Clerk-Recorder-Assessor-Registrar of Voters

Services during Novel Coronavirus Outbreak

The County Clerk-Recorder-Assessor-Registrar of Voters Department is currently open for limited in-person services.

Please email or call the specific division with questions:
Assessor:, or (707) 565-1888
Business/Personal Property Assessments:, or (707) 565-1330
Clerk-Recorder:, or (707) 565-3800
Registrar of Voters:, or (707) 565-6800

All mandatory and essential services are being provided. Most services can be accessed online. Customer service is available via email or phone message.

Here are some of the services being provided:

County Recorder

County Clerk


  • Mail processing and customer service
  • Business Property filings
  • Assessment services
  • Questions regarding property tax payments should be directed to the Tax Collector at

Registrar of Voters

Property Affected by Flood or Fires

Has your property suffered or been destroyed by the Kincade Fire, February Floods, or the 2017 Complex Fires? The Assessor's Office is here to help you during this difficult time.

It is important to know that you have 12 months from the event date to file the Calamity Damage Reassessment form, so you can wait until your insurance agency has inspected your property before filling out the form.

If you will be living somewhere else for an extended period of time, please fill out a Change of Mailing Address Form right away so that we can contact you if needed.


Deva Marie Proto
Deva Marie Proto

I am honored and excited to be serving as your Clerk-Recorder-Assessor and Registrar of Voters. Our office provides so many core vital services to the public and we believe in the importance of doing so fairly, efficiently and with great customer service.

I look forward to building on the successes we have had in the past, while embracing many future improvements.

Deva Marie Proto

Clerk-Recorder-Assessor & Registrar of Voters

On October 30, 2001, Sonoma County merged two previously separate departments, the Clerk-Recorder and the Assessor, into the combined Sonoma County Clerk-Recorder-Assessor-Registrar of Voters Department. This merger is an effort to provide better-integrated, efficient, and public-focused services to you, the Sonoma County taxpayer.


The Assessor’s Office is responsible for providing accurate and timely property assessments and for determining eligibility for various property tax exemptions and exclusions.


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.

Registrar of Voters

The Registrar of Voter's Office registers Sonoma County voters and maintains the County’s voter registration file, conducts federal, state and local elections held in the county, files candidates’ campaign statements, and performs various other duties related to elections.

Contact Information

Deva Marie Proto

County Clerk-Recorder-Assessor-Registrar of Voters

Business Hours
Monday – Tuesday
8:00 AM – 5:00 PM
8:00 AM – 4:00 PM
Thursday – Friday
8:00 AM – 5:00 PM

Document processing and fee transactions end 30 minutes prior to closing

Registrar of Voters Hours

Monday - Friday
Open 8:00 AM – 5:00 PM

Contact us by Phone

County Clerk-Recorder Office

585 Fiscal Drive

Room 103

Santa Rosa, CA 95403
38.4659106, -122.7251807

Assessor's Office

585 Fiscal Drive
Room 104F
Santa Rosa, CA 95403
38.4659106, -122.7251807

Registrar of Voters

435 Fiscal Drive

Santa Rosa, CA 95403
38.4657357, -122.7251823

Office Location Map

Location & Services Flyer

Clerk-Recorder-Assessor-Registrar of Voters

Map Pin Marker

Download a PDF map of our office locations with our hours and the services we offer!

SB 272

Senate Bill 272 requires local agencies publish a list of systems that serve as original sources of data within an agency.

Read more

Important Notice

Important Information 75x40The staff of the Clerk-Recorder-Assessor's Office are forbidden by California legal codes to practice law or provide legal advice; this prohibition includes giving advice about what forms you might need or how you should fill them out.