Contra Costa County Treasurer -Tax Collector

Russell Watts

Russell V. Watts

Treasurer-Tax Collector

Belinda Zhu
Assistant Treasurer

Lulis Lopez
Assistant Tax Collector

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Court House with Jail


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Finance Building

625 Court St., Ste 100
Martinez CA 94553
Driving Directions

Mailing Address

P.O. Box 631
Martinez, CA 94553

Walk-in Hours

Monday through Friday
8 a.m. to 5 p.m.

Call Center Hours

(925) 608-9500
Monday through Friday
9 a.m. to 4 p.m.

ADA Coordinator

          (925) 608-9588


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  1. Publication: 2023 Public Internet Auction February 22, 2023

    The tax-defaulted properties listed in the publication link have been approved for sale by the Board of Supervisors. The sale will be conducted on line at Due diligence research is incumbent on the bidder. Publication Link
  2. FY2022-2023 Property Tax Postponement Applications Deadline Feb 10, 2023

    Need assistance with your residential property taxes? The State Controller’s Property Tax Postponement Program may be able to help. To learn more, visit or call (800) 952-5661. Read more...
  3. NEW: E-Check Validation for Online Payments

    E-check payments will now be subject to bank account and routing number validation. If your payment is rejected as invalid, please contact your bank immediately. You must wait 24 hours before trying to pay from same account. Read more...
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