Mill Valley, Marin County, California Property Taxes

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Property Taxes in Mill Valley, California

Median Mill Valley, California effective property tax rate: 1.41%, significantly higher than the national median of 1.02%, and higher than the California state median of 1.21%.
Median Mill Valley, California home value: $1,174,845
Median annual Mill Valley, California tax bill: $16,538, $14,138 higher than the national median property tax bill of $2,400.

How are property taxes in Marin calculated?

Property taxes in Mill Valley, California are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding Mill Valley's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Mill Valley, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Mill Valley, Marin County, California Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.41%

Estimate Property Tax Bill

$16,565

$15,372

How Does the Mill Valley Property Tax Calculator Work?

Use this Mill Valley property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Mill Valley's median effective tax rate of 1.41% — based on actual property records in Marin County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Mill Valley's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Mill Valley: rates range from $16,574 in 94941 to $16,574 in 94941, primarily due to differences in school district levies and local assessment districts. Mill Valley's median effective tax rate is higher than the 1.21% state median, and the median tax bill is $14,138 higher than the state median.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Mill Valley.

About Mill Valley Property Taxes

About Property Taxes in Mill Valley, Marin, California

Mill Valley’s median effective property tax rate of 1.41% is higher than the California state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Marin County base levy combined with local school district levies and Mello-Roos Community Facility Districts that vary by subdivision throughout the city.

Property tax rates are not uniform across Mill Valley. Homeowners in the 94941 ZIP code carry a median effective rate of 1.41%, while those in the same ZIP code also pay 1.41%. This reflects how school district boundaries and local assessment districts are drawn across Marin County. Understanding which part of Mill Valley you live in can make a meaningful difference to your annual tax bill.

Mill Valley homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the December 1, 2026 deadline each year.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Mill Valley, Marin County, California

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Mill Valley's effective property tax rate to other cities in California and the median property tax rates in California and the U.S.

Property Tax Rates Across Mill Valley, Marin County, California

Source: Ownwell

1.11%

1.36%

1.61%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Mill Valley Tax Rate

1.41%

Median Effective Marin County Tax Rate

1.39%

Median Effective California Tax Rate

1.21%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Mill Valley, Marin County, California

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
94941	1.20%	1.27%	1.41%	1.67%	2.29%

Source: Ownwell

Property Tax Assessment Values Across Mill Valley, Marin County, California

When examining property taxes in Mill Valley, California, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. Marin County estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In Marin County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Mill Valley.

For example, the median home price in Mill Valley is $1,174,845, with tax bills ranging significantly across the county. 94941 has the highest median home price at $1,177,576.

Property Tax Assessment Values Across Mill Valley, Marin County, California

Source: Ownwell

$430,892

$1,472,162

$2,513,431

Median Mill Valley Market Value

$1,174,845

Median Marin County Market Value

$841,979

Median California Market Value

$427,605

Median United States Market Value

$235,294

Property Tax Assessment Values Across Mill Valley, Marin County, California

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
94941	$255,494	$608,180	$1,177,576	$1,921,034	$2,864,010

Source: Ownwell

Property Tax Bills Across Mill Valley, Marin County, California

Property tax bills in Mill Valley are based on the assessed value of a home, not its market price alone. The county applies the local tax rate to that assessed value to determine the annual bill, and the amount can change when a property is sold, improved, or otherwise reassessed. For homeowners, this means two similar homes can have very different tax bills if their assessed values differ.

In Mill Valley, the median home price is $1,174,845, and the median property tax bill is $16,574. That is well above the national median property tax bill of $2,400 and reflects the area’s high home values. Bills can vary widely across the city, with the 25th percentile at $9,786 and the 75th percentile at $24,918. At the 90th percentile, property tax bills reach $34,862, showing how quickly taxes can climb for higher-value homes.

Property Tax Bills Across Mill Valley, Marin County, California

Source: Ownwell

$5,115

$18,644

$32,173

Median Mill Valley Tax Bill

$16,538

Median Marin County Tax Bill

$11,574

Median California Tax Bill

$5,134

Median United States Tax Bill

$2,400

Property Tax Bills Across Mill Valley, Marin County, California

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
94941	$5,888	$9,819	$16,574	$24,939	$34,881

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Property Valuation Date	January 1
Appeal Deadline	December 1
Tax Bill
Issued	October 1
Due Date #1	December 10
Due Date #2	April 10

Links
Marin Tax Assessor
Website	apps.marincounty.org

Frequently Asked Property Tax Questions in Mill Valley, California

How are property taxes calculated in Mill Valley, California?

Property taxes in Mill Valley, California are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Mill Valley, California?

To appeal your property taxes in Mill Valley, California, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Mill Valley, California?

Common property tax exemptions in Mill Valley, California include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Mill Valley, California?

Property tax deadlines in Mill Valley, California vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Mill Valley, California?

Ownwell provides professional property tax appeal services in Mill Valley, California. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.