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Organization, Ownership, and Basis of Presentation (Tables)
6 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Real Estate Properties
Our stabilized portfolio of operating properties was comprised of the following properties at June 30, 2025:
Number of
Buildings
Rentable
Square Feet
Number of
Tenants
Percentage 
Occupied (1)
Stabilized Office Properties (2)
118 16,395,491 440 80.8 %
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(1)Represents economic occupancy for space where we have achieved revenue recognition for the associated lease agreements.
(2)Includes stabilized life science and retail space.
Number of
Properties
Number of
Units
2025 Average Occupancy
Stabilized Residential Properties1,001 94.5 %

As of June 30, 2025, the following properties were excluded from our stabilized portfolio:

Number of
Properties / Projects
Actual / Estimated Rentable
Square Feet (1)
Properties held for sale (2)
1663,460
In-process development projects - tenant improvement1875,000
In-process redevelopment projects - tenant improvement2100,000
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(1)For the property classified as held for sale, represents actual rentable square feet and consists of four buildings. For the in-process development and redevelopment projects in the tenant improvement phase, represents estimated rentable square feet upon completion.
(2)See Note 2 “Dispositions and Real Estate Held for Sale” for additional information.
Schedule of Consolidated Property Partnership Ownership Percentage
Consolidated Property PartnershipProperty Address
Ownership Interest (1)
100 First Street Member, LLC100 1st Street, San Francisco, CA 9410556%
303 Second Street Member, LLC303 2nd Street, San Francisco, CA 9410756%
Redwood City Partners, LLC900 Jefferson Avenue, Redwood City, CA 9406393%
900 Middlefield Road, Redwood City, CA 94063
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(1)The remaining interests in all three property partnerships were owned by unrelated third parties.