10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2024

or

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

For the transition period from                      to                     .

Commission File Number: 001-32269

EXTRA SPACE STORAGE INC.

(Exact name of registrant as specified in its charter) 

Maryland	20-1076777
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2795 East Cottonwood Parkway, Suite 300

Salt Lake City, Utah 84121

(Address of principal executive offices)

Registrant’s telephone number, including area code: (801) 365-4600

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934

Title of each class	Trading symbol	Name of each exchange on which registered
Common Stock, $0.01 par value	EXR	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  x    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 such files).    Yes  x    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	☐

1

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  x

The number of shares outstanding of the registrant’s common stock, par value $0.01 per share, as of October 30, 2024, was 211,983,569.

2

EXTRA SPACE STORAGE INC.

TABLE OF CONTENTS

 

STATEMENT ON FORWARD-LOOKING INFORMATION	4
PART I. FINANCIAL INFORMATION	6
ITEM 1. FINANCIAL STATEMENTS (unaudited)	6
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	14
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	31
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	42
ITEM 4. CONTROLS AND PROCEDURES	42
PART II. OTHER INFORMATION	43
ITEM 1. LEGAL PROCEEDINGS	43
ITEM 1A. RISK FACTORS	43
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	43
ITEM 3. DEFAULTS UPON SENIOR SECURITIES	43
ITEM 4. MINE SAFETY DISCLOSURES	43
ITEM 5. OTHER INFORMATION	43
ITEM 6. EXHIBITS	44
SIGNATURES	47

3

STATEMENT ON FORWARD-LOOKING INFORMATION

Certain information set forth in this report contains “forward-looking statements” within the meaning of the federal securities laws. Forward-looking statements include statements concerning our plans, objectives, goals, strategies, future events, future revenues or performance, capital expenditures, financing needs, plans or intentions relating to acquisitions and other information that is not historical information. In some cases, forward-looking statements can be identified by terminology such as “believes,” “expects,” “estimates,” “may,” “will,” “should,” “anticipates” or “intends” or the negative of such terms or other comparable terminology, or by discussions of strategy. We may also make additional forward-looking statements from time to time. All such subsequent forward-looking statements, whether written or oral, by us or on our behalf, are also expressly qualified by these cautionary statements.

All forward-looking statements, including without limitation, management’s examination of historical operating trends and estimates of future earnings, are based upon our current expectations and various assumptions. Our expectations, beliefs and projections are expressed in good faith and we believe there is a reasonable basis for them, but there can be no assurance that management’s expectations, beliefs and projections will result or be achieved. All forward-looking statements apply only as of the date made. We undertake no obligation to publicly update or revise forward-looking statements which may be made to reflect events or circumstances after the date made or to reflect the occurrence of unanticipated events.

There are a number of risks and uncertainties that could cause our actual results to differ materially from the forward-looking statements contained in or contemplated by this report. Any forward-looking statements should be considered in light of the risks referenced in “Part II. Item 1A. Risk Factors” below and in “Part I. Item 1A. Risk Factors” included in our most recent Annual Report on Form 10-K. Such factors include, but are not limited to:

•adverse changes in general economic conditions, the real estate industry and the markets in which we operate;

•failure to realize the expected benefits of the acquisition of Life Storage, Inc. (“Life Storage”);

•the risk that Life Storage’s business will not be fully integrated successfully or that such integration may be more difficult, time-consuming or costly than expected;

•the uncertainty of expected future financial performance and results of the combined company following completion of the Life Storage merger;

•failure to close pending acquisitions and developments on expected terms, or at all;

•the effect of competition from new and existing stores or other storage alternatives, including increased or unanticipated competition for our properties, which could cause rents and occupancy rates to decline;

•potential liability for uninsured losses and environmental contamination;

•the impact of the regulatory environment as well as national, state, and local laws and regulations including, without limitation, those governing real estate investment trusts (“REITs”), tenant reinsurance and other aspects of our business, which could adversely affect our results;

•our ability to recover losses under our insurance policies;

•disruptions in credit and financial markets and resulting difficulties in raising capital or obtaining credit at reasonable rates or at all, which could impede our ability to grow;

•our reliance on information technologies, which are vulnerable to, among other things, attack from computer viruses and malware, hacking, cyberattacks and other unauthorized access or misuse, any of which could adversely affect our business and results;

•changes in global financial markets and increases in interest rates;

•availability of financing and capital, the levels of debt that we maintain and our credit ratings;

•risks associated with acquisitions, dispositions and development of properties, including increased development costs due to additional regulatory requirements related to climate change and other factors;

•reductions in asset valuations and related impairment charges;

•our lack of sole decision-making authority with respect to our joint venture investments;

•the effect of recent or future changes to U.S. tax laws;

•the failure to maintain our REIT status for U.S. federal income tax purposes;

•impacts from any outbreak of highly infectious or contagious diseases, including reduced demand for self-storage space and ancillary products and services such as tenant reinsurance, and potential decreases in occupancy and rental rates and staffing levels, which could adversely affect our results; and

•economic uncertainty due to the impact of natural disasters, war or terrorism, which could adversely affect our business plan.

4

The forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking into account all information currently available to us. These beliefs, assumptions and expectations are subject to risks and uncertainties and can change as a result of many possible events or factors, not all of which are known to us. If a change occurs, our business, financial condition, liquidity and results of operations may vary materially from those expressed in our forward-looking statements. You should carefully consider these risks before you make an investment decision with respect to our securities.

We disclaim any duty or obligation to update or revise any forward-looking statements set forth in this report to reflect new information, future events or otherwise.

5

PART I.     FINANCIAL INFORMATION

ITEM 1.    FINANCIAL STATEMENTS

Extra Space Storage Inc.

Condensed Consolidated Balance Sheets

(amounts in thousands, except share data)

 

	September 30, 2024		December 31, 2023
	(unaudited)
Assets:
Real estate assets, net	$	24,385,492	$	24,555,873
Real estate assets - operating lease right-of-use assets	694,001		227,241
Investments in unconsolidated real estate entities	1,060,213		1,071,617
Investments in debt securities and notes receivable	1,338,619		904,769
Cash and cash equivalents	88,931		99,062
Other assets, net	495,861		597,700
Total assets	$	28,063,117	$	27,456,262
Liabilities, Noncontrolling Interests and Equity:
Secured notes payable, net	$	1,011,705	$	1,273,549
Unsecured term loans, net	2,194,894		2,650,581
Unsecured senior notes, net	7,437,231		6,410,618
Revolving lines of credit	884,000		682,000
Operating lease liabilities	706,491		236,515
Cash distributions in unconsolidated real estate ventures	74,173		71,069
Accounts payable and accrued expenses	388,757		334,518
Other liabilities	407,183		383,463
Total liabilities	13,104,434		12,042,313
Commitments and contingencies
Noncontrolling Interests and Equity:
Extra Space Storage Inc. stockholders' equity:
Preferred stock, $0.01 par value, 50,000,000 shares authorized, no shares issued or outstanding	—		—
Common stock, $0.01 par value, 500,000,000 shares authorized, 211,981,742 and 211,278,803 shares issued and outstanding at September 30, 2024 and December 31, 2023, respectively	2,120		2,113
Additional paid-in capital	14,823,018		14,750,388
Accumulated other comprehensive income	3,340		17,435
Accumulated deficit	(817,865)		(379,015)
Total Extra Space Storage Inc. stockholders' equity	14,010,613		14,390,921
Noncontrolling interest represented by Preferred Operating Partnership units, net	191,306		222,360
Noncontrolling interests in Operating Partnership, net and other noncontrolling interests	756,764		800,668
Total noncontrolling interests and equity	14,958,683		15,413,949
Total liabilities, noncontrolling interests and equity	$	28,063,117	$	27,456,262

See accompanying notes to unaudited condensed consolidated financial statements.

6

Extra Space Storage Inc.

Condensed Consolidated Statements of Operations

(amounts in thousands, except share data)

(unaudited)

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Revenues:
Property rental	$	710,874	$	650,887	$	2,096,018	$	1,525,596
Tenant reinsurance	84,048		69,128		249,100		165,265
Management fees and other income	29,882		28,019		89,888		71,609
Total revenues	824,804		748,034		2,435,006		1,762,470
Expenses:
Property operations	209,035		185,194		610,455		416,997
Tenant reinsurance	17,510		19,130		55,646		37,701
Life Storage Merger transition costs	—		54,174		—		54,174
General and administrative	39,750		37,406		123,373		107,011
Depreciation and amortization	195,046		152,338		586,821		309,914
Total expenses	461,341		448,242		1,376,295		925,797
Loss on real estate assets held for sale	(8,961)		—		(63,620)		—
Impairment of Life Storage trade name	(51,763)		—		(51,763)		—
Income from operations	302,739		299,792		943,328		836,673
Interest expense	(142,855)		(122,899)		(412,875)		(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)		(8,228)		(32,563)		(8,228)
Interest income	34,947		22,092		89,746		62,607
Income before equity in earnings and dividend income from unconsolidated real estate entities and income tax expense	183,826		190,757		587,636		601,682
Equity in earnings and dividend income from unconsolidated real estate entities	16,246		15,043		48,508		38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	13,730		—		13,730		—
Income tax expense	(10,857)		(6,944)		(27,443)		(17,238)
Net income	202,945		198,856		622,431		623,046
Net income allocated to Preferred Operating Partnership noncontrolling interests	(1,932)		(2,253)		(6,073)		(6,761)
Net income allocated to Operating Partnership and other noncontrolling interests	(7,803)		(8,253)		(24,164)		(29,221)
Net income attributable to common stockholders	$	193,210	$	188,350	$	592,194	$	587,064
Earnings per common share
Basic	$	0.91	$	0.96	$	2.79	$	3.78
Diluted	$	0.91	$	0.96	$	2.79	$	3.78
Weighted average number of shares
Basic	211,698,436		195,324,444		211,522,578		155,112,071
Diluted	220,298,870		195,328,020		220,177,692		155,116,149
Cash dividends paid per common share	$	1.62	$	1.62	$	4.86	$	4.86

See accompanying notes to unaudited condensed consolidated financial statements.

7

Extra Space Storage Inc.

Condensed Consolidated Statements of Comprehensive Income

(amounts in thousands)

(unaudited)

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net income	$	202,945	$	198,856	$	622,431	$	623,046
Other comprehensive income:
Change in fair value of interest rate swaps	(24,887)		(2,264)		(14,691)		(4,175)
Total comprehensive income	178,058		196,592		607,740		618,871
Less: comprehensive income attributable to noncontrolling interests	8,749		10,395		29,641		35,693
Comprehensive income attributable to common stockholders	$	169,309	$	186,197	$	578,099	$	583,178

See accompanying notes to unaudited condensed consolidated financial statements.

8

Extra Space Storage Inc.

Condensed Consolidated Statement of Noncontrolling Interests and Equity

For the three and nine months ended September 30, 2024

(unaudited, amounts in thousands, except share data)

	Noncontrolling Interest							Extra Space Storage Inc. Stockholders' Equity
		Preferred Operating Partnership		Operating Partnership		Other		Shares	Par Value		Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Noncontrolling Interests and Equity
Balances at June 30, 2024		$	191,306	$	757,102	$	9,800	211,927,348	$	2,120	$	14,810,938	$	27,241	$	(667,667)	$	15,130,840
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement		—		—		—		10,515	—		8,224		—		—		8,224
Offering costs associated with shelf registration		—		—		—		—	—		(28)		—		—		(28)
Redemption of Operating Partnership units for stock		—		(3,884)		—		43,879	—		3,884		—		—		—
Noncontrolling interest in consolidated joint ventures		—		—		825		—	—		—		—		—		825
Net income		1,932		7,800		3		—	—		—		—		193,210		202,945
Other comprehensive loss		—		(986)		—		—	—		—		(23,901)		—		(24,887)
Distributions to Operating Partnership units held by noncontrolling interests		(1,932)		(13,896)		—		—	—		—		—		—		(15,828)
Dividends paid on common stock at $1.62 per share		—		—		—		—	—		—		—		(343,408)		(343,408)
Balances at September 30, 2024		$	191,306	$	746,136	$	10,628	211,981,742	$	2,120	$	14,823,018	$	3,340	$	(817,865)	$	14,958,683
Balances at December 31, 2023		$	222,360	$	791,754	$	8,914	211,278,803	$	2,113	$	14,750,388	$	17,435	$	(379,015)	$	15,413,949
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement		—		—		—		178,944	2		14,417		—		—		14,419
Issuance of common stock, net of offering costs		—		—		—		2,310	—		365		—		—		365
Offering costs associated with shelf registration		—		—		—		—	—		(522)		—		—		(522)
Redemption of Operating Partnership units for stock		(31,054)		(27,321)		—		521,685	5		58,370		—		—		—
Noncontrolling interest in consolidated joint ventures		—		—		1,687		—	—		—		—		—		1,687
Net income		6,073		24,137		27		—	—		—		—		592,194		622,431
Other comprehensive loss		—		(596)		—		—	—		—		(14,095)		—		(14,691)
Distributions to Operating Partnership units held by noncontrolling interests		(6,073)		(41,838)		—		—	—		—		—		—		(47,911)
Dividends paid on common stock at $4.86 per share		—		—		—		—	—		—		—		(1,031,044)		(1,031,044)
Balances at September 30, 2024		$	191,306	$	746,136	$	10,628	211,981,742	$	2,120	$	14,823,018	$	3,340	$	(817,865)	$	14,958,683

9

Extra Space Storage Inc.

Condensed Consolidated Statement of Noncontrolling Interests and Equity

For the three and nine months ended September 30, 2023

(unaudited, amounts in thousands, except share data)

	Noncontrolling Interest							Extra Space Storage Inc. Stockholders' Equity
		Preferred Operating Partnership		Operating Partnership		Other		Shares	Par Value		Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Accumulated Deficit		Total Noncontrolling Interests and Equity
Balances at June 30, 2023		$	222,940	$	553,610	$	3,079	135,058,897	$	1,351	$	3,383,303	$	47,065	$	(175,941)	$	4,035,407
Issuance of common stock in connection with share based compensation		—		—		—		1,253	—		6,994		—		—		6,994
Taxes paid upon net settlement of share based compensation		—		—		—		(414)	—		(63)		—		—		(63)
Restricted stock grants cancelled		—		—		—		(3,128)	—		—		—		—		—
Redemption of Operating Partnership units for stock		—		(163)		—		2,119	—		163		—		—		—
Life Storage Merger issuance of common stock and Operating Partnership units		—		249,470		—		76,217,359	762		11,352,576		—		—		11,602,808
Noncontrolling interest in consolidated joint ventures		—		—		5,209		—	—		—		—		—		5,209
Net income (loss)		2,253		8,284		(31)		—	—		—		—		188,350		198,856
Other comprehensive loss		—		(111)		—		—	—		—		(2,153)		—		(2,264)
Distributions to Operating Partnership units held by noncontrolling interests		(2,254)		(12,706)		—		—	—		—		—		—		(14,960)
Dividends paid on common stock at $1.62 per share		—		—		—		—	—		—		—		(265,286)		(265,286)
Balances at September 30, 2023		$	222,939	$	798,384	$	8,257	211,276,086	$	2,113	$	14,742,973	$	44,912	$	(252,877)	$	15,566,701
Balances at December 31, 2022		$	261,502	$	556,095	$	1,080	133,921,020	$	1,339	$	3,345,332	$	48,798	$	(135,872)	$	4,078,274
Issuance of common stock in connection with share based compensation		—		—		—		144,640	2		19,431		—		—		19,433
Taxes paid upon net settlement of share based compensation		—		—		—		(8,074)	—		(7,606)		—		—		(7,606)
Restricted stock grants cancelled		—		—		—		(6,983)	—		—		—		—		—
Redemption of Operating Partnership units for stock		—		(163)		—		2,119	—		163		—		—		—
Redemption of Preferred A Units in the Operating Partnership for stock		(16,339)		—		—		851,698	8		11,015		—		—		(5,316)
Redemption of Preferred D Units in the Operating Partnership for stock		(22,064)		—		—		154,307	2		22,062		—		—		—
Life Storage Merger issuance of common stock and Operating Partnership units		—		249,470		—		76,217,359	762		11,352,576		—		—		11,602,808
Noncontrolling interest in consolidated joint ventures		—		—		7,309		—	—		—		—		—		7,309
Net income (loss)		6,761		29,353		(132)		—	—		—		—		587,064		623,046
Other comprehensive loss		—		(289)		—		—	—		—		(3,886)		—		(4,175)
Distributions to Operating Partnership units held by noncontrolling interests		(6,921)		(36,082)		—		—	—		—		—		—		(43,003)
Dividends paid on common stock at $4.86 per share		—		—		—		—	—		—		—		(704,069)		(704,069)
Balances at September 30, 2023		$	222,939	$	798,384	$	8,257	211,276,086	$	2,113	$	14,742,973	$	44,912	$	(252,877)	$	15,566,701

10

Extra Space Storage Inc.

Condensed Consolidated Statement of Noncontrolling Interests and Equity

For the three and nine months ended September 30, 2023

(unaudited, amounts in thousands, except share data)

See accompanying notes to unaudited condensed consolidated financial statements.

11

Extra Space Storage Inc.

Condensed Consolidated Statements of Cash Flows

(amounts in thousands)

(unaudited)

	For the Nine Months Ended September 30,
	2024		2023
Cash flows from operating activities:
Net income	$	622,431	$	623,046
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	586,821		309,914
Amortization of deferred financing costs	13,419		9,716
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	32,563		8,228
Compensation expense related to share-based awards	14,417		19,433
Accrual of interest income added to principal of debt securities and notes receivable	(23,455)		(30,127)
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	(13,730)		—
Impairment of Life Storage trade name	51,763		—
Loss on real estate assets held for sale	63,620		—
Distributions from unconsolidated real estate ventures	21,839		11,484
Changes in operating assets and liabilities:
Other assets	45,737		(31,675)
Accounts payable and accrued expenses	45,145		134,310
Other liabilities	18,581		(16,370)
Net cash provided by operating activities	1,479,151		1,037,959
Cash flows from investing activities:
Acquisition of real estate assets and improvements	(361,126)		(197,333)
Life Storage Merger, net of cash acquired	—		(1,182,411)
Development and redevelopment of real estate assets	(100,507)		(66,533)
Proceeds from sale of real estate assets and investments in real estate ventures	4,415		2,132
Investment in unconsolidated real estate entities	(7,175)		(179,258)
Return of investment in unconsolidated real estate ventures	12,999		—
Issuance and purchase of notes receivable	(739,702)		(210,712)
Principal payments received from notes receivable	153,971		73,514
Proceeds from sale of notes receivable	175,335		134,064
Purchase of equipment and fixtures	(15,713)		(9,515)
Net cash used in investing activities	(877,503)		(1,636,052)
Cash flows from financing activities:
Proceeds from unsecured term loans and senior notes and revolving lines of credit	5,542,362		5,194,665
Principal payments on unsecured term loans and senior notes and revolving lines of credit	(6,062,896)		(4,617,755)
Proceeds from issuance of public bonds, net	1,000,000		950,000
Deferred financing costs	(12,633)		(51,359)
Proceeds from share issuances	365		—
Offering costs associated with shelf registration	(522)		—
Redemption of Preferred A Units for cash	—		(5,000)
Contributions from noncontrolling interests	15		—
Dividends paid on common stock	(1,031,044)		(704,069)
Distributions to noncontrolling interests	(48,053)		(43,003)
Net cash (used in) provided by financing activities	(612,406)		723,479
Net (decrease) increase in cash, cash equivalents, and restricted cash	(10,758)		125,386
Cash, cash equivalents, and restricted cash, beginning of the period	105,083		97,735

12

Extra Space Storage Inc.

Condensed Consolidated Statements of Cash Flows

(amounts in thousands)

(unaudited)

	For the Nine Months Ended September 30,
	2024		2023
Cash, cash equivalents, and restricted cash, end of the period	$	94,325	$	223,121
Cash and equivalents, including restricted cash at the beginning of the period:
Cash and equivalents	$	99,062	$	92,868
Restricted cash included in other assets	6,021		4,867
	$	105,083	$	97,735
Cash and equivalents, including restricted cash at the end of the period:
Cash and equivalents	$	88,931	$	216,121
Restricted cash included in other assets	5,394		7,000
	$	94,325	$	223,121
Supplemental schedule of cash flow information
Interest paid	$	381,434	$	207,569
Income taxes paid	30,635		20,222
Supplemental schedule of noncash investing and financing activities:
Redemption of Operating Partnership units held by noncontrolling interests for common stock
Noncontrolling interests in Operating Partnership	$	58,375	$	116,336
Common stock and paid-in capital	(58,375)		(11,336)
Noncontrolling interests in Operating Partnership Note Receivable Payoff	—		(100,000)
OP Unit Redemption - Cash Proceeds	—		(5,000)
Accrued construction costs and capital expenditures
Acquisition of real estate assets	$	9,094	$	6,835
Accounts payable and accrued expenses	(9,094)		(6,835)

See accompanying notes to unaudited condensed consolidated financial statements.

13

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Amounts in thousands, except store and share data, unless otherwise stated

1.    ORGANIZATION

Extra Space Storage Inc. (the “Company”) is a fully integrated, self-administered and self-managed REIT, formed as a Maryland corporation on April 30, 2004, to own, operate, manage, acquire, develop and redevelop professionally managed self-storage properties (“stores”) located throughout the United States. The Company was formed to continue the business of Extra Space Storage LLC and its subsidiaries, which had engaged in the self-storage business since 1977. The Company’s interest in its stores is held through its operating partnership, Extra Space Storage LP (the “Operating Partnership”), which was formed on May 5, 2004. The Company’s primary assets are general partner and limited partner interests in the Operating Partnership, which meets the definition of a variable interest entity and is consolidated. This structure is commonly referred to as an umbrella partnership REIT, or UPREIT.

The Company invests in stores by acquiring wholly-owned stores or by acquiring an equity interest in real estate entities. At September 30, 2024, the Company had direct and indirect equity interests in 2,401 stores. In addition, the Company managed 1,461 stores for third parties, bringing the total number of stores which it owns and/or manages to 3,862. These stores are located in 42 states and Washington, D.C. The Company offers tenant reinsurance at its owned and managed stores that insures the value of goods in the storage units and also offers bridge loan financing to certain of its third-party self-storage owners.

2.    BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements of the Company are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they may not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (including normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2024 are not necessarily indicative of results that may be expected for the year ending December 31, 2024. The condensed consolidated balance sheet as of December 31, 2023 has been derived from the Company’s audited financial statements as of that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the Securities and Exchange Commission.

Recently Issued Accounting Standards

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07 – Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amended guidance requires the disclosure of incremental segment information, including significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and a reconciliation of segment profit or loss to net income. The title and position of the CODM must also be disclosed, along with how the CODM uses the reported measures to assess segment performance and to allocate resources. Pursuant to this ASU, the footnotes to the Company's consolidated financial statements may include incremental disclosures related to its two reportable segments: (1) self-storage operations and (2) tenant reinsurance. The compliance with this ASU will be required beginning with the Company's annual report on Form 10-K for the year ending December 31, 2024, followed by interim disclosures in quarterly reports on Form 10-Q thereafter, with early adoption permitted. The Company expects to adopt this ASU for its annual report on Form 10-K for the year ending December 31, 2024.

3.    FAIR VALUE DISCLOSURES

Derivative Financial Instruments

Currently, the Company uses interest rate swaps to manage its interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the

14

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

market standard methodology of netting the discounted future fixed cash payments and the discounted expected variable cash receipts. The variable cash receipts are based on an expectation of future interest rates (forward curves) derived from observable market interest rate forward curves.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. In conjunction with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of September 30, 2024, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments were not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety were classified in Level 2 of the fair value hierarchy.

The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2024, aggregated by the level in the fair value hierarchy within which those measurements fall. 

	Fair Value Measurements at Reporting Date Using
Description	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets - Cash flow hedge swap agreements	$	—	$	11,716	$	—
Other liabilities - Cash flow hedge swap agreements	$	—	$	6,093	$	—

The Company did not have any significant assets or liabilities that are re-measured on a recurring basis using significant unobservable inputs as of September 30, 2024 or December 31, 2023.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Long-lived assets held for use are evaluated for impairment when events or circumstances indicate there may be impairment. The Company reviews each store at least annually to determine if any such events or circumstances have occurred or exist. The Company focuses on stores where occupancy and/or rental income have decreased by a significant amount. For these stores, the Company determines whether the decrease is temporary or permanent, and whether the store will likely recover the lost occupancy and/or revenue in the short term. In addition, the Company reviews stores in the lease-up stage and compares actual operating results to original projections.

When the Company determines that an event that may indicate impairment has occurred, the Company compares the carrying value of the related long-lived assets to the undiscounted future net operating cash flows attributable to the assets. An impairment loss is recorded if the net carrying value of the assets exceeds the undiscounted future net operating cash flows attributable to the assets. The impairment loss recognized equals the excess of net carrying value over the related fair value of the assets.

When real estate assets are identified by management as held for sale, the Company discontinues depreciating the assets and estimates the fair value of the assets, net of selling costs. The Company compares the carrying value of the related long-lived assets to the discounted future net operating cash flows attributable to the assets (categorized within Level 3 of the fair value hierarchy). If the estimated fair value, net of selling costs, of the assets that have been identified as held for sale is less than the net carrying value of the assets, the Company would recognize a loss on the assets held for sale. The operations of assets held for sale or sold during the period are presented as part of normal operations. As of September 30, 2024, the Company had 17 stores classified as held for sale which are included in real estate assets, net. Of the 17 stores, nine had an

15

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

estimated fair value, net of selling costs, of $70,952. During the nine months ended September 30, 2024, the Company recorded a loss of $63,620 as the fair value of these nine stores was less than the net carrying value.

The Company assesses annually whether there are any indicators that the value of the Company’s investments in unconsolidated real estate entities may be impaired and when events or circumstances indicate that there may be impairment. An investment is impaired if management’s estimate of the fair value of the investment is less than its carrying value. To the extent impairment has occurred, and is considered to be other than temporary, the loss is measured as the excess of the carrying amount of the investment over the fair value of the investment.

The Company evaluates goodwill for impairment at least annually and whenever events, circumstances, and other related factors indicate that the fair value of the related reporting unit may be less than the carrying value. If the fair value of the reporting unit is determined to exceed the aggregate carrying amount, no impairment charge is recorded. Otherwise, an impairment charge is recorded for the amount in which the fair value of the reporting unit exceeds the carrying value. No impairments of goodwill were recorded for any period presented herein.

Fair Value of Financial Instruments

The carrying values of cash and cash equivalents, restricted cash, receivables, other financial instruments included in other assets, net, accounts payable and accrued expenses, variable-rate notes payable, investments in debt securities and notes receivable, revolving lines of credit and other liabilities reflected in the condensed consolidated balance sheets at September 30, 2024 and December 31, 2023 approximate fair value. Restricted cash is comprised of funds deposited with financial institutions located throughout the United States primarily relating to operating cash reserve for the Company's captive insurance subsidiary and earnest money deposits on potential acquisitions.

The fair values of the Company’s fixed-rate notes payable were estimated using the discounted estimated future cash payments to be made on such debt (categorized within Level 3 of the fair value hierarchy); the discount rates used approximated current market rates for loans, or groups of loans, with similar maturities and credit quality.

The fair values of the Company’s fixed-rate liabilities were as follows for the periods indicated:

	September 30, 2024				December 31, 2023
	Fair Value		Carrying Value		Fair Value		Carrying Value
Fixed rate debt	$	8,761,624	$	9,014,590	$	7,482,054	$	8,048,605

4.    ACQUISITIONS AND DISPOSITIONS

The Life Storage Merger

On July 20, 2023, the Company closed its merger with Life Storage (the “Life Storage Merger”), which included 757 wholly-owned stores and one consolidated joint venture store. Under the terms of the Life Storage Merger, Life Storage stockholders and holders of units of the Life Storage operating partnership received 0.895 of a share of common stock (or OP Unit, as applicable) of the Company for each issued and outstanding share (or operating partnership unit) of Life Storage they owned for total equity consideration of $11,602,808, based on the Company's closing share price on July 19, 2023. At closing, the Company retired $1,160,000 in balances on Life Storage's line of credit which included $375,000 that Life Storage used to pay off its private placement notes in connection with the closing of the Life Storage Merger. The Company also paid off $32,000 in secured loans. On July 25, 2023, the Company completed obligor exchange offers and consent solicitations (together the “Exchange Offers”) related to Life Storage's various senior notes. Upon the closing of the Exchange Offers, a total of $2,351,100 of Life Storage's senior notes were exchanged for senior notes of the same tenor of Extra Space Storage L.P. The remaining Life Storage senior note balances which were not exchanged total $48,900 and no longer have any financial reporting requirements or covenants.

16

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

Consideration and Purchase Price Allocation

The Life Storage Merger was accounted for as an asset acquisition in accordance with ASC Topic 805 which requires that the cost of an acquisition be allocated on a relative fair value basis to the assets acquired and the liabilities assumed. The following table summarizes the fair value of total consideration transferred in the Life Storage Merger:

Consideration Type	July 20, 2023
Common stock	$	11,353,338
OP units	249,470
Cash for payoff of Life Storage credit facility and debt	1,192,000
Transaction Costs	55,318
Total consideration	$	12,850,127

The following table summarizes the estimated fair values assigned to the assets acquired and liabilities assumed:

	July 20, 2023
Real estate assets	$	14,587,735
Equity investment in joint venture partnerships	325,250
Cash and other assets	107,423
Intangible assets - other	82,000
Trade name	50,000
Unsecured senior notes	(2,106,866)
Accounts payable, accrued expenses and other liabilities	(191,077)
Noncontrolling interests	(4,338)
Fair value of net assets acquired	$	12,850,127

Fair Value Measurement

The estimated fair values of assets acquired and liabilities assumed were primarily based on information that was available as of the closing date of the Life Storage Merger. The methodology used to estimate the fair values to apply purchase accounting and the ongoing financial statement impact, if any, are summarized below.

•Real estate assets – Real estate assets acquired were recorded at fair value using standard valuation methodologies, including the cost and market approaches. The remaining useful lives for real estate assets, excluding land, were reset to 39 years. Tenant relationships for storage leases were recorded at fair value based on estimated costs the Company avoided to replace them. Tenant relationships are amortized to expense over 18 months, which is based on the Company’s historical experience with turnover in its stores.

•Equity investment in joint venture partnerships – Equity investment in joint venture partnerships were recorded at fair value based on a direct capitalization of net operating income.

•Intangible assets - other – Customer relationships relating to tenant reinsurance contracts were recorded at fair value based on the income approach which estimates the potential revenue loss the Company avoided to replace them. These assets are amortized to expense over 36 months, which is based on the Company’s historical experience with average length of stay for tenants.

•Trade name – Trade names were recorded at fair value based on royalty payments avoided had the trade name been owned by a third party. This is determined using market royalty rates and a discounted cash flow analysis under the relief-from-royalty method. This method incorporates various assumptions, including projected revenue growth rates, the terminal growth rate, the royalty rate to be applied, and the discount rate utilized. The trade name is an indefinite lived asset and as such is not amortized. During the three months ended September 30, 2024, the Company decided to operate

17

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

all stores under a single brand. As a result of that decision, the Company deemed the Life Storage trade name intangible asset to be impaired and recognized a loss for the full value of the asset.

•Unsecured senior notes – Unsecured senior notes were recorded at fair value using readily available market data. The below-market value of debt is recorded as a debt discount and reported as a reduction of the unsecured senior notes, net balance on the condensed consolidated balance sheets. The discount is amortized using the effective interest method as an increase to interest expense over the remaining terms of the unsecured senior notes.

•Other assets and liabilities – The carrying values of cash, accounts receivable, prepaids and other assets, accounts payable, accrued expenses and other liabilities represented the fair values.

Store Acquisitions

The following table shows the Company’s acquisitions of stores for the three and nine months ended September 30, 2024 and 2023. The table excludes purchases of raw land and improvements made to existing assets. All store acquisitions are considered asset acquisitions under ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.”

														Total
Period	Number of Stores	Cash Paid		Loan Assumed		Finance Lease Liability		Investments in Real Estate Ventures		Net Liabilities/ (Assets) Assumed		Value of Equity Issued		Real estate assets
Q3 2024	11	$	159,196	$	—	$	—	$	—	$	1,431	$	—	$	160,627
Q2 2024	3	27,644		—		—		—		97		$	—	27,741
Q1 2024	6	35,084		—		—		—		171		$	—	35,255
Total 2024	20	$	221,924	$	—	$	—	$	—	$	1,699	$	—	$	223,623
Q3 2023	3	$	18,578	$	—	$	—	$	—	$	86	$	—	$	18,664
Q2 2023	3	32,888		—		—		—		26		—		32,914
Q1 2023	1	13,111		—		—		—		6		—		13,117
Total 2023	7	$	64,577	$	—	$	—	$	—	$	118	$	—	$	64,695

18

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

5.    REAL ESTATE ASSETS

The components of real estate assets are summarized as follows:

	September 30, 2024		December 31, 2023
Land	$	4,923,702	$	4,904,705
Buildings, improvements and other intangibles	22,032,745		21,664,224
Right of use asset - finance lease	143,286		143,842
Intangible assets - tenant relationships	322,771		321,019
Intangible lease rights	27,743		27,743
	27,450,247		27,061,533
Less: accumulated depreciation and amortization	(3,168,088)		(2,624,405)
Net operating real estate assets	24,282,159		24,437,128
Real estate under development/redevelopment	103,333		118,745
Real estate assets, net	$	24,385,492	$	24,555,873
Real estate assets held for sale included in real estate assets, net	$	131,527	$	—

In September 2024, the Company amended existing triple-net lease agreements for land and buildings related to 27 stores that had initially been entered into in June and August 2019. The Company also entered into new triple-net lease agreements for land and buildings related to 12 additional stores. Both the initial 27 stores and the additional 12 stores added to the triple net lease structure are categorized as operating leases and have been presented in real estate assets - operating lease right-of-use assets and operating lease liabilities on the Company's condensed consolidated balance sheets.

As of September 30, 2024, the Company had 17 stores classified as held for sale which are included in real estate assets, net. Of the 17 stores, nine had an estimated fair value, net of selling costs, less than the carrying value of the assets. During the three and nine months ended September 30, 2024, the Company recorded estimated losses of $8,961 and $63,620, respectively, in loss on real estate assets held for sale on the Company's condensed consolidated statements of operations. Assets held for sale are included in the self-storage operations segment of the Company’s segment information.

6.     OTHER ASSETS

The components of other assets are summarized as follows:

	September 30, 2024		December 31, 2023
Goodwill	$	170,811	$	170,811
Receivables, net	112,748		134,716
Prepaid expenses and deposits	97,521		85,153
Other intangible assets, net	39,498		66,332
Trade name	—		50,000
Fair value of interest rate swaps	11,716		26,183
Equipment and fixtures, net	50,065		48,697
Deferred line of credit financing costs, net	8,108		9,787
Restricted cash	5,394		6,021
	$	495,861	$	597,700

During the three months ended September 30, 2024, the Company decided to operate all stores under a single brand. As a result of that decision, the Company deemed the Life Storage trade name intangible asset to be impaired and recognized a loss for the full value of the asset. A loss of $51,763 for the write-off of the asset and related costs has been recorded in impairment

19

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

of Life Storage trade name on the Company's condensed consolidated statements of operations for the three months ended September 30, 2024. The trade name was originally recorded at fair value based on royalty payments avoided had the trade name been owned by a third party. This was determined using market royalty rates and a discounted cash flow analysis under the relief-from-royalty method. Intangible assets are included in the self-storage operations segment of the Company’s segment information.

7.    EARNINGS PER COMMON SHARE

Basic earnings per common share is computed using the two-class method by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding during the period. All outstanding unvested restricted stock awards contain rights to non-forfeitable dividends and participate in undistributed earnings with common stockholders; accordingly, they are considered participating securities that are included in the two-class method. Diluted earnings per common share measures the performance of the Company over the reporting period while giving effect to all potential common shares that were dilutive and outstanding during the period. The denominator includes the weighted average number of basic shares and the number of additional common shares that would have been outstanding if the potential common shares that were dilutive had been issued, and is calculated using the two-class, treasury stock or if-converted method, whichever is most dilutive. Potential common shares are securities (such as options, Series A Participating Redeemable Preferred Units (“Series A Units”), Series B Redeemable Preferred Units (“Series B Units”), Series D Redeemable Preferred Units (“Series D Units” and, together with the Series A Units and Series B Units, the “Preferred OP Units”) and common Operating Partnership units (“OP Units”)) that do not have a current right to participate in earnings of the Company but could do so in the future by virtue of their option, redemption or conversion right.

In computing the dilutive effect of convertible securities, net income is adjusted to add back any changes in earnings in the period associated with the convertible security. The numerator also is adjusted for the effects of any other non-discretionary changes in income or loss that would result from the assumed conversion of those potential common shares. In computing diluted earnings per common share, only potential common shares that are dilutive (i.e. those that reduce earnings per common share) are included.

For the purposes of computing the diluted impact of the potential exchange of the Preferred Operating Partnership units for common shares upon redemption, where the Company has the option to redeem in cash or shares and where the Company has stated the intent and ability to settle the redemption in shares, the Company divided the total value of the Preferred Operating Partnership units by the average share price for the period presented. The average share price for the three months ended September 30, 2024 and 2023 was $168.78 and $134.24, respectively.

The following table presents the number of Common and Preferred Operating Partnership units as if converted into potential common shares that were excluded from the computation of earnings per share as their effect would have been anti-dilutive.

	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2024	2023	2024	2023
	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)
Common OP Units	—	8,541,775	—	7,661,885
Series B Units	198,887	250,061	218,529	228,029
Series D Units	934,585	1,409,198	1,111,927	1,287,256
	1,133,472	10,201,034	1,330,456	9,177,170

20

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

The computation of earnings per common share is as follows for the periods presented:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net income attributable to common stockholders	$	193,210	$	188,350	$	592,194	$	587,064
Earnings and dividends allocated to participating securities	(392)		(304)		(1,141)		(931)
Earnings for basic computations	192,818		188,046		591,053		586,133
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units	7,800		—		24,136		—
Net income for diluted computations	$	200,618	$	188,046	$	615,189	$	586,133
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	211,698,436		195,324,444		211,522,578		155,112,071
OP Units	8,597,656		—		8,651,915		—
Shares related to dilutive stock options	2,778		3,576		3,199		4,078
Average number of common shares outstanding - diluted	220,298,870		195,328,020		220,177,692		155,116,149
Earnings per common share
Basic	$	0.91	$	0.96	$	2.79	$	3.78
Diluted	$	0.91	$	0.96	$	2.79	$	3.78

8.    INVESTMENTS IN UNCONSOLIDATED REAL ESTATE ENTITIES

Investments in unconsolidated real estate entities and cash distributions in unconsolidated real estate ventures represent the Company's interest in preferred stock of SmartStop Self Storage REIT, Inc. (“SmartStop”) and Strategic Storage Trust VI, Inc. (“Strategic Storage”), an affiliate of SmartStop, and the Company's noncontrolling interest in real estate joint ventures. The Company accounts for its investments in SmartStop and Strategic Storage preferred stock, which do not have a readily determinable fair value, at the transaction price less impairment, if any. The Company accounts for its investments in joint ventures using the equity method of accounting. The Company initially records these investments at cost and subsequently adjusts for cash contributions, distributions and net equity in income or loss, which is allocated in accordance with the provisions of the applicable partnership or joint venture agreement.

In these joint ventures, the Company and the joint venture partner generally receive a preferred return on their invested capital. To the extent that cash or profits in excess of these preferred returns are generated through operations or capital transactions, the Company would receive a higher percentage of the excess cash or profits, as applicable, than its equity interest.

The Company separately reports investments with net equity less than zero in cash distributions in unconsolidated real estate ventures in the condensed consolidated balance sheets. The net equity of certain joint ventures is less than zero because distributions have exceeded the Company's investment in and share of income from these joint ventures. This is generally the result of financing distributions, capital events or operating distributions that are usually greater than net income, as net income includes non-cash charges for depreciation and amortization while distributions do not.

21

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

Net investments in unconsolidated real estate entities and cash distributions in unconsolidated real estate ventures consist of the following:

	Number of Stores	Equity Ownership %	Excess Profit % (1)	September 30,		December 31,
				2024		2023
PRISA Self Storage LLC	85	4%	4%	$	9,110	$	9,435
HF1 Sovran HHF Storage Holdings LLC	37	20%	20%	102,901		105,339
Storage Portfolio II JV LLC	36	10%	30%	(9,219)		(8,314)
Storage Portfolio IV JV LLC	32	10%	30%	47,491		48,184
Storage Portfolio I LLC	24	34%	49%	(43,430)		(42,487)
PR II EXR JV LLC	23	25%	25%	106,456		108,160
HF2 Sovran HHF Storage Holdings II LLC	22	15%	15%	41,039		41,613
HF5 Life Storage-HIERS Storage LLC	17	20%	20%	25,450		26,051
HF6 191 V Life Storage Holdings LLC	17	20%	20%	11,315		12,702
ESS-CA TIVS JV LP	16	55%	55%-65%	27,794		29,128
VRS Self Storage, LLC	16	45%	54%	(17,312)		(16,386)
HF10 Life Storage HHF Wasatch Holdings LLC	16	20%	20%	19,581		20,019
Other unconsolidated real estate ventures (2) (3)	119	10%-50%	10%-50%	314,864		317,104
SmartStop Self Storage REIT, Inc. Preferred Stock (4)	n/a	n/a	n/a	200,000		200,000
Strategic Storage Trust VI, Inc. Preferred Stock (5)	n/a	n/a	n/a	150,000		150,000
Net Investments in and Cash distributions in unconsolidated real estate entities	460			$	986,040	$	1,000,548

(1)    Includes pro-rata equity ownership share and promoted interest.

(2)    In August 2024, the ESS Bristol Investments LLC unconsolidated joint venture sold five of its eight stores to another of the Company's unconsolidated joint ventures, and the Company recognized a gain of $10,324 for its pro rata share of the transaction. The Company then acquired its partner's membership interest in the remaining three stores held by ESS Bristol Investments LLC, which is now presented under real estate assets, net on the Company's condensed consolidated balance sheets.

(3)    In September 2024, the Company sold its membership interest in the Alan Jathoo JV LLC unconsolidated joint venture, which held nine stores, to its partner in such joint venture and recognized a gain of $3,406 on the transaction. This gain and the gain from the ESS Bristol Investments LLC transaction are presented in equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest on the Company's condensed consolidated statements of operations for the three months ended September 30, 2024.

(4)    In October 2019, the Company invested $200,000 in shares of convertible preferred stock of SmartStop with a dividend rate of 6.25% per annum, subject to increase after five years. The preferred shares are generally not redeemable for five years, except in the case of a change of control or initial listing of SmartStop. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities line on the Company's condensed consolidated statements of operations.

(5)    In May 2023, the Company invested $150,000 in shares of convertible preferred stock of Strategic Storage with a dividend rate of 8.35% per annum, subject to increase after five years. The preferred shares are generally not redeemable for three years, except in the case of a change of control or initial listing of Strategic Storage. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities on the Company's condensed consolidated statements of operations.

9.    INVESTMENTS IN DEBT SECURITIES AND NOTES RECEIVABLE

Investments in debt securities and notes receivable consists of the Company's investment in mandatorily redeemable preferred stock of Jernigan Capital, Inc. (“JCAP”) in connection with JCAP's acquisition by affiliates of NexPoint Advisors, L.P. (“NexPoint”) and receivables due to the Company under its bridge loan program. Information about these balances is as

22

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

follows:

	September 30, 2024		December 31, 2023
Debt securities - Preferred Stock	$	300,000	$	300,000
Notes Receivable - Bridge Loans	1,032,244		594,727
Dividends and Interest Receivable	6,375		10,042
	$	1,338,619	$	904,769

In November 2020, the Company invested $300,000 in the preferred stock of JCAP in connection with the acquisition of JCAP by NexPoint. This investment consisted of 200,000 Series A Preferred Shares valued at a total of $200,000, and 100,000 Series B Preferred Shares valued at a total of $100,000. In December 2022, the Company completed a modification with NexPoint Storage Partners (as successor in interest to JCAP) that exchanged the Series A and Series B Preferred Shares for 300,000 Series D Preferred Shares, valued at a total of $300,000. The Series D Preferred Shares are mandatorily redeemable after six years from the modification in December 2022, with two one-year extension options. NexPoint may redeem the Series D Preferred Shares at any time, subject to certain prepayment penalties. The Company accounts for the Series D Preferred Shares as a held to maturity debt security at amortized cost. The Series D Preferred Shares have an initial dividend rate of 8.5%. If the investment is not retired after six years, the preferred dividends increase annually.

The Company offers bridge loan financing to certain of its third-party self-storage owners. These notes receivable consist of mortgage loans receivable, which are collateralized by self-storage properties that the Company manages, and mezzanine loans receivable, which are secured by equity interest pledges. As of September 30, 2024, 71% of the notes held are mortgage receivables. The Company intends to sell a portion of the mortgage receivables. These notes receivable typically have a term of three years with two one-year extensions and have variable interest rates. During the nine months ended September 30, 2024, the Company sold a total principal amount of $175,335 of its mortgage bridge loans receivable to third parties for a total of $175,335 in cash, closed on $636,215 in initial loan draws and recorded $39,709 of draws for interest payments.

The bridge loans typically have a loan to value ratio between 70% and 80%. During the three months ended September 30, 2024, one of the notes receivable entered nonaccrual status. None of the other notes receivable are in past-due or nonaccrual status. The allowance for potential credit losses is immaterial.

10.    DEBT

The components of term debt are summarized as follows:

Term Debt	September 30, 2024		December 31, 2023
Secured notes payable (1)	$	1,018,209	$	1,279,105
Unsecured term loans	2,200,000		2,660,000
Unsecured senior notes	7,725,000		6,725,000
Total	10,943,209		10,664,105
Less: Discount on unsecured senior notes (2)	(241,786)		(274,350)
Less: Unamortized debt issuance costs	(57,593)		(55,007)
Total	$	10,643,830	$	10,334,748
(1) The loans are collateralized by mortgages on real estate assets and the assignment of rents.
(2) Unsecured senior notes from the Life Storage Merger were recorded at fair value, resulting in a discount to be amortized over the term of the debt.

23

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

The following table summarizes the scheduled maturities of term debt, excluding available extensions, at September 30, 2024:

Year	Amount
2024	$	—
2025	782,722
2026	1,409,525
2027	1,312,689
2028	1,328,100
2029	1,516,807
2030	1,343,366
2031	1,650,000
2032	600,000
Thereafter	1,000,000
	$	10,943,209

All of the Company’s lines of credit are guaranteed by the Company. The following table presents information on the Company’s lines of credit, the proceeds of which are used to repay debt and for general corporate purposes, for the periods indicated:

	As of September 30, 2024
Revolving Lines of Credit	Amount Drawn		Capacity		Interest Rate	Maturity	Basis Rate (1)
Credit Line 1 (2)	$	55,000	$	140,000	6.31%	7/1/2026	SOFR plus 1.35%
Credit Line 2 (3)(4)	829,000		2,000,000		5.84%	6/22/2027	SOFR plus 0.875%
	$	884,000	$	2,140,000
(1) Daily Simple Secured Overnight Financing Rate (“SOFR”)
(2) Secured by mortgages on certain real estate assets. On January 13, 2023, the maturity date was extended to July 1, 2026 with one extension of one year available.
(3) Unsecured. On June 22, 2023, the maturity date was extended to June 22, 2027 with two six-month extensions available. On August 11, 2023, the capacity was increased by $60.0 million.
(4) Basis Rate as of September 30, 2024. Rate is subject to change based on the Company's investment grade rating.

On June 22, 2023, the Company entered into the Third Amended and Restated Credit Agreement (the “Credit Agreement”). Pursuant to the terms of the Credit Agreement, the Company may request an extension of the term of the revolving credit facility for up to two additional periods of six months each, after satisfying certain conditions.

As of September 30, 2024, amounts outstanding under the revolving credit facility bore interest at floating rates, at the Company’s option, equal to either (i) Adjusted Term or Daily Simple SOFR plus the applicable margin or (ii) the applicable base rate which is the applicable margin plus the highest of (a) 0.0%, (b) the federal funds rate plus 0.50%, (c) U.S. Bank’s prime rate or (d) the SOFR rate plus 1.00%. Per the Credit Agreement, the applicable SOFR rate margin and applicable base rate margin are based on the Company’s achieved debt rating, with the SOFR rate margin ranging from 0.7% to 2.2% per annum and the applicable base rate margin ranging from 0.00% to 1.20% per annum.

The Credit Agreement is guaranteed by the Company and is not secured by any assets of the Company. The Company's unsecured debt is subject to certain financial covenants. As of September 30, 2024, the Company was in compliance with all of its financial covenants.

As of September 30, 2024, the Company’s percentage of fixed-rate debt to total debt was 78.3%. The weighted average interest rates of the Company’s fixed and variable-rate debt were 4.0% and 6.0%, respectively. The combined weighted average interest rate was 4.5%.

24

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

11.    DERIVATIVES

The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity and credit risk, primarily by managing the amount, sources and duration of its debt funding and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing and duration of the Company’s known or expected cash payments principally related to the Company’s borrowings.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish these objectives, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (“OCI”) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. A portion of these changes is excluded from accumulated other comprehensive income as it is allocated to noncontrolling interests. During the three and nine months ended September 30, 2024 and 2023, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. In the coming 12 months, the Company estimates that $7,681 will be reclassified as an increase to interest income.

The Company held 14 active derivative financial instruments, which had a total current notional amount of $1,382,568 as of September 30, 2024 and two forward-starting derivative financial instruments with effective dates of October 31, 2024 and July 14, 2025.

Fair Values of Derivative Instruments

The table below presents the fair values of the Company’s derivative financial instruments as well as their classification on the condensed consolidated balance sheets:

	Asset / Liability Derivatives
Derivatives designated as hedging instruments:	September 30, 2024		December 31, 2023
Other assets	$	11,716	$	26,183
Other liabilities	$	6,093	$	5,030

Effect of Derivative Instruments

The table below presents the effect of the Company’s derivative financial instruments on the condensed consolidated statements of operations for the periods presented. No tax effect has been presented as the derivative instruments are held by the Company:

	Gain (loss) recognized in OCI for the Three Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Three Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	(17,931)	$	9,146	Interest expense	$	6,965	$	11,415

	Gain (loss) recognized in OCI for the Nine Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Nine Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	7,363	$	27,212	Interest expense	$	22,042	$	31,398

25

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

Credit-Risk-Related Contingent Features

The Company has agreements with some of its derivative counterparties that contain provisions pursuant to which the Company could be declared in default of its derivative obligations if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender.

The Company also has an agreement with some of its derivative counterparties that incorporates the loan covenant provisions of the Company’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with the loan covenant provisions would result in the Company being in default on any derivative instrument obligations covered by the agreement.

As of September 30, 2024, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk related to these agreements, was $5,423. As of September 30, 2024, the Company had not posted any collateral related to these agreements. If the Company had breached any of these provisions as of September 30, 2024, it could have been required to cash settle its obligations under these agreements at their termination value of $5,423. 

12.    STOCKHOLDERS’ EQUITY

On April 15, 2024, the Company filed its $800,000 “at the market” equity program with the Securities and Exchange Commission using a shelf registration statement on Form S-3, and entered into an equity distribution agreement with nine sales agents. No shares have been sold under the current “at the market” equity program, and no shares were sold under the previous “at the market” equity program, which spanned from August 9, 2021 through April 14, 2024.

On November 13, 2023, the Company's board of directors authorized a share repurchase program allowing for the repurchase of shares with an aggregate value up to $500,000. During the year ended December 31, 2023 and the nine months ended September 30, 2024, no shares were repurchased. As of September 30, 2024, the Company had remaining authorization to repurchase shares with an aggregate value up to $500,000.

On July 20, 2023, the Company issued 76,217,359 shares of its common stock at $148.96 for a total value of $11,353,338 as part of the Life Storage Merger. See Acquisitions and Dispositions note above.

13.    NONCONTROLLING INTEREST REPRESENTED BY PREFERRED OPERATING PARTNERSHIP UNITS

Classification of Noncontrolling Interests

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the Operating Partnership’s preferred units and classifies the noncontrolling interest represented by such preferred units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling interest as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount and (2) the redemption value as of the end of the period in which the determination is made.

26

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

At September 30, 2024 and December 31, 2023, the noncontrolling interests represented by the Preferred OP Units qualified for classification as permanent equity on the Company's condensed consolidated balance sheets. The partnership agreement of the Operating Partnership (as amended, the “Partnership Agreement”) provides for the designation and issuance of the OP Units. The balances for each of the specific Preferred OP Units as presented in the Statement of Noncontrolling Interests and Equity as of the periods indicated are as follows:

	September 30, 2024		December 31, 2023
Series B Units	$	33,567	$	33,567
Series D Units	157,739		188,793
	$	191,306	$	222,360

Series A Participating Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series A Units. The Series A Units have priority over all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series A Units.

Series B Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series B Units. The Series B Units rank junior to the Series A Units, on parity with the Series C Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series B Units were issued in 2013 and 2014. The Series B Units have a liquidation value of $25.00 per unit for a fixed liquidation value of $33,567 which represents 1,342,727 Series B Units. Holders of the Series B Units receive distributions at an annual rate of 6.0%. These distributions are cumulative. The Series B Units became redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock.

Series C Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series C Units. The Series C Units ranked junior to the Series A Units, on parity with the Series B Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series C Units.

Series D Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series D Units. The Series D Units rank junior to the Series A Units, on parity with the Series B Units and Series C Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series D Units have a liquidation value of $25.00 per unit, for a fixed liquidation value of $157,739, which represents 6,309,567 Series D Units. Holders of the Series D Units receive distributions at an annual rate between 3.0% and 5.0%. These distributions are cumulative. The Series D Units become redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock. In addition, certain of the Series D Units are exchangeable for OP Units at the option of the holder until the tenth anniversary of the date of issuance, with the number of OP Units to be issued equal to $25.00 per Series D Unit, divided by the value of a share of common stock as of the exchange date.

During the nine months ended September 30, 2024, 1,242,168 Series D Units were redeemed for 213,661 shares of common stock.

27

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

14.    NONCONTROLLING INTEREST IN OPERATING PARTNERSHIP AND OTHER NONCONTROLLING INTERESTS

Noncontrolling Interest in Operating Partnership

The Company’s interest in its stores is held through the Operating Partnership. Between its general partner and limited partner interests, the Company held a 95.6% ownership interest in the Operating Partnership as of September 30, 2024. The remaining ownership interests in the Operating Partnership (including Preferred OP Units) of 4.4% are held by certain former owners of assets acquired by the Operating Partnership. As of September 30, 2024 and December 31, 2023, the noncontrolling interests in the Operating Partnership are shown on the balance sheet net of a note receivable of $1,900 because a borrower under the note receivable is also a holder of OP Units. This note receivable originated in December 2014, bears interest at 5.0% per annum and matures on December 15, 2024.

The noncontrolling interest in the Operating Partnership represents OP Units that are not owned by the Company. OP Units are redeemable at the option of the holder, which redemption may be satisfied at the Company's option in cash, based upon the fair market value of an equivalent number of shares of the Company’s common stock (based on the ten-day average trading price) at the time of the redemption, or shares of the Company's common stock on a one-for-one basis, subject to anti-dilution adjustments provided in the Partnership Agreement. As of September 30, 2024, the ten-day average closing price of the Company's common stock was $180.16 and there were 8,577,570 OP Units outstanding. Assuming that all of the OP Unit holders exercised their right to redeem all of their OP Units on September 30, 2024 and the Company elected to pay the OP Unit holders cash, the Company would have paid $1,545,335 in cash consideration to redeem the units.

OP Unit activity is summarized as follows for the periods presented:

	For the Nine Months Ended September 30,
	2024		2023
OP Units redeemed for common stock	308,024		—
OP Units issued in conjunction with business combination and acquisitions	—		1,674,748
Value of OP Units issued in conjunction with business combination and acquisitions	$	—	$	249,470

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations, and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the OP Units and classifies the noncontrolling interest represented by the OP Units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling amount as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount, or (2) its redemption value as of the end of the period in which the determination is made.

Other Noncontrolling Interests

Other noncontrolling interests represent the ownership interest of partners in nine consolidated joint ventures as of September 30, 2024. There are a total of 13 stores in consolidated joint ventures, seven of which are operating and the other six of which are under development. The voting interests of the partners are 17.0% or less.

Based on the facts and circumstances of each of the Company’s joint ventures, the Company has determined that one of the joint ventures at September 30, 2024 was a variable interest entity (“VIE”) in accordance with ASC 810, “Consolidation.” The Company has consolidated that joint venture as it was determined that the Company has the power to direct the activities of the joint venture and is the primary beneficiary of the joint venture.

28

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

15.    SEGMENT INFORMATION

The Company’s segment disclosures present the measure used by the chief operating decision makers (“CODMs”) for purposes of assessing each segment’s performance. The Company’s CODMs are comprised of several members of its executive management team who use net operating income (“NOI”) to assess the performance of the business for the Company’s reportable operating segments. The Company’s segments are comprised of two reportable segments: (1) self-storage operations and (2) tenant reinsurance. NOI for the Company's self-storage operations represents total property revenue less direct property operating expenses. NOI for the Company's tenant reinsurance segment represents tenant reinsurance revenues less tenant reinsurance expense.

The self-storage operations activities include rental operations of wholly-owned stores and self-storage units acquired in the Bargold transaction on June 1, 2022. The Company's consolidated revenues equal total segment revenues plus property management fees and other income. Tenant reinsurance activities include the reinsurance of risks relating to the loss of goods stored by tenants in the stores operated by the Company. Excluded from segment revenues and net operating income is property management fees and other income.

For all periods presented, substantially all of the Company's real estate assets, intangible assets, other assets, and accrued and other liabilities are associated with the self-storage operations segment. Financial information for the Company’s business segments is set forth below:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Revenues:
Self-Storage Operations	$	710,874	$	650,887	$	2,096,018	$	1,525,596
Tenant Reinsurance	84,048		69,128		249,100		165,265
Total segment revenues	$	794,922	$	720,015	$	2,345,118	$	1,690,861
Operating expenses:
Self-Storage Operations	$	209,035	$	185,194	$	610,455	$	416,997
Tenant Reinsurance	17,510		19,130		55,646		37,701
Total segment operating expenses	$	226,545	$	204,324	$	666,101	$	454,698
Net operating income:
Self-Storage Operations	$	501,839	$	465,693	$	1,485,563	$	1,108,599
Tenant Reinsurance	66,538		49,998		193,454		127,564
Total segment net operating income:	$	568,377	$	515,691	$	1,679,017	$	1,236,163
Other components of net income:
Management fees and other income	$	29,882	$	28,019	$	89,888	$	71,609
Life Storage Merger transition costs	—		(54,174)		—		(54,174)
General and administrative expense	(39,750)		(37,406)		(123,373)		(107,011)
Depreciation and amortization expense	(195,046)		(152,338)		(586,821)		(309,914)
Loss on real estate assets held for sale	(8,961)		—		(63,620)		—
Interest expense	(142,855)		(122,899)		(412,875)		(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)		(8,228)		(32,563)		(8,228)
Interest income	34,947		22,092		89,746		62,607
Equity in earnings and dividend income from unconsolidated real estate entities	16,246		15,043		48,508		38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets	13,730		—		13,730		—
Impairment of trade name	(51,763)		—		(51,763)		—
Income tax expense	(10,857)		(6,944)		(27,443)		(17,238)
Net income	$	202,945	$	198,856	$	622,431	$	623,046

16.    COMMITMENTS AND CONTINGENCIES

As of September 30, 2024, the Company was under agreement to acquire seven stores at a total purchase price of $74,300. Acquisitions of all seven stores are scheduled to close in 2024.

29

EXTRA SPACE STORAGE INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited) (continued)

Amounts in thousands, except store and share data, unless otherwise stated

As of September 30, 2024, the Company was involved in various legal proceedings and was subject to various claims and complaints arising in the ordinary course of business. Because litigation is inherently unpredictable, the outcome of these matters cannot presently be determined with any degree of certainty. In accordance with applicable accounting guidance, management establishes an accrued liability for litigation when those matters present loss contingencies that are both probable and reasonably estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. The estimated loss, if any, is based upon currently available information and is subject to significant judgment, a variety of assumptions, and known and unknown uncertainties. The Company could in the future incur judgments or enter into settlements of claims that could have a material adverse effect on its results of operations in any particular period, notwithstanding the fact that the Company is currently vigorously defending any legal proceedings against it.

Although there can be no assurance, the Company is not aware of any material environmental liability, for which it believes it will be ultimately responsible, that could have a material adverse effect on its financial condition or results of operations. However, changes in applicable environmental laws and regulations, the uses and conditions of properties in the vicinity of the Company’s stores, the activities of its tenants and other environmental conditions of which the Company is unaware with respect to its stores could result in future material environmental liabilities.

30

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

CAUTIONARY LANGUAGE

The following discussion and analysis should be read in conjunction with our unaudited “Condensed Consolidated Financial Statements” and the “Notes to Condensed Consolidated Financial Statements (unaudited)” appearing elsewhere in this report and the “Consolidated Financial Statements,” “Notes to Consolidated Financial Statements” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” contained in our Form 10-K for the year ended December 31, 2023. We make statements in this section that are forward-looking statements within the meaning of the federal securities laws. For a complete discussion of forward-looking statements, see the section in this Form 10-Q entitled “Statement on Forward-Looking Information.”

CRITICAL ACCOUNTING POLICIES

Our discussion and analysis of our financial condition and results of operations are based on our unaudited condensed consolidated financial statements contained elsewhere in this report, which have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). Our notes to the unaudited condensed consolidated financial statements contained elsewhere in this report and the audited financial statements contained in our Form 10-K for the year ended December 31, 2023 describe the significant accounting policies essential to our unaudited condensed consolidated financial statements. Preparation of our financial statements requires estimates, judgments and assumptions. We believe that the estimates, judgments and assumptions that we have used are appropriate and correct based on information available at the time they were made. These estimates, judgments and assumptions can affect our reported assets and liabilities as of the date of the financial statements, as well as the reported revenues and expenses during the period presented. If there are material differences between these estimates, judgments and assumptions and actual facts, our financial statements may be affected.

In many cases, the accounting treatment of a particular transaction is specifically dictated by GAAP and does not require our judgment in its application. There are areas in which our judgment in selecting among available alternatives would not produce a materially different result, but there are some areas in which our judgment in selecting among available alternatives would produce a materially different result. See the notes to the unaudited condensed consolidated financial statements that contain additional information regarding our accounting policies and other disclosures.

OVERVIEW

We are a fully integrated, self-administered and self-managed real estate investment trust (“REIT”), formed to own, operate, manage, acquire, develop and redevelop self-storage properties (“stores”). We derive substantially all of our revenues from our two segments: storage operations and tenant reinsurance. Primary sources of revenue for our storage operations segment include rents received from tenants under leases at each of our wholly-owned stores. Our operating results depend materially on our ability to lease available self-storage units, to actively manage unit rental rates, and on the ability of our tenants to make required rental payments. Consequently, management spends a significant portion of their time maximizing cash flows from our diverse portfolio of stores. Revenue from our tenant reinsurance segment consists of insurance revenues from the reinsurance of risks relating to the loss of goods stored by tenants in our stores.

Our stores are generally situated in highly visible locations clustered around large population centers. The clustering of our assets around these population centers enables us to reduce our operating costs through economies of scale. To maximize the performance of our stores, we employ industry-leading revenue management systems. Developed by our management team, these systems enable us to analyze, set and adjust rental rates in real time across our portfolio in order to respond to changing market conditions. We believe our systems and processes allow us to more pro-actively manage revenues.

We operate in competitive markets, often where consumers have multiple stores from which to choose. Competition has impacted, and will continue to impact, our store results. We experience seasonal fluctuations in occupancy levels, with occupancy levels generally higher in the summer months due to increased moving activity. We believe that we are able to respond quickly and effectively to changes in local, regional and national economic conditions by adjusting rental rates through the combination of our revenue management team and our industry leading technology systems. We consider a store to be in the lease-up stage after it has been issued a certificate of occupancy, but before it has achieved stabilization. We consider a store to be stabilized once it has achieved either an 80% occupancy rate for a full year measured as of January 1 of the current year, or has been open for three years prior to January 1 of the current year.

31

PROPERTIES

As of September 30, 2024, we owned or had ownership interests in 2,401 operating stores. Of these stores, 1,934 are wholly-owned, seven are in consolidated joint ventures, and 460 are in unconsolidated joint ventures. In addition, we managed an additional 1,461 stores for third parties bringing the total number of stores which we own and/or manage to 3,862. These stores are located in 42 states and Washington, D.C. The majority of our stores are clustered around large population centers. The clustering of assets around these population centers enables us to reduce our operating costs through economies of scale. Our acquisitions have given us an increased scale in many core markets as well as a foothold in many markets where we had no previous presence.

As of September 30, 2024, approximately 2,245,000 tenants were leasing storage units at the operating stores that we own and/or manage, primarily on a month-to-month basis, providing the flexibility to increase rental rates over time as market conditions permit. Existing tenants generally receive rate increases at least annually, for which no direct correlation has been drawn to our vacancy trends. Although leases are short-term in duration, the typical tenant tends to remain at our stores for an extended period of time. For stores that were stabilized as of September 30, 2024, the average length of stay for tenants who have vacated was approximately 17.2 months.

The average annual rent per square foot for our existing customers at stabilized stores, net of discounts and bad debt, was $20.55 for the three months ended September 30, 2024, compared to $20.73 for the three months ended September 30, 2023. Average annual rent per square foot for new leases was $13.49 for the three months ended September 30, 2024, compared to $15.63 for the three months ended September 30, 2023. The average discounts, as a percentage of rental revenues, at all stabilized properties during these periods were 2.2% and 2.7%, respectively.

Our store portfolio is made up of different types of construction and building configurations. Most often sites are what we consider “hybrid” stores, a mix of drive-up and multi-floor buildings.

32

The following table presents additional information regarding net rentable square feet and the number of stores by state.

	September 30, 2024
	REIT Owned		Joint Venture Owned		Managed		Total
Location	Property Count(1)	Net Rentable Square Feet	Property Count	Net Rentable Square Feet	Property Count	Net Rentable Square Feet	Property Count	Net Rentable Square Feet
Alabama	38	2,990,107	2	150,969	15	994,955	55	4,136,031
Arizona	48	3,621,884	25	2,027,293	45	3,748,880	118	9,398,057
California	220	18,041,792	50	3,714,549	132	12,329,788	402	34,086,129
Colorado	27	1,890,586	13	937,965	33	2,440,880	73	5,269,431
Connecticut	23	1,756,536	8	713,087	15	983,937	46	3,453,560
Delaware	—	—	2	143,640	4	307,386	6	451,026
Florida	255	19,260,720	53	4,433,781	187	14,635,628	495	38,330,129
Georgia	119	9,141,475	23	1,929,439	60	4,657,162	202	15,728,076
Hawaii	14	941,374	—	—	4	257,950	18	1,199,324
Idaho	2	131,834	—	—	3	290,557	5	422,391
Illinois	107	7,670,099	12	938,482	52	4,024,365	171	12,632,946
Indiana	92	4,045,657	1	57,760	26	1,974,449	119	6,077,866
Iowa	—	—	—	—	1	86,929	1	86,929
Kansas	1	50,314	2	108,696	4	314,229	7	473,239
Kentucky	15	1,093,568	1	51,641	15	1,190,698	31	2,335,907
Louisiana	10	771,178	—	—	17	1,218,171	27	1,989,349
Maine	5	354,562	—	—	11	720,321	16	1,074,883
Maryland	44	3,508,613	11	898,914	52	3,797,553	107	8,205,080
Massachusetts	65	4,142,158	16	984,402	39	2,496,049	120	7,622,609
Michigan	11	847,643	4	308,502	11	880,868	26	2,037,013
Minnesota	8	709,260	8	646,373	16	1,192,663	32	2,548,296
Mississippi	7	561,604			6	534,353	13	1,095,957
Missouri	29	2,349,756	7	507,229	21	1,687,708	57	4,544,693
Nebraska	—	—	—	—	4	372,170	4	372,170
Nevada	32	2,842,903	9	837,295	13	1,277,329	54	4,957,527
New Hampshire	17	1,275,721	2	84,485	13	647,270	32	2,007,476
New Jersey	89	7,088,242	33	2,620,914	67	5,184,084	189	14,893,240
New Mexico	12	760,505	10	681,210	15	1,083,843	37	2,525,558
New York	79	5,695,292	28	2,316,447	88	6,293,317	195	14,305,056
North Carolina	54	3,910,838	6	476,949	40	3,249,760	100	7,637,547
Ohio	50	3,429,690	5	327,017	21	1,599,744	76	5,356,451
Oklahoma	4	269,183	—	—	27	1,776,920	31	2,046,103
Oregon	8	549,817	2	166,658	6	431,397	16	1,147,872
Pennsylvania	31	2,396,689	12	940,193	55	4,065,795	98	7,402,677
Rhode Island	6	350,367	1	95,724	7	535,648	14	981,739
South Carolina	46	3,377,983	5	309,213	37	3,117,614	88	6,804,810
Tennessee	30	2,451,594	16	1,092,041	28	1,922,770	74	5,466,405
Texas	244	20,056,222	71	5,495,534	155	12,860,658	470	38,412,414
Utah	10	733,318	—	—	40	3,266,277	50	3,999,595
Virginia	73	5,943,181	10	758,721	36	2,518,227	119	9,220,129
Washington	14	1,092,803	2	199,385	17	1,376,795	33	2,668,983
Washington, DC	1	100,203	1	104,206	6	534,269	8	738,678
Wisconsin	1	87,038	9	881,910	17	1,538,992	27	2,507,940
Totals	1,941	146,292,309	460	35,940,624	1,461	114,418,358	3,862	296,651,291

(1)    Includes seven consolidated joint ventures and excludes approximately 18,200 units related to Bargold.

33

RESULTS OF OPERATIONS

Amounts in thousands, except store and share data

Comparison of the three and nine months ended September 30, 2024 and 2023

Overview

Results for the three and nine months ended September 30, 2024 included the operations of 2,401 stores (1,934 wholly-owned, seven in consolidated joint ventures, and 460 in joint ventures accounted for using the equity method) compared to the results for the three and nine months ended September 30, 2023, which included the operations of 2,369 stores (1,896 wholly-owned, two in a consolidated joint venture, and 471 in joint ventures accounted for using the equity method).

Revenues

The following table presents information on revenues earned for the periods indicated:

	For the Three Months Ended September 30,								For the Nine Months Ended September 30,
	2024		2023		$ Change		% Change		2024		2023		$ Change		% Change
Revenues:
Property rental	$	710,874	$	650,887	$	59,987	9.2	%	$	2,096,018	$	1,525,596	$	570,422	37.4	%
Tenant reinsurance	84,048		69,128		14,920		21.6	%	249,100		165,265		83,835		50.7	%
Management fees and other income	29,882		28,019		1,863		6.6	%	89,888		71,609		18,279		25.5	%
Total revenues	$	824,804	$	748,034	$	76,770	10.3	%	$	2,435,006	$	1,762,470	$	672,536	38.2	%

Property Rental—The increase in property rental revenues for the nine months ended September 30, 2024 was primarily the result of an increase of $561,324 associated with the merger of Life Storage (the “Life Storage Merger”), other acquisitions completed in 2023, and acquisitions completed in the first nine months of 2024. We acquired 771 wholly-owned stores in 2023 and an additional 20 wholly-owned stores during the nine months ended September 30, 2024. The Life Storage Merger occurred on July 20, 2023; therefore the three months ended September 30, 2024 include the additional store count for the full quarter compared to the three months ended September 30, 2023 only including the significantly increased store count from the Merger date forward.

Tenant Reinsurance—The increase in tenant reinsurance revenues was due primarily to an increase in the number of stores operated. The three and nine months ended September 30, 2024 include the larger store count from the Life Storage Merger for the entire respective periods, while the results for the three and nine months ended September 30, 2023 only include the Life Storage stores from July 20, 2023 forward. We operated 3,862 stores at September 30, 2024 compared to 3,651 stores at September 30, 2023.

Management Fees and Other Income—Management fees and other income primarily represent the fees collected for our management of stores owned by third parties and unconsolidated joint ventures and other transaction fee income. The increase for the nine months ended September 30, 2024 was due to both an increase in the number of stores managed and an increase in the overall revenue of stores under management when compared to the same period last year. As of September 30, 2024, we managed 1,921 stores for unconsolidated joint ventures and third parties, compared to 1,755 stores as of September 30, 2023.

34

Expenses

The following table presents information on expenses for the periods indicated:

	For the Three Months Ended September 30,								For the Nine Months Ended September 30,
	2024		2023		$ Change		% Change		2024		2023		$ Change		% Change
Expenses:
Property operations	$	209,035	$	185,194	$	23,841	12.9	%	$	610,455	$	416,997	$	193,458	46.4	%
Tenant reinsurance	17,510		19,130		(1,620)		(8.5)	%	55,646		37,701		17,945		47.6	%
Life Storage Merger transition costs	—		54,174		(54,174)		(100.0)	%	—		54,174		(54,174)		(100.0)	%
General and administrative	39,750		37,406		2,344		6.3	%	123,373		107,011		16,362		15.3	%
Depreciation and amortization	195,046		152,338		42,708		28.0	%	586,821		309,914		276,907		89.3	%
Total expenses	$	461,341	$	448,242	$	13,099	2.9	%	$	1,376,295	$	925,797	$	450,498	48.7	%

Property Operations—The increase in property operations expense during the three and nine months ended September 30, 2024 consists primarily of an increase of $174,964 related to the Life Storage Merger and acquisitions completed in the first nine months of 2024. The Life Storage Merger occurred on July 20, 2023; therefore the three and nine months ended September 30, 2024 include the additional store count for the full quarter, as compared to the three and nine months ended September 30, 2023 only including the significantly increased store count from acquisition date forward. We acquired 771 wholly-owned stores in 2023 and an additional 20 wholly-owned stores during the nine months ended September 30, 2024. Additionally, for the three and nine months ended September 30, 2024 there was an increase of $16,139 at our stabilized stores primarily due to property and casualty insurance, payroll, marketing, and property tax, partially offset by utilities.

Tenant Reinsurance—Tenant reinsurance expense represents the costs that are incurred to provide tenant reinsurance. The increase is largely due to the number of stores operated during each period. The three and nine months ended September 30, 2024 include the larger store count from the Life Storage Merger for the entire respective periods, while the results for the three and nine months ended September 30, 2023 only include those stores from July 20, 2023 forward. We operated 3,862 stores at September 30, 2024 compared to 3,651 stores at September 30, 2023.

Life Storage Merger Transitions Costs— Represents the costs that were incurred as part of the Life Storage Merger in July 2023 that did not meet the definition of transaction costs and primarily consist of severance paid as part of employment agreements with certain employees and officers of Life Storage.

General and Administrative—General and administrative expenses primarily include all expenses not directly related to our stores, including corporate payroll, office expense, office rent, travel and professional fees. These expenses are recognized as incurred. Our overall General and Administrative expense has increased primarily as a result of our increased size through acquisitions, business combinations and growth through our joint venture partners and managed portfolio.

Depreciation and Amortization—Depreciation and amortization expense increased as a result of the acquisition of new stores. We acquired 771 wholly-owned stores in 2023 (757 wholly-owned stores in the Life Storage Merger on July 20, 2023) and an additional 20 wholly-owned stores during the nine months ended September 30, 2024. As a result, depreciation expense was higher for the three and nine months ended September 30, 2024 as compared to the three and nine months ended September 30, 2023. Additionally, the increase relates to the amortization of intangibles recorded as part of the Life Storage Merger.

35

Other Revenues and Expenses

The following table presents information on other revenues and expenses for the periods indicated:

	For the Three Months Ended September 30,								For the Nine Months Ended September 30,
	2024		2023		$ Change		% Change		2024		2023		$ Change		% Change
Loss on real estate assets held for sale	$	(8,961)	$	—	$	(8,961)	100.0	%	$	(63,620)	$	—	$	(63,620)	100.0	%
Interest expense	(142,855)		(122,899)		(19,956)		16.2	%	(412,875)		(289,370)		(123,505)		42.7	%
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)		(8,228)		(2,777)		33.8	%	(32,563)		(8,228)		(24,335)		295.8	%
Interest income	34,947		22,092		12,855		58.2	%	89,746		62,607		27,139		43.3	%
Equity in earnings and dividend income from unconsolidated real estate entities	16,246		15,043		1,203		8.0	%	48,508		38,602		9,906		25.7	%
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	13,730		—		13,730		100.0	%	13,730		—		13,730		100.0	%
Impairment of Life Storage trade name	(51,763)		—		(51,763)		100.0	%	(51,763)		—		(51,763)		100.0	%
Income tax expense	(10,857)		(6,944)		(3,913)		56.4	%	(27,443)		(17,238)		(10,205)		59.2	%
Total other revenues & expenses, net	$	(160,518)	$	(100,936)	$	(59,582)	59.0	%	$	(436,280)	$	(213,627)	$	(222,653)	104.2	%

Loss on real estate assets held for sale—As of September 30, 2024, we had 17 stores classified as held for sale. Of the 17 stores, nine had an estimated fair value, net of selling costs, less than the carrying value of the assets. During the three and nine months ended September 30, 2024, we recorded estimated losses of $8,961 and $63,620, respectively.

Interest Expense—The increase in interest expense during the three and nine months ended September 30, 2024 was primarily the result of higher outstanding debt and a higher weighted average interest rate compared to the same period in the prior year. As of September 30, 2024, we had approximately $11.8 billion in total face value of debt, compared to approximately $11.3 billion as of September 30, 2023. The total face value of debt as of September 30, 2023 reflected an additional $3.7 billion of debt issued in connection with closing the Life Storage Merger on July 20, 2023.

Non-cash Interest Expense Related to Amortization of Discount on Life Storage Unsecured Senior Notes—Represents the amortization of the discount assigned to the fair value of the Life Storage unsecured senior notes assumed as part of the Life Storage Merger.

Interest Income—Interest income represents interest earned on variable interest rate bridge loans, debt securities and on notes receivable from Common and Preferred Operating Partnership unit holders. The increase in interest income during the three and nine months ended September 30, 2024 was primarily the result of an increase in the amount of bridge loans outstanding combined with an increase in interest rates. The balance of bridge loans was $1,032,244 as of September 30, 2024, compared to $533,000 as of September 30, 2023.

Equity in Earnings and Dividend Income from Unconsolidated Real Estate Entities—Equity in earnings of unconsolidated real estate entities represents the income earned through our ownership interests in unconsolidated joint ventures. In these joint ventures, we and our joint venture partners generally receive a preferred return on our invested capital. To the extent that cash or profits in excess of these preferred returns are generated, we receive a higher percentage of the excess cash or profits. We added a total of 154 stores to new and existing joint ventures (145 stores from the Life Storage Merger) during 2023. These additional joint ventures have contributed to the increase. Dividend income represents dividends from our investment in preferred stock of SmartStop Self Storage REIT, Inc. and Strategic Storage Trust VI, Inc.

Equity in Earnings of Unconsolidated Real Estate Ventures - Gain on Sale of Real Estate Assets—In August 2024, the ESS Bristol Investments LLC joint venture sold five of its eight stores to another of our unconsolidated joint ventures, and we recognized a gain of $10,324 for our pro rata share of the transaction. In September 2024, we sold our membership interest in the Alan Jathoo JV LLC unconsolidated joint venture, which held nine stores, to our partner and recognized a gain of $3,406 on the transaction.

Impairment of Life Storage Trade Name—During the three months ended September 30, 2024, we decided to operate all stores under a single brand. As a result of that decision, we deemed the Life Storage trade name intangible asset to be impaired and recognized a loss for the full value of the asset.

36

Income Tax Expense—The increase in income tax expense for the three and nine months ended September 30, 2024 was primarily the result of an increase in book income and a decrease in permanent tax deductions related to stock awards.

FUNDS FROM OPERATIONS

Funds from operations (“FFO”) provides relevant and meaningful information about our operating performance that is necessary, along with net income and cash flows, for an understanding of our operating results. We believe FFO is a meaningful disclosure as a supplement to net earnings. Net earnings assume that the values of real estate assets diminish predictably over time as reflected through depreciation and amortization expenses. The values of real estate assets fluctuate due to market conditions and we believe FFO more accurately reflects the value of our real estate assets. FFO is defined by the National Association of Real Estate Investment Trusts, Inc. (“NAREIT”) as net income computed in accordance with GAAP, excluding gains or losses on sales of operating stores and impairment write downs of depreciable real estate assets, plus real estate related depreciation and amortization and after adjustments to record unconsolidated partnerships and joint ventures on the same basis. We believe that to further understand our performance, FFO should be considered along with the reported net income and cash flows in accordance with GAAP, as presented in our condensed consolidated financial statements. FFO should not be considered a replacement of net income computed in accordance with GAAP.

The computation of FFO may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently. FFO does not represent cash generated from operating activities determined in accordance with GAAP, and should not be considered as an alternative to net income as an indication of our performance, as an alternative to net cash flow from operating activities, as a measure of our liquidity, or as an indicator of our ability to make cash distributions.

The following table presents the calculation of FFO for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net income attributable to common stockholders	$	193,210	$	188,350	$	592,194	$	587,064
Adjustments:
Real estate depreciation	154,573		121,635		462,162		265,268
Amortization of intangibles	28,160		21,270		85,581		29,049
Loss on real estate assets held for sale	8,961		—		63,620		—
Unconsolidated joint venture real estate depreciation and amortization	7,922		6,698		23,771		16,359
Unconsolidated joint venture gain on sale of real estate assets	(13,730)		—		(13,730)		—
Distributions paid on Series A Preferred Operating Partnership units	—		—		—		(159)
Income allocated to Operating Partnership noncontrolling interests	9,735		10,506		30,237		35,982
Funds from operations attributable to common stockholders and unit holders	$	388,831	$	348,459	$	1,243,835	$	933,563

37

SAME-STORE RESULTS

Our same-store pool for the periods presented consists of 1,075 stores that are wholly-owned and operated and that were stabilized by the first day of the earliest calendar year presented. We consider a store to be stabilized once it has been open for three years or has sustained average square foot occupancy of 80% or more for one calendar year. We believe that by providing same-store results from a stabilized pool of stores, with accompanying operating metrics including, but not limited to: occupancy, rental revenue growth, operating expense growth, net operating income growth, etc., stockholders and potential investors are able to evaluate operating performance without the effects of non-stabilized occupancy levels, rent levels, expense levels, acquisitions or completed developments. Same-store results should not be used as a basis for future same-store performance or for the performance of our stores as a whole. The following table presents operating data for our same-store portfolio.

	For the Three Months Ended September 30,				Percent		For the Nine Months Ended September 30,				Percent
	2024		2023		Change		2024		2023		Change
Same-store rental revenues
Net rental income	$	407,130	$	407,565	(0.1)	%	$	1,207,032	$	1,200,995	0.5	%
Other operating income	16,907		17,697		(4.5)	%	48,860		49,360		(1.0)	%
Total same-store rental revenues	424,037		425,262		(0.3)	%	1,255,892		1,250,355		0.4	%
Same-store operating expenses
Payroll and benefits	23,408		23,245		0.7	%	71,743		68,118		5.3	%
Marketing	7,928		7,822		1.4	%	25,895		22,601		14.6	%
Office expense	12,878		13,103		(1.7)	%	39,172		39,025		0.4	%
Property operating expense	9,916		9,966		(0.5)	%	28,446		29,833		(4.6)	%
Repairs and maintenance	6,966		6,431		8.3	%	21,326		19,894		7.2	%
Property taxes	44,020		41,750		5.4	%	121,562		116,342		4.5	%
Insurance	4,663		5,375		(13.2)	%	14,950		13,587		10.0	%
Total same-store operating expenses	109,779		107,692		1.9	%	323,094		309,400		4.4	%
Same-store net operating income	$	314,258	$	317,570	(1.0)	%	$	932,798	$	940,955	(0.9)	%
Same-store square foot occupancy as of year end	94.3%		93.7%				94.3%		93.7%
Average same-store square foot occupancy	94.4%		93.9%				93.9%		93.4%
Properties included in same-store	1,075		1,075				1,075		1,075

38

The following table presents a reconciliation of same-store net operating income to net income as presented on our condensed consolidated statements of operations for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net Income	$	202,945	$	198,856	$	622,431	$	623,046
Adjusted to exclude:
Loss on real estate assets held for sale	8,961		—		63,620		—
Equity in earnings and dividend income from unconsolidated real estate entities	(16,246)		(15,043)		(48,508)		(38,602)
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	(13,730)		—		(13,730)		—
Interest expense	142,855		122,899		412,875		289,370
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	11,005		8,228		32,563		8,228
Depreciation and amortization	195,046		152,338		586,821		309,914
Income tax expense	10,857		6,944		27,443		17,238
Life Storage Merger transition costs	—		54,174		—		54,174
General and administrative	39,750		37,406		123,373		107,011
Impairment of Life Storage trade name	51,763		—		51,763		—
Management fees, other income and interest income	(64,829)		(50,111)		(179,634)		(134,216)
Net tenant insurance	(66,538)		(49,998)		(193,454)		(127,564)
Non same-store rental revenue	(286,837)		(225,625)		(840,126)		(275,241)
Non same-store operating expense	99,256		77,502		287,361		107,597
Total same-store net operating income	$	314,258	$	317,570	$	932,798	$	940,955
Same-store rental revenues	$	424,037	$	425,262	$	1,255,892	$	1,250,355
Same-store operating expenses	109,779		107,692		323,094		309,400
Same-store net operating income	$	314,258	$	317,570	$	932,798	$	940,955

39

CASH FLOWS

Cash flows from operating activities for the nine months ended September 30, 2024 increased when compared to the same period in the prior year. Cash flows used in investing activities relate primarily to our acquisition and development of new stores, sales of stores, investments in unconsolidated real estate entities notes receivable from bridge loans, and fluctuate depending on our actions in those areas. Cash flows from financing activities depend primarily on our debt and equity financing activities. A summary of cash flows along with significant components are as follows:

	For the Nine Months Ended September 30,
	2024		2023
Net cash provided by operating activities	$	1,479,151	$	1,037,959
Net cash used in investing activities	(877,503)		(1,636,052)
Net cash (used in) provided by financing activities	(612,406)		723,479
Significant components of net cash flow included:
Net income	$	622,431	$	623,046
Depreciation and amortization	586,821		309,914
Loss on real estate assets held for sale	63,620		—
Impairment of Life Storage trade name	51,763		—
Accounts payable, accrued expenses and other liabilities	63,726		117,940
Acquisition and development of real estate assets	(461,633)		(263,866)
Life Storage Merger, net of cash acquired	—		(1,182,411)
Investment in unconsolidated real estate entities	(7,175)		(179,258)
Issuance and purchase of notes receivable, net of principal payments	(585,731)		(137,198)
Proceeds from sale of notes receivable	175,335		134,064
Proceeds from unsecured term loans and senior notes and revolving lines of credit	5,542,362		5,194,665
Principal payments on unsecured term loans and senior notes and revolving lines of credit	(6,062,896)		(4,617,755)
Proceeds from issuance of public bonds, net	1,000,000		950,000
Dividends paid on common stock	(1,031,044)		(704,069)

We believe that cash flows generated by operations, along with our existing cash and cash equivalents, the availability of funds under our existing lines of credit, and our access to capital markets will be sufficient to meet all of our reasonably anticipated cash needs during the next twelve months. These cash needs include operating expenses, monthly debt service payments, recurring capital expenditures, acquisitions, funding for the bridge loan program, building redevelopments and expansions, distributions to unit holders and dividends to stockholders necessary to maintain our REIT qualification.

We expect to generate positive cash flow from operations in 2024, and we consider projected cash flows in our sources and uses of cash. These cash flows are principally derived from rents paid by our tenants. A significant deterioration in projected cash flows from operations could cause us to increase our reliance on available funds under our existing lines of credit, curtail planned capital expenditures, or seek other additional sources of financing.

LIQUIDITY AND CAPITAL RESOURCES

As of September 30, 2024, we had $88,931 available in cash and cash equivalents. Our cash and cash equivalents are held in accounts managed by third party financial institutions and consist of invested cash and cash in our operating accounts. During 2024 and 2023, we experienced no loss or lack of access to our cash and cash equivalents; however, there can be no assurance that access to our cash and cash equivalents will not be impacted by adverse conditions in the financial markets.

As of September 30, 2024, we had $11,827,208 face value of debt, resulting in a debt to total enterprise value ratio of 22.8%. As of September 30, 2024, the ratio of total fixed-rate debt and other instruments to total debt was 78.3% ($9,256,376 total fixed-rate debt including $1,382,568 on which we have interest rate swaps that have been included as fixed-rate debt). The weighted average interest rate of the total of fixed- and variable-rate debt at September 30, 2024 was 4.5%. Certain real estate assets are pledged as collateral for our debt. We are subject to certain restrictive covenants relating to our outstanding debt. We were in compliance with all financial covenants at September 30, 2024.

40

We expect to fund our short-term liquidity requirements, including operating expenses, recurring capital expenditures, dividends to stockholders, distributions to holders of Operating Partnership units and interest on our outstanding indebtedness, out of our operating cash flow, cash on hand and borrowings under our revolving lines of credit. In addition, we are pursuing additional sources of financing based on anticipated funding needs and growth assumptions.

We hold a BBB+/Stable rating from S&P, which was upgraded from BBB/Stable in July 2023 in connection with the Life Storage Merger, and a Baa2 rating from Moody's Investors Service. We intend to manage our balance sheet to maintain these ratings. Certain of our real estate assets are pledged as collateral for our debt. As of September 30, 2024, we had a total of 1,705 unencumbered stores as defined by our public bonds. Our unencumbered asset value was calculated as $29,442,214 and our total asset value was calculated as $34,958,852 according to the calculations as defined by our public bonds.

Our liquidity needs consist primarily of operating expenses, monthly debt service payments, recurring capital expenditures, dividends to stockholders and distributions to unit holders necessary to maintain our REIT qualification. We may from time to time seek to repurchase our outstanding debt, shares of common stock or other securities in open market purchases, privately negotiated transactions or otherwise. Such repurchases, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. In addition, we evaluate, on an ongoing basis, the merits of strategic acquisitions and other relationships, which may require us to raise additional funds. We may also use Operating Partnership units as currency to fund acquisitions from self-storage owners.

On April 15, 2024, we entered into an equity distribution agreement (the “Equity Distribution Agreement”) with certain sales agents and forward purchasers named therein. Under the terms of the Equity Distribution Agreement, we may issue and sell, and the forward purchasers may sell, from time to time through or to the sales agents, shares of our common stock having an aggregate offering price of up to $800 million. The shares of common stock will be offered pursuant to our effective registration statement on Form S-3 (Registration Statement No. 333-278690) previously filed with and declared effective by the Securities and Exchange Commission (the “SEC”) and a prospectus supplement and accompanying prospectus, filed with the SEC. As of September 30, 2024, no shares have been sold under the Equity Distribution Agreement, which we refer to as our "at the market" equity program.

OFF-BALANCE SHEET ARRANGEMENTS

Except as disclosed in the notes to our consolidated financial statements of our most recently filed Annual Report on Form 10-K, we do not currently have any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purposes entities, which typically are established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. Further, except as disclosed in the notes to our condensed consolidated financial statements, we have not guaranteed any obligations of unconsolidated entities, nor do we have any commitments or intent to provide funding to any such entities. Accordingly, we are not materially exposed to any financing, liquidity, market or credit risk that could arise if we had engaged in these relationships.

SEASONALITY

The self-storage business is subject to seasonal fluctuations. A greater portion of revenues and profits are realized from May through September. Historically, our highest level of occupancy has been at the end of July, while our lowest level of occupancy has been in late February and early March. Results for any quarter may not be indicative of the results that may be achieved for the full fiscal year.

41

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market Risk

Market risk refers to the risk of loss from adverse changes in market prices and interest rates. Our future income, cash flows and fair values of financial instruments are dependent upon prevailing market interest rates.

Interest Rate Risk

Interest rate risk is highly sensitive to many factors, including governmental monetary and tax policies, domestic and international economic and political considerations and other factors beyond our control.

As of September 30, 2024, we had approximately $11.8 billion in total face value of debt, of which approximately $2.6 billion was subject to variable interest rates (excluding debt with interest rate swaps). If SOFR was to increase or decrease by 100 basis points, the increase or decrease in interest expense on the variable-rate debt would increase or decrease future earnings and cash flows by approximately $25.7 million annually.

Interest rate risk amounts were determined by considering the impact of hypothetical interest rates on our financial instruments. These analyses do not consider the effect of any change in overall economic activity that could occur. Further, in the event of a change of that magnitude, we may take actions to further mitigate our exposure to the change. However, due to the uncertainty of the specific actions that would be taken and their possible effects, these analyses assume no changes in our financial structure.

ITEM 4.    CONTROLS AND PROCEDURES

(1)Disclosure Controls and Procedures

We maintain disclosure controls and procedures to ensure that information required to be disclosed in the reports we file pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), are recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based on the definition of “disclosure controls and procedures” in Rule 13a-15(e) of the Exchange Act. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can only provide a reasonable assurance of achieving the desired control objectives, and in reaching a reasonable level of assurance, management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

We have a disclosure committee that is responsible for considering the materiality of information and determining our disclosure obligations on a timely basis. The disclosure committee meets quarterly and reports directly to our Chief Executive Officer and Chief Financial Officer.

We carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this report. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of the end of the period covered by this report.

(2)Changes in internal control over financial reporting

There were no changes in our internal control over financial reporting (as such term is defined in Exchange Act Rule 13a-15(f)) that occurred during our most recent quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II.     OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

We are involved in various legal proceedings and are subject to various claims and complaints arising in the ordinary course of business. Because litigation is inherently unpredictable, the outcome of these matters cannot presently be determined with any degree of certainty. In accordance with applicable accounting guidance, management establishes an accrued liability for litigation when those matters present loss contingencies that are both probable and reasonably estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. The estimated loss, if any, is based upon currently available information and is subject to significant judgment, a variety of assumptions, and known and unknown uncertainties. We could in the future incur judgments or enter into settlements of claims that could have a material adverse effect on our results of operations in any particular period, notwithstanding the fact that we are currently vigorously defending any legal proceedings against us.

ITEM 1A.    RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the factors discussed in “Part I. Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2023, which could materially affect our business, financial condition and results of operations. There have been no material changes to the risk factors described in the “Risk Factors” section in our Annual Report on Form 10-K for the year ended December 31, 2023. The risks described in our Annual Report on Form 10-K and our Quarterly Reports on Form 10-Q are not the only risks facing our company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially adversely affect our business, financial condition and results of operations.

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

None.

ITEM 3.    DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.    MINE SAFETY DISCLOSURES

Not Applicable.

ITEM 5.    OTHER INFORMATION

During the three months ended September 30, 2024, none of our officers or directors adopted, modified or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non Rule 10b5-1 trading arrangement.”

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ITEM 6.    EXHIBITS

Exhibit Number	Exhibit Description	Incorporated by Reference			Filed Herewith
		Form	Date	Number
1.1	Equity Distribution Agreement, dated April 15, 2024, by and among Extra Space Storage Inc., Extra Space Storage LP, BMO Capital Markets Corp., BofA Securities, Inc., Citigroup Global Markets Inc., Jefferies LLC, J.P. Morgan Securities LLC, Regions Securities LLC, TD Securities (USA) LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC	S-3ASR	April 15, 2024	1.2
2.1	Agreement and Plan of Merger, dated as of April 2, 2023, by and among Extra Space Storage Inc., Extra Space Storage LP, Eros Merger Sub, LLC, Eros OP Merger Sub, LLC, Life Storage, Inc. and Life Storage LP	8-K	April 3, 2023	2.1
2.2	Amendment to Agreement and Plan of Merger, dated as of May 18, 2023, by and among Extra Space Storage Inc., Extra Space Storage LP, Eros Merger Sub, LLC, Eros OP Merger Sub, LLC, Life Storage, Inc. and Life Storage LP	8-K	July 20, 2023	2.2
3.1	Amended and Restated Articles of Incorporation of Extra Space Storage Inc.	S-11	August 10, 2004	3.1
3.2	Articles of Amendment of Extra Space Storage Inc., dated September 28, 2007.	8-K	October 3, 2007	3.1
3.3	Articles of Amendment of Extra Space Storage Inc., dated August 29, 2013.	8-K	August 29, 2013	3.1
3.4	Articles of Amendment of Extra Space Storage Inc., dated May 21, 2014.	8-K	May 28, 2014	3.1
3.5	Second Amended and Restated Bylaws of Extra Space Storage Inc.	8-K	January 17, 2018	3.1
3.6	Fourth Amended and Restated Agreement of Limited Partnership of Extra Space Storage LP.	8-K	December 6, 2013	10.1
4.1	Junior Subordinated Note	10-K	February 26, 2010	4.3
4.2	Description of Securities	10-K	February 25, 2020	4.6
4.3	Indenture, dated as of May 11, 2021, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Wells Fargo Bank, National Association, as trustee.	8-K	May 11, 2021	4.1
4.4	First Supplemental Indenture, dated as of May 11, 2021, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Wells Fargo Bank, National Association, as trustee, including the form of the Notes and the Guarantee.	8-K	May 11, 2021	4.2
4.5	Second Supplemental Indenture, dated as of September 22, 2021, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Wells Fargo Bank, National Association, as trustee, including the form of the Notes and the Guarantee.	8-K	September 22, 2021	4.2
4.6	Third Supplemental Indenture, dated as of March 31, 2022, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	March 31, 2022	4.2

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4.7	Fourth Supplemental Indenture, dated as of March 28, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	March 28, 2023	4.2
4.8	Fifth Supplemental Indenture, dated as of June 16, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	June 16, 2023	4.2
4.9	Sixth Supplemental Indenture, dated as of July 25, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	July 25, 2023	4.4
4.10	Seventh Supplemental Indenture, dated as of July 25, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	July 25, 2023	4.5
4.11	Eighth Supplemental Indenture, dated as of July 25, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	July 25, 2023	4.6
4.12	Ninth Supplemental Indenture, dated as of July 25, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	July 25, 2023	4.7
4.13	Tenth Supplemental Indenture, dated as of July 25, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	July 25, 2023	4.8
4.14	Eleventh Supplemental Indenture, dated as of December 1, 2023, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	December 1, 2023	4.2
4.15	Twelfth Supplemental Indenture, dated as of January 19, 2024, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	January 19, 2024	4.2
4.16	Thirteenth Supplemental Indenture, dated as of August 12, 2024, among Extra Space Storage LP, as issuer, Extra Space Storage Inc., ESS Holdings Business Trust I and ESS Holdings Business Trust II, as guarantors, and Computershare Trust Company, N.A., as trustee, including the form of the Notes and the Guarantee.	8-K	August 12, 2024	4.2

45

4.17	Base Indenture, dated as of June 20, 2016, among Life Storage, Inc., Life Storage LP and Wells Fargo Bank, National Association (incorporated by reference to Exhibit 4.2 to the Current Report on Form 10-K filed by Life Storage Inc. on February 24, 2023).	8-K	July 25, 2023	4.1
4.18	Sixth Supplemental Indenture, dated as of July 25, 2023, among Life Storage LP, as issuer, Life Storage LLC, as parent guarantor, and Computershare Trust Company, N.A., as trustee.	8-K	July 25, 2023	4.2
22.1	Issuer and Guarantors of Guaranteed Securities				X
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
32.1	Certifications of the Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.				X
101	The following materials from Extra Space Storage Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, are formatted in XBRL (eXtensible Business Reporting Language): (1) the Condensed Consolidated Balance Sheets, (2) the Condensed Consolidated Statements of Operations, (3) the Condensed Consolidated Statements of Comprehensive Income (4) the Condensed Consolidated Statement of Noncontrolling Interests and Equity, (5) the Condensed Consolidated Statements of Cash Flows and (6) notes to these financial statements.				X
104	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101).				X

46

SIGNATURES

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

 

	EXTRA SPACE STORAGE INC.
	Registrant
Date: November 4, 2024	/s/ Joseph D. Margolis
	Joseph D. Margolis
	Chief Executive Officer (Principal Executive Officer)
Date: November 4, 2024	/s/ P. Scott Stubbs
	P. Scott Stubbs
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

47

EX-22.1

Exhibit 22.1

Issuer and Guarantors of Guaranteed Securities

The following entities are included in the Obligated Group, as defined in the Annual Report on Form 10-K of Extra Space Storage Inc. to which this document is being filed as an exhibit, for the 3.500% Senior Notes due 2026, the 3.875% Senior Notes due 2027, the 5.700% Senior Notes due 2028, the 3.900% Senior Notes due 2029, the 4.000% Senior Notes due 2029, the 2.200% Senior Notes due 2030, the 2.550% Senior Notes due 2031, the 2.400% Senior Notes due 2031, the 2.350% Senior Notes due 2032, the 5.400% Senior Notes due 2034, and the 5.350% Senior Notes due 2035 (collectively, the "Notes"). The guarantors have fully and unconditionally guaranteed the Notes on a joint and several basis.

Name of Issuer or Guarantor	Reported as Issuer or Guarantor	State of Incorporation or Organization
Extra Space Storage LP	Issuer	Delaware
Extra Space Storage Inc.	Parent Guarantor	Maryland
ESS Holdings Business Trust I	Subsidiary Guarantor	Massachusetts
ESS Holdings Business Trust II	Subsidiary Guarantor	Massachusetts

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Joseph D. Margolis, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Extra Space Storage 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 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; and

5.The registrant’s other certifying officer 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 the registrant’s board of directors (or persons performing the equivalent functions):

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.

Date: November 4, 2024	By:	/s/ Joseph D. Margolis
	Name:	Joseph D. Margolis
	Title:	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, P. Scott Stubbs, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Extra Space Storage 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 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; and

5.The registrant’s other certifying officer 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 the registrant’s board of directors (or persons performing the equivalent functions):

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.

Date: November 4, 2024	By:	/s/ P. Scott Stubbs
	Name:	P. Scott Stubbs
	Title:	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer and Chief Financial Officer

Pursuant to

18 U.S.C. Section 1350,

as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

The undersigned, the Chief Executive Officer of Extra Space Storage Inc. (the “Company”), hereby certifies to his knowledge on the date hereof, pursuant to 18 U.S.C. 1350(a), as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 (the “Form 10-Q”), filed concurrently herewith by the Company, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Joseph D. Margolis
Name:	Joseph D. Margolis
Title:	Chief Executive Officer
Date:	November 4, 2024

The undersigned, the Chief Financial Officer of Extra Space Storage Inc. (the “Company”), hereby certifies to his knowledge on the date hereof, pursuant to 18 U.S.C. 1350(a), as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 (the “Form 10-Q”), filed concurrently herewith by the Company, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ P. Scott Stubbs
Name:	P. Scott Stubbs
Title:	Executive Vice President and Chief Financial Officer
Date:	November 4, 2024

XML

Cover - shares	9 Months Ended
	Sep. 30, 2024	Oct. 30, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-32269
Entity Registrant Name	EXTRA SPACE STORAGE INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	20-1076777
Entity Address, Address Line One	2795 East Cottonwood Parkway, Suite 300
Entity Address, City or Town	Salt Lake City
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84121
City Area Code	801
Local Phone Number	365-4600
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	EXR
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		211,983,569
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001289490
Current Fiscal Year End Date	--12-31

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets:
Real estate assets, net	$ 24,385,492	$ 24,555,873
Real estate assets - operating lease right-of-use assets	694,001	227,241
Investments in unconsolidated real estate entities	1,060,213	1,071,617
Investments in debt securities and notes receivable	1,338,619	904,769
Cash and cash equivalents	88,931	99,062
Other assets, net	495,861	597,700
Total assets	28,063,117	27,456,262
Liabilities, Noncontrolling Interests and Equity:
Secured notes payable, net	1,011,705	1,273,549
Unsecured term loans, net	2,194,894	2,650,581
Unsecured senior notes, net	7,437,231	6,410,618
Revolving lines of credit	884,000	682,000
Operating lease liabilities	706,491	236,515
Cash distributions in unconsolidated real estate ventures	74,173	71,069
Accounts payable and accrued expenses	388,757	334,518
Other liabilities	407,183	383,463
Total liabilities	13,104,434	12,042,313
Commitments and contingencies
Extra Space Storage Inc. stockholders' equity:
Preferred stock, $0.01 par value, 50,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.01 par value, 500,000,000 shares authorized, 211,981,742 and 211,278,803 shares issued and outstanding at September 30, 2024 and December 31, 2023, respectively	2,120	2,113
Additional paid-in capital	14,823,018	14,750,388
Accumulated other comprehensive income	3,340	17,435
Accumulated deficit	(817,865)	(379,015)
Total Extra Space Storage Inc. stockholders' equity	14,010,613	14,390,921
Noncontrolling interest represented by Preferred Operating Partnership units, net	191,306	222,360
Noncontrolling interests in Operating Partnership, net and other noncontrolling interests	756,764	800,668
Total noncontrolling interests and equity	14,958,683	15,413,949
Total liabilities, noncontrolling interests and equity	$ 28,063,117	$ 27,456,262

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	50,000,000	50,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, issued (in shares)	211,981,742	211,278,803
Common stock, outstanding (in shares)	211,981,742	211,278,803

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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues:
Property rental	$ 710,874	$ 650,887	$ 2,096,018	$ 1,525,596
Tenant reinsurance	84,048	69,128	249,100	165,265
Management fees and other income	29,882	28,019	89,888	71,609
Total revenues	824,804	748,034	2,435,006	1,762,470
Expenses:
Property operations	209,035	185,194	610,455	416,997
Tenant reinsurance	17,510	19,130	55,646	37,701
Life Storage Merger transition costs	0	54,174	0	54,174
General and administrative	39,750	37,406	123,373	107,011
Depreciation and amortization	195,046	152,338	586,821	309,914
Total expenses	461,341	448,242	1,376,295	925,797
Loss on real estate assets held for sale	(8,961)	0	(63,620)	0
Impairment of Life Storage trade name	(51,763)	0	(51,763)	0
Income from operations	302,739	299,792	943,328	836,673
Interest expense	(142,855)	(122,899)	(412,875)	(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)	(8,228)	(32,563)	(8,228)
Interest income	34,947	22,092	89,746	62,607
Income before equity in earnings and dividend income from unconsolidated real estate entities and income tax expense	183,826	190,757	587,636	601,682
Equity in earnings and dividend income from unconsolidated real estate entities	16,246	15,043	48,508	38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	13,730	0	13,730	0
Income tax expense	(10,857)	(6,944)	(27,443)	(17,238)
Net income	202,945	198,856	622,431	623,046
Net income allocated to Preferred Operating Partnership noncontrolling interests	(1,932)	(2,253)	(6,073)	(6,761)
Net income allocated to Operating Partnership and other noncontrolling interests	(7,803)	(8,253)	(24,164)	(29,221)
Net income attributable to common stockholders	$ 193,210	$ 188,350	$ 592,194	$ 587,064
Earnings per common share
Basic (in dollars per share)	$ 0.91	$ 0.96	$ 2.79	$ 3.78
Diluted (in dollars per share)	$ 0.91	$ 0.96	$ 2.79	$ 3.78
Weighted average number of shares
Basic (in shares)	211,698,436	195,324,444	211,522,578	155,112,071
Diluted (in shares)	220,298,870	195,328,020	220,177,692	155,116,149
Cash dividends paid per common share (in dollars per share)	$ 1.62	$ 1.62	$ 4.86	$ 4.86

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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 202,945	$ 198,856	$ 622,431	$ 623,046
Other comprehensive income:
Change in fair value of interest rate swaps	(24,887)	(2,264)	(14,691)	(4,175)
Total comprehensive income	178,058	196,592	607,740	618,871
Less: comprehensive income attributable to noncontrolling interests	8,749	10,395	29,641	35,693
Comprehensive income attributable to common stockholders	$ 169,309	$ 186,197	$ 578,099	$ 583,178

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Condensed Consolidated Statements of Noncontrolling Interests and Equity - USD ($) $ in Thousands	Total	Redemption of units for stock	Series A Units Redemption of units for stock	Series D Units Redemption of units for stock	Preferred Operating Partnership	Preferred Operating Partnership Redemption of units for stock	Preferred Operating Partnership Series A Units Redemption of units for stock	Preferred Operating Partnership Series D Units Redemption of units for stock	Operating Partnership	Operating Partnership Redemption of units for stock	Other	Common stock	Common stock Redemption of units for stock	Common stock Series A Units Redemption of units for stock	Common stock Series D Units Redemption of units for stock	Additional Paid-in Capital	Additional Paid-in Capital Redemption of units for stock	Additional Paid-in Capital Series A Units Redemption of units for stock	Additional Paid-in Capital Series D Units Redemption of units for stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2022	$ 4,078,274				$ 261,502				$ 556,095		$ 1,080	$ 1,339				$ 3,345,332				$ 48,798	$ (135,872)
Beginning balance (in shares) at Dec. 31, 2022												133,921,020
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		$ 0	$ (5,316)	$ 0			$ (16,339)	$ (22,064)		$ (163)				$ 8	$ 2		$ 163	$ 11,015	$ 22,062
Redemption of noncontrolling interests (in shares)													2,119	851,698	154,307
Life Storage Merger issuance of common stock and Operating Partnership units (in shares)												76,217,359
Life Storage Merger issuance of common stock and Operating Partnership units	11,602,808								249,470			$ 762				11,352,576
Noncontrolling interest in consolidated joint ventures	7,309										7,309
Net income (loss)	623,046				6,761				29,353		(132)										587,064
Other comprehensive loss	(4,175)								(289)											(3,886)
Distributions to Operating Partnership units held by noncontrolling interests	(43,003)				(6,921)				(36,082)
Dividends paid on common stock	(704,069)																				(704,069)
Issuance of common stock in connection with share based compensation (in shares)												144,640
Issuance of common stock in connection with share based compensation	19,433											$ 2				19,431
Taxes paid upon net settlement of share based compensation (in shares)												(8,074)
Taxes paid upon net settlement of share based compensation	(7,606)															(7,606)
Restricted stock grants cancelled (in shares)												(6,983)
Ending balance at Sep. 30, 2023	15,566,701				222,939				798,384		8,257	$ 2,113				14,742,973				44,912	(252,877)
Ending balance (in shares) at Sep. 30, 2023												211,276,086
Beginning balance at Jun. 30, 2023	4,035,407				222,940				553,610		3,079	$ 1,351				3,383,303				47,065	(175,941)
Beginning balance (in shares) at Jun. 30, 2023												135,058,897
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		0								(163)							163
Redemption of noncontrolling interests (in shares)													2,119
Life Storage Merger issuance of common stock and Operating Partnership units (in shares)												76,217,359
Life Storage Merger issuance of common stock and Operating Partnership units	11,602,808								249,470			$ 762				11,352,576
Noncontrolling interest in consolidated joint ventures	5,209										5,209
Net income (loss)	198,856				2,253				8,284		(31)										188,350
Other comprehensive loss	(2,264)								(111)											(2,153)
Distributions to Operating Partnership units held by noncontrolling interests	(14,960)				(2,254)				(12,706)
Dividends paid on common stock	(265,286)																				(265,286)
Issuance of common stock in connection with share based compensation (in shares)												1,253
Issuance of common stock in connection with share based compensation	6,994											$ 0				6,994
Taxes paid upon net settlement of share based compensation (in shares)												(414)
Taxes paid upon net settlement of share based compensation	(63)															(63)
Restricted stock grants cancelled (in shares)												(3,128)
Ending balance at Sep. 30, 2023	15,566,701				222,939				798,384		8,257	$ 2,113				14,742,973				44,912	(252,877)
Ending balance (in shares) at Sep. 30, 2023												211,276,086
Beginning balance at Dec. 31, 2023	$ 15,413,949				222,360				791,754		8,914	$ 2,113				14,750,388				17,435	(379,015)
Beginning balance (in shares) at Dec. 31, 2023	211,278,803											211,278,803
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement, net (in shares)												178,944
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement	$ 14,419											$ 2				14,417
Issuance of common stock, net of offering costs (in shares)												2,310
Issuance of common stock, net of offering costs	365															365
Offering costs associated with shelf registration	(522)															(522)
Redemption of noncontrolling interests		0				$ (31,054)				(27,321)			$ 5				58,370
Redemption of noncontrolling interests (in shares)													521,685
Noncontrolling interest in consolidated joint ventures	1,687										1,687
Net income (loss)	622,431				6,073				24,137		27										592,194
Other comprehensive loss	(14,691)								(596)											(14,095)
Distributions to Operating Partnership units held by noncontrolling interests	(47,911)				(6,073)				(41,838)
Dividends paid on common stock	(1,031,044)																				(1,031,044)
Ending balance at Sep. 30, 2024	$ 14,958,683				191,306				746,136		10,628	$ 2,120				14,823,018				3,340	(817,865)
Ending balance (in shares) at Sep. 30, 2024	211,981,742											211,981,742
Beginning balance at Jun. 30, 2024	$ 15,130,840				191,306				757,102		9,800	$ 2,120				14,810,938				27,241	(667,667)
Beginning balance (in shares) at Jun. 30, 2024												211,927,348
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement, net (in shares)												10,515
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement	8,224											$ 0				8,224
Offering costs associated with shelf registration	(28)															(28)
Redemption of noncontrolling interests		$ 0								$ (3,884)			$ 0				$ 3,884
Redemption of noncontrolling interests (in shares)													43,879
Noncontrolling interest in consolidated joint ventures	825										825
Net income (loss)	202,945				1,932				7,800		3										193,210
Other comprehensive loss	(24,887)								(986)											(23,901)
Distributions to Operating Partnership units held by noncontrolling interests	(15,828)				(1,932)				(13,896)
Dividends paid on common stock	(343,408)																				(343,408)
Ending balance at Sep. 30, 2024	$ 14,958,683				$ 191,306				$ 746,136		$ 10,628	$ 2,120				$ 14,823,018				$ 3,340	$ (817,865)
Ending balance (in shares) at Sep. 30, 2024	211,981,742											211,981,742

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Condensed Consolidated Statements of Noncontrolling Interests and Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends paid per common share (in dollars per share)	$ 1.62	$ 1.62	$ 4.86	$ 4.86	$ 4.86

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ 622,431	$ 623,046
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	586,821	309,914
Amortization of deferred financing costs	13,419	9,716
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	32,563	8,228
Compensation expense related to share-based awards	14,417	19,433
Accrual of interest income added to principal of debt securities and notes receivable	(23,455)	(30,127)
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	(13,730)	0
Impairment of Life Storage trade name	51,763	0
Loss on real estate assets held for sale	63,620	0
Distributions from unconsolidated real estate ventures	21,839	11,484
Changes in operating assets and liabilities:
Other assets	45,737	(31,675)
Accounts payable and accrued expenses	45,145	134,310
Other liabilities	18,581	(16,370)
Net cash provided by operating activities	1,479,151	1,037,959
Cash flows from investing activities:
Acquisition of real estate assets and improvements	(361,126)	(197,333)
Life Storage Merger, net of cash acquired	0	(1,182,411)
Development and redevelopment of real estate assets	(100,507)	(66,533)
Proceeds from sale of real estate assets and investments in real estate ventures	4,415	2,132
Investment in unconsolidated real estate entities	(7,175)	(179,258)
Return of investment in unconsolidated real estate ventures	12,999	0
Issuance and purchase of notes receivable	(739,702)	(210,712)
Principal payments received from notes receivable	153,971	73,514
Proceeds from sale of notes receivable	175,335	134,064
Purchase of equipment and fixtures	(15,713)	(9,515)
Net cash used in investing activities	(877,503)	(1,636,052)
Cash flows from financing activities:
Proceeds from unsecured term loans and senior notes and revolving lines of credit	5,542,362	5,194,665
Principal payments on unsecured term loans and senior notes and revolving lines of credit	(6,062,896)	(4,617,755)
Proceeds from issuance of public bonds, net	1,000,000	950,000
Deferred financing costs	(12,633)	(51,359)
Proceeds from share issuances	365	0
Offering costs associated with shelf registration	(522)	0
Contributions from noncontrolling interests	15	0
Dividends paid on common stock	(1,031,044)	(704,069)
Distributions to noncontrolling interests	(48,053)	(43,003)
Net cash (used in) provided by financing activities	(612,406)	723,479
Net (decrease) increase in cash, cash equivalents, and restricted cash	(10,758)	125,386
Cash, cash equivalents, and restricted cash, beginning of the period	105,083	97,735
Cash, cash equivalents, and restricted cash, end of the period	94,325	223,121
Supplemental schedule of cash flow information
Interest paid	381,434	207,569
Income taxes paid	30,635	20,222
Redemption of Operating Partnership units held by noncontrolling interests for common stock
Noncontrolling interests in Operating Partnership	58,375	116,336
Common stock and paid-in capital	(58,375)	(11,336)
Noncontrolling interests in Operating Partnership Note Receivable Payoff	0	(100,000)
OP Unit Redemption - Cash Proceeds	0	(5,000)
Accrued Construction Costs And Capital Expenditures [Abstract]
Acquisition of real estate assets	9,094	6,835
Accounts payable and accrued expenses	(9,094)	(6,835)
Series A Preferred Stock
Cash flows from financing activities:
Redemption of Preferred A Units for cash	$ 0	$ (5,000)

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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Statement of Cash Flows [Abstract]
Cash and cash equivalents	$ 88,931	$ 99,062	$ 216,121	$ 92,868
Restricted cash	5,394	6,021	7,000	4,867
Cash, cash equivalents, and restricted cash	$ 94,325	$ 105,083	$ 223,121	$ 97,735

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Organization

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

ORGANIZATION

Extra Space Storage Inc. (the “Company”) is a fully integrated, self-administered and self-managed REIT, formed as a Maryland corporation on April 30, 2004, to own, operate, manage, acquire, develop and redevelop professionally managed self-storage properties (“stores”) located throughout the United States. The Company was formed to continue the business of Extra Space Storage LLC and its subsidiaries, which had engaged in the self-storage business since 1977. The Company’s interest in its stores is held through its operating partnership, Extra Space Storage LP (the “Operating Partnership”), which was formed on May 5, 2004. The Company’s primary assets are general partner and limited partner interests in the Operating Partnership, which meets the definition of a variable interest entity and is consolidated. This structure is commonly referred to as an umbrella partnership REIT, or UPREIT.

The Company invests in stores by acquiring wholly-owned stores or by acquiring an equity interest in real estate entities. At September 30, 2024, the Company had direct and indirect equity interests in 2,401 stores. In addition, the Company managed 1,461 stores for third parties, bringing the total number of stores which it owns and/or manages to 3,862. These stores are located in 42 states and Washington, D.C. The Company offers tenant reinsurance at its owned and managed stores that insures the value of goods in the storage units and also offers bridge loan financing to certain of its third-party self-storage owners.

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Basis of Presentation

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Basis of Presentation

BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements of the Company are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they may not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (including normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2024 are not necessarily indicative of results that may be expected for the year ending December 31, 2024. The condensed consolidated balance sheet as of December 31, 2023 has been derived from the Company’s audited financial statements as of that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the Securities and Exchange Commission.

Recently Issued Accounting Standards

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07 – Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amended guidance requires the disclosure of incremental segment information, including significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and a reconciliation of segment profit or loss to net income. The title and position of the CODM must also be disclosed, along with how the CODM uses the reported measures to assess segment performance and to allocate resources. Pursuant to this ASU, the footnotes to the Company's consolidated financial statements may include incremental disclosures related to its two reportable segments: (1) self-storage operations and (2) tenant reinsurance. The compliance with this ASU will be required beginning with the Company's annual report on Form 10-K for the year ending December 31, 2024, followed by interim disclosures in quarterly reports on Form 10-Q thereafter, with early adoption permitted. The Company expects to adopt this ASU for its annual report on Form 10-K for the year ending December 31, 2024.

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Fair Value Disclosures

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Disclosures

FAIR VALUE DISCLOSURES

Derivative Financial Instruments

Currently, the Company uses interest rate swaps to manage its interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the

market standard methodology of netting the discounted future fixed cash payments and the discounted expected variable cash receipts. The variable cash receipts are based on an expectation of future interest rates (forward curves) derived from observable market interest rate forward curves.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. In conjunction with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of September 30, 2024, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments were not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety were classified in Level 2 of the fair value hierarchy.

The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2024, aggregated by the level in the fair value hierarchy within which those measurements fall. 

	Fair Value Measurements at Reporting Date Using
Description	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets - Cash flow hedge swap agreements	$	—	$	11,716	$	—
Other liabilities - Cash flow hedge swap agreements	$	—	$	6,093	$	—

The Company did not have any significant assets or liabilities that are re-measured on a recurring basis using significant unobservable inputs as of September 30, 2024 or December 31, 2023.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Long-lived assets held for use are evaluated for impairment when events or circumstances indicate there may be impairment. The Company reviews each store at least annually to determine if any such events or circumstances have occurred or exist. The Company focuses on stores where occupancy and/or rental income have decreased by a significant amount. For these stores, the Company determines whether the decrease is temporary or permanent, and whether the store will likely recover the lost occupancy and/or revenue in the short term. In addition, the Company reviews stores in the lease-up stage and compares actual operating results to original projections.

When the Company determines that an event that may indicate impairment has occurred, the Company compares the carrying value of the related long-lived assets to the undiscounted future net operating cash flows attributable to the assets. An impairment loss is recorded if the net carrying value of the assets exceeds the undiscounted future net operating cash flows attributable to the assets. The impairment loss recognized equals the excess of net carrying value over the related fair value of the assets.

When real estate assets are identified by management as held for sale, the Company discontinues depreciating the assets and estimates the fair value of the assets, net of selling costs. The Company compares the carrying value of the related long-lived assets to the discounted future net operating cash flows attributable to the assets (categorized within Level 3 of the fair value hierarchy). If the estimated fair value, net of selling costs, of the assets that have been identified as held for sale is less than the net carrying value of the assets, the Company would recognize a loss on the assets held for sale. The operations of assets held for sale or sold during the period are presented as part of normal operations. As of September 30, 2024, the Company had 17 stores classified as held for sale which are included in real estate assets, net. Of the 17 stores, nine had an

estimated fair value, net of selling costs, of $70,952. During the nine months ended September 30, 2024, the Company recorded a loss of $63,620 as the fair value of these nine stores was less than the net carrying value.

The Company assesses annually whether there are any indicators that the value of the Company’s investments in unconsolidated real estate entities may be impaired and when events or circumstances indicate that there may be impairment. An investment is impaired if management’s estimate of the fair value of the investment is less than its carrying value. To the extent impairment has occurred, and is considered to be other than temporary, the loss is measured as the excess of the carrying amount of the investment over the fair value of the investment.

The Company evaluates goodwill for impairment at least annually and whenever events, circumstances, and other related factors indicate that the fair value of the related reporting unit may be less than the carrying value. If the fair value of the reporting unit is determined to exceed the aggregate carrying amount, no impairment charge is recorded. Otherwise, an impairment charge is recorded for the amount in which the fair value of the reporting unit exceeds the carrying value. No impairments of goodwill were recorded for any period presented herein.

Fair Value of Financial Instruments

The carrying values of cash and cash equivalents, restricted cash, receivables, other financial instruments included in other assets, net, accounts payable and accrued expenses, variable-rate notes payable, investments in debt securities and notes receivable, revolving lines of credit and other liabilities reflected in the condensed consolidated balance sheets at September 30, 2024 and December 31, 2023 approximate fair value. Restricted cash is comprised of funds deposited with financial institutions located throughout the United States primarily relating to operating cash reserve for the Company's captive insurance subsidiary and earnest money deposits on potential acquisitions.

The fair values of the Company’s fixed-rate notes payable were estimated using the discounted estimated future cash payments to be made on such debt (categorized within Level 3 of the fair value hierarchy); the discount rates used approximated current market rates for loans, or groups of loans, with similar maturities and credit quality.

The fair values of the Company’s fixed-rate liabilities were as follows for the periods indicated:

	September 30, 2024				December 31, 2023
	Fair Value		Carrying Value		Fair Value		Carrying Value
Fixed rate debt	$	8,761,624	$	9,014,590	$	7,482,054	$	8,048,605

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Acquisitions and Dispositions

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

Acquisitions and Dispositions

ACQUISITIONS AND DISPOSITIONS

The Life Storage Merger

On July 20, 2023, the Company closed its merger with Life Storage (the “Life Storage Merger”), which included 757 wholly-owned stores and one consolidated joint venture store. Under the terms of the Life Storage Merger, Life Storage stockholders and holders of units of the Life Storage operating partnership received 0.895 of a share of common stock (or OP Unit, as applicable) of the Company for each issued and outstanding share (or operating partnership unit) of Life Storage they owned for total equity consideration of $11,602,808, based on the Company's closing share price on July 19, 2023. At closing, the Company retired $1,160,000 in balances on Life Storage's line of credit which included $375,000 that Life Storage used to pay off its private placement notes in connection with the closing of the Life Storage Merger. The Company also paid off $32,000 in secured loans. On July 25, 2023, the Company completed obligor exchange offers and consent solicitations (together the “Exchange Offers”) related to Life Storage's various senior notes. Upon the closing of the Exchange Offers, a total of $2,351,100 of Life Storage's senior notes were exchanged for senior notes of the same tenor of Extra Space Storage L.P. The remaining Life Storage senior note balances which were not exchanged total $48,900 and no longer have any financial reporting requirements or covenants.

Consideration and Purchase Price Allocation

The Life Storage Merger was accounted for as an asset acquisition in accordance with ASC Topic 805 which requires that the cost of an acquisition be allocated on a relative fair value basis to the assets acquired and the liabilities assumed. The following table summarizes the fair value of total consideration transferred in the Life Storage Merger:

Consideration Type	July 20, 2023
Common stock	$	11,353,338
OP units	249,470
Cash for payoff of Life Storage credit facility and debt	1,192,000
Transaction Costs	55,318
Total consideration	$	12,850,127

The following table summarizes the estimated fair values assigned to the assets acquired and liabilities assumed:

	July 20, 2023
Real estate assets	$	14,587,735
Equity investment in joint venture partnerships	325,250
Cash and other assets	107,423
Intangible assets - other	82,000
Trade name	50,000
Unsecured senior notes	(2,106,866)
Accounts payable, accrued expenses and other liabilities	(191,077)
Noncontrolling interests	(4,338)
Fair value of net assets acquired	$	12,850,127

Fair Value Measurement

The estimated fair values of assets acquired and liabilities assumed were primarily based on information that was available as of the closing date of the Life Storage Merger. The methodology used to estimate the fair values to apply purchase accounting and the ongoing financial statement impact, if any, are summarized below.

•Real estate assets – Real estate assets acquired were recorded at fair value using standard valuation methodologies, including the cost and market approaches. The remaining useful lives for real estate assets, excluding land, were reset to 39 years. Tenant relationships for storage leases were recorded at fair value based on estimated costs the Company avoided to replace them. Tenant relationships are amortized to expense over 18 months, which is based on the Company’s historical experience with turnover in its stores.

•Equity investment in joint venture partnerships – Equity investment in joint venture partnerships were recorded at fair value based on a direct capitalization of net operating income.

•Intangible assets - other – Customer relationships relating to tenant reinsurance contracts were recorded at fair value based on the income approach which estimates the potential revenue loss the Company avoided to replace them. These assets are amortized to expense over 36 months, which is based on the Company’s historical experience with average length of stay for tenants.

•Trade name – Trade names were recorded at fair value based on royalty payments avoided had the trade name been owned by a third party. This is determined using market royalty rates and a discounted cash flow analysis under the relief-from-royalty method. This method incorporates various assumptions, including projected revenue growth rates, the terminal growth rate, the royalty rate to be applied, and the discount rate utilized. The trade name is an indefinite lived asset and as such is not amortized. During the three months ended September 30, 2024, the Company decided to operate

all stores under a single brand. As a result of that decision, the Company deemed the Life Storage trade name intangible asset to be impaired and recognized a loss for the full value of the asset.

•Unsecured senior notes – Unsecured senior notes were recorded at fair value using readily available market data. The below-market value of debt is recorded as a debt discount and reported as a reduction of the unsecured senior notes, net balance on the condensed consolidated balance sheets. The discount is amortized using the effective interest method as an increase to interest expense over the remaining terms of the unsecured senior notes.

•Other assets and liabilities – The carrying values of cash, accounts receivable, prepaids and other assets, accounts payable, accrued expenses and other liabilities represented the fair values.

Store Acquisitions

The following table shows the Company’s acquisitions of stores for the three and nine months ended September 30, 2024 and 2023. The table excludes purchases of raw land and improvements made to existing assets. All store acquisitions are considered asset acquisitions under ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.”

														Total
Period	Number of Stores	Cash Paid		Loan Assumed		Finance Lease Liability		Investments in Real Estate Ventures		Net Liabilities/ (Assets) Assumed		Value of Equity Issued		Real estate assets
Q3 2024	11	$	159,196	$	—	$	—	$	—	$	1,431	$	—	$	160,627
Q2 2024	3	27,644		—		—		—		97		$	—	27,741
Q1 2024	6	35,084		—		—		—		171		$	—	35,255
Total 2024	20	$	221,924	$	—	$	—	$	—	$	1,699	$	—	$	223,623
Q3 2023	3	$	18,578	$	—	$	—	$	—	$	86	$	—	$	18,664
Q2 2023	3	32,888		—		—		—		26		—		32,914
Q1 2023	1	13,111		—		—		—		6		—		13,117
Total 2023	7	$	64,577	$	—	$	—	$	—	$	118	$	—	$	64,695

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Real Estate Assets

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

Real Estate Assets

REAL ESTATE ASSETS

The components of real estate assets are summarized as follows:

	September 30, 2024		December 31, 2023
Land	$	4,923,702	$	4,904,705
Buildings, improvements and other intangibles	22,032,745		21,664,224
Right of use asset - finance lease	143,286		143,842
Intangible assets - tenant relationships	322,771		321,019
Intangible lease rights	27,743		27,743
	27,450,247		27,061,533
Less: accumulated depreciation and amortization	(3,168,088)		(2,624,405)
Net operating real estate assets	24,282,159		24,437,128
Real estate under development/redevelopment	103,333		118,745
Real estate assets, net	$	24,385,492	$	24,555,873
Real estate assets held for sale included in real estate assets, net	$	131,527	$	—

In September 2024, the Company amended existing triple-net lease agreements for land and buildings related to 27 stores that had initially been entered into in June and August 2019. The Company also entered into new triple-net lease agreements for land and buildings related to 12 additional stores. Both the initial 27 stores and the additional 12 stores added to the triple net lease structure are categorized as operating leases and have been presented in real estate assets - operating lease right-of-use assets and operating lease liabilities on the Company's condensed consolidated balance sheets.

As of September 30, 2024, the Company had 17 stores classified as held for sale which are included in real estate assets, net. Of the 17 stores, nine had an estimated fair value, net of selling costs, less than the carrying value of the assets. During the three and nine months ended September 30, 2024, the Company recorded estimated losses of $8,961 and $63,620, respectively, in loss on real estate assets held for sale on the Company's condensed consolidated statements of operations. Assets held for sale are included in the self-storage operations segment of the Company’s segment information.

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Other Assets

9 Months Ended

Sep. 30, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

OTHER ASSETS

The components of other assets are summarized as follows:

	September 30, 2024		December 31, 2023
Goodwill	$	170,811	$	170,811
Receivables, net	112,748		134,716
Prepaid expenses and deposits	97,521		85,153
Other intangible assets, net	39,498		66,332
Trade name	—		50,000
Fair value of interest rate swaps	11,716		26,183
Equipment and fixtures, net	50,065		48,697
Deferred line of credit financing costs, net	8,108		9,787
Restricted cash	5,394		6,021
	$	495,861	$	597,700

During the three months ended September 30, 2024, the Company decided to operate all stores under a single brand. As a result of that decision, the Company deemed the Life Storage trade name intangible asset to be impaired and recognized a loss for the full value of the asset. A loss of $51,763 for the write-off of the asset and related costs has been recorded in impairment

of Life Storage trade name on the Company's condensed consolidated statements of operations for the three months ended September 30, 2024. The trade name was originally recorded at fair value based on royalty payments avoided had the trade name been owned by a third party. This was determined using market royalty rates and a discounted cash flow analysis under the relief-from-royalty method. Intangible assets are included in the self-storage operations segment of the Company’s segment information.

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Common Share

EARNINGS PER COMMON SHARE

Basic earnings per common share is computed using the two-class method by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding during the period. All outstanding unvested restricted stock awards contain rights to non-forfeitable dividends and participate in undistributed earnings with common stockholders; accordingly, they are considered participating securities that are included in the two-class method. Diluted earnings per common share measures the performance of the Company over the reporting period while giving effect to all potential common shares that were dilutive and outstanding during the period. The denominator includes the weighted average number of basic shares and the number of additional common shares that would have been outstanding if the potential common shares that were dilutive had been issued, and is calculated using the two-class, treasury stock or if-converted method, whichever is most dilutive. Potential common shares are securities (such as options, Series A Participating Redeemable Preferred Units (“Series A Units”), Series B Redeemable Preferred Units (“Series B Units”), Series D Redeemable Preferred Units (“Series D Units” and, together with the Series A Units and Series B Units, the “Preferred OP Units”) and common Operating Partnership units (“OP Units”)) that do not have a current right to participate in earnings of the Company but could do so in the future by virtue of their option, redemption or conversion right.

In computing the dilutive effect of convertible securities, net income is adjusted to add back any changes in earnings in the period associated with the convertible security. The numerator also is adjusted for the effects of any other non-discretionary changes in income or loss that would result from the assumed conversion of those potential common shares. In computing diluted earnings per common share, only potential common shares that are dilutive (i.e. those that reduce earnings per common share) are included.

For the purposes of computing the diluted impact of the potential exchange of the Preferred Operating Partnership units for common shares upon redemption, where the Company has the option to redeem in cash or shares and where the Company has stated the intent and ability to settle the redemption in shares, the Company divided the total value of the Preferred Operating Partnership units by the average share price for the period presented. The average share price for the three months ended September 30, 2024 and 2023 was $168.78 and $134.24, respectively.

The following table presents the number of Common and Preferred Operating Partnership units as if converted into potential common shares that were excluded from the computation of earnings per share as their effect would have been anti-dilutive.

	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2024	2023	2024	2023
	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)
Common OP Units	—	8,541,775	—	7,661,885
Series B Units	198,887	250,061	218,529	228,029
Series D Units	934,585	1,409,198	1,111,927	1,287,256
	1,133,472	10,201,034	1,330,456	9,177,170

The computation of earnings per common share is as follows for the periods presented:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net income attributable to common stockholders	$	193,210	$	188,350	$	592,194	$	587,064
Earnings and dividends allocated to participating securities	(392)		(304)		(1,141)		(931)
Earnings for basic computations	192,818		188,046		591,053		586,133
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units	7,800		—		24,136		—
Net income for diluted computations	$	200,618	$	188,046	$	615,189	$	586,133
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	211,698,436		195,324,444		211,522,578		155,112,071
OP Units	8,597,656		—		8,651,915		—
Shares related to dilutive stock options	2,778		3,576		3,199		4,078
Average number of common shares outstanding - diluted	220,298,870		195,328,020		220,177,692		155,116,149
Earnings per common share
Basic	$	0.91	$	0.96	$	2.79	$	3.78
Diluted	$	0.91	$	0.96	$	2.79	$	3.78

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Investments in Unconsolidated Real Estate Entities

9 Months Ended

Sep. 30, 2024

Equity Method Investments and Joint Ventures [Abstract]

Investments in Unconsolidated Real Estate Entities

INVESTMENTS IN UNCONSOLIDATED REAL ESTATE ENTITIES

Investments in unconsolidated real estate entities and cash distributions in unconsolidated real estate ventures represent the Company's interest in preferred stock of SmartStop Self Storage REIT, Inc. (“SmartStop”) and Strategic Storage Trust VI, Inc. (“Strategic Storage”), an affiliate of SmartStop, and the Company's noncontrolling interest in real estate joint ventures. The Company accounts for its investments in SmartStop and Strategic Storage preferred stock, which do not have a readily determinable fair value, at the transaction price less impairment, if any. The Company accounts for its investments in joint ventures using the equity method of accounting. The Company initially records these investments at cost and subsequently adjusts for cash contributions, distributions and net equity in income or loss, which is allocated in accordance with the provisions of the applicable partnership or joint venture agreement.

In these joint ventures, the Company and the joint venture partner generally receive a preferred return on their invested capital. To the extent that cash or profits in excess of these preferred returns are generated through operations or capital transactions, the Company would receive a higher percentage of the excess cash or profits, as applicable, than its equity interest.

The Company separately reports investments with net equity less than zero in cash distributions in unconsolidated real estate ventures in the condensed consolidated balance sheets. The net equity of certain joint ventures is less than zero because distributions have exceeded the Company's investment in and share of income from these joint ventures. This is generally the result of financing distributions, capital events or operating distributions that are usually greater than net income, as net income includes non-cash charges for depreciation and amortization while distributions do not.

Net investments in unconsolidated real estate entities and cash distributions in unconsolidated real estate ventures consist of the following:

	Number of Stores	Equity Ownership %	Excess Profit % (1)	September 30,		December 31,
				2024		2023
PRISA Self Storage LLC	85	4%	4%	$	9,110	$	9,435
HF1 Sovran HHF Storage Holdings LLC	37	20%	20%	102,901		105,339
Storage Portfolio II JV LLC	36	10%	30%	(9,219)		(8,314)
Storage Portfolio IV JV LLC	32	10%	30%	47,491		48,184
Storage Portfolio I LLC	24	34%	49%	(43,430)		(42,487)
PR II EXR JV LLC	23	25%	25%	106,456		108,160
HF2 Sovran HHF Storage Holdings II LLC	22	15%	15%	41,039		41,613
HF5 Life Storage-HIERS Storage LLC	17	20%	20%	25,450		26,051
HF6 191 V Life Storage Holdings LLC	17	20%	20%	11,315		12,702
ESS-CA TIVS JV LP	16	55%	55%-65%	27,794		29,128
VRS Self Storage, LLC	16	45%	54%	(17,312)		(16,386)
HF10 Life Storage HHF Wasatch Holdings LLC	16	20%	20%	19,581		20,019
Other unconsolidated real estate ventures (2) (3)	119	10%-50%	10%-50%	314,864		317,104
SmartStop Self Storage REIT, Inc. Preferred Stock (4)	n/a	n/a	n/a	200,000		200,000
Strategic Storage Trust VI, Inc. Preferred Stock (5)	n/a	n/a	n/a	150,000		150,000
Net Investments in and Cash distributions in unconsolidated real estate entities	460			$	986,040	$	1,000,548

(1)    Includes pro-rata equity ownership share and promoted interest.

(2)    In August 2024, the ESS Bristol Investments LLC unconsolidated joint venture sold five of its eight stores to another of the Company's unconsolidated joint ventures, and the Company recognized a gain of $10,324 for its pro rata share of the transaction. The Company then acquired its partner's membership interest in the remaining three stores held by ESS Bristol Investments LLC, which is now presented under real estate assets, net on the Company's condensed consolidated balance sheets.

(3)    In September 2024, the Company sold its membership interest in the Alan Jathoo JV LLC unconsolidated joint venture, which held nine stores, to its partner in such joint venture and recognized a gain of $3,406 on the transaction. This gain and the gain from the ESS Bristol Investments LLC transaction are presented in equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest on the Company's condensed consolidated statements of operations for the three months ended September 30, 2024.

(4)    In October 2019, the Company invested $200,000 in shares of convertible preferred stock of SmartStop with a dividend rate of 6.25% per annum, subject to increase after five years. The preferred shares are generally not redeemable for five years, except in the case of a change of control or initial listing of SmartStop. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities line on the Company's condensed consolidated statements of operations.

(5)    In May 2023, the Company invested $150,000 in shares of convertible preferred stock of Strategic Storage with a dividend rate of 8.35% per annum, subject to increase after five years. The preferred shares are generally not redeemable for three years, except in the case of a change of control or initial listing of Strategic Storage. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities on the Company's condensed consolidated statements of operations.

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Investments in Debt Securities and Notes Receivable

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Investments in Debt Securities and Notes Receivable

INVESTMENTS IN DEBT SECURITIES AND NOTES RECEIVABLE

Investments in debt securities and notes receivable consists of the Company's investment in mandatorily redeemable preferred stock of Jernigan Capital, Inc. (“JCAP”) in connection with JCAP's acquisition by affiliates of NexPoint Advisors, L.P. (“NexPoint”) and receivables due to the Company under its bridge loan program. Information about these balances is as

follows:

	September 30, 2024		December 31, 2023
Debt securities - Preferred Stock	$	300,000	$	300,000
Notes Receivable - Bridge Loans	1,032,244		594,727
Dividends and Interest Receivable	6,375		10,042
	$	1,338,619	$	904,769

In November 2020, the Company invested $300,000 in the preferred stock of JCAP in connection with the acquisition of JCAP by NexPoint. This investment consisted of 200,000 Series A Preferred Shares valued at a total of $200,000, and 100,000 Series B Preferred Shares valued at a total of $100,000. In December 2022, the Company completed a modification with NexPoint Storage Partners (as successor in interest to JCAP) that exchanged the Series A and Series B Preferred Shares for 300,000 Series D Preferred Shares, valued at a total of $300,000. The Series D Preferred Shares are mandatorily redeemable after six years from the modification in December 2022, with two one-year extension options. NexPoint may redeem the Series D Preferred Shares at any time, subject to certain prepayment penalties. The Company accounts for the Series D Preferred Shares as a held to maturity debt security at amortized cost. The Series D Preferred Shares have an initial dividend rate of 8.5%. If the investment is not retired after six years, the preferred dividends increase annually.

The Company offers bridge loan financing to certain of its third-party self-storage owners. These notes receivable consist of mortgage loans receivable, which are collateralized by self-storage properties that the Company manages, and mezzanine loans receivable, which are secured by equity interest pledges. As of September 30, 2024, 71% of the notes held are mortgage receivables. The Company intends to sell a portion of the mortgage receivables. These notes receivable typically have a term of three years with two one-year extensions and have variable interest rates. During the nine months ended September 30, 2024, the Company sold a total principal amount of $175,335 of its mortgage bridge loans receivable to third parties for a total of $175,335 in cash, closed on $636,215 in initial loan draws and recorded $39,709 of draws for interest payments.

The bridge loans typically have a loan to value ratio between 70% and 80%. During the three months ended September 30, 2024, one of the notes receivable entered nonaccrual status. None of the other notes receivable are in past-due or nonaccrual status. The allowance for potential credit losses is immaterial.

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Debt

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Debt

DEBT

The components of term debt are summarized as follows:

Term Debt	September 30, 2024		December 31, 2023
Secured notes payable (1)	$	1,018,209	$	1,279,105
Unsecured term loans	2,200,000		2,660,000
Unsecured senior notes	7,725,000		6,725,000
Total	10,943,209		10,664,105
Less: Discount on unsecured senior notes (2)	(241,786)		(274,350)
Less: Unamortized debt issuance costs	(57,593)		(55,007)
Total	$	10,643,830	$	10,334,748
(1) The loans are collateralized by mortgages on real estate assets and the assignment of rents.
(2) Unsecured senior notes from the Life Storage Merger were recorded at fair value, resulting in a discount to be amortized over the term of the debt.

The following table summarizes the scheduled maturities of term debt, excluding available extensions, at September 30, 2024:

Year	Amount
2024	$	—
2025	782,722
2026	1,409,525
2027	1,312,689
2028	1,328,100
2029	1,516,807
2030	1,343,366
2031	1,650,000
2032	600,000
Thereafter	1,000,000
	$	10,943,209

All of the Company’s lines of credit are guaranteed by the Company. The following table presents information on the Company’s lines of credit, the proceeds of which are used to repay debt and for general corporate purposes, for the periods indicated:

	As of September 30, 2024
Revolving Lines of Credit	Amount Drawn		Capacity		Interest Rate	Maturity	Basis Rate (1)
Credit Line 1 (2)	$	55,000	$	140,000	6.31%	7/1/2026	SOFR plus 1.35%
Credit Line 2 (3)(4)	829,000		2,000,000		5.84%	6/22/2027	SOFR plus 0.875%
	$	884,000	$	2,140,000
(1) Daily Simple Secured Overnight Financing Rate (“SOFR”)
(2) Secured by mortgages on certain real estate assets. On January 13, 2023, the maturity date was extended to July 1, 2026 with one extension of one year available.
(3) Unsecured. On June 22, 2023, the maturity date was extended to June 22, 2027 with two six-month extensions available. On August 11, 2023, the capacity was increased by $60.0 million.
(4) Basis Rate as of September 30, 2024. Rate is subject to change based on the Company's investment grade rating.

On June 22, 2023, the Company entered into the Third Amended and Restated Credit Agreement (the “Credit Agreement”). Pursuant to the terms of the Credit Agreement, the Company may request an extension of the term of the revolving credit facility for up to two additional periods of six months each, after satisfying certain conditions.

As of September 30, 2024, amounts outstanding under the revolving credit facility bore interest at floating rates, at the Company’s option, equal to either (i) Adjusted Term or Daily Simple SOFR plus the applicable margin or (ii) the applicable base rate which is the applicable margin plus the highest of (a) 0.0%, (b) the federal funds rate plus 0.50%, (c) U.S. Bank’s prime rate or (d) the SOFR rate plus 1.00%. Per the Credit Agreement, the applicable SOFR rate margin and applicable base rate margin are based on the Company’s achieved debt rating, with the SOFR rate margin ranging from 0.7% to 2.2% per annum and the applicable base rate margin ranging from 0.00% to 1.20% per annum.

The Credit Agreement is guaranteed by the Company and is not secured by any assets of the Company. The Company's unsecured debt is subject to certain financial covenants. As of September 30, 2024, the Company was in compliance with all of its financial covenants.

As of September 30, 2024, the Company’s percentage of fixed-rate debt to total debt was 78.3%. The weighted average interest rates of the Company’s fixed and variable-rate debt were 4.0% and 6.0%, respectively. The combined weighted average interest rate was 4.5%.

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Derivatives

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

DERIVATIVES

The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity and credit risk, primarily by managing the amount, sources and duration of its debt funding and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing and duration of the Company’s known or expected cash payments principally related to the Company’s borrowings.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish these objectives, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (“OCI”) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. A portion of these changes is excluded from accumulated other comprehensive income as it is allocated to noncontrolling interests. During the three and nine months ended September 30, 2024 and 2023, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. In the coming 12 months, the Company estimates that $7,681 will be reclassified as an increase to interest income.

The Company held 14 active derivative financial instruments, which had a total current notional amount of $1,382,568 as of September 30, 2024 and two forward-starting derivative financial instruments with effective dates of October 31, 2024 and July 14, 2025.

Fair Values of Derivative Instruments

The table below presents the fair values of the Company’s derivative financial instruments as well as their classification on the condensed consolidated balance sheets:

	Asset / Liability Derivatives
Derivatives designated as hedging instruments:	September 30, 2024		December 31, 2023
Other assets	$	11,716	$	26,183
Other liabilities	$	6,093	$	5,030

Effect of Derivative Instruments

The table below presents the effect of the Company’s derivative financial instruments on the condensed consolidated statements of operations for the periods presented. No tax effect has been presented as the derivative instruments are held by the Company:

	Gain (loss) recognized in OCI for the Three Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Three Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	(17,931)	$	9,146	Interest expense	$	6,965	$	11,415

	Gain (loss) recognized in OCI for the Nine Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Nine Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	7,363	$	27,212	Interest expense	$	22,042	$	31,398

Credit-Risk-Related Contingent Features

The Company has agreements with some of its derivative counterparties that contain provisions pursuant to which the Company could be declared in default of its derivative obligations if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender.

The Company also has an agreement with some of its derivative counterparties that incorporates the loan covenant provisions of the Company’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with the loan covenant provisions would result in the Company being in default on any derivative instrument obligations covered by the agreement.

As of September 30, 2024, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk related to these agreements, was $5,423. As of September 30, 2024, the Company had not posted any collateral related to these agreements. If the Company had breached any of these provisions as of September 30, 2024, it could have been required to cash settle its obligations under these agreements at their termination value of $5,423.

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Stockholders' Equity

9 Months Ended

Sep. 30, 2024

Stockholders' Equity Note [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

On April 15, 2024, the Company filed its $800,000 “at the market” equity program with the Securities and Exchange Commission using a shelf registration statement on Form S-3, and entered into an equity distribution agreement with nine sales agents. No shares have been sold under the current “at the market” equity program, and no shares were sold under the previous “at the market” equity program, which spanned from August 9, 2021 through April 14, 2024.

On November 13, 2023, the Company's board of directors authorized a share repurchase program allowing for the repurchase of shares with an aggregate value up to $500,000. During the year ended December 31, 2023 and the nine months ended September 30, 2024, no shares were repurchased. As of September 30, 2024, the Company had remaining authorization to repurchase shares with an aggregate value up to $500,000.

On July 20, 2023, the Company issued 76,217,359 shares of its common stock at $148.96 for a total value of $11,353,338 as part of the Life Storage Merger. See Acquisitions and Dispositions note above.

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Noncontrolling Interest Represented by Preferred Operating Partnership Units

9 Months Ended

Sep. 30, 2024

Noncontrolling Interest [Abstract]

Noncontrolling Interest Represented by Preferred Operating Partnership Units

NONCONTROLLING INTEREST REPRESENTED BY PREFERRED OPERATING PARTNERSHIP UNITS

Classification of Noncontrolling Interests

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the Operating Partnership’s preferred units and classifies the noncontrolling interest represented by such preferred units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling interest as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount and (2) the redemption value as of the end of the period in which the determination is made.

At September 30, 2024 and December 31, 2023, the noncontrolling interests represented by the Preferred OP Units qualified for classification as permanent equity on the Company's condensed consolidated balance sheets. The partnership agreement of the Operating Partnership (as amended, the “Partnership Agreement”) provides for the designation and issuance of the OP Units. The balances for each of the specific Preferred OP Units as presented in the Statement of Noncontrolling Interests and Equity as of the periods indicated are as follows:

	September 30, 2024		December 31, 2023
Series B Units	$	33,567	$	33,567
Series D Units	157,739		188,793
	$	191,306	$	222,360

Series A Participating Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series A Units. The Series A Units have priority over all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series A Units.

Series B Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series B Units. The Series B Units rank junior to the Series A Units, on parity with the Series C Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series B Units were issued in 2013 and 2014. The Series B Units have a liquidation value of $25.00 per unit for a fixed liquidation value of $33,567 which represents 1,342,727 Series B Units. Holders of the Series B Units receive distributions at an annual rate of 6.0%. These distributions are cumulative. The Series B Units became redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock.

Series C Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series C Units. The Series C Units ranked junior to the Series A Units, on parity with the Series B Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series C Units.

Series D Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series D Units. The Series D Units rank junior to the Series A Units, on parity with the Series B Units and Series C Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series D Units have a liquidation value of $25.00 per unit, for a fixed liquidation value of $157,739, which represents 6,309,567 Series D Units. Holders of the Series D Units receive distributions at an annual rate between 3.0% and 5.0%. These distributions are cumulative. The Series D Units become redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock. In addition, certain of the Series D Units are exchangeable for OP Units at the option of the holder until the tenth anniversary of the date of issuance, with the number of OP Units to be issued equal to $25.00 per Series D Unit, divided by the value of a share of common stock as of the exchange date.

During the nine months ended September 30, 2024, 1,242,168 Series D Units were redeemed for 213,661 shares of common stock.

NONCONTROLLING INTEREST IN OPERATING PARTNERSHIP AND OTHER NONCONTROLLING INTERESTS

Noncontrolling Interest in Operating Partnership

The Company’s interest in its stores is held through the Operating Partnership. Between its general partner and limited partner interests, the Company held a 95.6% ownership interest in the Operating Partnership as of September 30, 2024. The remaining ownership interests in the Operating Partnership (including Preferred OP Units) of 4.4% are held by certain former owners of assets acquired by the Operating Partnership. As of September 30, 2024 and December 31, 2023, the noncontrolling interests in the Operating Partnership are shown on the balance sheet net of a note receivable of $1,900 because a borrower under the note receivable is also a holder of OP Units. This note receivable originated in December 2014, bears interest at 5.0% per annum and matures on December 15, 2024.

The noncontrolling interest in the Operating Partnership represents OP Units that are not owned by the Company. OP Units are redeemable at the option of the holder, which redemption may be satisfied at the Company's option in cash, based upon the fair market value of an equivalent number of shares of the Company’s common stock (based on the ten-day average trading price) at the time of the redemption, or shares of the Company's common stock on a one-for-one basis, subject to anti-dilution adjustments provided in the Partnership Agreement. As of September 30, 2024, the ten-day average closing price of the Company's common stock was $180.16 and there were 8,577,570 OP Units outstanding. Assuming that all of the OP Unit holders exercised their right to redeem all of their OP Units on September 30, 2024 and the Company elected to pay the OP Unit holders cash, the Company would have paid $1,545,335 in cash consideration to redeem the units.

OP Unit activity is summarized as follows for the periods presented:

	For the Nine Months Ended September 30,
	2024		2023
OP Units redeemed for common stock	308,024		—
OP Units issued in conjunction with business combination and acquisitions	—		1,674,748
Value of OP Units issued in conjunction with business combination and acquisitions	$	—	$	249,470

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations, and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the OP Units and classifies the noncontrolling interest represented by the OP Units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling amount as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount, or (2) its redemption value as of the end of the period in which the determination is made.

Other Noncontrolling Interests

Other noncontrolling interests represent the ownership interest of partners in nine consolidated joint ventures as of September 30, 2024. There are a total of 13 stores in consolidated joint ventures, seven of which are operating and the other six of which are under development. The voting interests of the partners are 17.0% or less.

Based on the facts and circumstances of each of the Company’s joint ventures, the Company has determined that one of the joint ventures at September 30, 2024 was a variable interest entity (“VIE”) in accordance with ASC 810, “Consolidation.” The Company has consolidated that joint venture as it was determined that the Company has the power to direct the activities of the joint venture and is the primary beneficiary of the joint venture.

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Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests

9 Months Ended

Sep. 30, 2024

Noncontrolling Interest [Abstract]

Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests

NONCONTROLLING INTEREST REPRESENTED BY PREFERRED OPERATING PARTNERSHIP UNITS

Classification of Noncontrolling Interests

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the Operating Partnership’s preferred units and classifies the noncontrolling interest represented by such preferred units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling interest as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount and (2) the redemption value as of the end of the period in which the determination is made.

At September 30, 2024 and December 31, 2023, the noncontrolling interests represented by the Preferred OP Units qualified for classification as permanent equity on the Company's condensed consolidated balance sheets. The partnership agreement of the Operating Partnership (as amended, the “Partnership Agreement”) provides for the designation and issuance of the OP Units. The balances for each of the specific Preferred OP Units as presented in the Statement of Noncontrolling Interests and Equity as of the periods indicated are as follows:

	September 30, 2024		December 31, 2023
Series B Units	$	33,567	$	33,567
Series D Units	157,739		188,793
	$	191,306	$	222,360

Series A Participating Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series A Units. The Series A Units have priority over all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series A Units.

Series B Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series B Units. The Series B Units rank junior to the Series A Units, on parity with the Series C Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series B Units were issued in 2013 and 2014. The Series B Units have a liquidation value of $25.00 per unit for a fixed liquidation value of $33,567 which represents 1,342,727 Series B Units. Holders of the Series B Units receive distributions at an annual rate of 6.0%. These distributions are cumulative. The Series B Units became redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock.

Series C Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series C Units. The Series C Units ranked junior to the Series A Units, on parity with the Series B Units and Series D Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation. As of September 30, 2024 and December 31, 2023, there were no outstanding Series C Units.

Series D Redeemable Preferred Units

The Partnership Agreement provides for the designation and issuance of the Series D Units. The Series D Units rank junior to the Series A Units, on parity with the Series B Units and Series C Units, and senior to all other partnership interests of the Operating Partnership with respect to distributions and liquidation.

The Series D Units have a liquidation value of $25.00 per unit, for a fixed liquidation value of $157,739, which represents 6,309,567 Series D Units. Holders of the Series D Units receive distributions at an annual rate between 3.0% and 5.0%. These distributions are cumulative. The Series D Units become redeemable at the option of the holder on the first anniversary of the date of issuance, which redemption obligation may be satisfied at the Company’s option in cash or shares of its common stock. In addition, certain of the Series D Units are exchangeable for OP Units at the option of the holder until the tenth anniversary of the date of issuance, with the number of OP Units to be issued equal to $25.00 per Series D Unit, divided by the value of a share of common stock as of the exchange date.

During the nine months ended September 30, 2024, 1,242,168 Series D Units were redeemed for 213,661 shares of common stock.

NONCONTROLLING INTEREST IN OPERATING PARTNERSHIP AND OTHER NONCONTROLLING INTERESTS

Noncontrolling Interest in Operating Partnership

The Company’s interest in its stores is held through the Operating Partnership. Between its general partner and limited partner interests, the Company held a 95.6% ownership interest in the Operating Partnership as of September 30, 2024. The remaining ownership interests in the Operating Partnership (including Preferred OP Units) of 4.4% are held by certain former owners of assets acquired by the Operating Partnership. As of September 30, 2024 and December 31, 2023, the noncontrolling interests in the Operating Partnership are shown on the balance sheet net of a note receivable of $1,900 because a borrower under the note receivable is also a holder of OP Units. This note receivable originated in December 2014, bears interest at 5.0% per annum and matures on December 15, 2024.

The noncontrolling interest in the Operating Partnership represents OP Units that are not owned by the Company. OP Units are redeemable at the option of the holder, which redemption may be satisfied at the Company's option in cash, based upon the fair market value of an equivalent number of shares of the Company’s common stock (based on the ten-day average trading price) at the time of the redemption, or shares of the Company's common stock on a one-for-one basis, subject to anti-dilution adjustments provided in the Partnership Agreement. As of September 30, 2024, the ten-day average closing price of the Company's common stock was $180.16 and there were 8,577,570 OP Units outstanding. Assuming that all of the OP Unit holders exercised their right to redeem all of their OP Units on September 30, 2024 and the Company elected to pay the OP Unit holders cash, the Company would have paid $1,545,335 in cash consideration to redeem the units.

OP Unit activity is summarized as follows for the periods presented:

	For the Nine Months Ended September 30,
	2024		2023
OP Units redeemed for common stock	308,024		—
OP Units issued in conjunction with business combination and acquisitions	—		1,674,748
Value of OP Units issued in conjunction with business combination and acquisitions	$	—	$	249,470

GAAP requires a company to present ownership interests in subsidiaries held by parties other than the company in the consolidated financial statements within the equity section, but separate from the company’s equity. It also requires the amount of consolidated net income attributable to the parent and to the noncontrolling interest to be clearly identified and presented on the face of the consolidated statement of operations, and requires changes in ownership interest to be accounted for similarly as equity transactions. If noncontrolling interests are determined to be redeemable, they are to be carried at their redemption value as of the balance sheet date and reported as temporary equity.

The Company has evaluated the terms of the OP Units and classifies the noncontrolling interest represented by the OP Units as stockholders’ equity in the accompanying condensed consolidated balance sheets. The Company will periodically evaluate individual noncontrolling interests for the ability to continue to recognize the noncontrolling amount as permanent equity in the condensed consolidated balance sheets. Any noncontrolling interests that fail to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (1) the carrying amount, or (2) its redemption value as of the end of the period in which the determination is made.

Other Noncontrolling Interests

Other noncontrolling interests represent the ownership interest of partners in nine consolidated joint ventures as of September 30, 2024. There are a total of 13 stores in consolidated joint ventures, seven of which are operating and the other six of which are under development. The voting interests of the partners are 17.0% or less.

Based on the facts and circumstances of each of the Company’s joint ventures, the Company has determined that one of the joint ventures at September 30, 2024 was a variable interest entity (“VIE”) in accordance with ASC 810, “Consolidation.” The Company has consolidated that joint venture as it was determined that the Company has the power to direct the activities of the joint venture and is the primary beneficiary of the joint venture.

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Segment Information

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Segment Information

SEGMENT INFORMATION

The Company’s segment disclosures present the measure used by the chief operating decision makers (“CODMs”) for purposes of assessing each segment’s performance. The Company’s CODMs are comprised of several members of its executive management team who use net operating income (“NOI”) to assess the performance of the business for the Company’s reportable operating segments. The Company’s segments are comprised of two reportable segments: (1) self-storage operations and (2) tenant reinsurance. NOI for the Company's self-storage operations represents total property revenue less direct property operating expenses. NOI for the Company's tenant reinsurance segment represents tenant reinsurance revenues less tenant reinsurance expense.

The self-storage operations activities include rental operations of wholly-owned stores and self-storage units acquired in the Bargold transaction on June 1, 2022. The Company's consolidated revenues equal total segment revenues plus property management fees and other income. Tenant reinsurance activities include the reinsurance of risks relating to the loss of goods stored by tenants in the stores operated by the Company. Excluded from segment revenues and net operating income is property management fees and other income.

For all periods presented, substantially all of the Company's real estate assets, intangible assets, other assets, and accrued and other liabilities are associated with the self-storage operations segment. Financial information for the Company’s business segments is set forth below:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Revenues:
Self-Storage Operations	$	710,874	$	650,887	$	2,096,018	$	1,525,596
Tenant Reinsurance	84,048		69,128		249,100		165,265
Total segment revenues	$	794,922	$	720,015	$	2,345,118	$	1,690,861
Operating expenses:
Self-Storage Operations	$	209,035	$	185,194	$	610,455	$	416,997
Tenant Reinsurance	17,510		19,130		55,646		37,701
Total segment operating expenses	$	226,545	$	204,324	$	666,101	$	454,698
Net operating income:
Self-Storage Operations	$	501,839	$	465,693	$	1,485,563	$	1,108,599
Tenant Reinsurance	66,538		49,998		193,454		127,564
Total segment net operating income:	$	568,377	$	515,691	$	1,679,017	$	1,236,163
Other components of net income:
Management fees and other income	$	29,882	$	28,019	$	89,888	$	71,609
Life Storage Merger transition costs	—		(54,174)		—		(54,174)
General and administrative expense	(39,750)		(37,406)		(123,373)		(107,011)
Depreciation and amortization expense	(195,046)		(152,338)		(586,821)		(309,914)
Loss on real estate assets held for sale	(8,961)		—		(63,620)		—
Interest expense	(142,855)		(122,899)		(412,875)		(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)		(8,228)		(32,563)		(8,228)
Interest income	34,947		22,092		89,746		62,607
Equity in earnings and dividend income from unconsolidated real estate entities	16,246		15,043		48,508		38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets	13,730		—		13,730		—
Impairment of trade name	(51,763)		—		(51,763)		—
Income tax expense	(10,857)		(6,944)		(27,443)		(17,238)
Net income	$	202,945	$	198,856	$	622,431	$	623,046

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

As of September 30, 2024, the Company was under agreement to acquire seven stores at a total purchase price of $74,300. Acquisitions of all seven stores are scheduled to close in 2024.

As of September 30, 2024, the Company was involved in various legal proceedings and was subject to various claims and complaints arising in the ordinary course of business. Because litigation is inherently unpredictable, the outcome of these matters cannot presently be determined with any degree of certainty. In accordance with applicable accounting guidance, management establishes an accrued liability for litigation when those matters present loss contingencies that are both probable and reasonably estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. The estimated loss, if any, is based upon currently available information and is subject to significant judgment, a variety of assumptions, and known and unknown uncertainties. The Company could in the future incur judgments or enter into settlements of claims that could have a material adverse effect on its results of operations in any particular period, notwithstanding the fact that the Company is currently vigorously defending any legal proceedings against it.

Although there can be no assurance, the Company is not aware of any material environmental liability, for which it believes it will be ultimately responsible, that could have a material adverse effect on its financial condition or results of operations. However, changes in applicable environmental laws and regulations, the uses and conditions of properties in the vicinity of the Company’s stores, the activities of its tenants and other environmental conditions of which the Company is unaware with respect to its stores could result in future material environmental liabilities.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net income attributable to common stockholders	$ 193,210	$ 188,350	$ 592,194	$ 587,064

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Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements of the Company are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they may not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (including normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2024 are not necessarily indicative of results that may be expected for the year ending December 31, 2024. The condensed consolidated balance sheet as of December 31, 2023 has been derived from the Company’s audited financial statements as of that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the Securities and Exchange Commission.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07 – Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amended guidance requires the disclosure of incremental segment information, including significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and a reconciliation of segment profit or loss to net income. The title and position of the CODM must also be disclosed, along with how the CODM uses the reported measures to assess segment performance and to allocate resources. Pursuant to this ASU, the footnotes to the Company's consolidated financial statements may include incremental disclosures related to its two reportable segments: (1) self-storage operations and (2) tenant reinsurance. The compliance with this ASU will be required beginning with the Company's annual report on Form 10-K for the year ending December 31, 2024, followed by interim disclosures in quarterly reports on Form 10-Q thereafter, with early adoption permitted. The Company expects to adopt this ASU for its annual report on Form 10-K for the year ending December 31, 2024.

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Fair Value Disclosures (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2024, aggregated by the level in the fair value hierarchy within which those measurements fall. 

	Fair Value Measurements at Reporting Date Using
Description	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets - Cash flow hedge swap agreements	$	—	$	11,716	$	—
Other liabilities - Cash flow hedge swap agreements	$	—	$	6,093	$	—

Schedule of Fair Value of Financial Instruments

The fair values of the Company’s fixed-rate liabilities were as follows for the periods indicated:

	September 30, 2024				December 31, 2023
	Fair Value		Carrying Value		Fair Value		Carrying Value
Fixed rate debt	$	8,761,624	$	9,014,590	$	7,482,054	$	8,048,605

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Acquisitions and Dispositions (Tables)

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

Asset Acquisitions

The following table summarizes the fair value of total consideration transferred in the Life Storage Merger:

Consideration Type	July 20, 2023
Common stock	$	11,353,338
OP units	249,470
Cash for payoff of Life Storage credit facility and debt	1,192,000
Transaction Costs	55,318
Total consideration	$	12,850,127

The following table summarizes the estimated fair values assigned to the assets acquired and liabilities assumed:

	July 20, 2023
Real estate assets	$	14,587,735
Equity investment in joint venture partnerships	325,250
Cash and other assets	107,423
Intangible assets - other	82,000
Trade name	50,000
Unsecured senior notes	(2,106,866)
Accounts payable, accrued expenses and other liabilities	(191,077)
Noncontrolling interests	(4,338)
Fair value of net assets acquired	$	12,850,127

All store acquisitions are considered asset acquisitions under ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.”

														Total
Period	Number of Stores	Cash Paid		Loan Assumed		Finance Lease Liability		Investments in Real Estate Ventures		Net Liabilities/ (Assets) Assumed		Value of Equity Issued		Real estate assets
Q3 2024	11	$	159,196	$	—	$	—	$	—	$	1,431	$	—	$	160,627
Q2 2024	3	27,644		—		—		—		97		$	—	27,741
Q1 2024	6	35,084		—		—		—		171		$	—	35,255
Total 2024	20	$	221,924	$	—	$	—	$	—	$	1,699	$	—	$	223,623
Q3 2023	3	$	18,578	$	—	$	—	$	—	$	86	$	—	$	18,664
Q2 2023	3	32,888		—		—		—		26		—		32,914
Q1 2023	1	13,111		—		—		—		6		—		13,117
Total 2023	7	$	64,577	$	—	$	—	$	—	$	118	$	—	$	64,695

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Real Estate Assets (Tables)

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

Schedule of Components of Real Estate Assets

The components of real estate assets are summarized as follows:

	September 30, 2024		December 31, 2023
Land	$	4,923,702	$	4,904,705
Buildings, improvements and other intangibles	22,032,745		21,664,224
Right of use asset - finance lease	143,286		143,842
Intangible assets - tenant relationships	322,771		321,019
Intangible lease rights	27,743		27,743
	27,450,247		27,061,533
Less: accumulated depreciation and amortization	(3,168,088)		(2,624,405)
Net operating real estate assets	24,282,159		24,437,128
Real estate under development/redevelopment	103,333		118,745
Real estate assets, net	$	24,385,492	$	24,555,873
Real estate assets held for sale included in real estate assets, net	$	131,527	$	—

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Other Assets (Tables)

9 Months Ended

Sep. 30, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Components of Other Assets

The components of other assets are summarized as follows:

	September 30, 2024		December 31, 2023
Goodwill	$	170,811	$	170,811
Receivables, net	112,748		134,716
Prepaid expenses and deposits	97,521		85,153
Other intangible assets, net	39,498		66,332
Trade name	—		50,000
Fair value of interest rate swaps	11,716		26,183
Equipment and fixtures, net	50,065		48,697
Deferred line of credit financing costs, net	8,108		9,787
Restricted cash	5,394		6,021
	$	495,861	$	597,700

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2024

Earnings Per Share [Abstract]

Schedule of Antidilutive Shares Excluded from Computation of Earnings Per Share

The following table presents the number of Common and Preferred Operating Partnership units as if converted into potential common shares that were excluded from the computation of earnings per share as their effect would have been anti-dilutive.

	For the Three Months Ended September 30,		For the Nine Months Ended September 30,
	2024	2023	2024	2023
	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)	Equivalent Shares (if converted)
Common OP Units	—	8,541,775	—	7,661,885
Series B Units	198,887	250,061	218,529	228,029
Series D Units	934,585	1,409,198	1,111,927	1,287,256
	1,133,472	10,201,034	1,330,456	9,177,170

Schedule of Computation of Earnings Per Common Share

The computation of earnings per common share is as follows for the periods presented:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Net income attributable to common stockholders	$	193,210	$	188,350	$	592,194	$	587,064
Earnings and dividends allocated to participating securities	(392)		(304)		(1,141)		(931)
Earnings for basic computations	192,818		188,046		591,053		586,133
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units	7,800		—		24,136		—
Net income for diluted computations	$	200,618	$	188,046	$	615,189	$	586,133
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	211,698,436		195,324,444		211,522,578		155,112,071
OP Units	8,597,656		—		8,651,915		—
Shares related to dilutive stock options	2,778		3,576		3,199		4,078
Average number of common shares outstanding - diluted	220,298,870		195,328,020		220,177,692		155,116,149
Earnings per common share
Basic	$	0.91	$	0.96	$	2.79	$	3.78
Diluted	$	0.91	$	0.96	$	2.79	$	3.78

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Investments in Unconsolidated Real Estate Entities (Tables)

9 Months Ended

Sep. 30, 2024

Equity Method Investments and Joint Ventures [Abstract]

Schedule of investments in unconsolidated real estate ventures

Net investments in unconsolidated real estate entities and cash distributions in unconsolidated real estate ventures consist of the following:

	Number of Stores	Equity Ownership %	Excess Profit % (1)	September 30,		December 31,
				2024		2023
PRISA Self Storage LLC	85	4%	4%	$	9,110	$	9,435
HF1 Sovran HHF Storage Holdings LLC	37	20%	20%	102,901		105,339
Storage Portfolio II JV LLC	36	10%	30%	(9,219)		(8,314)
Storage Portfolio IV JV LLC	32	10%	30%	47,491		48,184
Storage Portfolio I LLC	24	34%	49%	(43,430)		(42,487)
PR II EXR JV LLC	23	25%	25%	106,456		108,160
HF2 Sovran HHF Storage Holdings II LLC	22	15%	15%	41,039		41,613
HF5 Life Storage-HIERS Storage LLC	17	20%	20%	25,450		26,051
HF6 191 V Life Storage Holdings LLC	17	20%	20%	11,315		12,702
ESS-CA TIVS JV LP	16	55%	55%-65%	27,794		29,128
VRS Self Storage, LLC	16	45%	54%	(17,312)		(16,386)
HF10 Life Storage HHF Wasatch Holdings LLC	16	20%	20%	19,581		20,019
Other unconsolidated real estate ventures (2) (3)	119	10%-50%	10%-50%	314,864		317,104
SmartStop Self Storage REIT, Inc. Preferred Stock (4)	n/a	n/a	n/a	200,000		200,000
Strategic Storage Trust VI, Inc. Preferred Stock (5)	n/a	n/a	n/a	150,000		150,000
Net Investments in and Cash distributions in unconsolidated real estate entities	460			$	986,040	$	1,000,548

(1)    Includes pro-rata equity ownership share and promoted interest.

(2)    In August 2024, the ESS Bristol Investments LLC unconsolidated joint venture sold five of its eight stores to another of the Company's unconsolidated joint ventures, and the Company recognized a gain of $10,324 for its pro rata share of the transaction. The Company then acquired its partner's membership interest in the remaining three stores held by ESS Bristol Investments LLC, which is now presented under real estate assets, net on the Company's condensed consolidated balance sheets.

(3)    In September 2024, the Company sold its membership interest in the Alan Jathoo JV LLC unconsolidated joint venture, which held nine stores, to its partner in such joint venture and recognized a gain of $3,406 on the transaction. This gain and the gain from the ESS Bristol Investments LLC transaction are presented in equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest on the Company's condensed consolidated statements of operations for the three months ended September 30, 2024.

(4)    In October 2019, the Company invested $200,000 in shares of convertible preferred stock of SmartStop with a dividend rate of 6.25% per annum, subject to increase after five years. The preferred shares are generally not redeemable for five years, except in the case of a change of control or initial listing of SmartStop. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities line on the Company's condensed consolidated statements of operations.

(5)    In May 2023, the Company invested $150,000 in shares of convertible preferred stock of Strategic Storage with a dividend rate of 8.35% per annum, subject to increase after five years. The preferred shares are generally not redeemable for three years, except in the case of a change of control or initial listing of Strategic Storage. Dividend income from this investment is included on the equity in earnings and dividend income from unconsolidated real estate entities on the Company's condensed consolidated statements of operations.

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Investments in Debt Securities and Notes Receivable (Tables)

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Investments in Debt Securities and Bridge Loans Receivable

Information about these balances is as

follows:

	September 30, 2024		December 31, 2023
Debt securities - Preferred Stock	$	300,000	$	300,000
Notes Receivable - Bridge Loans	1,032,244		594,727
Dividends and Interest Receivable	6,375		10,042
	$	1,338,619	$	904,769

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Debt (Tables)

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Schedule of Unsecured Senior Notes and Components of Debt

The components of term debt are summarized as follows:

Term Debt	September 30, 2024		December 31, 2023
Secured notes payable (1)	$	1,018,209	$	1,279,105
Unsecured term loans	2,200,000		2,660,000
Unsecured senior notes	7,725,000		6,725,000
Total	10,943,209		10,664,105
Less: Discount on unsecured senior notes (2)	(241,786)		(274,350)
Less: Unamortized debt issuance costs	(57,593)		(55,007)
Total	$	10,643,830	$	10,334,748
(1) The loans are collateralized by mortgages on real estate assets and the assignment of rents.
(2) Unsecured senior notes from the Life Storage Merger were recorded at fair value, resulting in a discount to be amortized over the term of the debt.

Schedule of Maturities of Notes Payable

The following table summarizes the scheduled maturities of term debt, excluding available extensions, at September 30, 2024:

Year	Amount
2024	$	—
2025	782,722
2026	1,409,525
2027	1,312,689
2028	1,328,100
2029	1,516,807
2030	1,343,366
2031	1,650,000
2032	600,000
Thereafter	1,000,000
	$	10,943,209

Schedule of Information on Lines of Credit

The following table presents information on the Company’s lines of credit, the proceeds of which are used to repay debt and for general corporate purposes, for the periods indicated:

	As of September 30, 2024
Revolving Lines of Credit	Amount Drawn		Capacity		Interest Rate	Maturity	Basis Rate (1)
Credit Line 1 (2)	$	55,000	$	140,000	6.31%	7/1/2026	SOFR plus 1.35%
Credit Line 2 (3)(4)	829,000		2,000,000		5.84%	6/22/2027	SOFR plus 0.875%
	$	884,000	$	2,140,000
(1) Daily Simple Secured Overnight Financing Rate (“SOFR”)
(2) Secured by mortgages on certain real estate assets. On January 13, 2023, the maturity date was extended to July 1, 2026 with one extension of one year available.
(3) Unsecured. On June 22, 2023, the maturity date was extended to June 22, 2027 with two six-month extensions available. On August 11, 2023, the capacity was increased by $60.0 million.
(4) Basis Rate as of September 30, 2024. Rate is subject to change based on the Company's investment grade rating.

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Derivatives (Tables)

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of balance sheet classification and fair value of entity's derivative financial instruments

The table below presents the fair values of the Company’s derivative financial instruments as well as their classification on the condensed consolidated balance sheets:

	Asset / Liability Derivatives
Derivatives designated as hedging instruments:	September 30, 2024		December 31, 2023
Other assets	$	11,716	$	26,183
Other liabilities	$	6,093	$	5,030

Schedule of information relating to gain (loss) recognized on swap agreements

The table below presents the effect of the Company’s derivative financial instruments on the condensed consolidated statements of operations for the periods presented. No tax effect has been presented as the derivative instruments are held by the Company:

	Gain (loss) recognized in OCI for the Three Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Three Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	(17,931)	$	9,146	Interest expense	$	6,965	$	11,415

	Gain (loss) recognized in OCI for the Nine Months Ended September 30,				Location of amounts reclassified from OCI into income	Gain (loss) reclassified from OCI for the Nine Months Ended September 30,
Type	2024		2023			2024		2023
Swap Agreements	$	7,363	$	27,212	Interest expense	$	22,042	$	31,398

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Noncontrolling Interest Represented by Preferred Operating Partnership Units (Tables)

9 Months Ended

Sep. 30, 2024

Noncontrolling Interest [Abstract]

Balances of OP Units

The balances for each of the specific Preferred OP Units as presented in the Statement of Noncontrolling Interests and Equity as of the periods indicated are as follows:

	September 30, 2024		December 31, 2023
Series B Units	$	33,567	$	33,567
Series D Units	157,739		188,793
	$	191,306	$	222,360

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Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests (Tables)

9 Months Ended

Sep. 30, 2024

Noncontrolling Interest [Abstract]

Redeemable Noncontrolling Interest

OP Unit activity is summarized as follows for the periods presented:

	For the Nine Months Ended September 30,
	2024		2023
OP Units redeemed for common stock	308,024		—
OP Units issued in conjunction with business combination and acquisitions	—		1,674,748
Value of OP Units issued in conjunction with business combination and acquisitions	$	—	$	249,470

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Schedule of Financial Information of Business Segments

Financial information for the Company’s business segments is set forth below:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2024		2023		2024		2023
Revenues:
Self-Storage Operations	$	710,874	$	650,887	$	2,096,018	$	1,525,596
Tenant Reinsurance	84,048		69,128		249,100		165,265
Total segment revenues	$	794,922	$	720,015	$	2,345,118	$	1,690,861
Operating expenses:
Self-Storage Operations	$	209,035	$	185,194	$	610,455	$	416,997
Tenant Reinsurance	17,510		19,130		55,646		37,701
Total segment operating expenses	$	226,545	$	204,324	$	666,101	$	454,698
Net operating income:
Self-Storage Operations	$	501,839	$	465,693	$	1,485,563	$	1,108,599
Tenant Reinsurance	66,538		49,998		193,454		127,564
Total segment net operating income:	$	568,377	$	515,691	$	1,679,017	$	1,236,163
Other components of net income:
Management fees and other income	$	29,882	$	28,019	$	89,888	$	71,609
Life Storage Merger transition costs	—		(54,174)		—		(54,174)
General and administrative expense	(39,750)		(37,406)		(123,373)		(107,011)
Depreciation and amortization expense	(195,046)		(152,338)		(586,821)		(309,914)
Loss on real estate assets held for sale	(8,961)		—		(63,620)		—
Interest expense	(142,855)		(122,899)		(412,875)		(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)		(8,228)		(32,563)		(8,228)
Interest income	34,947		22,092		89,746		62,607
Equity in earnings and dividend income from unconsolidated real estate entities	16,246		15,043		48,508		38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets	13,730		—		13,730		—
Impairment of trade name	(51,763)		—		(51,763)		—
Income tax expense	(10,857)		(6,944)		(27,443)		(17,238)
Net income	$	202,945	$	198,856	$	622,431	$	623,046

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Organization (Detail)	Sep. 30, 2024 state store
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating storage facilities in which the entity has equity interests (in stores)	2,401
Number of stores owned by franchisees and third parties	1,461
Number of operating stores owned and/or managed	3,862
Number of states in which operating storage facilities are located | state	42

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Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2024 segment
Accounting Policies [Abstract]
Number of reportable segments	2

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Fair Value Disclosures - Assets and Liabilities on a Recurring Basis (Detail) - Recurring Basis $ in Thousands	Sep. 30, 2024 USD ($)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	$ 0
Other liabilities	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	11,716
Other liabilities	6,093
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	0
Other liabilities	$ 0

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Fair Value Disclosures - Schedule of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Fair Value of Financial Instruments [Line Items]
Fixed rate debt	$ 8,761,624	$ 7,482,054
Carrying Value
Fair Value of Financial Instruments [Line Items]
Fixed rate debt	$ 9,014,590	$ 8,048,605

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Fair Value Disclosures - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) store	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) store	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Fair Value of Financial Instruments [Line Items]
Number of operating stores held-for-sale | store	17		17
Real estate assets held for sale included in real estate assets, net	$ 131,527		$ 131,527		$ 0
Loss on real estate assets held for sale	(8,961)	$ 0	(63,620)	$ 0
Nine Stores
Fair Value of Financial Instruments [Line Items]
Real estate assets held for sale included in real estate assets, net	$ 70,952		70,952
Loss on real estate assets held for sale			$ (63,620)

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Acquisitions and Dispositions - Additional Information (Details) $ in Thousands			9 Months Ended
	Jul. 25, 2023 USD ($)	Jul. 20, 2023 USD ($) joint_venture store shares	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Asset Acquisition [Line Items]
Total consideration paid for repurchase			$ 6,062,896	$ 4,617,755
Life Storage, Inc
Asset Acquisition [Line Items]
Total consideration paid for repurchase		$ 375,000
Unsecured senior notes
Asset Acquisition [Line Items]
Senior note balances			$ 7,725,000		$ 6,725,000
Unsecured senior notes | Senior Notes, Assumed From Life Storage
Asset Acquisition [Line Items]
Total consideration paid for repurchase	$ 2,351,100
Senior note balances	$ 48,900
Life Storage, Inc
Asset Acquisition [Line Items]
Wholly-owned stores acquired | store		757
Joint venture stores acquired | joint_venture		1
Equity interest issued conversion ratio (in shares) | shares		0.895
Consideration transferred		$ 11,602,808
Real estate assets, estimated useful life		39 years
Tenant relationships, estimated useful life		18 months
Intangible assets, amortization period		36 months
Life Storage, Inc | Line of Credit
Asset Acquisition [Line Items]
Extinguishment of liability component		$ 1,160,000
Life Storage, Inc | Secured Debt
Asset Acquisition [Line Items]
Total consideration paid for repurchase		$ 32,000

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Acquisitions and Dispositions - Asset Acquisition - Life Storage (Details) - USD ($) $ in Thousands		3 Months Ended						9 Months Ended
	Jul. 20, 2023	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Asset Acquisition [Line Items]
Total consideration		$ 160,627	$ 27,741	$ 35,255	$ 18,664	$ 32,914	$ 13,117	$ 223,623	$ 64,695
Life Storage, Inc
Asset Acquisition [Line Items]
Equity	$ 11,602,808
Cash for payoff of Life Storage credit facility and debt	1,192,000
Transaction Costs	55,318
Total consideration	12,850,127
Real estate assets	14,587,735
Equity investment in joint venture partnerships	325,250
Cash and other assets	107,423
Intangible assets - other	82,000
Trade name	50,000
Unsecured senior notes	(2,106,866)
Accounts payable, accrued expenses and other liabilities	(191,077)
Noncontrolling interests	(4,338)
Fair value of net assets acquired	12,850,127
Life Storage, Inc | Common stock
Asset Acquisition [Line Items]
Equity	11,353,338
Life Storage, Inc | OP units
Asset Acquisition [Line Items]
Equity	$ 249,470

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Acquisitions and Dispositions - Asset Acquisitions - Schedule of Operating Properties Acquired (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024 USD ($) store	Jun. 30, 2024 USD ($) store	Mar. 31, 2024 USD ($) store	Sep. 30, 2023 USD ($) store	Jun. 30, 2023 USD ($) store	Mar. 31, 2023 USD ($) store	Sep. 30, 2024 USD ($) store	Sep. 30, 2023 USD ($) store
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Number of Stores | store	11	3	6	3	3	1	20	7
Cash Paid	$ 159,196	$ 27,644	$ 35,084	$ 18,578	$ 32,888	$ 13,111	$ 221,924	$ 64,577
Loan Assumed	0	0	0	0	0	0	0	0
Finance Lease Liability	0	0	0	0	0	0	0	0
Investment in unconsolidated real estate ventures	0	0	0	0	0	0	0	0
Net Liabilities/ (Assets) Assumed	1,431	97	171	86	26	6	1,699	118
Value of units issued	0	0	0	0	0	0	0	0
Total	$ 160,627	$ 27,741	$ 35,255	$ 18,664	$ 32,914	$ 13,117	$ 223,623	$ 64,695

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Real Estate Assets - Schedule of Components of Real Estate Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Real Estate [Abstract]
Land	$ 4,923,702	$ 4,904,705
Buildings, improvements and other intangibles	22,032,745	21,664,224
Right of use asset - finance lease	143,286	143,842
Intangible assets - tenant relationships	322,771	321,019
Intangible lease rights	27,743	27,743
Gross operating real estate assets	27,450,247	27,061,533
Less: accumulated depreciation and amortization	(3,168,088)	(2,624,405)
Net operating real estate assets	24,282,159	24,437,128
Real estate under development/redevelopment	103,333	118,745
Real estate assets, net	24,385,492	24,555,873
Real estate assets held for sale included in real estate assets, net	$ 131,527	$ 0

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Real Estate Assets - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2024 store	Sep. 30, 2024 USD ($) store	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) store	Sep. 30, 2023 USD ($)
Real Estate [Abstract]
Number of stores with amended leases	27
Number of stores with new triple-net lease agreement	12
Number of operating stores held-for-sale	17	17		17
Loss on real estate assets held for sale | $		$ (8,961)	$ 0	$ (63,620)	$ 0

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Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Goodwill	$ 170,811		$ 170,811		$ 170,811
Receivables, net	112,748		112,748		134,716
Prepaid expenses and deposits	97,521		97,521		85,153
Other intangible assets, net	39,498		39,498		66,332
Trade name	0		0		50,000
Fair value of interest rate swaps	11,716		11,716		26,183
Equipment and fixtures, net	50,065		50,065		48,697
Deferred line of credit financing costs, net	8,108		8,108		9,787
Restricted cash	5,394	$ 7,000	5,394	$ 7,000	6,021	$ 4,867
Other assets, net	495,861		495,861		$ 597,700
Impairment of Life Storage trade name	$ (51,763)	$ 0	$ (51,763)	$ 0

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Earnings Per Common Share - Additional Information (Detail) - $ / shares	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Average share price (in dollars per share)	$ 168.78	$ 134.24

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Earnings Per Common Share - Antidilutive Shares (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per common share (in shares)	1,133,472	10,201,034	1,330,456	9,177,170
Common OP Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per common share (in shares)	0	8,541,775	0	7,661,885
Series B Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per common share (in shares)	198,887	250,061	218,529	228,029
Series D Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per common share (in shares)	934,585	1,409,198	1,111,927	1,287,256

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Earnings Per Common Share - Schedule of Computation (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common stockholders	$ 193,210	$ 188,350	$ 592,194	$ 587,064
Earnings and dividends allocated to participating securities	(392)	(304)	(1,141)	(931)
Earnings for basic computations	192,818	188,046	591,053	586,133
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units	7,800	0	24,136	0
Net income for diluted computations	$ 200,618	$ 188,046	$ 615,189	$ 586,133
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	211,698,436	195,324,444	211,522,578	155,112,071
OP Units (in shares)	8,597,656	0	8,651,915	0
Shares related to exchangeable senior notes and dilutive stock options (in shares)	2,778	3,576	3,199	4,078
Average number of common shares outstanding - diluted (in shares)	220,298,870	195,328,020	220,177,692	155,116,149
Earnings per common share
Basic (in dollars per share)	$ 0.91	$ 0.96	$ 2.79	$ 3.78
Diluted (in dollars per share)	$ 0.91	$ 0.96	$ 2.79	$ 3.78

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Investments in Unconsolidated Real Estate Entities (Details) $ in Thousands	1 Months Ended
	Sep. 30, 2024 USD ($) property joint_venture	Aug. 31, 2024 USD ($) store	May 31, 2023 USD ($)	Oct. 31, 2019 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	460
Investment balance	$ 986,040				$ 1,000,548
ESS Bristol Investments LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | store		8
Number of stores sold | store		5
Gain on sale of joint ventures		$ 10,324
PRISA Self Storage LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	85
Equity Ownership %	4.00%
Excess Profit %	4.00%
Investment balance	$ 9,110				9,435
HF1 Sovran HHF Storage Holdings LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	37
Equity Ownership %	20.00%
Excess Profit %	20.00%
Investment balance	$ 102,901				105,339
Storage Portfolio II JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	36
Equity Ownership %	10.00%
Excess Profit %	30.00%
Investment balance	$ (9,219)				(8,314)
Storage Portfolio IV JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	32
Equity Ownership %	10.00%
Excess Profit %	30.00%
Investment balance	$ 47,491				48,184
Storage Portfolio I LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	24
Equity Ownership %	34.00%
Excess Profit %	49.00%
Investment balance	$ (43,430)				(42,487)
PR II EXR JV LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	23
Equity Ownership %	25.00%
Excess Profit %	25.00%
Investment balance	$ 106,456				108,160
HF2 Sovran HHF Storage Holdings II LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	22
Equity Ownership %	15.00%
Excess Profit %	15.00%
Investment balance	$ 41,039				41,613
HF5 Life Storage-HIERS Storage LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	17
Equity Ownership %	20.00%
Excess Profit %	20.00%
Investment balance	$ 25,450				26,051
HF6 191 V Life Storage Holdings LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	17
Equity Ownership %	20.00%
Excess Profit %	20.00%
Investment balance	$ 11,315				12,702
ESS-CA TIVS JV LP
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	16
Equity Ownership %	55.00%
Investment balance	$ 27,794				29,128
ESS-CA TIVS JV LP | Minimum
Schedule of Equity Method Investments [Line Items]
Excess Profit %	55.00%
ESS-CA TIVS JV LP | Maximum
Schedule of Equity Method Investments [Line Items]
Excess Profit %	65.00%
VRS Self Storage, LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	16
Equity Ownership %	45.00%
Excess Profit %	54.00%
Investment balance	$ (17,312)				(16,386)
HF10 Life Storage HHF Wasatch Holdings LLC
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	16
Equity Ownership %	20.00%
Excess Profit %	20.00%
Investment balance	$ 19,581				20,019
Other unconsolidated real estate ventures (2) (3)
Schedule of Equity Method Investments [Line Items]
Number of Stores | property	119
Investment balance	$ 314,864				317,104
Other unconsolidated real estate ventures (2) (3) | Minimum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %	10.00%
Other unconsolidated real estate ventures (2) (3) | Maximum
Schedule of Equity Method Investments [Line Items]
Equity Ownership %	50.00%
SmartStop Self Storage REIT, Inc. Preferred Stock
Schedule of Equity Method Investments [Line Items]
Investment balance	$ 200,000			$ 200,000	200,000
Investment, preferred dividend rate				6.25%
Period after which preferred stock dividend is subject to increase				5 years
Investment redemption restriction period				5 years
Strategic Storage Trust VI, Inc. Preferred Stock
Schedule of Equity Method Investments [Line Items]
Investment balance	$ 150,000				$ 150,000
Investment in shares			$ 150,000
Dividend rate, percentage			8.35%
Dividend rate increase, threshold			5 years
Redemption period			3 years
Alan Jathoo JV LLC
Schedule of Equity Method Investments [Line Items]
Number of stores sold | joint_venture	9
Gain on sale of joint ventures	$ 3,406
ESS Bristol Investments LLC
Schedule of Equity Method Investments [Line Items]
Number of stores purchased | store		3

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Investments in Debt Securities and Notes Receivable - Schedule (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Dividends and Interest Receivable	$ 6,375	$ 10,042
Investments in debt securities and notes receivable	1,338,619	904,769
Notes Receivable-Bridge Loans
Schedule of Held-to-maturity Securities [Line Items]
Notes Receivable - Bridge Loans	1,032,244	594,727
JCAP Series A Preferred Stock
Schedule of Held-to-maturity Securities [Line Items]
Debt securities - Preferred Stock	$ 300,000	$ 300,000

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Investments in Debt Securities and Notes Receivable - Additional Information (Details) $ in Thousands	1 Months Ended		3 Months Ended	9 Months Ended
	Dec. 31, 2022 USD ($) shares	Nov. 30, 2020 USD ($) extension_option shares	Sep. 30, 2024 debt_security extension_option Rate	Sep. 30, 2024 USD ($) extension_option Rate	Sep. 30, 2023 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Investment in debt securities		$ 300,000
Debt securities, term		6 years
Debt securities, extension option | extension_option		2
Debt securities, extension term		1 year
Debt securities, period after which preferred dividends increase annually		6 years
Bridge loans, percent of notes held as mortgage receivables | Rate			71.00%	71.00%
Bridge loans, extension option | extension_option			2	2
Bridge loans, extension term				1 year
Proceeds from sale of notes receivable				$ 175,335	$ 134,064
Issuance and purchase of notes receivable				$ 739,702	$ 210,712
Number of debt securities past due or nonaccrual status | debt_security			1
Minimum
Schedule of Held-to-maturity Securities [Line Items]
Loan to value ratio				0.70
Maximum
Schedule of Held-to-maturity Securities [Line Items]
Loan to value ratio				0.80
Notes Receivable-Bridge Loans
Schedule of Held-to-maturity Securities [Line Items]
Bridge loans, original maturities				3 years
Principal amount of notes sold				$ 175,335
Proceeds from sale of notes receivable				175,335
Issuance and purchase of notes receivable				636,215
Payment of draws from interest holdbacks				$ 39,709
JCAP Series A Preferred Stock
Schedule of Held-to-maturity Securities [Line Items]
Investment in debt securities		$ 200,000
Investment in debt securities (in shares) | shares		200,000
Debt securities, dividend rate		8.50%
JCAP Series B Preferred Stock
Schedule of Held-to-maturity Securities [Line Items]
Investment in debt securities		$ 100,000
Investment in debt securities (in shares) | shares		100,000
JCAP Series D Preferred Stock
Schedule of Held-to-maturity Securities [Line Items]
Shares exchanged (in shares) | shares	300,000
Shares exchanged, value	$ 300,000

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Debt - Schedule of Components of Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Notes Payable
Debt Instrument [Line Items]
Term debt	$ 1,018,209	$ 1,279,105
Less: Unamortized debt issuance costs	(57,593)	(55,007)
Unsecured Term Loans
Debt Instrument [Line Items]
Term debt	2,200,000	2,660,000
Unsecured senior notes
Debt Instrument [Line Items]
Term debt	7,725,000	6,725,000
Discount on unsecured senior notes	(241,786)	(274,350)
Term Debt
Debt Instrument [Line Items]
Term debt	10,943,209	10,664,105
Total	$ 10,643,830	$ 10,334,748

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Debt - Schedule of Maturities of Notes Payable (Details) - Term Debt - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
2024	$ 0
2025	782,722
2026	1,409,525
2027	1,312,689
2028	1,328,100
2029	1,516,807
2030	1,343,366
2031	1,650,000
2032	600,000
Thereafter	1,000,000
Total	$ 10,943,209	$ 10,664,105

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Debt - Additional Information (Details)		9 Months Ended
	Jan. 13, 2023 Year	Sep. 30, 2024 USD ($) extension_option
Debt Instrument [Line Items]
Fixed rate to total debt percentage		78.30%
Fixed rate debt		4.00%
Variable rate debt		6.00%
Weighted average interest rate		4.50%
Credit Line 1
Debt Instrument [Line Items]
Capacity | $		$ 140,000,000
Number of extensions available | Year	1
Extension term	1 year
Basis spread on variable rate		1.35%
Line of Credit
Debt Instrument [Line Items]
Number of extensions available | extension_option		2
Extension term		6 months
Line of Credit | Base rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.00%
Line of Credit | Base rate | Investment grade election | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0.00%
Line of Credit | Base rate | Investment grade election | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		1.20%
Line of Credit | Federal funds rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Line of Credit | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Line of Credit | SOFR | Investment grade election | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0.70%
Line of Credit | SOFR | Investment grade election | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.20%

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Debt - Schedule of Information on Lines of Credit (Details)			9 Months Ended
	Jun. 22, 2023 extension_option	Jan. 13, 2023 Year	Sep. 30, 2024 USD ($) extension_option	Dec. 31, 2023 USD ($)	Aug. 11, 2023 USD ($)
Debt Instrument [Line Items]
Amount Drawn			$ 884,000,000	$ 682,000,000
Line of Credit
Debt Instrument [Line Items]
Number of extensions available | extension_option			2
Extension term			6 months
Credit Line 1
Debt Instrument [Line Items]
Amount Drawn			$ 55,000,000
Capacity			$ 140,000,000
Interest Rate			6.31%
Basis spread on variable rate			1.35%
Number of extensions available | Year		1
Extension term		1 year
Credit Line 2
Debt Instrument [Line Items]
Amount Drawn			$ 829,000,000
Capacity			$ 2,000,000,000		$ 60,000,000.0
Interest Rate			5.84%
Basis spread on variable rate			0.875%
Number of extensions available | extension_option	2
Extension term	6 months
Lines Of Credit
Debt Instrument [Line Items]
Amount Drawn			$ 884,000,000
Capacity			$ 2,140,000,000

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Derivatives - Additional Information (Detail) $ in Thousands	Sep. 30, 2024 USD ($) derivative
Derivative [Line Items]
Amount reclassified as an increase to interest income	$ (7,681)
Number of derivative financial instruments | derivative	14
Combined notional amount	$ 1,382,568
Derivatives with contingent features, net liability position	5,423
Derivative, termination value	$ 5,423
Interest Rate Swap, Forward-Starting
Derivative [Line Items]
Number of derivative financial instruments | derivative	2

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Derivatives - Schedule of Balance Sheet Classification and Fair Value of Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Other assets
Derivative [Line Items]
Other assets	$ 11,716	$ 26,183
Other liabilities
Derivative [Line Items]
Other liabilities	$ 6,093	$ 5,030

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Derivatives - Gain (Loss) Recognized on Swap Agreements (Detail) - Swap Agreements - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Gain (loss) recognized in OCI	$ (17,931)	$ 9,146	$ 7,363	$ 27,212
Gain (loss) reclassified from OCI	$ 6,965	$ 11,415	$ 22,042	$ 31,398

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Stockholders' Equity (Detail) $ / shares in Units, $ in Thousands			9 Months Ended	12 Months Ended	32 Months Ended
	Apr. 15, 2024 USD ($) sales_agent shares	Jul. 20, 2023 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) shares	Dec. 31, 2023 shares	Apr. 14, 2024 shares	Nov. 13, 2023 USD ($)
Class of Stock [Line Items]
Share repurchase program, authorized amount						$ 500,000
Repurchase of common stock (in shares) | shares			0	0
Share repurchase program, remaining authorization			$ 500,000
Issuance of common stock in conjunction with acquisitions (in shares) | shares		76,217,359
Price per share (dollars per share) | $ / shares		$ 148.96
Issuance of common stock in conjunction with acquisitions, value		$ 11,353,338
At the Market Equity Distribution Agreement
Class of Stock [Line Items]
Aggregate offering price of common shares	$ 800,000
Number of sales agents | sales_agent	9
Shares issued (in shares) | shares	0				0

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Noncontrolling Interest Represented by Preferred Operating Partnership Units - Balances of OP Units (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Noncontrolling Interest [Line Items]
Noncontrolling interest represented by Preferred Operating Partnership units, net	$ 191,306	$ 222,360
Series B Units
Noncontrolling Interest [Line Items]
Noncontrolling interest represented by Preferred Operating Partnership units, net	33,567	33,567
Series D Units
Noncontrolling Interest [Line Items]
Noncontrolling interest represented by Preferred Operating Partnership units, net	$ 157,739	$ 188,793

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Noncontrolling Interest Represented by Preferred Operating Partnership Units - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Noncontrolling Interest [Line Items]
Preferred units outstanding (in shares)	8,577,570
Series B Units
Noncontrolling Interest [Line Items]
Preferred units outstanding (in shares)	1,342,727
Liquidation value (in dollars per share)	$ 25.00
Fixed liquidation value	$ 33,567
Annual rate of return percentage	6.00%
Series D Units
Noncontrolling Interest [Line Items]
Liquidation value (in dollars per share)	$ 25.00
Fixed liquidation value	$ 157,739
Fixed liquidation value (in shares)	6,309,567
Redemption of Operating Partnership units (in shares)	1,242,168
Redemption of operating partnership units for common stock (in shares)	213,661
Series D Units | Minimum
Noncontrolling Interest [Line Items]
Annual rate of return percentage	3.00%
Series D Units | Maximum
Noncontrolling Interest [Line Items]
Annual rate of return percentage	5.00%
Series A Units
Noncontrolling Interest [Line Items]
Preferred units outstanding (in shares)	0	0
Series C Units
Noncontrolling Interest [Line Items]
Preferred units outstanding (in shares)	0	0

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Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests - Additional Information (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($) joint_venture store $ / shares shares	Dec. 31, 2023 USD ($)
Noncontrolling Interest [Line Items]
Note receivable interest rate	5.00%
Period used as a denomination to determine the average closing price of common stock	10 days
Ten day average closing stock price (in dollars per share) | $ / shares	$ 180.16
Preferred units outstanding (in shares) | shares	8,577,570
Consideration to be paid on redemption of common OP units | $	$ 1,545,335
Number of consolidated joint ventures | joint_venture	9
Total number of stores in consolidated joint venture | store	13
Number of joint ventures operating store | joint_venture	7
Number of joint ventures with property under development | store	6
Operating Partnership
Noncontrolling Interest [Line Items]
Loan receivable, reduction of noncontrolling interests | $	$ 1,900	$ 1,900
Common stock
Noncontrolling Interest [Line Items]
OP units conversion ratio	1
Operating Partnership
Noncontrolling Interest [Line Items]
Ownership interest held	95.60%
Ownership interest held by joint venture partner	4.40%
Other noncontrolling interests | Maximum
Noncontrolling Interest [Line Items]
Ownership interest held by joint venture partner	17.00%

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Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests - Schedule of OP Unit Activity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jul. 20, 2023
Noncontrolling Interest [Abstract]
OP Units redeemed for common stock (in shares)	308,024	0
OP Units issued in conjunction with business combination acquisitions (in units)		1,674,748	0
Value of OP Units issued in conjunction with business combination and acquisitions		$ 249,470	$ 0

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Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2024 segment
Segment Reporting [Abstract]
Number of reportable segments	2

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Segment Information - Schedule of Financial Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenues:	$ 824,804	$ 748,034	$ 2,435,006	$ 1,762,470
Operating expenses:	461,341	448,242	1,376,295	925,797
Net operating income:	302,739	299,792	943,328	836,673
Management fees and other income	29,882	28,019	89,888	71,609
Life Storage Merger transition costs	0	54,174	0	54,174
General and administrative expense	(39,750)	(37,406)	(123,373)	(107,011)
Depreciation and amortization expense	(195,046)	(152,338)	(586,821)	(309,914)
Loss on real estate assets held for sale	(8,961)	0	(63,620)	0
Interest expense	(142,855)	(122,899)	(412,875)	(289,370)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes	(11,005)	(8,228)	(32,563)	(8,228)
Interest income	34,947	22,092	89,746	62,607
Equity in earnings and dividend income from unconsolidated real estate entities	16,246	15,043	48,508	38,602
Equity in earnings of unconsolidated real estate ventures - gain on sale of real estate assets and sale of a joint venture interest	13,730	0	13,730	0
Impairment of trade name	(51,763)	0	(51,763)	0
Income tax expense	(10,857)	(6,944)	(27,443)	(17,238)
Operating Segments
Segment Reporting Information [Line Items]
Revenues:	794,922	720,015	2,345,118	1,690,861
Operating expenses:	226,545	204,324	666,101	454,698
Net operating income:	568,377	515,691	1,679,017	1,236,163
Self-Storage Operations | Operating Segments
Segment Reporting Information [Line Items]
Revenues:	710,874	650,887	2,096,018	1,525,596
Operating expenses:	209,035	185,194	610,455	416,997
Net operating income:	501,839	465,693	1,485,563	1,108,599
Tenant Reinsurance | Operating Segments
Segment Reporting Information [Line Items]
Revenues:	84,048	69,128	249,100	165,265
Operating expenses:	17,510	19,130	55,646	37,701
Net operating income:	$ 66,538	$ 49,998	$ 193,454	$ 127,564

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Commitments and Contingencies (Detail) $ in Thousands	Sep. 30, 2024 USD ($) store
Commitment to acquire stores
Other Commitments [Line Items]
Number of real estate properties to be acquired	7
Purchase price | $	$ 74,300
Commitment to acquire stores, scheduled to close in current fiscal year
Other Commitments [Line Items]
Number of real estate properties to be acquired	7