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Find county GIS and property maps

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

Before you start

Start with the jurisdiction of the property. County permit offices may serve only unincorporated areas.
Use the official map and confirm project requirements with the planning or building office.

1 guide with reviewed service links · San Francisco

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California58 counties

County directory Reviewed service guides available

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Map source

U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · San Francisco

Assessor-Recorder

Assessor

Assessor's Block MapOfficial 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 checked October 26, 2026

San Francisco County official service / referred provider · San Francisco — property query (opens in a new tab)

Official property-office map referral: Assessor's Block Map

Assessor's Block Map

Saved evidence: a41243c526ea49e2 · Agent source review

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