1 permitting authority is cataloged in San Francisco County. PermitProof searches 0 of them automatically against the official source; each of those has its own page, linked below. The other 1 is listed here with what the catalog records for it: the reason no automated search runs, what was found when the source was researched, the official source where one is recorded, and the records-request route where one has been verified.
No separate unincorporated county authority is cataloged for San Francisco County yet; the cities below each file with their own authority.
Where a search cannot establish something, the report says so in that row - it never fills a field in, and it never reports “no permits found” without certified evidence.
The catalog records the source as the Department of Building Inspection's Permit Tracking System, a public, no-login address search on the city's own bespoke system rather than a vendor platform PermitProof's automated search supports. The platform was identified from the landing page only, without a live address search.