Sobrato Organization Completed One Harrison Office Renovation
The developer converted the historic San Francisco waterfront site into a fully electrified single-tenant headquarters.
Updated on Oct. 4, 2026 in Commercial
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The Sobrato Organization has finalized a comprehensive renovation of the historic 180,000-square-foot office building at 1 Harrison St. Originally constructed in 1918, the property is now being marketed as a premium, single-tenant headquarters.
Why it matters
This project highlights a strategic shift toward modernizing older waterfront assets to attract a single occupant in the San Francisco office market. The developer identified this site as a rare ownership opportunity, positioning the upgraded property against other local holdings.
The six-floor property spans 180,000 square feet and was acquired for $82.5 million. The site sits as a significant addition to the developer's portfolio alongside other San Francisco assets.
The players
The Sobrato Organization
A Silicon Valley-based developer with extensive holdings in Mission Bay and a history of managing major commercial real estate projects.
Habitat Horticulture
A design firm specializing in the creation of living walls and botanical installations for professional and commercial interior environments.
Gap
A major retail corporation that previously occupied the 1 Harrison St. property as office space for several decades.
The details
The renovation project involved partial demolition of sixth-floor office space to create an outdoor roof deck for occupants. To modernize operations, the company fully electrified the building's HVAC system. The lobby now features a living wall installation designed by Habitat Horticulture, updating the historic interior for current commercial standards.
Timeline
The One Harrison property was originally constructed in 1918.
The Sobrato Organization purchased the property at the start of 2023.
Renovation of the office building was completed in late September 2026.
The Home Front
This project follows a trend of developers upgrading historic urban properties to meet modern energy and amenity standards. It represents a significant investment in San Francisco commercial real estate despite broader shifts in office occupancy demands.
Residents in the surrounding area should anticipate increased activity as the developer seeks a high-profile tenant for this new headquarters. It is worth tracking local commercial occupancy levels to understand the long-term impact on the neighborhood's business environment.
The takeaway
The transformation of this 1918 building highlights how older commercial spaces are being repurposed to serve the needs of modern single-tenant corporate HQs. Local stakeholders should monitor the site for announcements regarding new commercial neighbors and potential impacts on the immediate district.
Further reading
For more updates on regional office developments, visit Commercial.
Source note: This article includes information reported by The San Francisco Standard.
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