Property Taxes in Los Osos, California
Median Los Osos, California effective property tax rate: 1.60%, significantly higher than the national median of 1.02%, and higher than the California state median of 1.21%.
Median Los Osos, California home value: $424,770
Median annual Los Osos, California tax bill: $6,981, $4,581 higher than the national median property tax bill of $2,400.
How are property taxes in San Luis Obispo calculated?
Property taxes in Los Osos, 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 Los Osos's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Los Osos, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Los Osos Property Tax Calculator Work?
Use this Los Osos property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Los Osos's median effective tax rate of 1.60% — based on actual property records in San Luis Obispo County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Los Osos'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 Los Osos: rates range from 1.60% in 93402 to 1.60% in 93402, 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 Los Osos.
About Los Osos Property Taxes
About Property Taxes in Los Osos, San Luis Obispo, California
Los Osos’s median effective property tax rate of 1.60% is higher than the California state median of 1.21% and higher than the national median of 1.02%. This rate reflects the San Luis Obispo 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 Los Osos. Homeowners in the 93402 ZIP code carry a median effective rate of 1.60%, while those in the same ZIP also pay 1.60%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across San Luis Obispo County. Understanding which part of Los Osos you live in can make a meaningful difference to your annual tax bill.
Los Osos homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before September 15, 2026.
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 Los Osos, San Luis Obispo 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 Los Osos'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 Los Osos, San Luis Obispo County, California
Source: Ownwell
1.03%
1.32%
1.60%
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 Los Osos Tax Rate
1.60%
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 San Luis Obispo County Tax Rate
1.08%
Median Effective California Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Los Osos, San Luis Obispo County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 93402 | 1.09% | 1.39% | 1.60% | 1.99% | 2.51% |
Source: Ownwell
Property Tax Assessment Values Across Los Osos, San Luis Obispo County, California
When examining property taxes in Los Osos, 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 San Luis Obispo 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 San Luis Obispo County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.
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 Los Osos.
For example, the median home price in Los Osos is $424,770, with tax bills ranging significantly across the county. 93402 has the highest median home price at $424,832.
Property Tax Assessment Values Across Los Osos, San Luis Obispo County, California
Source: Ownwell
$279,528
$569,292
$859,056
Median Los Osos Market Value
$424,770
Median San Luis Obispo County Market Value
$492,000
Median California Market Value
$427,605
Median United States Market Value
$274,101
Property Tax Assessment Values Across Los Osos, San Luis Obispo County, California
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 93402 | $128,191 | $244,268 | $424,832 | $644,118 | $860,475 |
Source: Ownwell
Property Tax Bills Across Los Osos, San Luis Obispo County, California
Property tax bills in Los Osos are calculated by applying the local tax rate to a home’s assessed value, which is based on the property’s market value and any applicable local assessments. For a home with a median home price of $424,770, the resulting tax bill can vary widely depending on the neighborhood and specific parcel details. In this area, the 25th percentile tax bill is $5,040, the 75th percentile is $9,234, and the 90th percentile reaches $11,296.
What determines the final bill is not just the home’s value, but also how the property is classified and what local charges are included. That means two similar homes can receive different bills if their assessed values or tax obligations differ. The median tax bill in ZIP code 93402 is $6,982, which is well above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. For homeowners, this can make annual housing costs significantly higher and increase the importance of understanding how the bill is calculated.
Property Tax Bills Across Los Osos, San Luis Obispo County, California
Source: Ownwell
$2,964
$6,083
$9,201
Median Los Osos Tax Bill
$6,981
Median San Luis Obispo County Tax Bill
$5,465
Median California Tax Bill
$5,134
Median United States Tax Bill
$3,209
Property Tax Bills Across Los Osos, San Luis Obispo County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 93402 | $3,668 | $5,041 | $6,982 | $9,234 | $11,297 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Property Valuation Date | January 1 |
| Appeal Deadline | September 15 |
| Tax Bill | |
| Issued | October 1 |
| Due Date #1 | December 10 |
| Due Date #2 | April 10 |
Links | |
|---|---|
| San Luis Obispo Tax Assessor | |
| Website | propertyinquiryportal.slocounty.ca.gov |