Marin County, California property search
Search an address or an owner in Marin County, California with the box at the top of the map, or tap a lot, for its owner, lines and acreage. 96,232 lots are mapped here, covering 371,943 acres. 10,419 of them are held by institutions rather than by individuals.
Farmers and landowners in Marin County received $376,000 in federal farm program payments in 2025, paid to 82 recipients. 325 acres of agricultural land here are disclosed as foreign-held, the most by owners from New Zealand. Crop insurance paid $292,000 in claims for the 2024 crop year.
- 96,232
- Lots mapped
- 371,943
- Acres
- 10,419
- Institutional
Land use in Marin County
Parcels and acreage by land use in Marin County, California| Land use | Parcels | Acres |
|---|
| Single-Resid. - Improved | 62,531 | 27,585 |
|---|
| Single Family Attached | 13,874 | 355 |
|---|
| Multiple-Resid. - Improved | 4,374 | 2,048 |
|---|
| Tax Exempt | 4,316 | 192,502 |
|---|
| Single-Resid. - Unimproved | 3,890 | 5,209 |
|---|
| Commercial - Improved | 2,862 | 5,282 |
|---|
| Exemption - Improved | 880 | 5,134 |
|---|
| Common Area | 657 | 1,680 |
|---|
| Industrial - Improved | 535 | 673 |
|---|
| Floating Home | 381 | 5 |
|---|
| Mobile Homes | 361 | 2 |
|---|
| Commercial - Unimproved | 314 | 763 |
|---|
Largest landowners in Marin County
Largest landowners by acreage in Marin County, California| Owner | Parcels | Acres |
|---|
| CALIFORNIA STATE OF | 301 | 37,458 |
|---|
| MARIN MUNICIPAL WATER DISTRICT | 293 | 11,050 |
|---|
| MARIN COUNTY OF | 274 | 5,508 |
|---|
| MARIN COUNTY OPEN SPACE DIST | 124 | 3,823 |
|---|
| SKYWALKER PROPERTIES LTD | 19 | 3,501 |
|---|
| STATE OF CAL | 37 | 2,616 |
|---|
| MARIN COUNTY OPEN SPACE DISTRICT | 106 | 2,573 |
|---|
| H RANCH LLC | 6 | 2,296 |
|---|
| BARBONI FAMILY LTD PTNRS | 7 | 2,016 |
|---|
| SKYWALKER PROPERTIES LTD LLC | 3 | 1,559 |
|---|
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 Marin County
- $376K
- Paid in 2025
- 82
- Recipients
Federal farm program payments by program in Marin County, California, 2025| Program | Paid |
|---|
| Emergency Livestock Relief Program 2023-24 | $127K |
|---|
| Marketing Assistance for Specialty Crops | $108K |
|---|
| Supplemental Disaster Relief Spec Crops | $94K |
|---|
| Livestock Indeminity Payments Program | $47K |
|---|
USDA Farm Service Agency payment files, 2025. Compare farm subsidies by county
Foreign-held farmland in Marin County
- 325
- Acres disclosed
- 2
- Holdings
Foreign-held agricultural land by country in Marin County, California, 2024| Country | Acres |
|---|
| New Zealand | 190 |
|---|
| Canada | 135 |
|---|
Largest disclosed holders
Largest foreign holders of agricultural land in Marin County, California| Holder (country) | Acres |
|---|
| Pattern Solar and Storage Development, LLC (CANADA) | 135 |
|---|
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 Marin County
- 28
- Policies
- 22,917
- Insured acres
- $292K
- Claims paid
- 0.70
- Loss ratio
Crop insurance claims by crop in Marin County, California, 2024| Crop | Claims |
|---|
| Pasture,Rangeland,Forage | $170K |
|---|
| All Other Crops | $98K |
|---|
| Grapes | $24K |
|---|
USDA Risk Management Agency Summary of Business, 2024 crop year.
Conservation and the power grid
- 17
- Substations
- 230 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 Marin County by address, free, or work out a lot's acreage.
This copy of Marin County's records was taken on August 12, 2026. Assessment records, not a survey.