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Parcel
data by danielmatloub · 2 hours ago · 0 reviews
Click anywhere on a map of San Francisco and get the zoning code plus a plain-English explanation of what you can build there.

Look up zoning laws and restrictions for any location in San Francisco. Search an address or click anywhere on the Leaflet map; a PostGIS spatial query finds the zoning district and Claude turns the planning code into a plain-English interpretation of what you can build or do there, with a link to the official San Francisco Planning Code.
Interpretations are cached so repeat lookups return instantly, searches are IP rate-limited (30 free, then $5 for unlimited via Stripe), and the stack is React + Leaflet over FastAPI, with PostgreSQL/PostGIS on Supabase, deployed to Railway and Vercel.