Released by: Clerk-Recorder-Assessor Department
For Immediate Release

Sonoma County Property Tax Assessment Roll Moderately Increases to $88.98 Billion

Santa Rosa, CA  –  August 9, 2018  –  After the loss of approximately $1.8 billion in assessed value due to the October 2017 Wildfires and the devastating loss of over 5300 properties, Sonoma County’s net property tax assessment roll is now at $88,980,645,021. The increase of 4.02% is less than last year’s roll percentage increase and indicates a downward trend in property tax revenue growth.

“The combination of a strong real estate market (that included a post fire increase in home values), the annual consumer price index increase, and the continued restoration of assessments that were temporarily reduced during the real estate Great Recession, which led to the 4.02% increase,” stated Clerk-Recorder-Assessor, William F. Rousseau.

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 adding the fire-affected properties as well. At the height of the real estate recession, more than 62,000 property values, approximately half of the residential properties in Sonoma County, were temporarily reduced under these provisions of the laws. For the 2018-2019 assessment roll, only 7, 926 property assessments remain in the decline status.

County Clerk-Recorder-Assessor Rousseau 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 2018-2019 assessed values and value notices are now available on the assessor’s website: 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

Assessor Division


County of Sonoma

Contact us by Phone

Assessor's Office

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