Tip: if the property is in an unincorporated area (not inside any city), zoning and permits are handled by the county. Not sure? Check the county assessor's parcel lookup.
Free tool · All of California
Type a city or county to jump straight to its official zoning map, building permit portal, permit records and county assessor. Every link goes to a government website: no ads, no middlemen.
Tip: if the property is in an unincorporated area (not inside any city), zoning and permits are handled by the county. Not sure? Check the county assessor's parcel lookup.
How to use it
Search the city. If the address is unincorporated, use the county instead.
Open the zoning map or search the city's site for zoning. Note the zone code (like R-1 or R-2).
Tap “Search permit records” to see what was permitted at the address. Compare it to the listing: unpermitted rooms, ADUs or garage conversions matter when you buy or sell.
Statewide official tools
Need a hand?
ADU, lot split, addition, or checking for unpermitted work before you buy? Send me the address and I'll pull the zoning and permit history and walk you through what it means for value.
I'm a REALTOR®, not an attorney, architect or engineer. For final answers on what you can build, confirm with the city or county planning counter.
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