Useful sources for searching: Official sources to verify buildability ↓
Digital first look
Assessor maps, county GIS, and tools like Parcel View show APN polygons for screening.
When to survey
Fence disputes, tight setbacks, new construction, and ALTA needs require a licensed land surveyor.
Why lines disagree
Different vendors simplify or age their cadastre. Legal descriptions and surveys control over consumer map apps.
People also ask
Are Zillow lot lines official?
No. They are a commercial visualization. Rely on assessor/survey records for decisions.
Does Parcel View replace a survey?
No. It uses public GIS for screening and always points you back to official sources.
Official sources
Last verified 2026-08-29. Re-check agency maps before decisions — vintages change.
Related
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.