Parcel maps and assessment records — instructions (opens in a new tab)
Read the county’s parcel-map guidance, access options and use restrictions before opening its viewer. Assessment maps are approximate and do not establish legal property boundaries.
Office guide →Source & saved evidence
Alameda County official service / referred provider · Alameda — property query (opens in a new tab)
County property lookup — Parcel maps and assessment records — instructions
Assessor Parcel Maps along with assessment and property related data can be accessed through Assessor Parcel Viewer.
Agent source review: October 15, 2026 · Snapshot 84e002049b84fa75