As the Treasurer Tax Collector office follows the health officer order, your options for paying property tax can only be accepted by U.S. postal services, through Treasurer-Tax automated phone system at (925) 957-5280, or online. The office will be closed to the public until further notice. To communicate with us, please use the email address firstname.lastname@example.org. A representative will reply as soon as possible. Property taxes payments can only be accepted by U.S. postal services, through our automated phone system at (925) 957-5280, or here online. If you need a receipt for proof of payment, a copy of your tax bill with the installment’s payment date is available in View Bill under Account Lookup. Thank you for your understanding and cooperation. We wish you and your household peace and protection during this time of uncertainty.