The houses on Via Appia Drive in Louisville, Colorado, are not the houses that burned. The ones that burned had wood siding and asphalt shingles and the kind of landscaping that looks beautiful until a 100-mph wind drives a grassfire through a suburban neighborhood on December 30. The houses standing there now have Class A metal roofing, fiber cement siding, ember-resistant vents screened to one-eighth of an inch. Five feet of non-combustible clearance between structure and ground. The Marshall Fire destroyed more than 1,000 homes. By December 2024, roughly 712 had been rebuilt, far outpacing the national post-wildfire average.
The families who came back built structures the fire couldn't have taken. They did this while carrying mortgages on houses that no longer existed, while fighting insurers over coverage gaps of $100,000 to $250,000, while a study of nearly 5,000 policyholder contracts found them 74 percent underinsured. Louisville City Council member Judi Kern, who lost her own home, told Denver7:
"About 50% of the home dwelling coverage needed to actually rebuild."
On July 1, Colorado's HB25-1182 takes effect. It is the first law in any state requiring insurers to show homeowners the wildfire risk score driving their premiums, explain the factors behind it, and incorporate property-specific and community-level mitigation into pricing. Louisville's rebuilders will finally see the number that prices their risk.
The number may have no idea what it's looking at.
The Geography of Recognition
Boulder County runs Wildfire Partners, a program launched in 2014 that assesses properties, guides homeowners through mitigation, and issues certificates that certain insurers accept as proof of reduced risk. Three carriers recognize the certificate: Allstate, State Farm for existing customers, and USAA. Certification takes over a year and thousands of dollars.
Wildfire Partners does not issue certificates in East Boulder County, where Louisville, Superior, and the entire Marshall Fire rebuild zone sit. The program has no insurance agreements in place to recognize mitigation in these areas.
The community that suffered Colorado's worst wildfire, that rebuilt with fire-resistant materials before any code required it, sits outside the geography where the state's primary mitigation certification program has insurance recognition.
Louisville passed a fire-hardening ordinance requiring Class A roofing and non-combustible siding for new construction, strengthened through three successive rounds: Ordinance 1884 in 2024, Ordinance 1891 in 2025, and Emergency Ordinance 1913, effective January 21, 2026. But the code exempts homes already permitted for Marshall Fire rebuilds. The exemption was practical. Families who were 74 percent underinsured couldn't absorb additional compliance costs mid-construction. So the rebuilders who hardened their homes did it voluntarily, outside any code mandate, undocumented by any certification program.
Inside the Score
The law's provisions are genuinely unprecedented. Insurers must provide a plain-language explanation of the wildfire risk score, the range of possible scores, and the primary property features that influenced the assessment, all within 60 days of renewal. Homeowners get the right to appeal. If an insurer lacks a mitigation model, it must provide a manual discount to policyholders who prove their property has been hardened.
But insurers must submit information about their wildfire risk models to the Division of Insurance, and those filings are classified as trade secrets, exempt from Colorado's open records law. Homeowners will see their score. They will see the factors. The weighting behind those factors stays locked. Transparency has a floor: you learn what the system concluded about you, and you can guess at the reasoning.
The early evidence from homeowners who've already tried to make mitigation count shows how much depends on what sits between the work and the model. One Boulder County homeowner who replaced cedar siding with concrete saw a $50 annual premium reduction. A metal roof earned a more meaningful discount that lasted one year before premiums climbed 70 percent. A homeowner documented by the Aspen Times earned a Firewise USA certificate for her community's collective work, then called her carrier. They "had no clue what I was talking about."
HB25-1182 requires insurers to incorporate "community mitigation actions" into their models. Whether Louisville's municipal fire-hardening code qualifies is an open regulatory question. As of early May, no Division of Insurance rulemaking documents or implementation bulletins for HB25-1182 have surfaced publicly. The law takes effect in less than two months. The translation infrastructure between what a community builds and what a model registers doesn't yet exist for Louisville. Disclosure, absent that infrastructure, makes a gap visible and leaves it open.
What July Might Open
The law could still generate the evidence that defines where the system breaks, even on a timeline longer than anyone on Via Appia Drive wants. The appeal mechanism could force insurers to justify scores in writing, creating a paper trail the Division of Insurance has never had. If enough Louisville homeowners appeal, the commissioner's office accumulates data on exactly where models fail to recognize physical mitigation. Boulder County is trying to extend its reach: a new multi-family mitigation rebate program opened applications in April 2026, and the first Firewise USA designation in nearby Lafayette arrived in February. The certification geography is inching eastward, toward the burn scar.
None of this is guaranteed. It remains genuinely uncertain whether HB25-1182 closes the distance between what Louisville built and what the insurance market recognizes, or whether it simply makes that distance legible for the first time. From Via Appia Drive, where the metal roofs catch the afternoon sun differently than the old ones did, the families already know what they built. They've been waiting for the system to catch up.
- Governor's $800 target: Governor Polis announced a roadmap to reduce homeowners insurance aiming to move Colorado from the 6th most expensive state for coverage to 13th by December 2027, with an average savings goal of $800 per household.
- Eighteen states following Colorado: At least 18 states have introduced insurance reform legislation in 2026 building on HB25-1182's framework, making Colorado's July implementation a national test case for whether mitigation-based transparency changes outcomes.
- The underinsurance research: A Federal Reserve Bank of Philadelphia working paper analyzing nearly 5,000 Marshall Fire policyholder contracts found 74 percent were underinsured and 36 percent severely so, raising questions about whether disclosure of risk scores will matter if coverage limits remain structurally inadequate.
- Colorado's FAIR Plan strain: Colorado's insurer of last resort, which only began accepting residential applications in spring 2025, offers only actual cash value coverage up to $750,000 and requires proof of rejection from three carriers, leaving open the question of what happens if a Marshall-scale fire hits its policyholders.