communities will require redevelopment, followed by a tenant lease-up period. As such, we currently cannot estimate a date when operating results will be restored to pre-hurricane levels. Our business interruption insurance policy provides for up to 60 months of coverage from the date of restoration.

Hurricane Ian

Loss Contingencies [Line Items]

Estimated insurance recoveries

$ 63.5

$ 54.9

Change in Estimated Insurance Recoveries

22.1

Insurance recoveries received

$ (13.5)

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Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Operating Leases
2023 (excluding three months ended March 31, 2023)	$ 10.2
2024	13.7
2025	13.2
2026	11.6
2027	9.7
Thereafter	240.6
Total Lease Payments	299.0
Less: Imputed interest	(139.0)
Present Value of Lease Liabilities	160.0	$ 160.3
Finance Leases
2023 (excluding three months ended March 31, 2023)	0.6
2024	4.6
2025	0.5
2026	0.5
2027	0.5
Thereafter	20.3
Total Lease Payments	27.0
Less: Imputed interest	(12.8)
Present Value of Lease Liabilities	14.2	$ 15.0
2023 (excluding three months ended March 31, 2023)	10.8
2024	18.3
2025	13.7
2026	12.1
2027	10.2
Thereafter	260.9
Total Lease Payments	326.0
Less: Imputed interest	(151.8)
Present Value of Lease Liabilities	$ 174.2

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Leases - Schedule of ROU Assets and Lease Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Leases [Abstract]
Finance lease, right-of-use asset, net of accumulated amortization	$ 32.8		$ 32.2
Operating lease, right-of-use asset, net	186.8		189.4
Below market operating leases, net	90.3		90.9
Finance lease liabilities	14.2		15.0
Operating lease liabilities	160.0		$ 160.3
Amortization of ROU assets	0.7	$ 0.0
Interest on lease liabilities	0.2	0.1
Operating lease cost	4.6	3.8
Variable lease cost	1.6	1.6
Short term lease cost	0.0	0.0
Total Lease Expense	$ 7.1	$ 5.5

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Leases - Schedule of Lease Term (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Weighted - average remaining lease term - finance leases	36 years 2 months 23 days
Weighted - average remaining lease term - operating leases	34 years 1 month 9 days
Weighted - average discount rate - finance leases	3.38%
Weighted - average discount rate - operating leases	3.80%
Operating cash flow from operating leases	$ 3.3	$ 2.4
Financing cash flow from finance leases	5.9	0.1
Total Cash Paid On Lease Liabilities	$ 9.2	$ 2.5

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Leases - Schedule of Future Lease Payments Under Non-Cancellable Leases (Details) $ in Millions	Mar. 31, 2023 USD ($)
Leases [Abstract]
2023 (excluding the three months ended March 31, 2023)	$ 21.6
2024	19.4
2025	10.9
2026	6.9
2027	6.1
Thereafter	53.1
Total Undiscounted Cash Flows	$ 118.0

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Leases - Schedule of Lease Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Fixed lease income	$ 7.9	$ 7.1
Variable lease income	$ 1.5	$ 0.7

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Leases - Narrative (Details) - UNITED KINGDOM - Park Holidays $ in Millions	Mar. 31, 2023 GBP (£) development_site	Mar. 31, 2023 USD ($) development_site
Lessee, Lease, Description [Line Items]
Number of ground leases | development_site	34	34
Lease repurchase amount | £	£ 1.00
Ground lease financial liability | $		$ 337.5

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Leases - Schedule of Future Minimum Rental Payments (Details) - UNITED KINGDOM - Park Holidays $ in Millions	Mar. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
2023 (excluding three months ended March 31, 2023)	$ 5.9
2024	11.3
2025	11.6
2026	11.7
2027	11.8
Thereafter	1,623.0
Total Payments	1,675.3
Less: Imputed interest	(1,337.8)
Present Value of Financial Liability	$ 337.5