Construction has officially started for the 11-story infill at 300 De Haro Street at the bottom of Potrero Hill in San Francisco. The groundbreaking ceremony was held yesterday morning with State Senator Scott Weiner, the project team, and community members in attendance. Once complete, the triangular development will add over four hundred units of affordable housing overlooking 16th and De Haro Street. DM Development and MRK Partners are jointly responsible for the project.

The plans are notable as the largest affordable housing development to break ground in San Francisco in five years. The complex will provide housing for residents earning between 30% to 70% of the area’s median income.

The roughly 120-foot-tall structure is expected to yield around 189,980 square feet, including 425 studio apartments and roughly 6,000 square feet of ground-floor retail. Each unit will be set with a private bathroom and kitchenette. Landscaping improvements will include a patio extension from the sidewalk along De Haro Street, a second-floor courtyard, and a rooftop deck. Residential amenities will include lounges on the 2nd and 11th floors, on-site laundry, a fitness center, and a second-floor community kitchen.

BAR Architects & Interiors is responsible for the design. Updated renderings show the facade will be clad with an undulated mix of metal panels, a shift away from brick veneer cladding from previous plans.

The 0.62-acre parcel is a triangular corner lot bound by De Haro Street and 16th Street. The property is close to the recently expanded California College of the Arts campus, with several shops and a grocery store in the area.

Demolition work started last month, clearing the former single-story commercial building. Thompson Builders is the general contractor, looking to complete the building as early as Summer 2027.