Alameda County, CA Property Records
Property records in Alameda, California provide important details about real estate, including ownership history, parcel numbers, assessed values, tax information, legal descriptions, recorded deeds, transfers, and liens. These records are useful for buyers, sellers, homeowners, real estate professionals, researchers, and anyone verifying property ownership or reviewing a property’s financial and legal history.
Official Alameda property records are maintained primarily by Alameda County agencies, including the Assessor’s Office for assessment and parcel information and the Clerk-Recorder’s Office for recorded documents such as deeds. Users can access official resources through the county’s online services, including the Alameda County Assessor’s Office page for Alameda property records. For certified copies or detailed recorded documents, users may need to contact the appropriate county office directly or follow its online request procedures.
Alameda County, CA Property Records & Statistics
Alameda County is one of the most expensive housing markets in California. The median rent is $2,228.50, far above the state median of $1,260 and the national median of $840.25. The median home value of $1,065,850 likewise sits well above California's $403,775 and the national $173,750, reflecting strong demand across the East Bay.
The median property tax rate is 0.74%, slightly higher than the state rate of 0.69% and equal to the national rate of 0.74%. Applied to such high home values, even a typical rate produces substantial annual tax bills for owners.
Incomes are high as well. Median household income reaches $121,609, compared with $78,109.75 statewide and $65,108 nationally, which helps offset some of the cost pressure. The unemployment rate of 3.25% is lower than the state's 3.72%, though a little above the national 2.87%.
About 40.54% of occupied homes are renter-occupied, versus 33.49% in California and 21.81% nationally. That large rental share points to a dense, urban market where many residents rent rather than buy. For buyers, the combination of $1,065,850 home values and $2,228.50 rents means affordability is the main challenge, even with incomes well above the state and national medians. Investors and researchers should read the figures alongside local neighborhood trends, since a county this large contains very different submarkets.
Median Rent
Median Property Tax Rate
Median Home Value
Median Income
Unemployment Rate
Renter Occupied Housing
Property Records, Assessments, and Valuations in Alameda
Alameda County property records cover tax assessments, recorded deeds and mortgages, property valuations, and foreclosure filings. The county has 474,323 total parcels, including 418,222 residential and 23,193 commercial parcels, and tax records reach 93.8% of the population for the 2025 assessment year. Recorded documents include 2,201,177 deeds and 2,130,782 mortgages, and valuation data is available for 356,199 properties, with the latest update on August 19, 2025.
| Key Data | Details |
|---|---|
| Total Parcels | 474,323 |
| Residential Parcels | 418,222 |
| Commercial Parcels | 23,193 |
| Tax Record Coverage | 93.8% |
| Assessment Year | 2025 |
| Deed Records | 2,201,177 |
| Mortgage Records | 2,130,782 |
| Properties with Valuation Data | 356,199 |
| Latest Valuation Update | August 19, 2025 |
| Notice of Trustee Sale Records | 698,997 |
Assignment and Release Records
Assignment and release records document what happens to a mortgage after it is recorded. An assignment shows that a mortgage was transferred from one lender or loan holder to another, and a release shows that the loan was satisfied and the lien removed from the property.
Alameda County has 1,639,500 assignment and release records on file. They include 190,509 assignment documents and 1,447,219 release documents, along with 1,772 other documents. Assignments were recorded from April 15, 2004 through August 20, 2025, and releases from December 11, 2001 through August 20, 2025.
These records help property researchers see who holds a mortgage, trace a loan between lenders, and confirm that earlier loans were paid off. Buyers, owners, title researchers, and lenders can use them to spot open liens before a sale or refinance and to review the loan history of a specific property.
How to Search Alameda County, CA Property Records
Alameda County property records are maintained by the Alameda County Clerk-Recorder, which records deeds, mortgages, and other real estate documents. Ownership, transfer history, and recorded liens can be found through the office. Together these records cover the county's 474,323 parcels and 2,201,177 recorded deeds.
To search recorded documents online, use the Alameda County official records search, which lets you look up deeds and other filings. For office information, services, and instructions, visit the Alameda County Clerk-Recorder website. Recording and request forms are available on the Alameda County Recorder forms page. The Alameda County eRecording information page explains electronic recording.
For assessed values and parcel details, the Alameda County Assessor property search accepts a parcel number or address, and the Alameda County property tax portal shows tax bills and payments. Planning and permit questions go to the Alameda County Planning Department.
The office is located at 1106 Madison Street, Oakland, CA 94607 and can be reached at 510-272-6362 and is open Monday-Friday 8:30 AM to 5:00 PM for in-person requests. Staff can help if you cannot find a document online.
Online searches generally let you filter by name, document type, and recording date, and results typically show the recording date, document type, and the parties named in each filing. Opening a record lets you review the document details and request copies when needed.
Before you search, have the owner name, property address, or document type ready. Start with the most complete details you have, review the results, and open the document that matches your property. If a record does not appear, try variations of the name or a wider date range, or contact the office directly.
Alameda Registrar of Deeds
The Alameda County Probate Office is located at 1106 Madison Street, Oakland, CA, 94607 and can be reached at 510-272-6362. Office hours are Monday-Friday 8:30 AM – 5:00 PM. Records can be accessed through acgov.org or the official website acgov.org.
Alameda County Clerk-Recorder
Alameda County Property Records FAQ
How can I search Alameda County property records by address?
Start with the Alameda County official records search, where recorded documents can be searched by name, date, or document type, then match results to the property address. For help locating a specific parcel, call the Alameda County Clerk-Recorder at 510-272-6362. Hours are Monday-Friday 8:30 AM to 5:00 PM. Having the street address and owner name ready makes searching faster.
How can I find property owners in Alameda County?
Owner names appear on recorded deeds, which you can search through the Alameda County official records search. Look up the property's most recent deed to see the current owner. The Alameda County Clerk-Recorder at 1106 Madison Street, Oakland, CA 94607 can also help with in-person requests at 510-272-6362. Searching by owner name, date range, or document type often gives the best results.
How can I check a property's assessed value in Alameda County?
Use the Alameda County Assessor property search to look up a parcel by parcel number or street address and see its assessment. The county's tax records currently reflect the 2025 assessment year. Recorded deeds from the Clerk-Recorder help confirm recent transfers.
Where can I find Alameda County property tax bills and payment records?
Bills, balances, and payments are available through the Alameda County property tax portal, run by the Treasurer-Tax Collector. Enter your parcel number to view or pay a secured bill. Payments by card over the phone can be made at 510-272-6800.
How can I find deeds and other recorded documents in Alameda County?
Deeds, mortgages, and other recorded documents are held by the Alameda County Clerk-Recorder. Search online with the Alameda County official records search, or visit 1106 Madison Street, Oakland, CA 94607. Hours are Monday-Friday 8:30 AM to 5:00 PM. Call 510-272-6362 for questions about copies. Copies of recorded documents may be available for a fee; staff can explain how to request them.
Where can I access Alameda County parcel maps and GIS information?
Start with the Alameda County Zoning Viewer, an interactive map from the county Planning Department for unincorporated areas. Assessor parcel maps can be reached from the Alameda County Assessor property search. Recorded documents from the Alameda County Clerk-Recorder website supply legal descriptions to use alongside a map. Maps are for reference and do not replace a professional land survey.
How can I check permits and zoning information in Alameda County?
Unincorporated areas such as Castro Valley, San Lorenzo, Ashland, and Sunol are served by the Alameda County Planning Department, reachable at 510-670-5400, and permit applications go through the county's online permit portal. Properties inside a city follow that city's rules instead. Ask about required permits before starting construction.
How can I create a list of property owners in Alameda County?
There is no single downloadable owner list in the recorder's online tools; searches work property by property. For larger requests, call the Alameda County Clerk-Recorder at 510-272-6362 to ask what record requests are possible, and review the Alameda County Clerk-Recorder website for forms. Larger or recurring requests may require a written request, so ask staff how to proceed.