County Clerk-Recorder-Assessor
Deva Marie Proto has been the Clerk-Recorder-Assessor since January 2019. From January 2019 to July 2025, she also served as the Registrar of Voters, which then became its own department. Deva was first elected in the June 2018 election and was re-elected in 2022 and 2026.
During her tenure, Deva has overseen many advancements within the office, including implementing a new recording system, the Voter’s Choice Act (elections), and Proposition 19 requirements (assessor), as well as expanding available public information and online services.
Assessor
The Assessor’s Office is responsible for providing accurate and timely property assessments and for determining eligibility for various property tax exemptions and exclusions.
Clerk-Recorder
The County Clerk's Office issues marriage licenses, filing fictitious business name statements, processing notary bonds, handles environmental documents, and performs civil marriage ceremonies. The County Clerk Division also issues certified copies of marriage, birth and death records on behalf of the County Recorder.
The Recorder's Office maintains various land and finance documents for Sonoma County. Typical land documents include deeds, leases, mining claims, subdivision maps, homestead declarations and records of survey. Typical finance documents include trust deeds, notices of default, reconveyances, and various liens. This division of the Clerk-Recorder-Assessor also collects the Documentary Transfer Tax when real property exchanges hands.
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Sonoma County assessment roll increases to $131.7 billion
Sonoma County Clerk-Recorder-Assessor Deva Marie Proto has delivered the 2026-27 assessment roll to the Sonoma County Auditor-Controller-Treasurer-Tax Collector. The net assessment roll has hit an all-time high of $131,753,999,666, which is an increase of 3.73% over last year’s assessment roll amount and reflects the value of all real and business property as of Jan. 1, 2026.
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