When are property taxes due in Sonoma County, California?

Sonoma County property taxes are due December 10. A second installment is due April 10. This deadline applies to all counties in California.

What is the penalty for late property tax payment in Sonoma County, California?

The late payment penalty in Sonoma County is 10% + $10 fee.

How do I pay Sonoma County, California property taxes?

You can pay Sonoma County property taxes via Online, mail, in-person.

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Sonoma County Property Tax Due Date

California

(707) 565-2281

2026 Property Tax Due Dates

Official Source

Installment 1

December 10

First installment

Installment 2

April 10

Second installment

Pay Taxes Online →

Penalty: 10% + $10 feeGrace period: None

Payment Methods

Online, Mail, In-Person

Sonoma County Treasurer

Treasurer

Erick Roeser

Phone

(707) 565-2281

Office Address

585 Fiscal Dr, Suite 100
Santa Rosa, CA 95403

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Office Hours

Mon-Fri 9am - 5pm

How to Pay

Online

Pay using credit card or e-check

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By Mail

Mail check payable to Sonoma County Treasurer

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In Person

Visit the Treasurer's office — 585 Fiscal Dr, Suite 100, Santa Rosa CA 95403, Mon-Fri 9am - 5pm

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Other Counties in California

Alameda Alpine Amador Butte Calaveras Colusa Contra Costa Del Norte

View all California counties →

About Sonoma County

Sonoma County ( sə-NOH-mə) is a county located in the U.S. state of California. As of the 2020 United States census, its population was 488,863. Its seat of government and largest city is Santa Rosa.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Sonoma

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Property Tax FAQ Tax Calendar

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We'll email you 14 days before your property taxes are due.

Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.