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Property and assessment

Assessed values, parcels and assessment appeals.

Property taxation, recorded documents and zoning involve different agencies.

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5 reviewed links · San Mateo

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San Mateo, California

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Parcel maps and property-information resources (opens in a new tab)

County directory for its Property Maps portal and the Treasurer-Tax Collector’s separate property-tax lookup. The map portal provides Assessor and recorded maps, including parcel and subdivision maps.

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

County property lookup — Parcel maps and property-information resources

The Property Maps portal allows you to download Assessor’s maps or Recorded maps such as subdivision maps and parcel maps online for free.

Agent source review: October 15, 2026 · Snapshot a76ea00e485d2028

Assessment appeal — new county portal and Clerk contact (opens in a new tab)

San Mateo County directs appeal information, online applications, status checks, hearing schedules and forms to its new portal.

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San Mateo County · San Mateo — assessment appeals information (opens in a new tab)

Assessment appeals — Assessment appeal — new county portal and Clerk contact

If you have immediate questions, you can still reach the AAB Clerk via email at AAB@smcgov.org or by telephone at (650) 363-4573.

Agent source review: October 15, 2026 · Snapshot d467ff7f874d90a7

Assessment appeal applications, case status and forms (opens in a new tab)

County-referred portal for filing, tracking appeals and obtaining forms.

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San Mateo County · San Mateo — assessment appeals information (opens in a new tab)

Assessment appeals — Assessment appeal applications, case status and forms

new secure online portal where you can find information about the Assessment Appeals process, submit applications online, check the status of your appeal, find hearing schedules and download forms.

Agent source review: October 15, 2026 · Snapshot d467ff7f874d90a7

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