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Clerk-Recorder-Assessor-Registrar of Voters

For Immediate Release

Sonoma County achieves record-high net assessment roll of more than $120 billion

Santa Rosa, CA | June 28, 2024

En español »

Sonoma County Clerk-Recorder-Assessor Deva Marie Proto announced today that the county's net assessment roll has reached an unprecedented high of $120,459,402,383. This marks a 5.22 percent increase compared to last year’s assessment roll, reflecting the value of all real and business property as of Jan. 1. The 2024-25 assessment roll has been officially delivered to the Sonoma County Auditor-Controller-Treasurer-Tax Collector.

Property tax revenue generated by the assessment roll funds are vital to institutions, such as public schools, community colleges, counties, cities, as well as public benefits and services. Approximately 50 percent of local property tax revenue goes toward public education.

The 5.22 percent increase to the assessment roll can be attributed to Sonoma County’s very strong residential market combined with the 2 percent increase to the Consumer Price Index. 

Property owners who feel their assessed value is higher than the market value as of Jan. 1 are encouraged to file an Application of Change Assessment with the Clerk of the Board by Nov. 30.

The Assessor’s office has continued to make progress on addressing assessment backlogs due to multiple wildfires, pandemic, and the implementation of Proposition 19. Approximately 3 percent of the 5.22 percent increase is attributable to a combination of supplemental assessments and roll corrections of backlogged work.

The 2024-25 assessed value notices are posted on the Assessor’s website at For any questions regarding property tax assessments, please contact the Assessor’s office at (707) 565-1888.

Contact Information:

Rhiannon Yeager
Chief Deputy Assessor

Media Contact:

Gina Stocker, Communications Specialist
575 Administration Drive, Suite 104A
Santa Rosa, CA 95403