For Immediate Release

Sonoma County Property Tax Assessment Roll Increases to $94 Billion

Clerk-Recorder-Assessor, Proto, announces the 5.87% increase at Board of Supervisors meeting

Santa Rosa, CA  –  August 21, 2019  –  Sonoma County’s net property tax assessment roll is now at $94,206,358,719.The increase of 5.87% is higher than last year’s roll percentage increase and indicates an upward trend in property tax revenue growth. The assessment roll reflects the total net assessed value of all real and business property in Sonoma County as of January 1, 2019.

The major beneficiaries of property tax revenue are public schools, community colleges, cities and the County. Approximately fifty percent of local property tax revenue generated in Sonoma County goes to fund public education.

“The combination of a strong real estate market (that included a post fire construction build-back), the annual consumer price index increase of 2% , and the continued restoration of assessments that were temporarily reduced during the real estate Great Recession, led to the 5.87% increase,” stated Clerk - Recorder - Assessor, Deva Marie Proto.

As they have in the past few years, some residential property owners will see either an increase in assessed value or a full restoration of their Proposition 13 base year value. Since 2007, the Sonoma County Assessor’s office has been reviewing thousands of properties in response to property owner requests as well as proactively reviewing assessed values county-wide, this year reviewing over 5,200 fire-affected properties as well. For the 2019-2020 assessment roll, only 6,642 property assessments remain in the decline status. Properties that were built back following the fires, still under the same ownership, and the size or utility of the original property did not increase, will retain their Proposition 13 base year value.

County Clerk-Recorder-Assessor Proto commented, “The Assessor’s office is working through unprecedented times due to calamity-related events. We want to ensure that the public has advanced notice of their property taxes, and stand ready to work with property owners to explain the process.”

The 2019-2020 assessed values and value notices are now available on the assessor’s website: This notice serves as the basis for the property tax bill mailed in the fall. Taxpayers are encouraged to call the Assessor’s office at (707) 565-1888 for further information regarding their property assessment.


Contact Information

Chief Deputy Assessor

Clerk-Recorder-Assessor Department
County of Sonoma
Contact us by Phone

Assessor's Office

585 Fiscal Drive
Room 104F
Santa Rosa, CA 95403
38.4659106, -122.7251807