San Francisco ADU Permit Fee Calculator
Estimate the San Francisco Department of Building Inspection permit fees for an Accessory Dwelling Unit. Powered by the DBI fee schedule, with each line item linked to the underlying SF Building Code §110 Table 1A-A / 1A-B citation.
Project details
About this calculator
San Francisco DBI permit fees are based on construction valuation (SF Building Code §110): a permit-issuance fee per Table 1A-A, a plan-review fee per Table 1A-B, plus California state pass-through surcharges (SB 1473, Building Standards Commission, and the SMIP seismic fee). This calculator derives the valuation from your square footage using a documented per-sqft basis.
San Francisco ADUs
San Francisco permits ADUs citywide under both the state ministerial program (Gov. Code §66314) and its local program (Planning Code §207(c)(4)), each with different size, setback, and Rent Ordinance trade-offs. Use the A-du test-fit tool to check feasibility for a specific lot.
Estimate only
Figures are best-effort estimates for planning. Additional review fees (Planning, Fire, PUC) and impact fees may apply depending on the project. Confirm final fees with the San Francisco Department of Building Inspection.