The Texas Windstorm Insurance Association (TWIA) is the state's residual-market insurer of last resort for wind and hail coverage in the 14 first-tier coastal counties and parts of Harris County east of Highway 146. A TWIA policy covers windstorm and hail damage only: no flood, no fire, no theft, no liability. For policies issued or renewed on or after January 1, 2026, TWIA's maximum limit is $1,773,000 for a residential dwelling and its contents. To qualify, you need a declination from at least one authorized insurer writing wind coverage in the area, plus a windstorm certificate of compliance (WPI-8) for anything built or altered since 1988. Most coastal Texans buy TWIA alongside an ex-wind homeowners policy and separate flood insurance, so the wind policy is one layer of a three-policy stack.
This page explains where TWIA applies, what it covers and excludes, the current maximum limits, eligibility and inspection rules, how premiums and funding work, and when a surplus-lines wind policy beats TWIA. It is the windstorm chapter of our Texas homeowners insurance hub. If you own on the island, start with our Galveston coastal insurance guide, and note that TWIA is a different program from the Texas FAIR Plan, which handles fire and general property risk statewide.
Key Takeaways
- TWIA writes wind and hail only, in a defined coastal territory. The designated catastrophe area is the 14 first-tier coastal counties plus portions of Harris County east of Highway 146, per TWIA.
- The 2026 residential maximum is $1,773,000 for a dwelling and its contents. The Texas Commissioner of Insurance disapproved TWIA's proposed increase to $1,809,000 and approved only the manufactured-home increase to $119,000, per TDI Order 2025-9540.
- A TWIA policy never covers flood. Storm surge is flood, not wind. Coastal owners pair TWIA with NFIP or private flood coverage, and homes in zones V, VE, or V1-30 built after September 1, 2009 must show proof of flood insurance to get a TWIA policy at all.
- Eligibility requires a declination and a WPI-8 certificate. You need one written declination from an authorized insurer actively writing wind in the area, and structures built or altered since 1988 need a certificate of compliance (WPI-8, WPI-8-E, or WPI-8-C), per TDI.
- TWIA filed for no rate change in 2026. The board's actuarial analysis put rate inadequacy at just 3% residential and 5% commercial, down from double digits, per the Insurance Journal. The average residential premium is about $2,877 as of March 31, 2026, per TWIA.
- Hurricane Beryl drained TWIA's catastrophe reserve in 2024. TWIA entered 2025 with a $413.5 million deficit, and 2026 legislation lowered its funding mandate to a 1-in-50-year storm, about $4.3 billion, per Insurance Journal.
- Latent Insurance Services is an independent brokerage (NPN #20972791) that quotes the whole coastal stack in one pass: admitted ex-wind homeowners, TWIA, flood, and the surplus-lines wind markets that beat TWIA on limits or price for well-built and high-value homes.
What Is TWIA and Where Does It Apply?
TWIA is the Texas Windstorm Insurance Association, a residual-market association created by the Texas Legislature in 1971 to provide wind and hail coverage where private insurers will not, per the TWIA overview. It is not a state agency and not taxpayer funded; it is an association of every property insurer licensed in Texas, and it exists so that coastal property owners can still buy windstorm coverage after the voluntary market excludes it. As of the first quarter of 2025, TWIA insured 267,713 residential and manufactured-home policies with about $105 billion in insured value, per the TWIA Fact Book.
TWIA's territory, called the designated catastrophe area, is precise. It covers the 14 first-tier coastal counties: Aransas, Brazoria, Calhoun, Cameron, Chambers, Galveston, Jefferson, Kenedy, Kleberg, Matagorda, Nueces, Refugio, San Patricio, and Willacy. It also covers portions of Harris County east of Highway 146, including property inside the city limits of La Porte, Morgan's Point, Pasadena, Seabrook, and Shore Acres, per TWIA's coverage and eligibility page. If your home is in Houston proper or anywhere else outside this territory, TWIA is not your market; your wind coverage comes from your homeowners policy or, if that policy excludes wind, from other markets we cover in the Houston guide.
Inside the territory, most admitted homeowners carriers exclude wind and hail from their policies. That exclusion is why TWIA exists: the standard coastal placement is an ex-wind homeowners policy for fire, theft, water, and liability, plus a TWIA policy for wind and hail, plus flood coverage.
What a TWIA Policy Covers, and What It Excludes
A TWIA policy covers direct physical damage to insured property from windstorm and hail, and nothing else, per TWIA. It is a single-peril policy. Fire, lightning, theft, water damage from plumbing, and personal liability are all excluded, because your ex-wind homeowners policy is supposed to carry them. The exclusion that surprises coastal owners at claim time is flood: storm surge from a hurricane is flood damage, and TWIA does not pay for it.
How the perils split across the coastal three-policy stack:
| Peril | Ex-wind homeowners | TWIA | Flood policy (NFIP or private) |
|---|---|---|---|
| Wind and hail | Excluded | Covered | Excluded |
| Hurricane storm surge | Excluded | Excluded | Covered |
| Fire, lightning, theft | Covered | Excluded | Excluded |
| Sudden plumbing leaks | Covered | Excluded | Excluded |
| Personal liability | Covered | Excluded | Excluded |
| Rain entering through a wind-created opening | Excluded | Covered | Excluded |
Two practical consequences. First, after a hurricane you may have two or three claims running at once (wind to TWIA, surge to your flood carrier, and interior water disputes between them), so documentation of what damaged what matters enormously. Second, every policy in the stack has its own deductible. How the wind and hail deductible works, and how large it can get on the coast, is covered in our Texas wind and hail deductible explainer.
TWIA Maximum Limits for 2026
For policies delivered, issued, or renewed on or after January 1, 2026, TWIA's maximum liability limits are $1,773,000 for a residential dwelling (or individually owned townhouse) and its contents, $374,000 for the contents of an apartment, condominium, or townhouse unit, $119,000 for manufactured homes, and $4,424,000 for commercial and governmental structures and their contents, per TDI Final Order 2025-9540. TWIA proposed inflation increases of 2% to 2.8% across all categories for 2026, but the Commissioner of Insurance approved only the manufactured-home increase (from $116,700 to $119,000) and disapproved the rest, so the dwelling cap stayed at $1,773,000 instead of rising to $1,809,000.
| Property type | 2026 TWIA maximum limit |
|---|---|
| Dwelling or individually owned townhouse, including contents | $1,773,000 |
| Contents of an apartment, condo, or townhouse unit | $374,000 |
| Manufactured home | $119,000 |
| Commercial or governmental structure and contents | $4,424,000 |
These caps adjust (or fail to adjust) each year: Insurance Code Section 2210.502 requires TWIA's board to propose annual inflation adjustments based on the BOECKH building-cost index, and the Commissioner approves, modifies, or disapproves the filing. The practical takeaway for owners of expensive coastal homes is that the dwelling cap is hard. If your rebuild cost is $2.5 million, TWIA will never pay more than $1,773,000, and the gap has to be filled in the surplus-lines market. We cover that placement in high-value home insurance in Texas.
How to Qualify: Declination, WPI-8 Certificates, and Flood Rules
TWIA eligibility has four working parts: the property must sit in the designated catastrophe area, you must have been declined by at least one authorized insurer actively writing windstorm coverage in that area, structures built or altered since 1988 must be certified as built to the applicable windstorm building code, and certain high-risk flood-zone homes must carry flood insurance, per TWIA. The property also has to be in insurable condition, without unrepaired damage.
- The declination requirement. You need a denial of wind and hail coverage from at least one authorized insurer actively writing or renewing windstorm coverage in the designated area. Your agent documents this on the application. In practice this is rarely the obstacle, because most admitted carriers exclude wind on the coast as a matter of course.
- WPI-8 certificates of compliance. Structures (and any additions, alterations, or repairs) must be certified as compliant with the windstorm building code in effect when they were built. TDI issues the WPI-8 for new and ongoing construction and the WPI-8-E for completed improvements; since June 1, 2020, TDI issues all certificates, while TWIA itself issued WPI-8-C certificates for completed improvements between January 1, 2017 and May 31, 2020, per the TDI Windstorm Inspection Program. An uncertified addition can leave that portion of the home without wind coverage.
- The flood insurance gate. If the home is in flood zone V, VE, or V1-30 and was constructed or substantially altered after September 1, 2009, you must show proof of NFIP flood insurance (where available) before TWIA will issue the policy, per TWIA.
- Insurable condition. Pre-existing damage, deteriorated roofs, and hazardous conditions must be repaired before binding.
Buying a coastal home? Ask for the WPI-8 certificates during your option period, and verify them on TDI's online lookup. A house with an uncertified roof replacement or room addition is a house with a TWIA problem you will inherit at closing.
What TWIA Costs and How Rates Are Set
The average TWIA residential premium is approximately $2,877 per year as of March 31, 2026, per TWIA's rates page. Your actual premium depends on the amount of insurance, construction type, deductible, and optional coverages; TWIA does not use credit scoring. Rates are set by the TWIA board of directors, subject to review by the Texas Department of Insurance.
The recent rate story has been unusually calm. For 2026 policies, TWIA's Actuarial and Underwriting Committee recommended no rate change, and the board filed for 0%, after an analysis showing residential rates only 3% inadequate and commercial rates 5% inadequate, down from double-digit inadequacy for more than a decade, per the Insurance Journal and TWIA. The improvement came largely from 2025 legislation that cut TWIA's expected reinsurance and maintenance-tax costs. Contrast that with 2024, when TWIA requested a 10% increase and TDI disapproved it, per TWIA.
One quiet cost lever: TWIA's Automatic Adjusted Building Cost (ABC) endorsement adjusts your dwelling limit at renewal to track building-cost inflation, per TWIA. Your coverage amount (and premium) can rise at renewal even in a year with no rate change. That is a feature, not a bug: coastal rebuild costs have climbed, and an underinsured dwelling limit is the worse outcome.
How TWIA Is Funded: CRTF, Public Securities, Assessments, Reinsurance
TWIA pays losses beyond premiums from a statutory funding stack, in order: the Catastrophe Reserve Trust Fund (CRTF), public securities, member-insurer assessments, and reinsurance, per TWIA Funding 101. The statutorily guaranteed layers are $1 billion in policyholder-backed public securities and $1 billion in member assessments; everything above that is CRTF balance and whatever reinsurance and catastrophe bonds TWIA buys each season.
Why this matters to a policyholder: the stack has been tested recently. Hurricane Beryl, which struck the Texas coast on July 8, 2024, drained the CRTF, and TWIA entered 2025 with a $413.5 million deficit after reporting a small surplus a year earlier, per Insurance Business. For the 2025 season TWIA assembled $6.227 billion in total funding, per Insurance Business.
For 2026 the legislature lowered TWIA's funding mandate from a 1-in-100-year to a 1-in-50-year probable maximum loss, and the board set that figure at $4.3051 billion: $2 billion of statutory funding plus about $2.28 billion of reinsurance and catastrophe bonds, with a $500 million line of credit for immediate claim payments, per the Insurance Journal and TWIA. Part of that tower is a $750 million Alamo Re 2026-1 catastrophe bond, per Artemis. A smaller tower means a bad-enough storm could pressure the fund, and history (TWIA's Ike experience) says claims disputes get harder when funding gets tight. It is one more reason not to treat TWIA as automatic if a private market will write your wind.
Pairing TWIA With an Ex-Wind Homeowners Policy and Flood
A TWIA policy is never your whole insurance program; it is the wind layer of a three-policy stack. The standard coastal placement is an ex-wind homeowners policy (fire, theft, water, liability, loss of use), a TWIA policy sized to the same dwelling value for wind and hail, and an NFIP or private flood policy for surge and rising water. We walk through assembling the full stack, with representative costs, in our Galveston and Texas coast guide.
The assembly details that separate a clean stack from a gappy one:
- Match the dwelling limits. The TWIA limit and the ex-wind policy's Coverage A should both reflect the same current rebuild cost. A mismatch means one peril is underinsured.
- Align effective dates. Renewal dates that drift apart create windows where one layer lapses. We bind and renew all three together.
- Mind the two deductibles. A wind claim hits the TWIA deductible; a fire claim hits the homeowners deductible; a surge claim hits the flood deductible. Budget for the largest, not the average.
- Do not skip flood because the lender did not require it. TWIA pays nothing for surge. NFIP dwelling coverage caps at $250,000, so larger coastal homes usually need private or excess flood; see NFIP vs private flood insurance.
One comparison worth knowing: Florida runs a uniform, state-mandated wind-mitigation credit system, where a standardized inspection translates directly into premium discounts, as we cover in our Florida wind mitigation guide. Texas took a different path. Instead of graded discounts, the WPI-8 building-code certificate functions as a gate: build to code and TWIA will insure the structure, skip the certificate and the improvement may be uninsurable for wind. If you are hardening a coastal Texas home, do it inside the WPI-8 inspection process so the work counts.
Depopulation, and When E&S Wind Beats TWIA
TWIA is designed to shrink when the private market returns. Its Assumption Reinsurance Depopulation Program, authorized by the legislature in 2015, lets private insurers assume blocks of TWIA policies; six rounds between 2016 and 2023 moved over 16,000 policies to private carriers, but recent rounds were cancelled for lack of insurer interest and no carriers applied to participate for 2025, per the TDI TWIA overview and TWIA. If you receive a depopulation offer, you get a review window to compare the private carrier's terms against staying with TWIA; the offer is optional.
Separately, a surplus-lines (E&S) wind policy can simply beat TWIA. We quote E&S wind against TWIA when:
- The home exceeds the TWIA cap. Rebuild cost above $1,773,000 means TWIA cannot insure the full structure. E&S wind markets write the full value on one form, which is standard for the homes in our Texas high-value guide.
- The home is new, elevated, and well-built. TWIA's rates are essentially uniform for what it covers; a 2020s-code home on pilings can sometimes price better in a market that rewards construction quality.
- You want one policy instead of three. Some E&S programs write wind plus the other perils on a single form, simplifying claims after a hurricane where wind and water damage tangle.
- You need terms TWIA does not offer. Higher contents limits, loss-of-use structures, or coverage for a home mid-renovation without a completed certificate.
The trade-offs: E&S carriers are not backed by the Texas guaranty association, and pricing moves with the reinsurance cycle. For many modest coastal homes TWIA remains the cheapest wind available. The point is to price both lanes rather than default into either one.
Frequently Asked Questions
What does TWIA insurance cover?
TWIA covers direct damage to insured property from windstorm and hail only, in the 14 first-tier Texas coastal counties and parts of Harris County east of Highway 146. It does not cover flood or storm surge, fire, theft, water damage from plumbing, or personal liability. Coastal homeowners pair a TWIA policy with an ex-wind homeowners policy for the other perils and a separate NFIP or private flood policy for rising water. Rain damage is covered only when wind first creates an opening in the roof or walls.
What are TWIA's maximum coverage limits in 2026?
For policies issued or renewed on or after January 1, 2026, TWIA's maximums are $1,773,000 for a residential dwelling or individually owned townhouse including its contents, $374,000 for contents of an apartment or condo unit, $119,000 for manufactured homes, and $4,424,000 for commercial structures and their contents, per TDI Final Order 2025-9540. The Commissioner disapproved TWIA's proposed increases for every category except manufactured homes, so the dwelling cap stayed flat. Homes with rebuild costs above the cap need a surplus-lines wind policy for the full value or an excess layer above TWIA.
Who is eligible for TWIA coverage?
A property qualifies for TWIA if it sits in the designated catastrophe area (the 14 first-tier coastal counties or the covered part of Harris County east of Highway 146), the owner has been declined wind coverage by at least one authorized insurer actively writing windstorm insurance in that area, the structure and any post-1988 additions or alterations carry a windstorm certificate of compliance (WPI-8, WPI-8-E, or WPI-8-C), and the property is in insurable condition. Homes in flood zones V, VE, or V1-30 that were built or substantially altered after September 1, 2009 must also show proof of NFIP flood insurance where it is available.
What is a WPI-8 certificate and do I need one?
A WPI-8 is a windstorm certificate of compliance confirming that a structure, or an addition, alteration, or repair, was built to the applicable windstorm building code in the Texas coastal catastrophe area. TDI issues the WPI-8 for new and ongoing construction and the WPI-8-E for completed improvements, and since June 1, 2020 TDI issues all certificates; TWIA issued its own WPI-8-C for completed improvements from 2017 through May 2020. You need certificates for anything built or altered since 1988 for TWIA to cover it, so verify them on TDI's lookup before buying a coastal home or starting a renovation.
How much does TWIA insurance cost?
The average TWIA residential premium is approximately $2,877 per year as of March 31, 2026, per TWIA. Your premium depends on the amount of insurance, construction type, deductible, and optional coverages; TWIA does not use credit scoring. TWIA filed for no rate change for 2026 after its actuarial analysis found residential rates only 3% inadequate. Remember that TWIA is only the wind layer: your true coastal insurance cost is the ex-wind homeowners policy plus TWIA plus flood, combined.
Is TWIA financially able to pay claims after a major hurricane?
TWIA pays losses from premiums, then the Catastrophe Reserve Trust Fund, then $1 billion in public securities, $1 billion in member-insurer assessments, and reinsurance. For 2026 the funding tower is about $4.3 billion, sized to a 1-in-50-year storm under legislation passed in 2025, down from $6.2 billion in 2025. Hurricane Beryl drained the CRTF in 2024 and left TWIA with a $413.5 million deficit entering 2025, which is why the association leans heavily on reinsurance and catastrophe bonds. A storm exceeding the funded level would require legislative action, which is a real, if remote, tail risk of relying on the residual market.
If you own coastal Texas property and need windstorm coverage, Latent Insurance Services quotes the whole stack in one pass: the ex-wind homeowners policy, TWIA (or an E&S wind alternative), and NFIP or private flood, with limits matched and effective dates aligned. We are an independent brokerage (NPN #20972791), so we compare TWIA against the surplus-lines wind markets that write above the $1,773,000 cap or price better for well-built homes, and we handle the declination and WPI-8 paperwork that trips up coastal applications.
Get a coastal Texas windstorm quote or schedule a call and we will map your address, certificates, and rebuild cost to the right wind placement.
Last updated: July 12, 2026. Sourced from TWIA, the Texas Department of Insurance (Final Order 2025-9540 and the TDI Windstorm Inspection Program), Insurance Journal, Insurance Business, and Artemis (all cited inline above).
Not sure whether TWIA or a private wind policy fits your home? We will price both and show you the difference. No pressure, no sales pitch.