San Francisco Commission debates ADU sizes amidst housing affordability concerns

The San Francisco City Commission meeting on July 4, 2025, focused on the development of accessory dwelling units (ADUs) as part of the city's ongoing efforts to address affordable housing needs. Key discussions revolved around the size and affordability of these units, as well as their compliance with the city's general plan.

Commissioner Reese raised questions about the potential costs associated with the ADUs, emphasizing the importance of understanding how these units align with the city's affordability goals. Staff members explained that the design of the 600 square foot ADUs is intended to be more affordable compared to larger housing options in the area, which typically command higher rents.

Concerns were expressed regarding the size of the ADUs in relation to the main housing units. Some commissioners suggested that increasing the size of the ADUs could enhance their appeal and functionality, while still maintaining affordability. Commissioner Tanner noted the need for balance, advocating for slightly larger ADUs without compromising their affordability.

The discussion also touched on the overall design of the housing project, with some commissioners expressing a desire for a more equitable distribution of unit sizes. Commissioner Imperial proposed increasing the ADU size to 1,000 square feet while reducing the main housing units to 2,000 square feet, reflecting a vision for a multi-unit building that aligns with the city’s housing goals.

The meeting highlighted the ongoing challenges in San Francisco's housing market, particularly the need for affordable options that can accommodate diverse family structures. As the commission continues to deliberate on these issues, the outcome will play a crucial role in shaping the city’s housing landscape and addressing the pressing demand for affordable living spaces.