San Francisco DBI issued backyard ADU permit after 401 days | The Locally Times
Published · The Locally Times
The Department of Building Inspection issued permit 202508143060-0 on October 14, 2026, 401 calendar days after the application was filed.
San Francisco's Department of Building Inspection issued a permit on October 14, 2026, for a detached backyard accessory dwelling unit at 143 Chilton Avenue, 401 calendar days after the application was filed on September 9, 2025. The permit record lists 273 business days to issuance and identifies the review channel as In-House. ## What the record shows The approved scope covers a detached new-construction local ADU of 252 square feet with a 70-square-foot attic and a 39-square-foot garage storage closet, plus a 92-square-foot deck in the rear yard of the main house. The scope also authorizes removal of an existing playhouse and pergola/patio, and notes a separate permit for a new pool. The property is identified in the record as block 6758, lot 022, with permit type 3 and status issued. ## What remains unclear The figures come from the city's Building Permit Application Issuance Metrics dataset on the SF Data portal, with data as of October 16, 2026.