Understanding Property Taxes in Contra Costa County, California

How Contra Costa County Property Taxes Are Calculated

Property taxes in Contra Costa County are calculated using the following formula:

(Assessed Value - Exemptions) × Tax Rate = Annual Property Tax

For example, if your home is assessed at $550,000 and you have no exemptions, your annual property tax would be:

$550,000 × 0.85% = $4,675

Assessment Process in Contra Costa County

In Contra Costa County, properties are assessed at 100% of their market value. The assessment is conducted by the county assessor's office.

Contra Costa County is east of San Francisco Bay. More affordable than coastal counties.

How to Pay Property Taxes in Contra Costa County

Property taxes in Contra Costa County are typically paid annually or semi-annually. Payment options include:

• Online payment through the county website
• Mail a check to the county treasurer
• In-person payment at the county office
• Through your mortgage escrow account

How to Appeal Your Assessment in Contra Costa County

If you believe your property assessment is too high, you have the right to appeal. The process typically involves:

1. Filing an appeal with the county board of review
2. Providing evidence of comparable property values
3. Attending a hearing (optional but recommended)

Appeals must be filed within 30-60 days of receiving your assessment notice. Check with Contra Costa County Assessor's Office for specific deadlines.