Contra Costa County, California · Property and assessment

Find county GIS and property maps in Contra Costa County

Browse official GIS tools, assessor map information and county map referrals. Some entries provide instructions or map indexes rather than an interactive GIS viewer.

1 provider · 1 official link · sources checked October 26, 2026

In Contra Costa County, 1 county department publishes 1 official link for this service. 1 provider publishes reviewed fee items and 1 provider lists forms on its guide.

These are the Contra Costa County providers with a reviewed service link for this task. Other offices may also help, and a provider may serve only part of the county: check each service area. Fees and forms stay on each office’s guide, where their sources are cited.

County government

Assessor

Maps & Property InformationOfficial instructions

Officially linked county property-map resource. This verifies the referral and stated label; interactive layers, parcel results, legal boundaries, buildability and application eligibility are not determined here.

Source & saved evidence

Contra Costa County · Contra Costa County — assessor (opens in a new tab)

Official property-office map referral: Maps & Property Information

Maps & Property Information

Agent source review: October 26, 2026 · Snapshot 35328b7978564df7

Phone: 925-313-7400

Contacts & sources · 5 fees published by this office · 1 form

Find county GIS and property maps in Contra Costa County

Assessor

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