Underwriting Habitational Risk in a Turning Market: CAT, Valuation, Deductibles, and Florida as the Stress Test

This is a working overview of how habitational and multifamily property risk gets underwritten right now: residential-occupancy buildings of five or more units, plus the general-liability exposure that rides along with them. It looks at risk selection, catastrophe modeling, valuation and insurance-to-value, deductible and policy structure across ISO commercial property and CGL forms and in the E&S market, and where we sit in the property cycle. The frame is countrywide, with Florida as the stress-test case, because Florida breaks first and recovers in public.

The one thing to hold onto: the broader property-cat market turned in 2025. Reinsurance rate-on-line and primary commercial property pricing both fell for the first time since 2017. Habitational didn't get the memo. It remains one of the hardest classes to place in the country, and the reasons have less to do with hurricanes than with water and with juries.

Written for coverage counsel, underwriters, and claims people. Not legal advice, and not a treatment of one-to-four-unit dwelling fire, landlord business, workers' comp, or auto. Individual figures carry their own source dates; the market picture is as of June 2026.

The short version

Habitational is about as hard as commercial property gets. Something like 30% to 40% of new placement now goes to E&S, up from under 15% a decade ago on one broker's read, and the driver isn't named storms. It's relentless water-damage frequency on aging apartment stock, plus liability claims juiced by social inflation. If you're writing this book, your job is to defend valuation, structure CAT and water deductibles with teeth, and underwrite the liability exposure (assault and battery, habitability, negligent security) as hard as the property.

Source: One broker's read. Treat as an informed estimate, not audited data.

Florida is the case study everyone watches. After a litigation-driven crisis and a string of insolvencies, the December 2022 SB 2-A reforms (which killed one-way attorney fees and post-loss AOB), together with the 2023 tort package, flipped the market. Personal-property insurers posted their first underwriting profit in eight years in 2024, at a 93.1 combined ratio. Citizens has shrunk from its 1.42 million-policy peak in October 2023 to 293,772 by May 31, 2026, the lowest on record. Seventeen carriers entered, and the market absorbed the Helene and Milton double landfall in 2024 without a new insolvency.

The cycle has turned, but unevenly. Guy Carpenter's global property-cat rate-on-line index fell 6.6% at 1/1/2025 and another 12% at 1/1/2026, and it still sits more than 38% above the 2017 soft-market floor. CIAB commercial property pricing went slightly negative in Q3 2025, the first decrease since 2017. Rate relief is real. It just hasn't reached habitational the way it's reached cleaner classes, and discipline on ITV, secondary perils, and liability is what separates a profitable book from a painful one.

What the data says

Selection is construction-led and data-rich.

You rate habitational on composite rate per $100 of TIV, then adjust for ISO construction class, year built, roof age and geometry, stories, occupancy mix, and how well the place is run. The spread is enormous. Pricing runs 5x to 10x by class, from roughly $0.20 per $100 of TIV for newer non-CAT masonry to $4.00 or more for CAT-zone frame. The old red flags still kill deals: aluminum wiring, polybutylene and cast-iron plumbing, FPE, Zinsco and Stab-Lok panels, deferred maintenance, prior water, and crime exposure. A HUD REAC score below about 60 will usually trigger non-renewal or a load.

Water, not catastrophe, is the number-one attritional loss.

What's actually driving admitted carriers out is water-damage frequency on an apartment stock whose median building age runs past 40 years. You see it in the coverage architecture: separate water deductibles of $50,000 or $100,000 sitting alongside a $25,000 AOP, water sublimits on older buildings or anything with a prior loss, and coverage made contingent on documented plumbing upgrades.

Liability is its own hard market.

Assault-and-battery exclusions are now standard in habitational CGL. The A&B language usually swallows weapon incidents even without a separate firearms exclusion, and negligent-security and "failure to provide a safe environment" theories get excluded even when they're dressed up as ordinary negligence. Where A&B is offered at all, it comes heavily sublimited, with $25,000 to $50,000 typical, sometimes inclusive of defense. Nuclear verdicts are pushing severity. Verisk's July 2025 ISO General Liability multistate filing, effective January 1, 2026, adds endorsements for human trafficking, generative AI, and more A&B underwriting flexibility.

CAT modeling is the technical core of pricing and capacity.

Underwriters run Moody's RMS, Verisk (the old AIR), and CoreLogic to build AAL and EP curves; PML at the 1-in-100 and 1-in-250, plus OEP versus AEP, drives pricing, capacity, and reinsurance buying. Verisk's September 2025 report put the global modeled insured AAL at $152 billion, a 25% jump, with frequency and secondary perils (severe convective storm, winter storm, wildfire, inland flood) now $98 billion of that. As Verisk's Rob Newbold put it, natural-cat losses have stopped being statistical anomalies and become the baseline.

Source: Verisk, 2025 Global Modeled Catastrophe Losses Report (Sept. 2, 2025).

ITV is garbage-in, garbage-out for both premium and the model.

Post-COVID construction inflation left a large share of commercial property underinsured, and undervaluation doesn't just shortchange premium. It corrupts the model output, because the model sizes damage off the replacement values you feed it. Carriers are pushing back with valuation tools and with policy devices that hand the undervaluation risk back to the insured.

Structure has tightened, and it's sticking.

Margin clauses, occurrence limit of liability endorsements, agreed-value with signed statements of value, percentage-based named-storm and wind/hail deductibles, ACV roof endorsements and roof payment schedules are all standard now, and most are surviving into the softening market because carriers are trading rate for terms rather than giving back both.

Florida turned. It isn't fixed.

Structurally the reforms worked: personal-insurance litigation fell 23% between 2023 and 2024 and nearly 25% in the first half of 2025, down 36% since 2021. Profit came back, Citizens depopulated hard, and the private market took Helene and Milton without a new failure. But Florida is still uniquely reinsurance-dependent. Active insurers ran a 519% reinsurance-dependency ratio against a 62% U.S. composite, the condo and HOA segment is under real stress from post-Surfside reserve and milestone law, and a lot of the new capacity is thinly capitalized and Demotech-rated.

The detail

1. Risk selection and submission evaluation

Habitational is the commercial property and liability category for residential-occupancy buildings of five units and up: apartments of every flavor (garden, mid-rise, high-rise; market-rate, affordable, LIHTC), condo associations under master policies (wall-in and wall-out), student housing, senior and assisted living, military housing, dorms and Greek houses, and SROs. The five-unit line is what separates commercial habitational from one-to-four dwelling fire and landlord business. Carriers staff it with dedicated teams and treaties because its loss profile is its own animal: water frequency, fair-housing exposure, habitability, and tenant-driven liability.

Construction class is the foundation of the rate. ISO runs classes 1 through 6 (frame, joisted masonry, non-combustible, masonry non-combustible, modified fire-resistive, fire-resistive), and everything else stacks on top: year built; roof age, covering, and geometry (hip beats gable, tile and metal beat asphalt shingle); stories; tenant mix; and pride of ownership. Price is composite rate per $100 of TIV, and TIV, not unit count, is the input that matters. One broker's 2026 benchmarks give you the shape of it: newer non-CAT masonry at $0.20 to $0.40 per $100 ($250 to $500 a unit), older non-CAT frame at $0.60 to $1.20 ($700 to $1,500), and CAT-zone frame at $1.50 to $4.00 or more ($1,500 to $4,000-plus).

Source: Single-broker 2026 benchmark; CAT-zone frame can exceed $4.00. Informed estimate, not audited.

Plenty of things drive scrutiny, surcharge, or a decline: aluminum branch wiring; polybutylene and cast-iron plumbing; FPE, Zinsco, and Stab-Lok panels; flat roofs; deferred maintenance; a bad loss run; high-crime and assault exposure; and tough occupancies like some Section 8, student, and low-income housing. Lender and regulatory overlays sit on top. Fannie, Freddie, DUS, HUD (FHA 221(d)(4) and 223(f)), and the life companies all impose replacement-cost, lost-rents, GL, umbrella, and carrier-rating minimums. And a HUD REAC score under about 60 will usually cost the account its renewal.

Water leads the attritional losses (more on that below). Fire, slip-and-fall and habitability liability, assault and negligent security, and freeze-and-burst round out the picture. Keep the ISO vacancy provision in mind: a building counts as vacant once less than 31% of its square footage has been occupied for 60 straight days, and at that point water-damage and certain other coverages drop out.

2. Catastrophe exposure and CAT modeling

A cat model simulates tens of thousands of years of events to produce two things you live by. The first is AAL, average annual loss: the mean, additive across a portfolio, the area under the EP curve. The second is the exceedance-probability curve itself, your PML at a given return period. A 1-in-100 loss is a 1% annual exceedance probability; a 1-in-250 is 0.4%. OEP, the chance any single event clears a threshold in a year, drives per-occurrence programs, while AEP captures total annual loss and drives aggregate covers, and the two pull apart as the odds of multiple events in one year rise. Convention runs 10,000 simulated years for tornado, hail, and winter storm, 50,000 for tropical cyclone, and up to 100,000 for quake.

That output runs the business end to end: rate level and territory relativities, portfolio optimization, selection, loss mitigation, cost-of-capital and reinsurance allocation, and the rating agencies' capital-adequacy view. The big three (RMS, Verisk, CoreLogic) often get blended. The Florida Hurricane Catastrophe Fund's actuary, Paragon, splits Verisk, CoreLogic, and RMS at a third each for detailed allocation, and runs 5/20/50/20/5 weights across five models, adding Applied Research Associates, ranked low to high for industry aggregate loss costs.

On the wind side, coastal habitational carries percentage deductibles: named-storm or wind/hail, written as a percentage of TIV or Coverage A rather than flat dollars. Two to five percent is common in Florida Tier 1, and E&S coastal can run to 10%. The trigger wording is where the money is. A named-storm deductible attaches when the NHC or NWS names a system, often from a defined window before naming through 24 to 72 hours after the downgrade, while a straight-line wind event with no named system falls to the usually lower wind/hail deductible. Per-occurrence versus calendar-year application, and buy-downs that convert a percentage to a flat number for extra premium, are the levers you'll be structuring around.

The "secondary" perils aren't secondary anymore. U.S. severe convective storm topped $50 billion in insured loss for the second year running in 2024, and FY2023 plus the first half of 2024 cleared $100 billion combined, the costliest two-year stretch the peril has ever produced. Gallagher Re pegged full-year 2024 SCS at $64 billion, the single costliest peril of the year, with hail doing most of the damage; Dallas and Denver each took a billion-dollar hail event. Verisk counted a 59% rise in billion-dollar SCS events from 2020 to 2024 against the prior five years. Wildfire belongs in the same conversation, along with winter freeze (the Uri precedent) and tornado. The January 2025 Palisades and Eaton fires alone ran roughly $40 billion insured, the costliest events of the first half of 2025. Flood mostly sits outside the standard forms; the NFIP caps residential building coverage at $250,000, which pushes demand into private and excess flood, and Helene drove the NFIP's 2024 loss ratio north of 200%.

3. Valuation and insurance-to-value

The number brokers throw around is that roughly three-quarters of commercial properties are underinsured by 40% or more. Treat it as cited industry lore rather than gospel, but the direction is right, and post-COVID construction inflation widened the gap: materials up more than 10% in 2023, wood and steel up more than 15%, construction wages up around 4.4%. Undervaluation hurts twice: thin premium and a corrupted model, because the model reads damage off the replacement values you give it.

You benchmark against the Marshall and Swift Valuation Service (more than 30,000 component costs across 300 occupancies), plus USPAP appraisals (every three to five years is the recommendation), values-per-square-foot, and inflation-adjusted asset records. Then you reach for the policy devices that move undervaluation risk back onto the insured:

• Coinsurance

  The standard requirements are 80%, 90%, or 100% of replacement value (90% is mandatory on blanket). The penalty runs the did-have-over-should-have formula: limit carried over required limit, times the loss, less the deductible. Carry $600,000 against a required $800,000 (80% of a $1 million value), apply it to a $300,000 loss, net the $50,000 deductible, and you've taken a 25% penalty, a $75,000 haircut. The 100% requirement earns the biggest rate credit, 80% the smallest.

• Agreed value (ISO CP 00 10, Optional Coverage G.1)

  Suspends coinsurance until a stated date in exchange for a signed Statement of Values (CP 16 15). Worth being precise here: it suspends coinsurance and nothing else; your valuation and loss-settlement terms, ACV and depreciation included, still apply. It doesn't auto-renew, and if no new SOV comes in, coinsurance switches back on.

• Margin clause (ISO CP 12 32, in use since 2008)

  Caps the payable at a stated percentage of the value shown for that location on the latest SOV (110% to 125% is common, ISO allows up to 150%, and 120% is the usual landing spot), even under a blanket limit, and never above the blanket limit. It's the industry's answer to systematic blanket undervaluation. The March 2022 Walmart distribution-center fire in Plainfield, Indiana, a total loss north of $500 million, is the case everyone cites; the much lower underwritten values quoted alongside it come from commentary, not a primary filing, so take them as illustrative.

• Occurrence Limit of Liability Endorsement

  More aggressive still. It converts blanket limits into specific per-location limits and caps recovery at the least of the adjusted loss, the SOV value for that location, or the applicable limit. An unreported newly acquired location starts at an insurable value of zero. OLLEs are usually manuscript and have drawn enforceability challenges. A California trial court struck five of them in a $100 million quota-share program for violating the state's "conspicuous, plain and clear" rule, so durability is jurisdiction- and wording-dependent.

• Blanket versus scheduled

  True blanket gives you one limit available across every scheduled location, but in the hard market blanket increasingly carries a margin clause or OLLE that pulls recovery back to SOV values. When coinsurance and a margin clause both sit on a policy, taking one off can expose the other as the real binding constraint. Freddie (Seller/Servicer Guide Ch. 31) and Fannie both want documentation that blanket is "as good as, or better than" a stand-alone policy.

4. Deductible and policy structure

The hard market built a layered deductible stack and it's largely held. You've got AOP applied per location or per occurrence; separate water deductibles and sublimits, frequently $50,000 to $100,000 on habitational; named-storm percentages in the CAT states; and wildfire deductibles of 5% or more of TIV in the California WUI. On roofs, carriers lean on ACV endorsements and roof payment schedules that pay a depreciation-scaled percentage by age (full value when new, dropping toward 30% by 15 years), plus cosmetic exclusions. Verisk's April 2025 roofing report put roof repair and replacement value at nearly $31 billion in 2024, up almost 30% since 2022, with roof line items now more than a quarter of all residential claim value and non-cat wind-and-hail roof claims climbing from 17% to 25% of claims over the same stretch. Most of these terms are persisting into the soft market, because the trade right now is rate for terms, not rate and terms.

5. Florida, the stress-test case

Florida broke under litigation and AOB abuse, one-way attorney fees, roof-claim litigation, social inflation, and outright fraud. The disproportion told the whole story: per APCIA and OIR, in 2019 Florida ran more than 76% of the country's homeowners litigation while filing just 7% of the claims. The insolvencies followed in a wave: Gulfstream in 2021; FedNat, Southern Fidelity, Weston, Lighthouse, Avatar, St. Johns, and Maison in 2022; UPC in 2023. Citizens swelled to 1.42 million policies by October 2023.

SB 76 in 2021 tinkered with the AOB and fee math and wasn't enough. The real reform was SB 2-A, signed in the December 2022 special session: it killed one-way attorney fees in property suits and banned post-loss AOB on residential and commercial policies issued on or after January 1, 2023, while cutting the claim-reporting window to a year and supplemental claims to 18 months. HB 837 and SB 7052 in 2023 layered on the tort and bad-faith work: a rare-and-exceptional standard for fee multipliers, a 90-day safe harbor for tendering limits, a rule that mere negligence isn't bad faith, and good-faith duties running to insureds.

The numbers since have moved the way the reforms intended. Personal-insurance litigation fell 23% from 2023 to 2024 (Q1-to-Q3 suits down 23.8%, from 36,639 to 27,923) and nearly 25% again in the first half of 2025, a 36% drop since 2021. AM Best had active Florida personal-property insurers at a 93.1 combined ratio in 2024, a $206.7 million underwriting gain against a $174.4 million loss the year before, and $492.3 million in pre-tax operating income, the first underwriting profit in eight years. Seventeen carriers came in (Slide, Mainsail, Orange Insurance Exchange, Manatee, Mangrove, Tailrow, Condo Owners Reciprocal Exchange, Stand, Praxis, and others). APCIA reported Florida had the lowest average homeowner rate increase in the country in 2024, around 1%. For 2026, 73 carriers filed decreases and 94 filed flat, and Citizens filed its first personal-lines cut since 2015: a 2.6% statewide average, with three of five policyholders averaging an 11.5% reduction, about $359.

Source: AM Best market-segment report (May 29, 2025).

Citizens has come down steadily off the peak: about 936,000 at the start of 2025, 777,592 by June 20, then 395,144 by January 2, 2026, roughly a 73% cut from the top and the lowest in 14 years, and on to 293,772 by May 31, 2026, with total exposure around $85.9 billion, its lowest on record. (Hurricane season slows the takeouts rather than reversing the trend; they resume in the fall.) Depopulation moved more than 546,000 policies to private carriers in 2025 alone. One October round took about 165,000, led by Slide at 60,186, Manatee at 50,822, HCI and Homeowners Choice at 19,466, Tailrow at 19,199, and Mangrove at 15,691. A policyholder offered private coverage within 20% of the Citizens premium can't stay with Citizens. Its 2025 reinsurance tower was about 87% cat-capital and ILS-funded; the 2024 tower ran $3.564 billion, including $1.6 billion in cat bonds.

Source: Citizens Property Insurance Corp., policies in force.

The structural exposure hasn't gone anywhere. Active Florida insurers carry that 519% reinsurance-dependency ratio against a 62% U.S. composite, and 3.2x direct-premium-to-surplus leverage. The Florida Hurricane Catastrophe Fund (mandatory state reinsurance set up after Andrew in 1993, capped at $17 billion per contract year) projected roughly $6.72 billion in cash plus $3.25 billion in pre-event bonds for 2025 and carved out a $4.6 billion point estimate for Helene plus Milton (a $1.6 billion to $6.2 billion range) on top of obligations still reflecting about $9.5 billion from Ian. The reform-era market is still one major-storm reinsurance retreat away from trouble, and watchdogs keep flagging that many of the new entrants are Demotech-rated and thin. The Wall Street Journal has reported Demotech-rated insurers were far likelier to fail than those rated by the major agencies.

Then 2024 tested all of it. Helene came ashore in the Big Bend as a Category 4 on September 26; Milton hit near Siesta Key as a Category 3 on October 9. Munich Re put Milton around $25 billion insured, the costliest single event of the year, and Helene around $16 billion, with far heavier uninsured and flood losses behind it (Aon estimated only about 5% of Helene's victims carried applicable coverage). Inside Florida, FLOIR logged roughly $5.2 billion in combined payouts across 436,167 claims. The private market took both with no new insolvency, which is the cleanest validation the reform thesis has gotten.

The condo and HOA segment is the open wound. Post-Surfside law (SB 4-D in 2022, SB 154 in 2023, HB 1021 in 2024, HB 913 in 2025) mandates milestone inspections at 30 years (25 in some coastal jurisdictions) and Structural Integrity Reserve Studies for condo and co-op buildings of three or more habitable stories. As of January 1, 2025, covered associations can no longer waive structural reserves. HB 913, effective July 1, 2025, pushed the initial SIRS deadline to December 31, 2025 (or alongside a milestone inspection no later than December 31, 2026), raised the reserve-component threshold from $10,000 to $25,000, opened the door to loans and lines of credit for reserves, and added mandatory insurance appraisals. The fallout is brutal: special assessments have hit $134,000 a unit at The Cricket Club in North Miami and up to $400,000 at Mediterranean Village in Aventura. For the underwriter, condo master policies now get reserve-adequacy and milestone-compliance scrutiny stacked on top of the usual older-coastal-stock CAT exposure.

6. The countrywide cycle

Commercial property hardened hard in 2023 (Marsh had U.S. property up 11% in Q4, CIAB up 20.4% in Q1), then the increases moderated through 2024 (CIAB all-lines up 5.4% in Q4, the 29th straight quarterly increase, with property decelerating inside that). The turn landed in 2025. CIAB's Q3 survey showed commercial property premiums down 0.2% on average, the first decrease since 2017, which CIAB chalked up to a wave of new carriers and MGAs and a far friendlier reinsurance market than 2023. Marsh saw U.S. aggregate commercial pricing fall in Q1 2025 for the first time since 2018, and standard property down as much as 9% by Q3. The industry posted a 97% combined ratio in 2024, its best in a decade, and roughly 99% in Q1 2025 even with the Los Angeles wildfires in the number.

Reinsurance moved the same direction after the 2023 reset, when Guy Carpenter's global property-cat ROL jumped 29.3% with higher attachments and tighter terms. The index fell 6.6% at 1/1/2025, its first decline since 2017, and 12% at 1/1/2026; the U.S. index ran 6.2% and 12%. But rates are still more than 38% above the 2017 floor, attachments stayed high (which is exactly why frequency and secondary-peril losses keep landing on the primaries), dedicated reinsurance capital was tracking toward roughly $660 billion by year-end 2025, and alternative capital cleared a record $120 billion-plus by mid-year. The market-changing loss threshold is now read as somewhere above $150 billion.

Source: Guy Carpenter. The index still sits ~38% above the 2017 soft-market floor.

None of which has rescued habitational. Even in the softening market it's one of the hardest property segments going: roughly 30% to 40% of new placement is E&S, against under 15% a decade ago, and higher in California, Florida, and parts of Texas. The drivers are reinsurance tightening since 1/1/2023, water frequency on stock past 40 years old, the 2017-to-2024 CAT run, and admitted carriers pulling back. The marquee retreat was State Farm General's March 20, 2024 decision to stop writing commercial apartment business in California and non-renew all roughly 42,000 of those policies (plus about 30,000 homeowners and rental dwelling) on a rolling basis from July, just over 2% of its California count. E&S overall reached roughly 9% to 12% of U.S. P&C premium in 2025, nearly double its 2017 share, with first-half surplus-lines premium up 13.2%, even as AM Best moved its E&S outlook to stable from positive on the softening. MGAs, program business, and layered and quota-share placements dominate the large multifamily schedules, with the lender standards riding along on every sub-class.

7. Where it's heading

Parametric is showing up as a supplement, not a replacement. Wind and named-storm products on proxy wind-speed or "cat-in-a-circle" triggers pay fixed or scaled amounts on objective criteria inside about 14 to 30 days, with no adjuster and no deductible, which makes them useful for plugging sublimited or excluded exposure, or for funding the big CAT deductible. Florida, Texas, Alabama, and Miami-Dade have all bought parametric wind. The catch is basis risk: the payout can miss the actual loss, and the New Orleans school district's 2024 cover didn't pay when Hurricane Francine came in under the 100-mph trigger. Cat bonds and ILS, on parametric, indemnity, or index triggers, are now structural to Florida, and Citizens' tower leans heavily on them.

Geospatial and AI underwriting is moving into the platform. Carriers are wiring aerial imagery and AI roof-condition scoring straight into underwriting workflows. One major national carrier folded AI roof scoring into its U.S. middle-market platform in October 2025, Verisk offers a Roof Condition Score built partly off aerial imagery, and computer-vision vendors are flagging roof condition, deferred maintenance, defensible space, and hazards. It buys efficiency and raises regulatory questions in the same breath (the NAIC AI model bulletin and state aerial-imagery bulletins). Lockton Re notes that portfolios feeding in secondary data, such as roof type, defensible space, and mitigation, can cut modeled wildfire losses by more than 20%.

On climate, the model assumptions keep moving. Verisk's $152 billion modeled global insured AAL, with frequency perils now two-thirds of it at $98 billion, and Gallagher Re's "new normal" of roughly $150 billion in annual average loss across 2017 to 2024, both point the same way. 2025 was the sixth straight year above $100 billion in insured nat-cat loss, at $107 billion per Swiss Re. The takeaway for the desk is simple: price SCS, wildfire, and winter storm as primary modeled perils, because that's what they are now.

Mitigation is increasingly where the risk improvement lives. Florida statutorily mandates wind-mitigation credits (Fla. Stat. 627.0629) for documented features, including hip roofs, impact-rated openings, reinforced roof-to-wall connections, sealed roof decks, and secondary water resistance, applied to the windstorm portion of premium, which can be 30% to 70% of the bill on coastal homes, documented on form OIR-B1-1802 (revised effective April 1, 2026, off a 2024 Applied Research Associates wind-loss study). The My Safe Florida Home program added $280 million in 2025 for mitigation grants, and FORTIFIED roofs and Class 4 impact-resistant roofing earn credits in multiple states. On habitational, these are the levers that turn a marginal risk into a writable one.

What to actually do

In the renewal cycle:

1. Make ITV the first gate, not the last.

   Require an updated USPAP-grade valuation or a Marshall and Swift benchmark on every submission, and default to agreed value with a signed SOV plus a margin clause (120% is the market) or an OLLE on blanket schedules. Undervaluation poisons the premium and the model both, so fix it before you quote, not after.

2. Structure water like it's the main event, because it is.

   On anything 30-plus years old or with prior water, put on a separate water deductible ($50,000 to $100,000) and/or a sublimit, and condition the coverage on documented plumbing upgrades and leak-detection. Water frequency, not wind, is what grinds down the habitational loss ratio.

3. Underwrite the liability as hard as the property.

   Confirm your A&B exclusions and sublimits, look hard at crime scores and security practices, and price negligent-security and habitability exposure explicitly. With social inflation where it is, assume there's no safe attachment point on the excess.

On CAT-exposed and Florida business:

1. Hold the line on deductibles and terms even as rate softens.

   Reinsurance ROL is down double digits and primary property has tipped negative, but attachments are still high and the frequency losses are sitting with the primaries. Give back rate before terms: keep the percentage named-storm deductibles, the ACV and RPS roof settlement, and the cosmetic exclusions on aging coastal stock.

2. In Florida, sort by reform-era data and carrier security.

   Favor the risks benefiting from the litigation decline and from wind mitigation (the OIR-B1-1802 credits), but vet your assuming and fronting carriers carefully given the Demotech concerns and that 519% dependency. On condos, demand milestone and SIRS compliance and real reserves; an underfunded, non-compliant association is a deferred-maintenance and assessment-shock problem waiting to land on you.

3. Use the geospatial tools and pay for mitigation.

   Run aerial roof scoring to triage submissions and catch deferred maintenance, and reward FORTIFIED and Class 4 roofs and wind-mitigation features with credit to pull in and keep the best-engineered risks.

The things that would change the strategy:

• A single insured CAT loss above roughly $150 billion, or three $25 billion named storms, would likely stop the softening and re-harden CAT property and reinsurance. Revert to hard-market terms discipline if it happens.
• A Florida legislative rollback, restoring one-way attorney fees through something like SB 554 or HB 1551, would put the litigation incentive back. Monitor it and re-rate Florida liability and LAE assumptions if it passes.
• A Citizens depopulation reversal, with the count rising structurally rather than seasonally, would signal private-market retreat and a return of residual-market risk.

Caveats worth keeping in front of you

Forward pricing is a forecast, not a fact. The reinsurance and primary softening through 2026 is real but contingent on benign CAT activity, and several sources hedge it explicitly ("loss activity allowing"). The 2026 hurricane outlook leans below-average to near-normal per some forecasters, which is a guess about the weather, nothing more.

Some of the statistics here are secondhand or move by source. The "75% underinsured by 40% or more" and "70% undervalued, around 30% average" figures trace to broker commentary citing older studies (including a 1999 Marshall and Swift study) and should be read as cited industry numbers, not independently verified ones. Margin-clause ranges vary by source (110% to 125% common against ISO's 110% to 150% allowable). Helene and Milton loss estimates run all over the place by modeler: $16 billion to $25 billion at Munich Re; KCC at $36 billion for Milton and $6.4 billion for Helene; Verisk and Fitch in the $30 billion to $50 billion range for Milton.

OLLE enforceability turns on jurisdiction and wording. The California decision striking the OLL endorsements is a trial-court ruling, not binding nationally.

Several of the habitational market-share points, the 30% to 40% E&S figure and the $0.20 to $4.00 pricing ladder, come from a single broker. Treat them as informed estimates, not audited data.

And Florida's recovery has its critics. Consumer advocates and some ratings analysts argue the reforms pushed cost onto policyholders and that denial rates climbed (Weiss Ratings says 14 insurers closed more than half their homeowner claims without payment in 2024), and the stabilization story is largely sourced from industry and regulators. The turnaround's durability rides on continued benign storms and no legislative rollback.

Sources

Primary sources (regulators, official data, statutes, index and model providers):

• Citizens Property Insurance Corporation, Policies in Force: https://www.citizensfla.com/policies-in-force
• Citizens, Policies in Force as of May 31, 2026 (293,772): https://www.citizensfla.com/-/20260531-policies-in-force
• Citizens, "Citizens Recommends Rate Cuts for Most Policyholders" (Dec. 10, 2025): https://www.citizensfla.com/-/20251210-citizens-recommends-rate-cuts-for-most-policyholders
• Citizens, "The Florida Insurance Market Is Strong" (June 25, 2025): https://www.citizensfla.com/-/20250625-citizens-ceo-the-florida-insurance-market-is-strong
• AM Best, "Florida's Property Insurance Market Showing Stabilization; Turns First Underwriting Profit in Eight Years" (May 29, 2025): https://www.businesswire.com/news/home/20250529200355/en/Bests-Market-Segment-Report-Floridas-Property-Insurance-Market-Showing-Stabilization-Turns-First-Underwriting-Profit-in-Eight-Years
• Florida Senate, CS/CS/HB 913 (2025) Bill Summary: https://www.flsenate.gov/Committees/BillSummaries/2025/html/913
• Florida DBPR, Division of Condominiums, Milestone Inspections and SIRS: https://condos.myfloridalicense.com/inspections/
• Florida OIR, Wind Mitigation Resources (OIR-B1-1802 effective Apr. 1, 2026): https://floir.gov/consumers/wind-mitigation-resources
• Florida Administrative Register, Rule 69O-170.0155 amendment incorporating OIR-B1-1802: https://flrules.elaws.us/far/notice/30104258
• Guy Carpenter, Global Property Catastrophe Rate-On-Line Index (Jan. 1, 2026): https://www.guycarp.com/content/dam/guycarp-rebrand/insights-images/renewal-hub/2026Renewals/GlobalPropertyCatastropheRateonLineIndex.pdf
• Verisk, "2025 Global Modeled Catastrophe Losses Report" ($152B AAL; Sept. 2, 2025): https://www.verisk.com/company/newsroom/$152-billion-and-rising-new-report-shows-insurance-industry-facing-growing-average-annual-losses-from-natural-catastrophes/
• Swiss Re Institute, "2025 marks sixth year insured natural catastrophe losses exceed USD 100 billion" (Dec. 16, 2025): https://www.swissre.com/press-release/2025-marks-sixth-year-insured-natural-catastrophe-losses-exceed-USD-100-billion-finds-Swiss-Re-Institute/f710c271-58c8-4c48-9004-05203634d1e0
• The Council of Insurance Agents and Brokers, Q3 2025 P/C Market Survey: https://www.ciab.com/resources/soft-market-clear-in-q3-2025-according-to-the-council-of-insurance-agents-brokers-quarterly-p-c-market-survey/
• State Farm General Insurance Company, "Update on California" (Mar. 20, 2024): https://newsroom.statefarm.com/update-on-california/
• NOAA Office for Coastal Management, Hurricane Costs (Helene and Milton): https://coast.noaa.gov/states/fast-facts/hurricane-costs.html

News and commentary:

• Reinsurance News, "Global property cat ROL down 12% at Jan 1 reinsurance renewals: Guy Carpenter" (Dec. 31, 2025): https://www.reinsurancene.ws/global-property-cat-rol-down-12-at-jan-1-reinsurance-renewals-guy-carpenter/
• Insurance Journal, "After Years of Losses, Florida Insurers Saw Underwriting Profits in 2024, AM Best Says" (May 30, 2025): https://www.insurancejournal.com/news/southeast/2025/05/30/825605.htm
• Insurance Journal, "Insured Losses From Natural Disasters Hit $140B as Climate Change 'Shows Its Claws'" (Jan. 9, 2025): https://www.insurancejournal.com/news/international/2025/01/09/807524.htm
• Florida Realtors, "Citizens Policies Plummet in 2025" (Jan. 6, 2026): https://www.floridarealtors.org/news-media/news-articles/2026/01/citizens-policies-plummet-2025