Rossmoor, CA
Rossmoor, CA's wildfire risk, in USFS's own numbers
USFS scores Rossmoor at the 62nd national percentile for wildfire risk to structures (well above the national norm for wildfire risk), a figure built from 4,513 real buildings rather than raw vegetation cover. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Rossmoor's burn probability — fire likelihood with no building count factored in — sits at the 68th percentile nationally.
Where Rossmoor's buildings actually sit
Only 0.1% of Rossmoor's 4,513 buildings carry Direct exposure and 0% carry Indirect; the remaining 99.9% are Minimal, which shifts the risk driving this page's score toward the surrounding landscape rather than any one structure.
Rossmoor against the rest of the country
Inside California, Rossmoor sits at just the 20th percentile even though it scores 62nd nationally — the state's overall wildfire exposure is high enough to make this a relatively quiet corner of it. Among the 31,521 US communities USFS scores, Rossmoor ranks 11,843 for wildfire risk (1 is highest) and 3,783 by building count (1 is largest). Within California alone, it ranks 1,252 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Rossmoor and the insurance market
Rossmoor sits in California, one of two states that legally require a wildfire-risk disclosure at sale. California's FAIR Plan, the state's insurer of last resort, ended 2025 with 668,609 residential policies after adding 21,859 in Q4 alone — the kind of market shift a 62nd-percentile score like Rossmoor's can end up mattering for. More on the disclosure law.
Lowering exposure, not just insuring around it
Even with 99.9% of Rossmoor outside USFS's Direct and Indirect zones, basic hardening — gutter maintenance, ember-resistant vents — is inexpensive relative to the regional burn-probability risk noted above. Details in the home-hardening guide.
More on how this number was built
Rossmoor's 62nd-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. For more on what minimal exposure implies beyond Rossmoor, see the exposure-zones guide.