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Real Estate Properties (Tables)
 12 Months Ended
Dec. 31, 2024
Real Estate [Abstract]  
Schedule of Disposal Groups
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
(Loss) on Impairment of Real Estate
March 20241
Chicago, IL (2)
248,000 $38,500 $(2,448)$— 
July 20241Malden, MA126,000 7,800 (10)(13,973)
August 20243Indianapolis, IN434,000 10,100 729 (50,851)
September 20241Atlanta, GA126,000 17,610 8,690 — 
September 20241San Jose, CA64,000 10,800 (954)(819)
November 20241Colorado Springs, CO156,000 26,164 12,962 — 
November 20241Rocklin, CA19,000 2,627 1,084 — 
November 20243Lakewood, CO213,000 8,100 (9,132)— 
December 20245Atlanta, GA379,000 18,100 79 (21,937)
December 20241Florence, KY168,000 3,250 (6,966)— 
December 20241Sacramento, CA338,000 21,000 (6,502)(33,902)
December 20241Reston, VA131,000 7,200 (869)(18,540)
December 20241Kansas City, MO87,000 8,000 32 (4,370)
December 20241Westford, MA175,000 5,100 (6,481)(3,554)
December 20242Provo, UT125,000 15,000 2,376 — 
242,789,000 $199,351 $(7,410)$(147,946)
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Property was classified as held for sale as of December 31, 2023. We recorded an $11,299 loss on impairment of real estate during the year ended December 31, 2023 to reduce the carrying value of this property to its estimated fair value less costs to sell as of December 31, 2023.
As of December 31, 2024, we had six properties, that are under agreement to sell for an aggregate sales price of $54,763, excluding closing costs, five of which are classified as held for sale in our consolidated balance sheet, as summarized below:
Date of Sale AgreementNumber of PropertiesLocationRentable Square Feet
Gross Sales Price (1)
(Loss) on Impairment of Real Estate
September 20242Santa Clara, CA149,000 $21,150 $(11,041)
October 20242Tempe, AZ101,000 10,738 — 
December 20241Detroit, MI56,000 4,750 (8,001)
December 20241
Reston, VA (2)
275,000 18,125 — 
6581,000 $54,763 $(19,042)
(1)Gross sales price is the contract price, excluding closing costs.
(2)Property did not meet held for sale criteria as of December 31, 2024.
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
January 20233
Richmond, VA (2)
89,000 $5,350 $2,548 
April 20231Phoenix, AZ107,000 4,900 511 
June 20231Vernon Hills, IL100,000 2,825 (2,816)
September 20231Windsor Mill, MD80,000 10,500 244 
October 20231Santa Clara, CA66,000 16,049 705 
November 20231Chelmsford, MA111,000 5,250 2,588 
8properties553,000 $44,874 $3,780 
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Properties were classified as held for sale as of December 31, 2022.
Schedule of Joint Ventures
As of December 31, 2024 and 2023, our investments in our unconsolidated joint ventures consisted of the following:
OPI OwnershipOPI Carrying Value of Investments at December 31, Number of PropertiesLocationRentable Square Feet
Joint Venture20242023
Prosperity Metro Plaza51%$17,370 $18,128 2Fairfax, VA346,000
1750 H Street, NW50%— — 1Washington, D.C.125,000
Total $17,370 $18,128 3471,000
The following table provides a summary of the mortgage debt of our unconsolidated joint ventures as of December 31, 2024 and 2023:
Principal Balance at December 31,
Joint Venture
 Interest Rate (1)
Maturity Date
2024 (2)
2023 (2)
Prosperity Metro Plaza4.09%12/1/2029$50,000 $50,000 
1750 H Street, NW3.69%8/1/2027— 32,000 
Weighted Average / Total3.93%$50,000 $82,000 
(1)Includes the effect of mark to market purchase accounting.
(2)Reflects the entire balance of the debt secured by the properties and is not adjusted to reflect the interests in the joint ventures we did not own. None of the debt is recourse to us.