Alameda County, California Property Taxes
Property Taxes in Alameda County, California
Median Alameda County effective property tax rate: 1.42%, significantly higher than the national median of 1.02%.
Median Alameda County home value: $564,082
Median annual Alameda County tax bill: $8,209, higher than the national median property tax bill of $2,400.
How are property taxes in Alameda County calculated?
Property taxes in Alameda 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 Alameda County's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Alameda or another part of Alameda County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Alameda County, California Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.42%
Estimate Property Tax Bill
$8,010
$7,433
$774
Average Annual Tax Savings
How Does the Alameda County Property Tax Calculator Work?
Use this Alameda County property tax calculator to estimate your annual tax bill. Enter your property's assessed value and our calculator applies Alameda County's median effective tax rate of 1.42% — drawn from real transactions across the county — to generate your estimate.
Enter your property's estimated assessed value — the value the appraisal district assigns to your property, typically lower than market value after exemptions. Our calculator uses the median effective rate (actual bills divided by market value), which accounts for typical exemptions and is more accurate than applying the statutory millage rate directly.
Note: your assessed value reflects any exemptions you currently have. Rates vary across Alameda County — scroll down to explore city-level trends and find the rate specific to your area.
Alameda County's median tax rate is higher than California's 1.21% median, and the median tax bill is $8,209, which is $5,809 higher than the state median. If your estimate is higher than expected, Ownwell can protest your Alameda County assessment.
Property Tax Rates Across Alameda County, California
What Are Effective Property Tax Rates Across Alameda County?
Local government entities set tax rates, which vary widely across Alameda County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Alameda County's effective property tax rate to other counties in California or the U.S. median of 1.02%.
Alameda County's median effective rate stands at 1.42%, which is higher than the national median of 1.02%. Within Alameda County, the highest rate is found in Albany at 1.91%, while Tracy has the lowest at 1.12%.
These variations reflect differences in local school district levies, Mello-Roos Community Facility Districts assessments, and special district bonds — which compound the base county rate.
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 Alameda County Tax Rate
1.42%
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 Alameda County, California
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alameda | 1.38% | 1.44% | 1.55% | 1.80% | 2.42% |
| Albany | 1.61% | 1.72% | 1.91% | 2.40% | 3.85% |
| Ashland | 1.30% | 1.35% | 1.46% | 1.63% | 2.25% |
| Berkeley | 1.43% | 1.52% | 1.78% | 2.49% | 4.82% |
| Castro Valley | 1.25% | 1.28% | 1.33% | 1.43% | 1.66% |
| Cherryland | 1.30% | 1.34% | 1.45% | 1.65% | 2.00% |
| Dublin | 1.33% | 1.36% | 1.39% | 1.49% | 1.79% |
| Emeryville | 1.28% | 1.34% | 1.50% | 1.77% | 2.67% |
| Fairview | 1.26% | 1.29% | 1.34% | 1.48% | 1.80% |
| Fremont | 1.19% | 1.21% | 1.25% | 1.34% | 1.53% |
| Hayward | 1.23% | 1.25% | 1.30% | 1.37% | 1.57% |
| Hayward Acres | 1.31% | 1.41% | 1.54% | 1.68% | 2.13% |
| Livermore | 1.24% | 1.27% | 1.33% | 1.45% | 1.76% |
| Mountain House | 1.13% | 1.14% | 1.17% | 1.19% | 1.26% |
| Newark | 1.21% | 1.23% | 1.28% | 1.38% | 1.62% |
| Oakland | 1.43% | 1.52% | 1.71% | 2.24% | 3.26% |
| Piedmont | 1.38% | 1.46% | 1.62% | 2.04% | 3.41% |
| Pleasanton | 1.17% | 1.18% | 1.18% | 1.19% | 1.23% |
| San Leandro | 1.30% | 1.34% | 1.41% | 1.54% | 1.89% |
| San Lorenzo | 1.29% | 1.32% | 1.38% | 1.51% | 1.99% |
| Sunol | 1.12% | 1.12% | 1.13% | 1.16% | 1.22% |
| Tracy | 1.11% | 1.12% | 1.12% | 1.14% | 1.19% |
| Union City | 1.38% | 1.43% | 1.53% | 1.73% | 2.19% |
| Byron | N/A | N/A | N/A | N/A | N/A |
| Kensington | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Assessment Values Across Alameda County, California
When examining property taxes in Alameda 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 Alameda 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 Alameda County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of August.
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 Alameda County.
For example, the median tax bill in Alameda County is $8,209, compared with the national median property tax bill of $2,400. Piedmont has the highest median home price at $1,199,271.
Property Tax Assessment Values Across Alameda County, California
Source: Ownwell
$197,307
$1,084,889
$1,972,470
Median Alameda County Market Value
$564,082
Median California Market Value
$427,605
Median United States Market Value
$235,294
Property Tax Assessment Values Across Alameda County, California
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alameda | $153,419 | $357,106 | $639,469 | $988,244 | $1,329,904 |
| Albany | $107,473 | $277,549 | $518,328 | $890,188 | $1,257,063 |
| Ashland | $93,561 | $248,616 | $400,604 | $634,892 | $802,485 |
| Berkeley | $118,887 | $285,864 | $625,923 | $1,110,479 | $1,633,445 |
| Castro Valley | $169,996 | $362,182 | $597,392 | $869,614 | $1,133,186 |
| Cherryland | $132,504 | $244,943 | $417,801 | $675,000 | $931,893 |
| Dublin | $282,991 | $565,051 | $892,476 | $1,156,846 | $1,495,224 |
| Emeryville | $130,391 | $246,578 | $454,672 | $712,673 | $946,216 |
| Fairview | $151,691 | $314,941 | $548,977 | $813,221 | $1,065,288 |
| Fremont | $188,002 | $381,050 | $684,324 | $1,073,064 | $1,511,983 |
| Hayward | $125,455 | $271,238 | $468,318 | $724,548 | $950,167 |
| Hayward Acres | $232,074 | $304,840 | $443,156 | $660,901 | $976,934 |
| Livermore | $175,805 | $368,207 | $656,695 | $910,408 | $1,228,222 |
| Mountain House | $70,478 | $128,857 | $197,307 | $390,767 | $468,357 |
| Newark | $165,459 | $333,088 | $611,499 | $999,900 | $1,333,000 |
| Oakland | $101,677 | $210,526 | $450,687 | $772,100 | $1,194,178 |
| Piedmont | $213,140 | $584,394 | $1,199,271 | $2,032,732 | $3,037,900 |
| Pleasanton | $232,650 | $455,380 | $844,885 | $1,287,333 | $1,883,630 |
| San Leandro | $129,321 | $269,543 | $443,931 | $664,740 | $847,191 |
| San Lorenzo | $100,195 | $259,112 | $416,403 | $630,215 | $794,621 |
| Sunol | $93,592 | $270,826 | $680,893 | $1,175,430 | $2,225,045 |
| Tracy | $91,451 | $280,591 | $531,185 | $781,854 | $1,040,779 |
| Union City | $145,083 | $286,060 | $510,595 | $807,320 | $1,085,013 |
| Byron | N/A | N/A | N/A | N/A | N/A |
| Kensington | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Property Tax Bills Across Alameda County, California
How are property tax bills calculated in Alameda County, California? Property tax bills are based on the assessed value of a home, which is tied to the property’s market value and local tax rates. With a median home price of $564,082, homeowners can face very different bills depending on where they live and how their property is assessed. In Alameda County, the 25th percentile tax bill is $4,971, the 75th percentile is $12,405, and the 90th percentile is $17,704. That means many homeowners pay well above the national median property tax bill of $2,400.
What factors affect the bill? Location, assessed value, and local taxing jurisdictions all play a role, and bills can vary widely across the county. The highest median tax bill is $19,591 in Piedmont, while the lowest median tax bill is $2,280 in Mountain House.
How can Ownwell help? Ownwell helps homeowners review their property tax assessments, identify savings opportunities, and appeal unfair bills so they may lower what they owe.
Median Alameda County Tax Bill
$8,209
Median California Tax Bill
$5,134
Median United States Tax Bill
$2,400
Property Tax Bills Across Alameda County, California
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Alameda | $3,820 | $6,266 | $9,891 | $14,601 | $19,358 |
| Albany | $4,299 | $6,643 | $10,056 | $15,302 | $20,684 |
| Ashland | $2,346 | $3,846 | $5,906 | $8,571 | $10,482 |
| Berkeley | $5,112 | $7,216 | $11,336 | $17,526 | $24,388 |
| Castro Valley | $2,854 | $5,143 | $7,961 | $11,187 | $14,316 |
| Cherryland | $2,626 | $3,997 | $6,211 | $9,169 | $12,752 |
| Dublin | $4,584 | $8,152 | $12,476 | $16,545 | $21,200 |
| Emeryville | $3,001 | $4,370 | $6,736 | $10,365 | $13,846 |
| Fairview | $2,585 | $4,562 | $7,389 | $10,520 | $13,523 |
| Fremont | $2,905 | $5,122 | $8,562 | $13,066 | $17,986 |
| Hayward | $1,955 | $3,731 | $6,125 | $9,248 | $12,012 |
| Hayward Acres | $4,020 | $5,656 | $7,245 | $8,966 | $12,749 |
| Livermore | $3,100 | $5,342 | $8,690 | $11,666 | $15,405 |
| Mountain House | $880 | $1,529 | $2,280 | $4,411 | $6,190 |
| Newark | $2,666 | $4,599 | $7,827 | $12,313 | $16,221 |
| Oakland | $3,240 | $4,724 | $7,811 | $11,958 | $17,318 |
| Piedmont | $7,621 | $11,896 | $19,591 | $30,224 | $42,651 |
| Pleasanton | $2,865 | $5,449 | $10,007 | $15,202 | $22,315 |
| San Leandro | $2,442 | $4,128 | $6,271 | $8,994 | $11,256 |
| San Lorenzo | $1,993 | $3,916 | $5,769 | $8,332 | $10,285 |
| Sunol | $1,112 | $3,148 | $7,751 | $13,289 | $25,176 |
| Tracy | $1,116 | $3,451 | $6,203 | $9,487 | $12,457 |
| Union City | $3,184 | $5,046 | $7,889 | $11,695 | $15,250 |
| Byron | N/A | N/A | N/A | N/A | N/A |
| Kensington | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
$774
Average Annual Tax Savings
Save on Your Property Taxes and More With Ownwell
Want to lower your Alameda County property taxes?
How Can I Lower My Property Taxes in Alameda County?
Looking to reduce your Alameda County property taxes? Ownwell is the leading property tax appeal company serving Alameda County. We specialize in helping property owners in the Oakland area and beyond lower their tax bills by working directly with the Alameda County Assessment Appeals Board.
Through our tax monitoring service, we collect all necessary information to maximize your tax reductions. We navigate the complexities of the Alameda County property tax appeal process and identify all available exemptions, so you don't have to.
Whether you are a homeowner, a real estate investor, or an asset manager, our local team at Ownwell has the expertise to assess your current property tax situation and find strategic opportunities for reducing your tax burden.
Property Tax Appeals in California
Property tax protests in Alameda County begin when a homeowner believes the assessed value of the property is too high. The process starts by reviewing the assessment notice and gathering evidence that supports a lower market value, such as comparable sales, condition issues, or other factors that may affect value. Homeowners then file an appeal by the deadline, which is September 15, 2026.
After the appeal is submitted, the case is reviewed through the county’s formal process, and the homeowner may be asked to provide additional documentation or attend a hearing. The appeals are heard by the board that listens to the appeals, where the homeowner can explain why the assessment should be reduced. The Tax Assessor is responsible for the original assessment, but the appeal process gives homeowners a chance to challenge that value.
What can happen after a property tax appeal? The assessment may be lowered, which can reduce the tax bill, or it may remain unchanged if the board does not find enough evidence to support a reduction. In some cases, the board may also adjust the value to a different amount based on the information presented.
Ownwell can help homeowners navigate each step of the appeal process, from reviewing the assessment to identifying evidence that supports a stronger case. By handling the paperwork and helping prepare the appeal, Ownwell makes it easier to challenge an unfair assessment and pursue a fairer property tax outcome.
Exemptions in California
What property tax exemption programs are available in Alameda County?
Alameda County homeowners may qualify for several property tax exemption programs that can reduce their assessed property tax burden, especially on a primary residence. The most common is the Homeowners’ Exemption, which is available to owners who live in the home as their principal residence. This exemption is designed for a primary residence and is not meant for investment or second homes.
Other exemption programs may be available depending on a homeowner’s situation, including exemptions for disabled veterans, surviving spouses, and certain disaster-related cases. Each exemption has its own eligibility rules, and homeowners should review them carefully to make sure they apply for the right one.
How do homeowners apply for property tax exemptions in Alameda County?
Homeowners usually apply through the county assessor’s office by submitting the required exemption form and any supporting documentation that proves eligibility. For a primary residence exemption, homeowners generally need to confirm that the property is their main home. Because exemption rules can be specific, it is important to apply as soon as possible and keep records up to date.
How can Ownwell help with Alameda County exemptions?
Ownwell can help homeowners identify which exemption programs they may qualify for, prepare the application correctly, and avoid missed savings opportunities. By making sure the right exemption is filed for the right property, Ownwell helps homeowners take full advantage of available property tax relief.
Available Exemptions
Disabled
Home Stead
Solar/Wind
Non-Profit
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 | |
|---|---|
| Alameda Tax Assessor | |
| Phone | (510) 272-3787 |
| Website | propinfo.acgov.org |
| AssessorWebResponse@acgov.org | |