Home and mortgage

Sonoma County, CA Property Tax Calculator

Sonoma County homeowners pay a median $5,695 a year in property tax, 0.70% of a median $815,500 home: the same as California's 0.70% but below the national 0.94%.

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Property tax in Sonoma County by home value, at 0.70%

Home value	A year	A month
$410,000	$2,862	$238
$610,000	$4,258	$355
$820,000	$5,724	$477
$1,220,000	$8,516	$710
$1,630,000	$11,377	$948

Sonoma County against California and the US

	Effective rate	Median tax	Median home value	Median household income
Sonoma County	0.70%	$5,695	$815,500	$104,674
California	0.70%	$5,124	$734,700	$99,122
United States	0.94%	$3,119	$332,700	$80,734

How this calculator works

Median real estate taxes paid ÷ median home value in Sonoma County, from the Census Bureau's American Community Survey 2020–2024 5-year estimates. The calculator starts at the county's median home value and rate.

Questions people ask

What is the property tax rate in Sonoma County?

The effective rate is 0.70%: a median $5,695 a year on a median $815,500 home. That's the 24th highest of the 41 California counties we cover.

How much is property tax on a $400,000 house in Sonoma County?

About $2,792 a year, $233 a month, at the county's effective rate, before any exemption.

How does Sonoma County compare with the rest of California?

Its rate is the same as the state's 0.70%. Across California, covered counties range from 0.61% to 0.88%.

How do I lower my Sonoma County property tax?

Apply for every exemption you qualify for, such as a homestead exemption, and appeal your assessment if it is higher than comparable homes sold nearby; the county assessor explains the deadlines.

Related calculators

Sources

US Census Bureau: American Community Survey 2020–2024 5-year estimates (tables B25077, B25103, B19013, B25064)

Updated Sep 30, 2026 by the RateHerald team. The maths is tested against worked examples; report a problem.