Property tax values available online
The 2020-21 secured property tax values are available on the Sonoma County Assessorís website.
In order to find your property values, you need your assessorís parcel tax number or the property address.
By law, only properties that have an increase in value from the prior tax year must be noticed either by mail or website posting.
To find your annual value notice, go to www.sonomacounty.ca.gov.
Property owners without access to the county website may obtain their assessed values by calling 565-1888 or writing to the Sonoma County Assessorís Office, 585 Fiscal Dr., Room 104, Santa Rosa, CA 95403.
Property tax revenue benefits public schools, community colleges, counties and cities, and funds many public benefits and services. Approximately 50 percent of local property tax revenue goes to public education.
Some properties are still in a reduced assessed value of their Proposition 13 base value. Approximately 5,970 properties are still seeing reductions under Proposition 8, which instructs the Assessor to use the lower of either the current market value or the factored base year value under Proposition 13 when assessing property. Property owners who feel their assessed value is higher than the market value as of Jan. 1, 2020 should file an Application of Change Assessment with the Clerk of the Board by Nov. 30, 2020.
The net assessment roll for 2020-21 for Sonoma County properties is $98,573,706,364 with an increase of 4.67 percent over 2019-20. The assessment roll reflects the value of all real and business property as of Jan. 1, 2020.