How exposed is Potrero to wildfire?
USFS scores Potrero at the 100th national percentile for wildfire risk to structures (in USFS's highest wildfire-risk band nationally), a figure built from 296 real buildings rather than raw vegetation cover. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Potrero at the 100th national percentile — 0 points above its risk-to-structures score, a gap driven by how much is actually built there.
Potrero's building exposure, zone by zone
Of Potrero's 296 counted buildings, 88.5% carry Direct exposure and only 0% carry Minimal — a lopsided split that puts defensible-space clearing ahead of vents or roofing as the intervention worth doing first.
Potrero against the rest of the country
Potrero scores 100th nationally and 100th within California — close enough that its state context doesn't change the picture the national number already gives. Among the 31,521 US communities USFS scores, Potrero ranks 9 for wildfire risk (1 is highest) and 21,727 by building count (1 is largest). Within California alone, it ranks 9 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
What this risk score means for insurance
Potrero's 100th-percentile score lands in California, the only two states requiring a wildfire disclosure at sale. California's surplus-lines homeowners market passed 300,000 policies for the first time in 2025, driven by carriers pulling back from wildfire-exposed areas statewide. The disclosure-law guide covers what it requires.
What would actually reduce this score
Because Direct exposure dominates in Potrero (88.5%), the highest-leverage fix is defensible space, not roofing or vents alone — covered in the home-hardening guide.
More on how this number was built
Every one of the two percentiles behind Potrero's 9-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. For more on what direct exposure implies beyond Potrero, see the exposure-zones guide.