SoCoData Open Information

This page provides links to several sets of publicly available and useful data maintained by the Sonoma County Auditor-Controller-Treasurer-Tax Collector's office.

Delinquent Property Tax Data

The data linked below indicates parcels that have delinquent property taxes. The delinquent tax amounts shown should not be used as a payoff amount. Please visit our property tax payment website to determine the delinquent amount due.

View defaulted tax data on SoCoData

Stale-Dated Check Data

Please note that checks listed as stale-dated may have been subsequently reissued. A check's presence in this dataset does not guarantee that the funds are still claimable.

View stale-dated checks on SoCoData

Contact Information

Tasha Houweling

Administrative Services Officer II

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
Auditor–Controller Treasurer–Tax Collector Main Office
585 Fiscal Drive
Suite 100
Santa Rosa, CA 95403
38.465764, -122.725126