Data sources

What is the CA DWR Assessor Parcel layer?

The California Department of Water Resources publishes a statewide assessor parcel lightbox used for boundary context. Parcel View uses it for parcel polygons and APN attributes in screening.

Updated 2026-08-29

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Useful sources for searching: Official sources to verify buildability ↓

What it is good for

Statewide APN lookup and parcel shape context across counties.

What it is not

Not a survey. County assessor maps and recorded documents remain essential.

People also ask

Who maintains it?

California DWR publishes the service; underlying parcels originate from county assessor data.

Official sources

Last verified 2026-08-29. Re-check agency maps before decisions — vintages change.

Related

Parcel All resources

Screen this on a California parcel

Parcel View checks official public GIS for zoning, flood, fire, soils, and planning — every finding linked to the source.

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