Long-Stalled 15-Story High-Rise at Fourth and Harrison Advances In SF’s SoMa
BXP, formerly Boston Properties, received an 18-month extension for its $1B office development at 725 Harrison Street in San Francisco. The project, initially announced in 2015, includes 770,000 sq ft of office space and 36,000 sq ft of retail. BXP needs a major tenant to secure financing, citing high construction costs and interest rates. The company points to a surge in office leasing, particularly from AI companies, as a positive sign.
How this was made

The 30-second read
Why it matters
The extension may modestly support BXP's stock by reducing near‑term execution risk, but financing remains contingent on tenant commitment.
Market read
A modest, project‑specific update with limited immediate trading impact; primarily of interest to REIT and office‑market analysts.
What to watch
Rising construction costs and high interest rates could still impede financing despite the extension.
Background
Boston Properties previously halted the $1 billion development during the pandemic; the new extension revives the plan.
Ticker impact
Boston Properties (BXP) secured an 18‑month entitlement extension for its 725 Harrison Street office project, allowing continued marketing while seeking a tenant.
neutral to slight upside as the development becomes more viable
Extension removes immediate deadline pressure; however, financing still hinges on tenant commitment, limiting immediate price move.
Market effects
May signal renewed confidence in San Francisco office market, especially for AI‑related tenants.
Limited to Bay Area office supply dynamics; unlikely to affect broader markets.
Low
Counterpoint
The extension could mask underlying demand weakness; project may stall if tenant not secured.
Key entities
- CompanyBoston Properties
US‑listed REIT developing the 725 Harrison Street office project.
- Design FirmHOK
Architectural firm providing the project design.


