Name: San Mateo County Property Records & Parcel Data
Creator: tracts

Question 1

How do I look up who owns a property in San Mateo County?

Accepted Answer

Every San Mateo County parcel record carries the owner name and mailing address from San Mateo County parcel layer. Search the viewer above by owner or address, or pull the full county file to query in bulk.

Question 2

How many parcels are in San Mateo County?

Accepted Answer

233,805 parcels across San Mateo County, drawn from San Mateo County parcel layer. The exact deliverable count for your filters is confirmed on the full extract.

Question 3

Where does San Mateo County parcel and GIS data come from?

Accepted Answer

Directly from San Mateo County parcel layer — the county's public parcel record. Every row carries its source URL and pull date, so the lineage is verifiable, not asserted.

Question 4

Can I download San Mateo County parcel data in bulk or via API?

Accepted Answer

Yes — the full San Mateo County parcel dataset is available as a CSV/JSON bulk file or through the live API (up to 1,000 records per call). The lookup here shows a free sample. Scoring and skip-trace are add-ons in development — request them at tracts.ai.

Question 5

What fields are in San Mateo County parcel data?

Accepted Answer

Owner and mailing address, situs address, APN, land use, year built, assessed/market value and (where the county publishes it) lat/long. Available fields vary by county source.

Question 6

Where can I find San Mateo County property records online?

Accepted Answer

Right here — San Mateo County property records (owner, address, assessor & tax value, land use) are searchable above, sourced directly from San Mateo County parcel layer. The free lookup shows a sample; the full county file is available as a bulk download or via the API.

Question 7

How do I find property tax records for San Mateo County?

Accepted Answer

Every San Mateo County parcel record carries the assessor's market and assessed value and tax year from San Mateo County parcel layer. For the official tax bill the county tax collector is authoritative; tracts provides the underlying assessor values across all parcels, by file or API.

Question 8

Are San Mateo County property records public?

Accepted Answer

Yes — San Mateo County ownership, address and assessor records are public record, sourced here directly from San Mateo County parcel layer with full lineage. What tracts adds is bulk delivery and a standardized schema on the paid file. Scoring and skip-trace are add-ons in development.

APN	Owner	Address	Land use	Year	Assessed value

San Mateo Countyproperty records & parcel data.

Free property records lookup.

Get the full San Mateo County dataset

What's in the dataset.

Same parcels, different buyer.

Common questions about San Mateo County data.