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Alameda County, California property search

Search an address or an owner in Alameda County, California with the box at the top of the map, or tap a lot, for its owner, lines and acreage. 489,758 lots are mapped here, covering 644,657 acres. 38,475 of them are held by institutions rather than by individuals.

Farmers and landowners in Alameda County received $534,000 in federal farm program payments in 2025, paid to 49 recipients. 4,102 acres of agricultural land here are disclosed as foreign-held, the most by owners from Netherlands. Crop insurance paid $763,000 in claims for the 2024 crop year.

489,758
Lots mapped
644,657
Acres
38,475
Institutional

Land use in Alameda County

Parcels and acreage by land use in Alameda County, California
Land useParcelsAcres
1100265,51643,237
730054,735107,008
180025,8143,089
730517,45416,746
150015,5151,115
030011,037173,025
22008,5271,014
77006,2864,249
10005,1632,027
24004,291655
21004,082788
25004,078461

Largest landowners in Alameda County

Largest landowners by acreage in Alameda County, California
OwnerParcelsAcres
EAST BAY REGIONAL PARK DISTRICT61132,951
STATE OF CALIFORNIA92114,733
CITY OF OAKLAND1,1397,375
EAST BAY MUNICIPAL UTILITY DISTRICT2406,020
CITY & CO SF WATER DEPT2585,126
ALAMEDA COUNTY FLOOD CONTROL1,2384,210
WEB RANCH LLC233,993
MISSION BOULEVARD HILLS LLC553,328
MULQUEENEY RANCH PROPERTIES212,732
CITY OF ALAMEDA3742,452

Companies, trusts and public agencies, ranked by acres held under the name on the assessor's file. Private individuals are not ranked. Largest landowners in California

Federal farm payments in Alameda County

$534K
Paid in 2025
49
Recipients
Federal farm program payments by program in Alameda County, California, 2025
ProgramPaid
Emergency Livestock Relief Program 2023-24$302K
Marketing Assistance for Specialty Crops$91K
Emergency Commodity Assistance Program$43K
Emergency Assist Livestock Bees Fish ELAP$32K
Supplemental Disaster Relief Non-Spec Crops$27K
Supplemental Disaster Relief Spec Crops$26K

USDA Farm Service Agency payment files, 2025. Compare farm subsidies by county

Foreign-held farmland in Alameda County

4,102
Acres disclosed
14
Holdings
Foreign-held agricultural land by country in Alameda County, California, 2024
CountryAcres
Netherlands1,187
Canada790
Germany708
Singapore440
Kuwait310
Malaysia300

Largest disclosed holders

Largest foreign holders of agricultural land in Alameda County, California
Holder (country)Acres
ORICAL INVESTMENT, INC. (NETHERLANDS)1,100
SCHROPP-ALAMEDA L.P. (GERMANY)488
WONG, LOK KEU ET AL. (SINGAPORE)440
KUDEVCO LTD. (KUWAIT)310
PRIMUS INVESTMENT CO., INC. (MALAYSIA)300

USDA Agricultural Foreign Investment Disclosure Act filings, holdings at the end of 2024. Only disclosed interests are counted. See foreign-owned farmland by county

Crop insurance in Alameda County

56
Policies
85,442
Insured acres
$763K
Claims paid
0.71
Loss ratio
Crop insurance claims by crop in Alameda County, California, 2024
CropClaims
Pasture,Rangeland,Forage$557K
Grapes$137K
Apiculture$69K

USDA Risk Management Agency Summary of Business, 2024 crop year.

Conservation and the power grid

89
Substations
2
345 kV and up
500 kV
Highest voltage

Conservation Reserve Program acres under contract (USDA FSA). Substations in service, from a public copy of the federal HIFLD layer.

Find out who owns a property in Alameda County by address, free, or work out a lot's acreage.

Nearby counties in California

  • Contra Costa County381,595
  • San Mateo County235,344
  • San Francisco County235,071
  • Santa Clara County501,322
  • San Joaquin County252,719
  • Solano County153,381
  • Santa Cruz County97,180
  • Marin County96,232

All California counties

Alameda County last published these records on August 2, 2026. Assessment records, not a survey.