Sunnydale Block 3

San Francisco CA | Under Construction 

This affordable housing—Sunnydale Block 3—is part of a larger HOPE SF redevelopment in southeast San Francisco. The new buildings on these two blocks will serve as a prominent entry point for the renewed neighborhood and will include 170 affordable family homes, management and service offices, a wellness clinic, retail and food service, and an early-childhood-education center.

Sunnydale’s mixed-use master plan will offer approximately 1,770 replacement and added homes; new streets, utilities, and infrastructure; and extensive open green space and neighborhood services and retail. Sunnydale is one of San Francisco’s biggest redevelopment projects, replacing housing that was originally created for WWII workers at the port and then converted to public housing in 1964. One goal of the development is to successfully rehouse people currently living in the neighborhood in new homes of comparable size.

 Block 3A and 3Bs are among the first buildings in the redevelopment. Located in the northeast corner of the neighborhood, they are paired with an upcoming new Community Center at the corner of Sunnydale and Hahn. The two affordable residential buildings are oriented onto a landscaped pedestrian mews that bisects the site and hosts the main residential entries. This public passage also breaks down the scale of the surrounding blocks and creates a direct path to the Community Center for the residents of 290 Malosi Street, affordable housing on Block 6 to the south, which was completed in 2022.

On the eastern side of the site, Block 3A Housing features a service-rich ground floor that includes space intended for a future market hall and grocery—a significant food asset that would benefit this currently under-served area. This building includes a large office suite for Mercy Housing to offer resident services for the larger Sunnydale development. Additional neighborhood-serving resources in this building include a Wellness Center run by the SF Department of Public Health and a Felton Institute early-childhood-education center with a private outdoor courtyard.  

At the western side of the site, Block 3B Housing faces a future park and will include ground-level micro-retail spaces subsidized by the developer to activate the street edge and provide resources and opportunity for local residents

The buildings are designed with four residential bars to bring sunlight into all units, linked by open-air bridges. The second-level podiums are open to the street and sky.

The building steps down on Harmonia toward single-family lots to the south, and the articulated façade further breaks down the visual scale. Residential entries along the pedestrian mews are highlighted by weathering steel, which will acquire a rich, rusted patina.

Project Details

Project Number


1545/1555 Sunnydale Avenue
San Francisco, CA
United States

Under Construction

Number of Units
1 Bedroom
2 Bedroom
3 Bedroom
4 Bedroom

Total 170

Density Ratios
225,160 sf
36,182 sf
Units per Acre

Parking Spots
Parking Type
garage with stackers

Type IA
Type V
5-6 Stories


Related Companies of California
Mercy Housing California
David Baker Architects
Landscape Architect
Interstice Architects
Civil Engineer
KPFF Consulting Engineers