Property Values Top $114 Billion In Marin County As Assessment Roll Grows

MARIN COUNTY, CA — Marin County's total assessed property value climbed to a record $114.1 billion this year, increasing 3.62 percent over last year and adding about $4 billion to the county's tax base, Assessor-Recorder-County Clerk Shelly Scott announced.

The annual assessment roll establishes the taxable value of homes, commercial buildings, businesses, boats, aircraft and other taxable property throughout Marin County. Property taxes generated from those assessments help fund schools, public safety, fire protection, parks, libraries, transportation and other local services.

Although the pace of growth slowed compared with recent years, the county's property market remained steady in 2025, according to Scott. The increase was driven by new construction, property sales and the annual inflation adjustment allowed under Proposition 13.

"The 2026 Assessment Roll reflects a stable Marin County real estate market and continued investment in our communities, even as higher interest rates and affordability challenges influenced market activity," Scott said.

The assessor's office also noted that more than $3.77 billion in assessed property value was exempt from taxation through programs including California's homeowners' exemption, which reduces a qualifying owner-occupied home's assessed value by $7,000, as well as exemptions for eligible disabled veterans and certain nonprofit organizations.

Property owners whose assessments changed for reasons other than the annual inflation adjustment were notified by mail in June, official said.

Changes may result from a property sale, new construction, market value adjustments or other factors, according to the assessor's office.