CoreLogic wildfire mitigation score: what it means for you

Last updated 2026-07-25

What is the CoreLogic wildfire mitigation score?

The CoreLogic wildfire mitigation score is a proprietary risk analytics product that insurance carriers buy and plug into their underwriting software to estimate how likely a specific property is to survive a wildfire, or to make a claim in one. CoreLogic is a private data and analytics company that sells property risk scores to insurers, mortgage lenders, and government agencies; it is not a government body and it does not set insurance rates by itself. The company's public materials describe combining parcel-level wildfire hazard data (terrain, vegetation, weather patterns) with structural and defensible-space characteristics pulled from aerial imagery, property records, and sometimes on-site inspection data. CoreLogic states its Wildfire Risk Score product is built to give insurers 'a more precise, address-level view of wildfire risk' than county-level hazard maps alone ^[1]. Here's the frustrating part for homeowners: you generally can't pull up your own CoreLogic score online the way you'd check a credit score. Some insurers will share the general risk tier or the reason codes behind a non-renewal, but the underlying number and its full methodology stay inside the carrier's underwriting system. That opacity is exactly why documentation matters so much, which we get into below. If you got a non-renewal or inspection letter citing 'wildfire risk score' or 'defensible space score,' it's very likely tied to a CoreLogic product or a similar one from a competitor like Zesty.ai or Verisk. The fix isn't arguing with the number. It's fixing the property and proving it.

What factors go into a wildfire mitigation score?

Most wildfire risk scoring models, including CoreLogic's, weigh three categories: the surrounding landscape risk, the structure's ignition resistance, and the immediate defensible space around the home. None of the major vendors publish their exact weighting formula, so what follows is drawn from CoreLogic's own product descriptions and from the defensible space standards that these models are built to reflect. Landscape-level risk includes slope, aspect (south and west-facing slopes dry out faster and burn hotter), vegetation type and density, and historical fire occurrence in the area. This part of the score is largely out of a homeowner's control; you can't move your house off a ridge line. Structural risk looks at roof covering material, whether vents are ember-resistant, siding material, deck construction, and the presence of double-pane or tempered windows. California's Chapter 7A of the California Building Code sets the ignition-resistant construction standard for new construction and remodels in the state's Wildland-Urban Interface Fire Areas, covering things like ember-resistant vents, Class A roofing, and non-combustible siding within the first several inches above grade. Defensible space risk covers the 100 feet around the structure (or to the property line), broken into CAL FIRE's Zone 0 (0-5 feet), Zone 1 (5-30 feet), and Zone 2 (30-100 feet), each with different clearance and spacing rules ^[2]. A property with dead vegetation touching the siding, wood mulch against the foundation, or overhanging tree limbs over the roof scores worse in every model, because that's what actually carries embers and flame contact into the structure during real fires, according to post-fire damage assessments CAL FIRE and the Insurance Institute for Business & Home Safety have published for years. For a detailed walkthrough of the zone-by-zone clearance rules, see our defensible space zones guide.

Why did I get a non-renewal letter citing a wildfire score?

Insurers use these scores to sort properties into risk tiers, and properties above a certain threshold get flagged for non-renewal, a rate increase, or a mandatory inspection. The letter you got probably didn't name CoreLogic specifically; it more likely cited 'wildfire risk assessment' or 'brush/vegetation clearance' as the reason. California regulates some of this. Under California Insurance Code Section 675.1 and related FAIR Plan rules, insurers must give homeowners at least 75 days notice before non-renewing a policy for wildfire risk in most cases, and the state maintains a moratorium program: after a declared wildfire disaster, insurers can't non-renew policies within the affected zip codes for one year under Senate Bill 824 provisions implemented by the California Department of Insurance ^[3]. The California Department of Insurance also runs the Safer from Wildfires program, which requires participating insurers to give discounts or otherwise recognize mitigation actions that meet standards jointly developed with the State Fire Marshal, CAL FIRE, and the Department of Insurance, covering home hardening and defensible space actions ^[4]. That's a genuinely useful lever: if your insurer participates, documented mitigation can move the needle on price and sometimes on renewal eligibility, even though the underlying CoreLogic-style score itself isn't something you can directly edit. Colorado, Oregon, and Arizona don't have identical statutory frameworks, but all three have seen insurers pull back from wildfire-prone zip codes over the past few years, and all three states have some version of a FAIR Plan or last-resort insurer for homeowners who get dropped.

How can homeowners improve their wildfire mitigation score?

You can't see the score, but you can address every input that feeds it, and you should document each one as you go. Start with Zone 0, the 0-5 foot zone around your foundation, deck, and any attached structures. California's Zone 0 ember-resistant zone requirements (developed under Assembly Bill 3074) call for removing combustible mulch, dead vegetation, and stored items from that zone ^[2]. Next, check your roof, vents, and gutters. Clogged gutters full of dry leaves are one of the most common ignition points in WUI fires; clean them before fire season and consider metal gutter guards. If your vents aren't ember-resistant (marked to WUI standards, typically 1/8 inch mesh or listed ember-resistant vents), that's a real upgrade worth making, usually a few hundred dollars per vent installed depending on your market. Then work outward through Zone 1 (5-30 feet) and Zone 2 (30-100 feet), thinning vegetation, spacing tree canopies, and removing ladder fuels (shrubs and low branches that let ground fire climb into tree crowns). Our fire safe landscaping guide covers plant spacing and species selection in detail. Take dated photos before and after every round of work. Keep receipts for tree removal, roof or vent replacement, and any professional defensible space assessment. This is the single most useful thing you can do regardless of what any proprietary score says, because when you appeal a non-renewal or apply for a Safer from Wildfires discount, you need your own evidence file, not a hope that the insurer's algorithm noticed the work.

When does the California defensible space law go into effect?

California's core defensible space requirement, 100 feet of clearance under Public Resources Code Section 4291, has been in effect for years and applies statewide in State Responsibility Areas and many local jurisdictions that have adopted it. The newer piece homeowners are asking about is Zone 0, the ember-resistant zone within 5 feet of structures. Zone 0 was authorized by Assembly Bill 3074 (2020), which directed the Board of Forestry and Fire Protection to develop regulations for this ember-resistant zone. As of this writing, the Board has been through multiple rulemaking rounds, and CAL FIRE's own program page states the regulation is still moving through the formal rulemaking process, with an effective date that has been pushed back from earlier projections ^[5]. Homeowners should check CAL FIRE's defensible space page directly for the current status rather than relying on a fixed date, because this timeline has already shifted more than once. In the meantime, CAL FIRE recommends homeowners voluntarily start Zone 0 work now: hardscape, gravel, or non-combustible groundcover directly against the foundation, no mulch or bark within 5 feet, and no combustible fencing or furniture touching the house ^[2]. Insurers and their scoring models increasingly look for evidence of Zone 0 compliance even before it's mandatory, since it's one of the highest-value changes you can make for ember survivability.

What fire safe home rules take effect in 2026?

This is a guided fill-in area, because requirements differ significantly by fire district, county, and whether you're in a State Responsibility Area versus a Local Responsibility Area. Rather than guess at a single statewide 2026 rule that doesn't exist yet, here's how to find your actual answer: [Your fire district / county name]: Check with your local fire department or county planning department for any local WUI ordinance updates scheduled for 2026, since many counties adopt stricter versions of the state minimum. California Zone 0 regulation: The Board of Forestry and Fire Protection's rulemaking for the ember-resistant zone has been under development for several years; confirm current status and any compliance deadline directly on CAL FIRE's defensible space program page before assuming an effective date ^[5]. Chapter 7A updates: The California Building Standards Commission updates the Building Code, including Chapter 7A wildfire construction standards, on a three-year cycle; the next code cycle after 2025 lands in 2028, so check whether your jurisdiction has adopted any local amendments sooner. Oregon, Colorado, Arizona: None of these states currently has a statewide Zone 0-style ember zone mandate comparable to California's, but Oregon's Senate Bill 762 created a statewide wildfire risk map and defensible space code framework administered through the Oregon Department of Forestry; check that agency's wildfire program page for your county's current requirements. The honest answer is that '2026 rules' depends entirely on your address. Don't take a general blog claim as your compliance deadline; call your local fire marshal's office.

Why won't people follow the defensible space law in California?

Compliance with California's 100-foot defensible space law is inconsistent, and the reasons aren't usually stubbornness, they're cost, labor, and confusion about the rules. A CAL FIRE inspection report cited in coverage of the program has repeatedly found compliance rates well under 100% in many surveyed communities, with common failures being overgrown brush near structures and dead vegetation not removed. Cost is the biggest barrier for a lot of homeowners. Clearing steep, brush-heavy lots can run into the thousands of dollars if you're hiring a crew, and elderly or disabled homeowners often can't physically do the work themselves. Some counties and nonprofits run chipper day programs or cost-share grants to help, but availability is spotty and often oversubscribed. Confusion matters too. Homeowners get mixed messages between HOA landscaping rules, local tree ordinances that restrict removal, and state defensible space rules, and sometimes those requirements genuinely conflict (an HOA wants a hedge for privacy where the state wants clearance). Renters and lower-income homeowners in wildfire zones often don't own the trees or slopes that need work, or don't have the standing to act on a neighbor's overgrown lot even though embers don't respect property lines. And frankly, some people just don't believe it will happen to them until it does. That's a documented pattern in wildfire risk perception research broadly, not unique to California, but it compounds with the cost and confusion problems to keep compliance rates lower than fire officials want.

How to prevent wildfires and forest fires

Most wildfires in the US are human-caused, not lightning-caused, which means prevention is mostly about controlling ignition sources near vegetation. The National Interagency Fire Center and USDA Forest Service research both point to debris burning, equipment use (mowers, chainsaws, off-road vehicles), unattended campfires, and downed power lines as the recurring top causes of human-caused wildfires. At the individual level: never burn debris on windy or dry days, and check local burn permit requirements, since many counties suspend burning entirely during fire season. Fully extinguish campfires (drown, stir, drown again) rather than assuming they're out. Keep mower blades and chainsaws away from dry grass during peak afternoon heat, since a single spark from metal-on-rock contact can ignite a fire in seconds under the right conditions. At the property level, defensible space work (discussed above) doesn't just protect your house, it slows a fire's ability to spread from lot to lot in a neighborhood, which makes it a form of community-level prevention as much as personal protection. CAL FIRE's 'One Less Spark' campaign specifically targets equipment-caused ignitions with practical rules like avoiding driving on dry grass and carrying a fire extinguisher on ATVs. Ready.gov's wildfire preparedness guidance also emphasizes reporting unattended fires and downed lines immediately rather than assuming someone else will, since early detection is one of the few variables that meaningfully changes fire size outcomes ^[6].

How to prepare for a wildfire before it starts

Preparation splits into three buckets: the property, the evacuation plan, and the documentation you'll need if things go wrong. Most people only think about the first one. For the property, do the defensible space and hardening work covered earlier in this article, and do it before fire season starts in your region, not during a red flag warning. Ready.gov recommends assembling a go-bag with water, medications, important documents, and a battery radio, and having it ready well before an evacuation order, since wildfire evacuations can happen with very little notice compared to hurricanes ^[6]. For the evacuation plan, know at least two routes out of your neighborhood, since a single-exit road is one of the deadliest patterns in fast-moving wildfires, as documented in post-incident reports on fires like the 2018 Camp Fire in Paradise, California. Sign up for your county's emergency alert system; many counties use Nixle, CodeRED, or Genasys Protect, and none of them work if you never register your phone number. For documentation, this is where a lot of homeowners get caught flat-footed after a fire or a non-renewal. Photograph your home's exterior, roof, vents, and the full 100-foot defensible space perimeter, dated and organized, before anything happens. If you ever need to appeal an insurance decision or file a claim, you'll want a clear paper trail showing what mitigation existed and when. This is exactly the gap our $99 Wildfire Insurance Survival Kit is built to close: a structured way to document your property, your mitigation work, and your policy details in one place before you need it, at /survival-kit-builder. We don't file claims or contact your insurer on your behalf; you send your own documentation, but you'll have it organized and ready.

Is Santa Barbara safe from fire?

No coastal California community is 'safe' from wildfire in an absolute sense, and Santa Barbara County has a documented history of major fires, including the 1990 Painted Cave Fire and the 2017 Thomas Fire, which at the time was the largest wildfire in modern California history by acreage before being surpassed by later fires . The Thomas Fire also triggered the January 2018 Montecito debris flow, which killed 23 people, a reminder that wildfire risk in this region compounds with post-fire mudslide risk on steep, burned slopes. Santa Barbara's risk comes from a specific combination: steep terrain, chaparral vegetation that's adapted to burn, and strong offshore Santa Ana-type wind events (sometimes called sundowner winds locally) that can push fire rapidly toward the coast. CAL FIRE's Fire Hazard Severity Zone maps classify significant portions of the hills above Santa Barbara and Montecito as Very High severity zones . That doesn't mean every property in the area carries the same risk. A home in a Very High zone with mature, well-maintained defensible space, an ember-resistant roof, and Zone 0 clearance is genuinely safer than an identical home with brush touching the siding, even in the same fire. Check your specific parcel's hazard zone designation on CAL FIRE's FHSZ viewer rather than relying on the city's general reputation, since risk varies block by block in hillside communities like this.

How does the score affect insurance in CA, CO, OR, and AZ?

California	Cal. Ins. Code 675.1, SB 824 moratorium	75 days (wildfire-specific cases) [3]	Safer from Wildfires (CDI) [4]
Colorado	Division of Insurance wildfire rules	Varies by policy type; check DORA bulletins	Colorado has explored mitigation credit requirements via legislation
Oregon	SB 762 wildfire risk map framework	Standard policy notice rules apply	Oregon Dept. of Forestry defensible space code
Arizona	Standard state insurance code	Standard policy notice rules apply	No statewide mandated discount program as of this writing	California has the most developed regulatory response to wildfire non-renewals, largely because it has the most FAIR Plan volume of any of these states. If you're in Colorado, Oregon, or Arizona and got dropped, your state's Department of Insurance consumer division is the right first call, not a general insurance blog, since the actual notice periods and appeal rights differ by policy type and state.

Each state handles wildfire underwriting differently, and homeowners moving between states (or comparing notes with family elsewhere) often assume the rules transfer, which they don't. | State | Key regulatory tool | Non-renewal notice period | Mitigation discount program |

What should I do first after a non-renewal or inspection letter?

Read the letter carefully for the specific reason cited, more than 'wildfire risk,' since carriers are often required to give a more specific basis, and that specific basis tells you exactly what to fix first. If it mentions vegetation clearance, defensible space is your priority. If it mentions roof or vent condition, structural hardening comes first. Call your state's Department of Insurance consumer hotline before you call your agent, since the state office can tell you your actual notice period and appeal rights, which your agent's script may not cover. In California, the Department of Insurance's consumer hotline handles exactly this kind of non-renewal question. Start your mitigation work in the order the scoring inputs suggest matter most: Zone 0 first (cheapest, biggest impact on ember survivability), then vents and gutters, then Zone 1 and Zone 2 vegetation management. Document everything as you go, dated photos and receipts, because you'll likely need to submit evidence of completed work to qualify for any mitigation discount program or to support an appeal. If your policy still lapses, look into your state's FAIR Plan immediately rather than going without coverage, and keep shopping the standard market every renewal cycle since carriers' wildfire risk appetite changes as they update their own scoring models.

Frequently asked questions

When does the California defensible space law go into effect?

The core 100-foot defensible space requirement under Public Resources Code Section 4291 has applied for years already. The newer Zone 0 ember-resistant zone rule, authorized by AB 3074, is still moving through Board of Forestry rulemaking as of this writing; check CAL FIRE's defensible space page for the current effective date rather than assuming a fixed year.

Why won't people follow the defensible space law in California?

Mostly cost, physical ability, and confusion, not defiance. Clearing steep or brush-heavy lots can cost thousands of dollars, elderly and disabled homeowners often can't do it themselves, and rules sometimes conflict with HOA landscaping requirements or local tree ordinances, which leaves compliance rates below what fire officials want in many surveyed communities.

How to prevent wildfires?

Most wildfires are human-caused, so prevention centers on controlling ignition sources: never burn debris on dry or windy days, fully extinguish campfires, keep equipment like mowers and chainsaws off dry grass during peak heat, and maintain defensible space around your home so any nearby ignition can't spread to your structure.

How do I prepare for a wildfire?

Complete defensible space and home hardening work before fire season, assemble a go-bag with documents, medications, and water, know at least two evacuation routes, and register for your county's emergency alert system. Photograph your property's exterior and perimeter now so you have dated documentation if you ever need it.

How can we prevent forest fires as a community?

Community-level prevention combines individual defensible space work (since embers don't respect property lines), local burn permit compliance, reporting unattended fires or downed power lines immediately, and supporting coordinated fuel reduction projects on shared or adjacent public land through your local fire safe council.

What fire safe rules for homes take effect in 2026?

There's no single nationwide 2026 rule; requirements vary by state, county, and fire district. Check CAL FIRE's Zone 0 rulemaking status if you're in California, your county planning department for local WUI ordinance updates, and your state forestry agency if you're in Oregon, Colorado, or Arizona.

Is Santa Barbara safe from fire?

No coastal California community is fully safe from wildfire. Santa Barbara County has significant Very High Fire Hazard Severity Zones per CAL FIRE mapping and a history of major fires, including the 2017 Thomas Fire. Risk varies block by block based on defensible space and construction, so check your specific parcel's hazard zone.

What is the CoreLogic wildfire mitigation score used for?

Insurance carriers buy CoreLogic's wildfire risk products and plug them into underwriting software to estimate a property's likelihood of wildfire damage or claims. The score influences non-renewal decisions, premium pricing, and sometimes mandatory inspection requirements, though CoreLogic doesn't publish the exact formula or make it directly viewable to homeowners.

Can I see or dispute my CoreLogic wildfire score?

Generally no, not directly. CoreLogic sells the score to insurers, not consumers, so there's no public consumer portal like a credit score check. Some insurers will share the general reason for a non-renewal, but not the underlying score. Your best move is documenting completed mitigation work rather than trying to contest the number itself.

Does defensible space actually lower my CoreLogic score or insurance risk tier?

It should, since defensible space and structural hardening are core inputs across CoreLogic and competitor models like Zesty.ai, and are the same factors CAL FIRE and IBHS post-fire studies link to structure survival. There's no public before/after score data from CoreLogic itself, so you can't verify the exact point impact, but the underlying risk genuinely drops.

What's the difference between CoreLogic's score and CAL FIRE's Fire Hazard Severity Zone?

CAL FIRE's Fire Hazard Severity Zone is a public, government-produced map based on terrain, vegetation, and fire weather modeling, used for building code and disclosure purposes. CoreLogic's score is a private, proprietary insurance underwriting product that also factors in structure-specific and defensible-space data, and it isn't publicly viewable.

How much does defensible space clearing cost?

Costs vary widely by lot size, slope, and vegetation density; brush-heavy or steep lots requiring professional crews can run into the thousands of dollars, while smaller, flatter lots with routine maintenance may cost a few hundred dollars per season. Some counties and fire safe councils offer chipper programs or cost-share grants that reduce out-of-pocket cost.

Sources

1. California Building Standards Commission, California Building Code Chapter 7A: Chapter 7A sets ignition-resistant construction standards for Wildland-Urban Interface Fire Areas
2. California Department of Insurance, Bulletin 2020-9 / Wildfire non-renewal moratorium: One-year non-renewal moratorium for policies in declared wildfire disaster zip codes
3. California Department of Insurance, Safer from Wildfires program: Participating insurers must recognize wildfire mitigation actions through discounts under jointly developed standards
4. California Public Resources Code Section 4291: Statutory basis for the 100-foot defensible space clearance requirement
5. CAL FIRE, One Less Spark wildfire prevention campaign: Equipment-caused ignitions from mowers, chainsaws, and vehicles are targeted by CAL FIRE prevention messaging
6. CAL FIRE, Fire Hazard Severity Zone Viewer: Significant portions of the hills above Santa Barbara and Montecito are mapped as Very High Fire Hazard Severity Zones