Marin County Property Tax Rates by City, Area, and Tax District 2026
Marin County has a high-cost housing market, making property taxes significant in dollar terms even though its 2024 ACS-derived effective property tax rate is about 0.66%. Actual bills vary by assessed value, tax-rate area, exemptions, bonds, and direct charges.
Effective Tax Rate
0.66%
Median Property Tax
$10,001
Tax per $100K
$660
Last Update
August 2026
Marin County Property Tax 2026-27
Marin County Property Tax Rate
Marin County property tax rates vary by district in the provided data. Parcel bills can still include fixed charges, parcel taxes, CFD charges, or special assessments depending on the property.
Base rate
1.0000% general ad valorem tax.
District rates
Marin County district rates vary from 1.0000% to 1.4835% in the provided data.
Direct charges
Special assessments and parcel charges are added separately.
Area
Representative Rate
Belvedere District
1.0970%
Corte Madera District
1.1150%
Countywide-Unitary Base Rate
1.0000%
Fairfax District
1.2210%
Larkspur District
1.1150%
Mill Valley District
1.1340%
Novato District
1.1460%
Ross District
1.1090%
San Anselmo District
1.1850%
San Rafael District
1.1210%
Sausalito District
1.1080%
State Unitary Utility Allocation
1.1825%
Tiburon District
1.0970%
Unincorporated Area Baseline
1.0000%
Other Marin County Property Tools
Property tax research is easier when you can connect the tax rate with the specific parcel, location, assessed value, and surrounding land-use information. California Property Checker provides related tools to help users investigate these details from several angles.
Marin County Property Search
Search property information by owner name, address, parcel number, city, ZIP code, and other available property filters.
Marin Property Tax Calculator
Estimate annual property taxes by entering a property value and applying relevant tax-rate information to your calculation.
Marin Doc Stamp Calculator
Estimate applicable documentary transfer tax or related document charges associated with qualifying real estate transactions.
Marin County Zoning and Maps
Explore property locations, parcel boundaries, zoning information, maps, and other geographic details useful for property research.
How Property Tax Rates Are Applied in Marin County
For a typical secured property, the county determines the assessed value, applies the tax rate associated with the property’s tax-rate area, and adds applicable direct charges and special assessments. California’s Proposition 13 framework generally limits the basic property tax rate to 1% of assessed value, with additional voter-approved bonded indebtedness and other authorized charges potentially appearing on the bill.
Assessed Value Sets the Base
The Assessor establishes the taxable assessment used to calculate the ad valorem portion of the bill. Under California’s Proposition 13 system, a property’s assessed value is generally established when purchased or newly constructed and may increase annually within statutory limits.
Tax Rate Applies to Value
The applicable tax rate is multiplied by the property’s net taxable value. Marin County’s tax bill explains this calculation using net taxable value and the tax rate, followed by the addition of direct charges and special assessments.
Tax Rate Areas Matter
Each parcel is assigned to a tax-rate area based on its location and the taxing agencies that serve it. That area determines which local rates, bonds, and other voter-approved levies can appear on the property’s bill.
Direct Charges Add to Taxes
Not every amount on a property tax bill is a percentage of assessed value. Special assessments and direct charges may be imposed for particular services, facilities, districts, or other authorized purposes and can increase the total amount due.
Ownership Changes Can Trigger Reassessment
A change in ownership can lead to a new assessment under California law, potentially changing the property’s future tax obligation. Marin County also issues supplemental bills when qualifying ownership changes or completed new construction create a supplemental assessment.
Annual Bills Follow a Schedule
Annual secured property tax bills are generally mailed in October. The first installment is due November 1 and becomes delinquent after December 10, while the second is due February 1 and becomes delinquent after April 10.
Why Marin County Has Different Tax Districts and Local Rates
The county contains cities, towns, unincorporated communities, school districts, special districts, and other local jurisdictions. Because these agencies serve different geographic areas and may have separate voter-approved charges, two nearby parcels can have different total property tax obligations.
- Local districts fund services and facilities that are provided within particular geographic boundaries.
- School districts and community college districts can contribute different voter-approved charges to individual property bills.
- Tax-rate areas combine the applicable taxing agencies associated with a particular parcel location.
- Neighboring properties can have different total rates because they may fall within different district boundaries.
- Voter-approved bonds and special taxes can add charges beyond California's basic property tax rate.
- The parcel's precise location determines which taxing jurisdictions and authorized charges apply to the property.
Check Property Tax Rates in Nearby California Counties
Comparing property taxes across neighboring counties can help buyers, homeowners, investors, and researchers understand how local tax structures differ. California Property Checker provides county-specific property information for broader property research and comparison.
Frequently Asked Questions
What happens to property taxes when I buy a home in Marin County?
A purchase can trigger a reassessment based on the property’s new taxable value under California law. The resulting assessment may differ substantially from the seller’s existing assessed value, so a buyer should not assume the seller’s tax bill will remain applicable.
Can a new construction project increase my property taxes?
Yes. Completed new construction can create a supplemental assessment in addition to the regular annual assessment. The supplemental amount reflects the change in assessed value attributable to the qualifying construction and is generally prorated for the applicable fiscal-year period.
What is a supplemental property tax bill?
A supplemental bill covers a reassessment caused by a qualifying change in ownership or completed new construction. It is separate from the regular annual secured property tax bill and can arrive after the event that caused the reassessment.
How can I check whether my property assessment is correct?
Review the assessment information associated with your parcel and compare it with relevant property details and applicable California assessment rules. If you believe the assessed value is incorrect, Marin County provides an assessment appeal process with specific filing periods.
When should Marin County property owners pay their tax bills?
Annual secured property taxes are generally paid in two installments. The first is due November 1 and becomes delinquent after December 10; the second is due February 1 and becomes delinquent after April 10, subject to statutory deadline adjustments.
What happens when property taxes become delinquent?
Late secured installments generally receive a 10% penalty. If taxes remain unpaid through June 30, the property can become tax-defaulted, with additional penalties and costs accruing under California law.
Does the Homeowners' Exemption reduce property taxes in Marin County?
Eligible homeowners may qualify for California’s Homeowners’ Exemption, which can reduce assessed value by up to $7,000 for a qualifying principal residence. Eligibility and filing requirements apply, so homeowners should verify their situation with the County Assessor.
Can property improvements affect my assessed value?
Certain improvements can affect the property’s assessment, particularly when they constitute new construction under California property-tax rules. The treatment depends on the type and scope of the work rather than simply the fact that a property has been renovated.
Why might my property tax bill differ from an online estimate?
Online estimates generally use a countywide effective rate or other benchmark rather than the exact tax-rate area for a specific parcel. Your actual bill may also reflect assessed value, exemptions, bonds, special assessments, direct charges, and other applicable levies.
Where can I verify my actual Marin County property tax bill?
For an exact bill, parcel-specific assessment, payment status, or official tax information, use the appropriate Marin County Assessor and Tax Collector resources. California Property Checker can also help with broader property research, but it is a private information platform and not a government agency.