1180 Fourth Street marks the corner of 4th and Channel Streets as a gateway to San Francisco’s newest neighborhood, Mission Bay South. This setting carries civic obligations unusual for an affordable housing project; it demands a welcoming, well-made and richly articulated building to set the standard for development to follow on the surrounding blocks. As a community-oriented development for 150 low-income families, this building must hold its own amongst larger, more expensive market-rate neighbors and biotech campuses. The project includes 11,000 sq. ft. of retail space lining the Fourth Street corridor, anchored by a corner restaurant space, and a community building facing Channel Park to serve the greater neighborhood. Common areas include two mid-block courtyards and a rooftop garden; a teen room, exercise room, day care and supportive services. The building is designed to achieve a LEED® for Homes Midrise Platinum rating.