Alameda County California Property Appraiser, Search Your Record Lookup
In Alameda County California 472,000+ parcels, You Can Search Property Record With Parcel number, owner name, or address. If You Want to search With Parcel ID, enter the with spaces (example: 17 31 18 35514 000 0260). Get property, tax and owner details.
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In Alameda County, California, the County Assessor’s Office manages and updates comprehensive property and parcel data for public use. The county currently tracks approximately 472,000 parcels and 634,000 matched buildings, leveraging GIS property points and validated address records across the region. Property address records were recently updated, identifying around 634,835 secondary addresses, including multi-unit and suite identifiers. The Assessor has also standardized zoning data for all 472,000 parcels, supporting accurate property assessments, parcel records, and tax roll information.
Alameda County, Florida Property Overview – 2026
In Alameda County, California, there are approximately 407,237 residential and 22,759 commercial properties. The average single-family home is 68 years old with 1,859 sq. ft. In 2026, 1,554 homes were sold, with 12,462 sales recorded over the past year. About 0.68% of homes are seriously underwater, 50.91% are high-value properties, and the effective property tax rate is 0.74%. Foreclosure filings totaled 257 year-to-date.
Residential Properties
410,000+
Commercial Properties
Avg. Home Age Single Family
Avg. Square Feet Single Family
Residential Sales 2026
Homes Seriously Underwater
Residential Sales past year
Rich Homes percentage
Effective 2026 Property Tax
Total Foreclosure Filings 2025
257 Year to Date
Top Cities in Alachua County
The most popular cities in Alameda County, California are Oakland with 140,000 parcels, Berkeley with 50,000 parcels, and Fremont with 60,000 parcels. These cities serve as the county’s primary residential and commercial centers. With diverse neighborhoods, educational institutions, and thriving industries, they play a key role in property assessments, zoning management, and the overall parcel data maintained by the Alameda County Assessor’s Office.
Oakland city
99,590+ Parcels
Berkeley city
29,383+ parcels
463,215 Parcels
Alameda County, CA Property Search Tool Has 4 Best Methods
Our Alameda County, California Property Search Tool makes accessing property records online simple and free. You can search by owner name, parcel number (APN), property address, or city name. Instantly view ownership details, tax records, sales history, and complete property information with just a few clicks.
Search By Owner Name
You Can Use Owner name For Property Search In Alameda County, California.
Search By Address
You Can Also search Property Info with address in Alameda County, California.
Search By Parcel PIN
Use Parcel Number For Exect Search In Alameda County, California.
Search By City Name
If You Dont't have any other Option, search With City Name, Use in Address
Learn How to Use the Alameda County Property Search Tool
Our Alameda County, California. Property Search Tool delivers comprehensive property insights with every search. Search by owner name, parcel number (PIN), or address to access full property records, ownership details, tax information, land values, and official county assessment data everything you need for accurate and informed real estate research.
Parcel Number
The Parcel Number (APN) is a unique identifier assigned by Alameda County to each property for tracking, taxation, and assessment purposes. Using this number provides the most accurate way to locate a specific property record quickly and reliably.
Owner Name
The Owner Name field displays the legally registered property owner based on Alameda County public records. This feature helps verify ownership, confirm title details, and identify the responsible party for taxes or any legal matters related to the property.
Property Address
The Property Address represents the physical location of a property in Alameda County. It ensures precise property identification, supports mailing verification, and provides accurate search results for buyers, researchers, and real estate professionals.
Tax District
The Tax District identifies the local taxing authority for a property in Alameda County. It determines applicable tax rates, assessments, and jurisdiction-specific property taxes, helping homeowners understand their annual tax obligations accurately.
Property Use Code
The Property Use Code indicates how a property in Alameda County is classified—residential, commercial, or vacant land. This classification impacts property taxes, zoning regulations, and market value assessments, ensuring accurate records and informed decision-making.
Legal Description
The Legal Description provides the officially recorded subdivision, lot, and block details for a property in Alameda County. It is essential for legal documentation, title verification, and accurately identifying property boundaries.
Tax Book
The Tax Book is the official Alameda County record that documents property tax information. It helps trace historical tax records, verify past assessments, and provides accurate reference for current and future property tax obligations.
Tax Page
The Tax Page indicates the specific page in Alameda County tax records where a property is listed. This enables faster referencing for legal purposes, professional research, and accurate verification of property tax information.
Annual Property Taxes
This section shows the total assessed property taxes for a property in Alameda County, helping homeowners, investors, and buyers understand their annual financial responsibilities and plan accordingly for taxes and related obligations.
ZIP Code
The ZIP Code identifies the postal area of a property in Alameda County. It supports demographic research, market analysis, and accurate geographic identification for buyers, investors, and real estate professionals.
Owner City
The Owner City shows the city listed on the property owner’s mailing address in Alameda County. This information helps identify whether a property is owner-occupied or investor-owned, supporting research, investment decisions, and tax verification.
Property City
The Property City identifies the municipality where a property in Alameda County is physically located. This designation affects local zoning rules, property taxes, and community regulations, ensuring accurate assessments and informed decision-making.
Land Value
The Land Value reflects the county-assessed value of the land in Alameda County, excluding any buildings or structures. It is essential for accurate property tax calculations, investment analysis, and evaluating the true value of a property parcel.
Taxable Value
The Taxable Value represents the portion of a property’s assessed value in Alameda County that is subject to taxation after exemptions. It directly determines annual property tax obligations, helping homeowners, investors, and buyers plan their finances accurately.
Stated Area (Acres)
The Stated Area shows the total land size in acres for a property in Alameda County. It helps buyers, developers, and investors assess lot dimensions, development potential, and the overall scale of the property.
Alameda County Property Tax & Demographic Data
Alameda County city-level property and tax data for 2025–2026, including estimated parcels, population, land area, effective tax rates, and median property taxes. Note: California does not use a "millage rate" in the traditional sense; instead, it applies a base property tax rate of 1.00% of assessed value (Proposition 13) plus local voter-approved bonds and special assessments.
| City Name | Total Parcels (Est.) | Total Population | Land Area (Sq Mi) | Effective Tax Rate (Est.) | Median Property Tax |
|---|---|---|---|---|---|
| Oakland | 115,000 | 444,839 | 55.9 | 1.35% – 1.45% | $8,800 |
| Fremont | 68,500 | 227,065 | 77.5 | 1.15% – 1.25% | $9,200 |
| Hayward | 46,000 | 156,297 | 45.3 | 1.20% – 1.30% | $5,500 |
| Berkeley | 32,500 | 120,514 | 10.5 | 1.40% – 1.60% | $9,400 |
| San Leandro | 26,000 | 87,400 | 13.3 | 1.20% – 1.30% | $4,800 |
| Livermore | 29,500 | 85,100 | 26.4 | 1.10% – 1.20% | $7,400 |
| Alameda | 21,000 | 78,795 | 10.4 | 1.15% – 1.25% | $7,200 |
| Pleasanton | 24,000 | 77,500 | 24.3 | 1.10% – 1.20% | $9,500 |
| Union City | 19,500 | 68,000 | 19.5 | 1.25% – 1.35% | $6,100 |
| Newark | 14,000 | 48,200 | 13.9 | 1.15% – 1.25% | $6,500 |
| Dublin | 16,500 | 71,200 | 15.2 | 1.20% – 1.35% | $9,100 |
| Albany | 5,800 | 19,600 | 1.8 | 1.50% – 1.80% | $10,200 |
| Piedmont | 3,900 | 11,200 | 1.7 | 1.30% – 1.50% | $15,000+ |
| Emeryville | 3,500 | 12,500 | 1.2 | 1.45% – 1.55% | $8,200 |
Unincorporated Alameda County Data (2025–2026)
Unincorporated areas are managed directly by the county rather than city councils. Combined, these areas would form the 4th largest "city" in Alameda County.
| Area Name | Total Parcels (Est.) | Total Population | Land Area (Sq Mi) | Effective Tax Rate (Est.) | Median Property Tax |
|---|---|---|---|---|---|
| Castro Valley | 22,500 | 65,389 | 16.9 | 1.15% – 1.25% | $9,100 |
| San Lorenzo | 8,500 | 29,000 | 2.8 | 1.20% – 1.30% | $5,763 |
| Ashland | 6,200 | 23,000 | 1.8 | 1.25% – 1.35% | $4,200 |
| Cherryland | 4,100 | 15,500 | 1.2 | 1.25% – 1.35% | $3,900 |
| Fairview | 3,800 | 10,500 | 2.8 | 1.15% – 1.25% | $8,400 |
| Sunol | 650 | 950 | 32.1 | 1.05% – 1.15% | $11,500 |
Top 10 Largest Property Owners in Alameda County, California
The top Alameda County property owners include the State of California, Prologis, City of Oakland, East Bay Regional Park District, EBMUD, and major commercial players with extensive parcels and commercial space.
| Rank | Owner Name | Parcel Count / Sq. Ft. | Notes / Location |
|---|---|---|---|
| 1 | State of California | 1,776 parcels | Largest overall landowner |
| 2 | Prologis Inc. | 146 properties, 23.35M sq. ft. | Major hubs in San Leandro & Oakland |
| 3 | City of Oakland | 800+ parcels | Municipal and public use |
| 4 | East Bay Regional Park District | 666 parcels | Conservation & recreation |
| 5 | Alameda County Flood Control | 600 parcels | Infrastructure & water management |
| 6 | East Bay Municipal Utility District (EBMUD) | 590 parcels | Water utility services |
| 7 | Hines | 9.4M sq. ft. | Commercial properties across Bay Area |
| 8 | Alexandria Real Estate Equities | 8.7M sq. ft. | Life science properties |
| 9 | Brookfield Properties | 8.2M sq. ft. | Commercial & mixed-use space |
| 10 | Leland Stanford Jr. University | 470 parcels | Primarily Santa Clara, some in Alameda County |
FAQ's
What information can I find using the Alameda County Property Search Tool?
The Alameda County Property Search Tool lets you locate properties by owner name, parcel number (APN), property address, or city. Instantly access detailed ownership records, tax information, land value, and official county property data.
How do I search for a property?
You can search by owner name, parcel number (PIN), property address, or city name. Simply enter the relevant information in the search tool, and you’ll instantly see the property details.
Is the property information free to access?
Yes, all property data provided through the Alameda County Property Search Tool is completely free for public use. No subscription or payment is required.
How often is the property data updated?
The tool uses official county records, updated regularly to reflect new sales, assessments, and ownership changes, ensuring accurate and up-to-date property information.
Can I use this tool for legal or official purposes?
While the tool provides official county data, it is primarily for research and informational purposes. For legal matters, always verify with official county records or documents.