Largest Landowners in San Mateo County, CA
The most prolific landowners in San Mateo County, CA — ranked by how many parcels each holds, acreage breaking ties.
Also in San Mateo County: largest parcels
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| # | Owner | Parcels | Acres (mapped) |
|---|---|---|---|
| 1 | COASTSIDE LAND TRUST | 351 | 177 |
| 2 | COUNTY OF SAN MATEO | 334 | 14,856 |
| 3 | CITY & CO OF S F WATER DEPT | 331 | 20,769 |
| 4 | CITY OF REDWOOD CITY | 208 | 487 |
| 5 | STATE OF CALIFORNIA | 185 | 20,594 |
| 6 | CAREY HELEN J TR | 184 | 270 |
| 7 | CITY OF BELMONT | 176 | 352 |
| 8 | CITY OF DALY CITY | 173 | 285 |
| 9 | MIDPENINSULA REGIONAL | 162 | 8,129 |
| 10 | CITY OF SAN MATEO | 146 | 329 |
| 11 | CITY OF SOUTH SAN FRANCISCO | 141 | 342 |
| 12 | SAN MATEO LAND EXCHANGE | 133 | 19 |
| 13 | STATE OF CALIF | 130 | 37,500 |
| 14 | CITY OF PACIFICA | 124 | 665 |
| 15 | WOODLAND PARK PROPERTY OWNER LLC | 115 | 48 |
| 16 | ARCHDIOCESE OF S F PARISH | 107 | 189 |
| 17 | UNITED STATES OF AMERICA | 103 | 11,019 |
| 18 | CALIFORNIA WATER SERVICE CO | 102 | 1,463 |
| 19 | WESTLAKE ASSOC LESSEE | 102 | 55 |
| 20 | CITY OF SAN BRUNO | 101 | 238 |
| 21 | PENINSULA OPEN SPACE TRUST | 100 | 10,614 |
| 22 | CITY OF BRISBANE | 96 | 146 |
| 23 | CALLAN THOMAS J JR & G A TRS | 92 | 16 |
| 24 | CITY OF HALF MOON BAY | 81 | 146 |
| 25 | WELCH FAMILY PARTNERSHIP | 79 | 15 |
San Mateo County does not publish parcel acreage, so acreage below is measured from each owner's parcel boundaries. That is a close match for deeded acreage — the median of the two agrees where counties publish both — but it is not the deed, and it will differ where a deed runs to the centreline of a road or where several units share one footprint.