This Is Not a Government Office or Records Custodian. We operate a private reference site. We cannot pull records, certify copies, confirm who lives at an address, or remove anyone from a roll or database. Those requests go to the office that holds the record. For emergencies, dial 911. If you believe you are being stalked or harassed, contact local police.
Need a Specific San Mateo Record?
The quickest starting point depends on the record question in San Mateo County:
- Who owns or is listed along a street: use the San Mateo street directory for the address-keyed chain
- Old directory volumes and past households: use the San Mateo city directory collections
- Finding or verifying one person: use the San Mateo resident lookup workflow
- The offices behind the rolls: see the San Mateo resident records offices
- A record that is not online: request an existing record under the California Public Records Act from its custodian
San Mateo County public-records contact: The Assessor-County Clerk-Recorder & Elections office is the main local routing desk. ACRE is at 555 County Center, Redwood City, with the Recorder on the first floor and the Assessor on the third. Public hours are Monday through Friday, 8 a.m. to 5 p.m.; marriage-license service ends at 4:30 p.m. Call 650-363-4500 for Assessor or Recorder questions, 650-599-1713 for appointments, or 650-312-5222 for Elections. Email assessor@smcacre.gov, recorder@smcacre.gov, countyclerk@smcacre.gov, or registrar@smcacre.gov as appropriate. For unincorporated planning records, County Planning accepts a Public Records Act request by email, mail, or at its Permit Counter.