Assessor Division

A Note from your County Assessor:

Marc Tonnesen

I, Marc C. Tonnesen, as County Assessor, is primarily responsible for properly determining the taxable value of each property in Solano County. This is to ensure that property owners are paying the correct amount of property taxes.

In an effort to address the recent decline in property values, I have temporarily reduced the assessed value of tens of thousands of properties throughout the County. This is commonly referred to as a “Proposition 8” reduction, which allows the County’s Assessor to make temporary reductions in assessed value when real property suffers a decline in value.

In past years, my office mailed the Proposition 8 notices to taxpayers who received the temporary relief in assessed value. This year, however, in an effort to reduce cost we plan on posting Proposition 8 notices to our website.

Please note: Your assessed value is a matter of public record. No confidential information will be posted.

Please select the link below that best describes your request. 

***As a result of the Solano County Shelter at Home Health Order, the Assessor/Recorder lobby is closed to the public until further notice.  Services are still available online and through the mail.  Staff will assist with questions sent by email and over the phone.

Role of the Solano County Assessor's Division

The Solano County Assessor's Office is a division of the Solano County Assessor/Recorder and is responsible for providing accurate and timely property assessments and for determining eligibility for various property tax exemptions and exclusions.

There are approximately 140,000 parcels of land in Solano County and the Assessor's Office is responsible for determining the assessed value of each parcel for property tax purposes in accordance with California's property tax laws. We currently have a staff of 38 who perform this complex, challenging, and rewarding job.

Attention Solano County Property Taxpayers:

As of July 2012, Assessment Valuation Change Notices (Prop 8 and Prop 13 restored) will no longer be mailed to affected property owners. They will, however, be available through this website. The availability of these notices online is being done as a cost-savings measure. If your property’s assessed value was adjusted due to a Prop 8 review or the restoring of its Prop 13 value, then a notice will be available through our online look-up tool.

*Click Here to search for current assessed property value, and to view and/or print a notice.*
Prop. 8 Assessments
Temporary Decline in Market Value:

Temporary reductions to your property's taxable value on the Assessment Roll can be initiated by either you or the Assessor. Use the links below for additional information and application forms.

Prop 8 information

Assessment Review Request Form (Prop 8 Form)

Information & Pamphlets

Frequently Asked Questions
Decline In Property Value (Prop 8)
Understanding Your Supplemental Tax Bill
Possessory Interests

2020 Business Property Factor Tables

For Viewing PDF Files