The total value of assessed real estate in Sonoma County has reached an all-time high of $127 billion.
The total value of assessed real estate in Sonoma County has reached an all-time high of $127 billion, according to the county Clerk-Recorder-Assessor’s Office. It marks a 5.44% increase compared to last year’s assessed value.
The county’s net-assessment roll reflects the value of all real and business property in Sonoma County as of Jan. 1.
The county’s real-estate assessments are how property taxes are determined. Tax revenue generated by the assessment roll provides funds for public K-12 schools, community colleges, and municipal operations by counties and cities. About half of the revenue goes toward public education, county officials said.
The 2025-26 assessed value notices are posted on the Assessor’s website at sonomacounty.ca.gov/assessor.
Property owners who feel their assessed value is higher than the market value as of Jan. 1 can file an Application of Change Assessment with the Clerk of the Board by Nov. 30. The assessor’s office can be reached at 707-565-1888.
