Property Research
Access assessor maps, recorded maps, GIS viewers, and property records for all 58 California counties.
National tools, codes, and exam links
BLM PLSS, NGS geodetic utilities, NCEES handbooks, California statutes, and more — curated and searchable.
Search by address
Click a county to view resources
California State Plane (CCS83) Zones
Find a county or city
58 counties
CCS83 Zone 1 — 6 counties
CCS83 Zone 2 — 23 counties
- AlpineMarkleevilleZ2
- AmadorJacksonZ2
- ButteOrovilleZ2
- CalaverasSan AndreasZ2
- ColusaColusaZ2
- El DoradoPlacervilleZ2
- GlennWillowsZ2
- LakeLakeportZ2
- LassenSusanvilleZ2
- MendocinoUkiahZ2
- NapaNapaZ2
- NevadaNevada CityZ2
- PlacerAuburnZ2
- PlumasQuincyZ2
- SacramentoSacramentoZ2
- SierraDownievilleZ2
- SolanoFairfieldZ2
- SonomaSanta RosaZ2
- SutterYuba CityZ2
- TehamaRed BluffZ2
- TuolumneSonoraZ2
- YoloWoodlandZ2
- YubaMarysvilleZ2
CCS83 Zone 3 — 9 counties
CCS83 Zone 4 — 10 counties
CCS83 Zone 5 — 7 counties
CCS83 Zone 6 — 3 counties
Property Research Resources
Assessor Maps
Assessor parcel maps show property boundaries, APNs, and lot dimensions. Essential for identifying any parcel.
Recorded Maps
Tract maps, parcel maps, and records of survey filed with the county recorder. Shows subdivision history.
GIS Viewers
Interactive online maps with aerial imagery, parcel boundaries, zoning, flood zones, and more.
Recorder Documents
Deeds, easements, CC&Rs, and other recorded documents. Search by grantor/grantee or document number.
How to Research a Property
Identify the County
Enter a property address above to automatically identify the county and get direct links to research tools. You can also use the map or search by county name.
Find the APN
Use the county assessor or GIS viewer to look up the Assessor Parcel Number (APN) by address. The APN is the key to finding all recorded documents for a property.
Pull Maps & Records
With the APN, access assessor parcel maps, search for recorded tract/parcel maps, records of survey, deeds, and easements through the recorder's office.