The specs for Block 4 East:
- 23 floors, 242 ft + 16 floors, 176 ft
- 398 units (105 1BR, 190 2BR, 96 3BR, 7 4BR)
- 100% of the units will be affordable (30-95% of the area’s median income); 20% of the units will be designated for formerly unhoused families
- 1,280 sq ft for ground level retail
- Parking for 78 cars and 256 bicycles
The site:
https://maps.app.goo.gl/meHTePVCCWWaYtWdA
Quote:
Renderings Revealed For 23-Story Affordable Housing in Mission Bay, San Francisco

By: Andrew Nelson 5:30 am on June 26, 2025
Initial renderings have been revealed for a dense residential project at Mission Bay Block 4 East in the Mission Bay neighborhood of San Francisco. The proposal will create four hundred affordable apartments across two structures, rising 16 stories and 23 stories respectively across two phases. Curtis Development and Bayview Senior Services are the joint developers.
...
Perry Architects and Y.A. Studio are jointly responsible for the design. The new illustrations show that both structures will rise from a similar three-story podium and join along Third Street with third-floor courtyards and ten-story courtyard-capped extensions. The façade scheme will emphasize the verticality of the 23-story tower, in part, by camouflaging the ten-story extension of the North Tower to match the design of the South Tower. The exterior will be clad with a mix of precast concrete, metal mullions, and perforated metal screens.
The one-acre property is located at 3rd Street between Mission Rock Street and China Basin Street. Future residents will live along the Third Street light rail and the Mission Rock master plan site.
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https://sfyimby.com/2025/06/renderings-r...ousing-in-mission-bay-san-francisco.html