San Mateo County, California Property Taxes
Median San Mateo County effective property tax rate: 1.26%, significantly higher than the national median of 1.02%.
Median San Mateo County home value: $685,382
Median annual San Mateo County tax bill: $8,692, $6,292 higher than the national median property tax bill of $2,400.
How are property taxes in San Mateo County calculated?
Property taxes in San Mateo County 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 your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Redwood City or another part of San Mateo County, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
San Mateo County, California Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.26%
Estimate Property Tax Bill
$8,636
$8,014
$1,102
Average Tax Savings
Ownwell’s San Mateo County Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in San Mateo County with just two data points.
By entering your property's estimated assessed value, our calculator applies San Mateo County’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations.
This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in San Mateo County.
For those interested in more localized information, please scroll down to explore city-level trends!
Property Tax Rates Across San Mateo County, California
Local government entities set tax rates, which can vary widely within a state. 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.
In San Mateo County, the effective property tax rate is 1.26%, which is higher than the national median property tax rate of 1.02%. This means property owners in San Mateo County might pay more in property taxes compared to the average U.S. homeowner. Within the county, East Palo Alto has the highest median tax rate at 1.52%, whereas Palomar Park enjoys a lower rate of 1.08%. These variations highlight the importance of understanding local tax rates, as they can significantly impact the financial responsibilities of property owners. By comparing San Mateo County's property tax rate to other counties in California or the U.S. median, property owners can better navigate their tax obligations and potentially identify opportunities for savings.
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 Mateo County Tax Rate
1.26%
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 California Tax Rate
1.21%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across San Mateo County, California
City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Atherton | 1.10% | 1.11% | 1.14% | 1.21% | 1.44% |
Belmont | 1.18% | 1.22% | 1.30% | 1.50% | 2.06% |
Brisbane | 1.13% | 1.15% | 1.17% | 1.20% | 1.29% |
Broadmoor Vlg | N/A | N/A | N/A | N/A | N/A |
Burlingame | 1.14% | 1.14% | 1.16% | 1.21% | 1.35% |
Colma | 1.20% | 1.24% | 1.32% | 1.56% | 1.85% |
Daly City | 1.18% | 1.22% | 1.30% | 1.44% | 1.72% |
East Palo Alto | 1.24% | 1.31% | 1.52% | 1.93% | 3.88% |
El Granada | 1.16% | 1.18% | 1.22% | 1.31% | 1.56% |
Emerald Hills | 1.14% | 1.17% | 1.22% | 1.34% | 1.76% |
Foster City | 1.15% | 1.19% | 1.20% | 1.24% | 1.31% |
Half Moon Bay | 1.16% | 1.19% | 1.24% | 1.37% | 1.69% |
Hillsborough | 1.19% | 1.22% | 1.30% | 1.48% | 2.03% |
La Honda | 1.08% | 1.09% | 1.15% | 1.22% | 1.35% |
Loma Mar | 1.08% | 1.09% | 1.10% | 1.14% | 1.26% |
Menlo Park | 1.15% | 1.19% | 1.27% | 1.49% | 2.08% |
Millbrae | 1.13% | 1.13% | 1.15% | 1.19% | 1.28% |
Montara | 1.27% | 1.34% | 1.47% | 1.74% | 2.35% |
Moss Beach | 1.29% | 1.35% | 1.48% | 1.71% | 2.21% |
Pacifica | 1.22% | 1.27% | 1.38% | 1.66% | 2.34% |
Palo Alto | 1.21% | 1.28% | 1.43% | 1.47% | 1.93% |
Palomar Park | 1.07% | 1.08% | 1.08% | 1.09% | 1.10% |
Pescadero | 1.08% | 1.08% | 1.10% | 1.13% | 1.24% |
Portola Valley | 1.09% | 1.11% | 1.15% | 1.21% | 1.38% |
Princeton | N/A | N/A | N/A | N/A | N/A |
Redwood City | 1.11% | 1.15% | 1.21% | 1.34% | 1.71% |
San Bruno | 1.10% | 1.10% | 1.11% | 1.12% | 1.13% |
San Carlos | 1.17% | 1.21% | 1.28% | 1.44% | 1.97% |
San Francisco | N/A | N/A | N/A | N/A | N/A |
San Gregorio | 1.10% | 1.11% | 1.12% | 1.13% | 1.18% |
San Mateo | 1.25% | 1.30% | 1.42% | 1.67% | 2.23% |
South San Francisco | 1.11% | 1.14% | 1.19% | 1.32% | 1.76% |
Woodside | 1.08% | 1.09% | 1.11% | 1.15% | 1.23% |
Source: Ownwell
$1,102
Average San Mateo County Tax Savings
Save on your property taxes & more with Ownwell
Property Tax Assessment Values Across San Mateo County, California
When examining property taxes in San Mateo County, 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 Mateo County Assessor's Office 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 Mateo 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 San Mateo County.
For example, the median tax bill in San Mateo County is $8,710, with tax bills ranging significantly across the county. Atherton has the highest median home price at $3,584,402.
Property Tax Assessment Values Across San Mateo County, California
Source: Ownwell

$377,686
$1,981,044
$3,584,402
Median San Mateo County Market Value
$685,382
Median California Market Value
$378,421
Median United States Market Value
$235,294
Property Tax Assessment Values Across San Mateo County, California
City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Atherton | $469,793 | $1,448,092 | $3,584,402 | $7,398,750 | $12,647,753 |
Belmont | $168,010 | $441,896 | $885,832 | $1,409,034 | $1,929,962 |
Brisbane | $168,871 | $385,907 | $681,060 | $988,106 | $1,406,274 |
Broadmoor Vlg | N/A | N/A | N/A | N/A | N/A |
Burlingame | $185,183 | $476,466 | $1,017,898 | $1,828,250 | $2,647,732 |
Colma | $85,134 | $220,332 | $481,720 | $815,244 | $1,044,240 |
Daly City | $104,316 | $250,876 | $459,376 | $747,513 | $1,013,296 |
East Palo Alto | $56,876 | $210,914 | $377,686 | $721,187 | $969,000 |
El Granada | $179,439 | $404,318 | $708,214 | $1,066,354 | $1,400,917 |
Emerald Hills | $222,102 | $626,156 | $1,181,150 | $1,948,920 | $2,584,786 |
Foster City | $206,780 | $427,334 | $750,862 | $1,197,584 | $1,640,467 |
Half Moon Bay | $191,153 | $428,682 | $771,902 | $1,183,686 | $1,690,000 |
Hillsborough | $526,493 | $1,343,589 | $2,694,213 | $4,233,000 | $6,037,261 |
La Honda | $139,980 | $287,233 | $500,648 | $779,936 | $1,128,332 |
Loma Mar | $114,525 | $217,230 | $413,552 | $762,884 | $979,494 |
Menlo Park | $198,249 | $507,183 | $1,148,326 | $2,141,793 | $3,445,400 |
Millbrae | $157,665 | $387,096 | $781,811 | $1,289,216 | $1,822,742 |
Montara | $187,929 | $390,658 | $722,356 | $1,088,641 | $1,470,796 |
Moss Beach | $197,229 | $403,320 | $712,292 | $1,061,070 | $1,382,325 |
Pacifica | $99,886 | $252,618 | $517,040 | $841,500 | $1,133,622 |
Palo Alto | $211,952 | $481,146 | $948,186 | $1,076,052 | $1,251,950 |
Palomar Park | $282,350 | $552,561 | $997,162 | $1,737,986 | $2,424,873 |
Pescadero | $73,531 | $216,258 | $502,484 | $1,003,087 | $1,919,132 |
Portola Valley | $300,194 | $916,783 | $1,937,884 | $3,153,904 | $4,699,706 |
Princeton | N/A | N/A | N/A | N/A | N/A |
Redwood City | $169,831 | $397,153 | $774,278 | $1,261,043 | $1,815,853 |
San Bruno | $120,549 | $229,370 | $459,036 | $792,890 | $1,132,538 |
San Carlos | $177,110 | $483,420 | $942,492 | $1,568,565 | $2,200,000 |
San Francisco | N/A | N/A | N/A | N/A | N/A |
San Gregorio | $168,498 | $306,234 | $780,135 | $1,357,892 | $1,986,724 |
San Mateo | $158,414 | $356,901 | $693,132 | $1,173,000 | $1,732,882 |
South San Francisco | $108,694 | $267,140 | $522,016 | $800,380 | $1,076,100 |
Woodside | $343,229 | $961,056 | $2,242,664 | $4,310,190 | $8,171,372 |
Source: Ownwell
$1,102
Average San Mateo County Tax Savings
Save on your property taxes & more with Ownwell
Property Tax Bills Across San Mateo County, California
Median San Mateo County Tax Bill
$8,692
Median California Tax Bill
$4,683
Median United States Tax Bill
$2,400
Property Tax Bills Across San Mateo County, California
City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
Atherton | $6,948 | $17,173 | $41,115 | $82,442 | $138,497 |
Belmont | $3,599 | $6,515 | $11,519 | $17,279 | $22,863 |
Brisbane | $2,135 | $4,644 | $7,941 | $11,323 | $15,999 |
Broadmoor Vlg | N/A | N/A | N/A | N/A | N/A |
Burlingame | $2,516 | $5,730 | $11,875 | $21,056 | $30,178 |
Colma | $1,772 | $3,781 | $6,442 | $10,099 | $12,568 |
Daly City | $1,803 | $3,451 | $5,967 | $9,344 | $12,465 |
East Palo Alto | $2,146 | $3,794 | $5,759 | $9,415 | $12,292 |
El Granada | $2,873 | $5,314 | $8,681 | $12,628 | $16,259 |
Emerald Hills | $3,940 | $8,505 | $14,492 | $22,761 | $29,598 |
Foster City | $2,666 | $5,257 | $9,050 | $14,205 | $19,298 |
Half Moon Bay | $2,224 | $5,135 | $9,131 | $13,826 | $19,472 |
Hillsborough | $10,853 | $19,802 | $34,962 | $51,870 | $71,591 |
La Honda | $1,730 | $3,431 | $5,821 | $8,743 | $12,193 |
Loma Mar | $1,308 | $2,464 | $4,534 | $8,313 | $12,101 |
Menlo Park | $4,209 | $7,583 | $14,755 | $25,858 | $39,835 |
Millbrae | $2,002 | $4,533 | $9,011 | $14,684 | $20,585 |
Montara | $4,459 | $6,708 | $10,630 | $14,872 | $18,928 |
Moss Beach | $186 | $4,975 | $8,998 | $13,967 | $17,906 |
Pacifica | $2,378 | $4,096 | $7,161 | $10,792 | $14,135 |
Palo Alto | $3,705 | $6,017 | $12,887 | $15,267 | $16,950 |
Palomar Park | $3,097 | $5,993 | $10,859 | $18,763 | $26,206 |
Pescadero | $776 | $2,301 | $5,244 | $10,806 | $20,697 |
Portola Valley | $4,045 | $11,168 | $22,472 | $35,728 | $52,525 |
Princeton | N/A | N/A | N/A | N/A | N/A |
Redwood City | $2,693 | $5,138 | $9,340 | $14,632 | $20,655 |
San Bruno | $1,356 | $2,533 | $5,070 | $8,774 | $12,517 |
San Carlos | $3,518 | $6,969 | $12,054 | $18,999 | $26,044 |
San Francisco | N/A | N/A | N/A | N/A | N/A |
San Gregorio | $1,053 | $3,259 | $8,428 | $14,976 | $21,877 |
San Mateo | $3,618 | $5,874 | $9,821 | $15,429 | $22,118 |
South San Francisco | $1,860 | $3,512 | $6,230 | $9,190 | $12,169 |
Woodside | $4,349 | $11,164 | $24,970 | $47,913 | $89,186 |
Source: Ownwell
$1,102
Average San Mateo County Tax Savings
Save on your property taxes & more with Ownwell
Want to lower your San Mateo County property taxes?
Property Tax Appeals in California
In San Mateo County, homeowners who believe their property tax assessments are too high have the option to appeal. The process begins with filing an appeal with the Assessment Appeals Board, the local body responsible for hearing such cases. Homeowners must submit their appeal within the specified period, typically between July 2 and September 15, following the mailing of assessment notices. The appeal must include evidence supporting the claim that the assessed value is higher than the current market value of the property.
Once the appeal is filed, the Assessment Appeals Board reviews the submitted evidence, which may include recent sales of comparable properties, appraisals, or other relevant documentation. Homeowners may also present their case in a hearing where they can further elaborate on their evidence and arguments. The board then evaluates the information and makes a determination on whether to adjust the assessed value.
The potential outcomes of an appeal can vary. If the board agrees that the assessment is too high, they may lower the assessed value, resulting in a reduced property tax bill. However, if the board finds the assessment to be accurate, the value remains unchanged, and the homeowner is responsible for the original tax amount.
Ownwell provides valuable assistance throughout the appeal process. Our team of experts helps homeowners gather necessary evidence, prepare a compelling case, and represent their interests during hearings. With a deep understanding of local property tax regulations and market conditions, Ownwell maximizes the chances of a successful appeal, potentially saving homeowners significant amounts on their property tax bills.
Exemptions in California
San Mateo County offers several property tax exemption programs designed to ease the financial burden on homeowners. One of the most significant exemptions is the Homeowners' Exemption, which applies to primary residences. To qualify, homeowners must occupy the property as their principal place of residence. This exemption reduces the assessed value of the home, resulting in lower property taxes.
Senior citizens, veterans, and disabled individuals may also be eligible for additional exemptions. The Senior Citizens' Exemption offers tax relief for homeowners aged 62 and older, while the Disabled Veterans' Exemption provides benefits to veterans with a service-related disability. These exemptions aim to support those on fixed incomes or with unique financial challenges.
To apply for these exemptions, homeowners must submit the appropriate forms to the San Mateo County Assessor's Office. It's crucial to meet application deadlines and provide necessary documentation to ensure eligibility.
Ownwell can assist homeowners in navigating these exemption programs, ensuring they maximize their tax savings. Our team of experts can help identify applicable exemptions, guide homeowners through the application process, and provide ongoing support to ensure compliance with county regulations. By leveraging Ownwell's services, homeowners can confidently take advantage of San Mateo County's property tax exemptions and reduce their financial obligations.
Available Exemptions
Disabled
Home Stead
Solar/Wind
Non-Profit
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 | |
---|---|
San Mateo Tax Assessor | |
Website | county-taxes.net |
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