Contact Information

Telephone Numbers
  • 925-957-5280    All secured, unsecured, supplemental and redemption taxes
  • 925-957-5290    Tax Compliance Division-delinquent unsecured tax collections
  • 925-957-5280    24-hour automated service for current and prior-year taxes
  • 925-957-5280    County's business license application and renewal process
  • 925-957-2850    Treasurer's investments and unclaimed property of estates
Telephones are answered between 9:00 a.m. -- 4:00 p.m., Monday through Friday


Physical and Mailing Addresses
Physical Address:                             Mailing Address:
Finance Building, Room 100                Tax Collector's Office
625 Court Street                                P.O. Box 631
Martinez, CA  94553                           Martinez, CA 94553-0063

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