ParcelioAlameda County, California: parcel data and property records
471,262 Alameda County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by absentee ownership, acreage, year built and owner tenure.
What the data covers
These bars show real field-by-field coverage for Alameda County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Alameda County: vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-08-06.
Areas covered
Parcel counts by place, largest first: Oakland (110,999), Fremont (67,748), Hayward (40,730), Livermore (32,942), Berkeley (30,206).
Recent recorded transfers
14,986 Alameda County parcels have a deed recorded since November 2025. The county publishes recording dates but no sale prices, so these can include non-sale transfers and no price is summarized here.
Nearest counties
- Contra Costa County: about 16 mi away, 398,460 parcels
- San Mateo County: about 28 mi away, 225,059 parcels
- San Francisco County: about 29 mi away, 227,549 parcels
- Santa Clara County: about 36 mi away, 536,950 parcels
- San Joaquin County: about 39 mi away, 255,265 parcels
Search Alameda County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales, year built and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Alameda County map See plans
Common questions
How many parcels are in Alameda County, California?
Parcelio carries 471,262 parcel records for Alameda County, California, with owner information on 99 percent of them.
Can I find out who owns a property in Alameda County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales, year built and lot lines on the map. Sale records here currently run through 2026-08-06.
How do I find vacant land or absentee owners in Alameda County?
We do not hold vacancy data for Alameda County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Alameda County does have owner mailing state: 9,980 parcels have an owner mailing address outside California.
Can I search Alameda County by lot size or acreage?
Yes. Acreage is on 85 percent of Alameda County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.