Home › US › Brownfields › California › San Mateo County
Brownfield sites in San Mateo County, California
EPA lists 22 brownfield sites in San Mateo County. Grant recipients report them. 9 carry EPA's ready-for-reuse flag.
Zoning: Check zoning with the city.
The sites
Each row is a site name and city, as EPA holds them. Where several sites share a name, the count shows how many.
| Site | City | Sites | EPA flags |
|---|---|---|---|
| Cooley Landing | East Palo Alto | 2 | Ready for reuse (1), Assessment (1), Cleanup (1), Targeted assessment (1) |
| Cooley Landing Area A | East Palo Alto | 1 | None |
| Cooley Landing Area B | East Palo Alto | 1 | None |
| Former Rogge's Auto Wrecking/City Corp Yard | East Palo Alto | 1 | None |
| Iwasaki/Olson Development | East Palo Alto | 1 | None |
| NE Corner of University & Bay | East Palo Alto | 1 | None |
| Palo Mobile Estates | East Palo Alto | 1 | None |
| Windmill School | Portola Valley | 1 | Ready for reuse |
13 more sites have an address or parcel number as the EPA name. We count them but don't show the name.
To see each site in San Mateo County on a map, use the Cleanups in My Community map, on EPA's site.
EPA flags
| EPA flag | Sites |
|---|---|
| Ready for reuse | 9 |
| Assessment | 1 |
| Cleanup | 1 |
| Targeted assessment | 6 |
| State or tribal program | 0 |
| Multipurpose grant | 0 |
| Area-wide planning | 0 |
A site can carry more than one flag. The grant flags show which kinds of EPA brownfield funding a site is listed under.
What this data holds
- Acreage isn't in EPA's national data, so we don't show site sizes.
- We hold no flood data for these sites.
- We show the city and county, not street addresses.
- Grant recipients report these sites to EPA. A flag is EPA's record, not a site visit.
Go further with a paid plan
A paid plan runs site reports and area scans on the sites you pick. How much we read varies by state.
Starter: US$39 a month for 100 credits. Run full site reports, area scans and letter drops.
Or create a free account first. No card needed.
All California counties · Every state
US EPA data, as of 18 Oct 2026, reported by grant recipients. Not endorsed by EPA. Not legal or environmental advice; confirm with the state or EPA region.