San Mateo County, CA

San Mateo County, CA assessor property search and records

Use this county guide to find official assessor property search resources, recorder and deed links, tax records, GIS parcel maps, permits, and property data insights for San Mateo County, California. Search an address or APN, then jump to official county sources or property tax and value data.

Official sources

San Mateo County assessor, recorder, tax, and parcel map sources

Use this table to find the official county source for assessor property search, recorded documents, property tax, GIS parcel maps, permits, and zoning records.

San Mateo County official assessor, tax, deed, GIS, permit, and land-use sources
Record typeOfficial sourceNotes
Assessed valuesSan Mateo County Assessor Property Searchsmcacre.gov/assessor/property-tax-look
  • Provides access to property tax information and assessor records.
Deeds and recorded documentsSan Mateo County Recorder Document Searchapps.smcacre.org/recorderworks/
  • Search index for recorded documents. Images are not available online for privacy reasons.
Property taxesSan Mateo County Property Tax Look-upcounty-taxes.net/ca-sanmateo/services/property-tax
  • Official portal for viewing and paying secured property taxes.
GIS and parcel mapsSan Mateo County GIS Map Viewergis.smcgov.org/apps2/publicviewer
  • Official GIS portal for parcel maps, zoning, and land use layers.
Permits and building recordsSan Mateo County Online Permit Centeraca-prod.accela.com/smcgov/Welcome.aspx
  • Covers unincorporated San Mateo County areas. Includes building and planning permits from 1990 onwards.
Zoning and land useSan Mateo County Zoning Informationwww.smcgov.org/planning/get-zoning-information
  • Provides instructions and links to the GIS viewer for identifying zoning districts in unincorporated areas.
County data

San Mateo County tax rates and property values

County and city-level rollups from AssessorSearch indexed property data. Use these values as directional context, then verify parcel-specific details with the official county sources above.

Median estimated value$1,612,193

Median estimated market value for properties in this county.

AssessorSearch county data
Median assessed value$797,380

Median assessed value from county assessment records when available.

AssessorSearch county data
Median annual property tax$9,925

Median annual property tax amount from indexed tax records when available.

AssessorSearch county data
Median effective property tax rate0.63%

Median effective property tax rate calculated from annual tax and value fields.

AssessorSearch county data

City property data

Top city rollups for estimated value, assessed value, property tax rate, and tax amount.

San Mateo County city-level property value and tax-rate rollups
CityMedian estimated valueMedian assessed valueMedian effective property tax rateMedian tax amount
San Mateo$1,821,178$801,9500.69%$10,831
Daly City$1,195,309$527,5320.61%$6,630
Redwood City$2,051,982$906,0260.59%$10,759
South San Francisco$1,285,108$608,8390.59%$7,175
Menlo Park$2,897,278$1,366,5690.67%$16,648
San Bruno$1,389,703$525,0000.59%$6,521
Pacifica$1,304,127$608,3930.64%$8,259
San Carlos$2,543,082$1,094,8130.61%$13,573
Foster City$1,831,944$861,9620.64%$9,920
Burlingame$2,956,229$1,222,5770.59%$13,507
FAQ

San Mateo County property records FAQ

Common questions about assessor, deed, tax, GIS, and permit records.

Where can I verify assessed value in San Mateo County?

Use the official San Mateo County Assessor Property Search for assessed values, parcel details, exemptions, and property characteristics when those records are available online.

Where can I look up San Mateo County property tax bills or payments?

Use the official San Mateo County Property Tax Look-up for property tax bills, payment history, due dates, or tax collector records.

Where can I find deeds or recorded documents in San Mateo County?

Use the official San Mateo County Recorder Document Search for deeds, mortgages, liens, plats, and other recorded documents. These records are usually separate from assessor property-value records.

Where can I view parcel maps or GIS data in San Mateo County?

Use the official San Mateo County GIS Map Viewer for parcel maps, map layers, boundaries, and GIS context. GIS maps should be treated as reference tools, not legal surveys.

Can I build a list of San Mateo County property owners?

Use Affix by AssessorSearch for county property owner lists, filters, exports, skip tracing, and outreach workflows.

Related counties

More California property records

Use related county pages when researching nearby property records or comparing official source patterns.