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Contra Costa County, CA Property Tax Calculator

Contra Costa County homeowners pay a median $7,156 a year in property tax, 0.83% of a median $866,800 home: above California's 0.70% but below the national 0.94%.

At an effective rate of 0.83%, a $866,800 home pays about $7,160 a year in property tax, $597 a month.

Property tax a year
$7,160
A month (for escrow)
$597
Effective rate on the home
0.83%

Property tax in Contra Costa County by home value, at 0.83%

Home valueA yearA month
$200,000$1,652$138
$300,000$2,478$207
$400,000$3,304$275
$500,000$4,130$344
$750,000$6,195$516
$1,000,000$8,260$688

Contra Costa County against California and the US

Effective rateMedian taxMedian home valueMedian household income
Contra Costa County0.83%$7,156$866,800$127,229
California0.70%$5,124$734,700$99,122
United States0.94%$3,119$332,700$80,734

How this calculator works

Median real estate taxes paid ÷ median home value in Contra Costa 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.

What it assumes

  • Cities, school districts and special districts within the county levy different rates, so bills vary within it.
  • Survey figures cover 2020 to 2024 and lag recent reassessments.

Questions people ask

What is the property tax rate in Contra Costa County?

The effective rate is 0.83%: a median $7,156 a year on a median $866,800 home. That's the 3rd highest of the 41 California counties we cover.

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

About $3,304 a year, $275 a month, at the county's effective rate, before any exemption.

How does Contra Costa County compare with the rest of California?

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

How do I lower my Contra Costa 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.

Other California counties

Related calculators

  • California Property Tax CalculatorCalifornia homeowners pay a median $5,124 a year in property tax, 0.70% of a median $734,700 home: the 35th highest effective rate of the 50 states and DC.
  • California Mortgage CalculatorYour monthly mortgage payment in California, with California's effective property tax rate (0.70%) built in, at this week's average rate. The calculator starts at the state's median home value, $734,700.
  • Home Affordability CalculatorThe home price your income supports under the 28/36 guideline lenders use, counting your other debts, down payment, taxes and insurance, at this week's average rate.

Sources

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