If you're buying or already own a luxury home near Galveston Bay, Clear Lake, or Lake Conroe's waterfront, Texas's windstorm insurer of last resort, TWIA, caps residential dwelling coverage at $1,773,000 for policies issued or renewed in 2026. Anything your home is worth above that number needs a separate private excess wind policy, and that gap can stall your mortgage underwriting if nobody catches it before closing.

What TWIA Covers, and Where It Stops

The Texas Windstorm Insurance Association exists because private insurers pulled back from wind and hail risk along the Gulf Coast decades ago. TWIA fills that gap, but state regulators set its coverage limits, and per the Texas Department of Insurance's own overview, the 2026 residential cap sits at $1,773,000 in combined dwelling coverage. Regulators declined to raise that limit for most property types this year, so it holds steady even as home values along the coast keep climbing.

The Coastal Insurance Stack

A home on Galveston Island or Bolivar Peninsula typically needs three separate policies stacked together, not one: a standard homeowners policy for fire and liability, a TWIA or private wind policy for windstorm and hail, and a flood policy through the NFIP or a private carrier. None of the three covers what the others do, and a lender underwriting your loan wants to see all three lined up before closing, not assumed.

• A standard homeowners policy, covering fire, theft, and liability.
• A windstorm policy, through TWIA up to its cap or a private excess wind carrier above it.
• A flood policy, through the NFIP or a private flood carrier, since wind policies exclude flood damage.

What Happens Above the $1,773,000 Cap?

If your home's rebuild value tops TWIA's cap, and most luxury homes over roughly $1.8 million do, you need a separate private surplus-lines excess wind policy to cover the difference. That policy has to be arranged and bound before closing in most cases, since a lender won't fund a mortgage on a coastal home without confirming the full rebuild value is insured against wind, not only the portion TWIA covers. Deductibles on TWIA policies in higher-risk zip codes like Galveston Island and Bolivar Peninsula also commonly run 2 to 5 percent of your dwelling coverage now, instead of the older 1 percent default, which changes your out-of-pocket exposure on a claim.

Why This Matters More Right Now

Houston-area luxury sales, homes at $1 million and up, made up about 27 percent of Texas's statewide luxury transactions in the year ending October 2025, the second-largest share in the state, with a median near $1.39 million. Lake Conroe waterfront homes alone averaged around $1.07 million in 2025. As more of that activity moves toward the coast and the lakes, more buyers run into the TWIA cap for the first time mid-underwriting rather than before they make an offer.

Peter's background in construction and mortgage lending means he catches this gap in a loan file before it becomes a closing-day surprise, which is exactly what a lender-side career trains you to look for on a waterfront purchase. We've separately covered flood risk and insurance for Houston-area luxury buyers, which is a related but different gap from the wind coverage described here.

Ask your insurance agent for the excess wind quote before you're under contract, not after. A coastal luxury purchase can lose weeks waiting on a policy nobody priced out ahead of time.

Frequently Asked Questions

What is TWIA and why does it matter for a luxury home purchase near the Texas coast?

TWIA is the Texas Windstorm Insurance Association, the state's insurer of last resort for wind and hail coverage along the Gulf Coast, and it caps residential dwelling and contents coverage at $1,773,000 for 2026. Any home worth more than that needs a separate private policy to cover the difference, which matters because a lender won't close your mortgage without full wind coverage confirmed.

Can I get full windstorm insurance on a $2.5 million home near Galveston Bay?

Yes, but not through TWIA alone. You'll need TWIA coverage up to its $1,773,000 cap plus a separate private excess wind policy for the remainder, and both need to be bound before your mortgage can close.

Do I need three separate insurance policies to buy a coastal home in Texas?

Most coastal properties do need three: a standard homeowners policy for fire and liability, a wind policy through TWIA or a private excess carrier, and a flood policy through the NFIP or a private flood insurer. No single policy in that stack covers what the other two do.

Why did my insurance agent say I need excess wind coverage for a house near Lake Conroe?

If your home's rebuild value is above TWIA's $1,773,000 cap, TWIA can't insure the full amount, so your agent has to place a separate private surplus-lines policy for the gap. This applies to some Lake Conroe waterfront properties as well as Gulf Coast homes, depending on the rebuild value.

Are TWIA deductibles the same everywhere on the Texas coast?

No, deductibles in higher-risk zip codes like Galveston Island and Bolivar Peninsula commonly run 2 to 5 percent of your dwelling coverage now, rather than the older 1 percent default. Confirm your specific zip code's deductible requirement before you budget for a claim.

Peter & Vicky Royster
The Move Live Love TX Team™
Houston Real Estate Specialists
Family First. Texas Roots. We've Got You Covered.™
10200 Grogans Mill Rd., Suite 125
The Woodlands, TX 77380
(713)-805-6247
www.movelivelovetx.com