Simi Valley, Ventura County, California Property Taxes
Property Taxes in Simi Valley, California
Median Simi Valley, California effective property tax rate: 1.21%, significantly higher than the national median of 1.02%, and equal to the California state median of 1.21%.
Median Simi Valley, California home value: $526,558
Median annual Simi Valley, California tax bill: $6,288, $3,888 higher than the national median property tax bill of $2,400.
How are property taxes in Ventura calculated?
Property taxes in Simi 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 Simi Valley's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Simi Valley, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Simi Valley, Ventura County, California Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.21%
Estimate Property Tax Bill
$6,371
$5,912
How Does the Simi Valley Property Tax Calculator Work?
Use this Simi Valley property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Simi Valley's median effective tax rate of 1.21% — based on actual property records in Ventura County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Simi 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 Simi Valley: rates range from $540.00 in 91311 to $6,643.00 in 93065, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Simi Valley.
About Simi Valley Property Taxes
About Property Taxes in Simi Valley, Ventura, California
Simi Valley’s median effective property tax rate of 1.21% is higher than the California state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Ventura 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 Simi Valley. Homeowners in the 93063 ZIP code carry a median effective rate of 1.22%, while those in 91304 pay 1.12%. This spread — 0.10 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Ventura County. Understanding which part of Simi Valley you live in can make a meaningful difference to your annual tax bill.
Simi Valley homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the November 30, 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 Simi Valley, Ventura 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 Simi Valley's effective property tax rate to other cities in California and the median property tax rates in California and the U.S.
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 Simi Valley Tax Rate
1.21%
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 Ventura County Tax Rate
1.15%
Median Effective California Tax Rate
1.21%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Simi Valley, Ventura County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 91304 | 1.10% | 1.11% | 1.12% | 1.16% | 1.17% |
| 91311 | 1.09% | 1.11% | 1.16% | 1.21% | 1.25% |
| 93063 | 1.12% | 1.18% | 1.22% | 1.30% | 1.44% |
| 93065 | 1.13% | 1.17% | 1.21% | 1.28% | 1.41% |
| 91363 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Simi Valley, Ventura County, California
When examining property taxes in Simi 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. The Ventura County assessor 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 Ventura County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of July.
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 Simi Valley.
For example, the median home price in Simi Valley is $526,558, with tax bills ranging significantly across the county. 93065 has the highest median home price at $558,840.
Property Tax Assessment Values Across Simi Valley, Ventura County, California
Source: Ownwell
$46,419
$922,777
$1,799,134
Median Simi Valley Market Value
$526,558
Median Ventura County Market Value
$506,609
Median California Market Value
$427,605
Median United States Market Value
$235,294
Property Tax Assessment Values Across Simi Valley, Ventura County, California
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 91304 | $45,402 | $51,319 | $104,991 | $164,258 | $209,874 |
| 91311 | $18,640 | $21,930 | $46,419 | $166,091 | $180,453 |
| 93063 | $160,918 | $300,579 | $481,546 | $691,061 | $869,040 |
| 93065 | $209,207 | $342,588 | $558,840 | $768,526 | $985,471 |
| 91363 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Simi Valley, Ventura County, California
Property tax bills in Simi Valley are based on the assessed value of a home, which is tied to its market value and local tax rates. For a home with a median price of $526,558, the amount owed can vary widely depending on the property’s assessed value and the specific tax rate applied in Ventura County.
The tax bill is determined by multiplying the assessed value by the property tax rate, then adjusting for any local levies or voter-approved charges. That means two homes in the same city can have very different bills if their values differ. In Simi Valley, the 25th percentile tax bill is $4,096, while the 75th percentile is $8,518, and the 90th percentile reaches $10,743.
These costs can have a significant impact on homeowners, especially when bills rise faster than expected. Even within the city, the lowest median tax bill is $540 in ZIP code 91311, while the highest median tax bill is $6,643 in ZIP code 93065.
Median Simi Valley Tax Bill
$6,288
Median Ventura County Tax Bill
$5,829
Median California Tax Bill
$5,134
Median United States Tax Bill
$2,400
Property Tax Bills Across Simi Valley, Ventura County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 91304 | $529 | $593 | $1,177 | $1,818 | $2,312 |
| 91311 | $240 | $285 | $540 | $1,847 | $2,006 |
| 93063 | $2,246 | $3,864 | $5,809 | $8,093 | $10,038 |
| 93065 | $2,794 | $4,309 | $6,643 | $8,881 | $11,381 |
| 91363 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Property Valuation Date | January 1 |
| Appeal Deadline | November 30 |
| Tax Bill | |
| Issued | October 1 |
| Due Date #1 | December 10 |
| Due Date #2 | April 10 |
Links | |
|---|---|
| Ventura Tax Assessor | |
| Website | assessor.countyofventura.org |