Texas Blocks TWIA's 10% Rate Hike: What It Means for San Antonio-Area Homeowners

If you own a home near the Texas coast or are thinking about buying one, you just got some short-term relief — and a long-term warning worth paying attention to.

The Texas Insurance Commissioner has rejected a filing from the Texas Windstorm Insurance Association, known as TWIA, that would have raised residential and commercial policy rates by 10% for 2025. TWIA's board had approved the filing on August 6, 2024, setting the stage for what would have been a significant jump in premiums for policyholders in the coastal counties TWIA serves.

For now, the rate increase will not go into effect. But the underlying numbers that drove the request have not gone away, and homeowners, buyers, and sellers along the Texas Gulf Coast — including people who commute to San Antonio from communities closer to the water — should understand what is really at play here.

TWIA is the insurer of last resort for wind and hail coverage in 14 Texas coastal counties and parts of Harris County. It steps in when private insurers will not write coverage in high-risk coastal areas. That makes it the primary source of windstorm protection for hundreds of thousands of Texas property owners.

Here is the number that should get your attention: TWIA's own actuarial analysis concluded that its current rates are inadequate by 38% for residential coverage and 45% for commercial coverage. That means the association's own experts believe it is collecting far less in premiums than the actual risk of loss warrants. A 10% increase would have moved rates closer to adequate, but it still would have left a very large gap.

The Commissioner's rejection does not make that gap disappear. It means TWIA will head into 2025 still charging rates its actuaries consider significantly below what the risk requires.

So what does this mean if you are buying, selling, or owning property in the greater San Antonio area?

For most homeowners in Bexar County and surrounding communities — Boerne, New Braunfels, Seguin, Converse, Schertz, Universal City — TWIA coverage is not directly in play. TWIA is a coastal program, and San Antonio sits well inland. Your wind and hail coverage comes through your standard homeowner's policy from a private carrier, not through TWIA.

However, this situation matters to you in several ways.

First, if you own a vacation or investment property along the coast — in Rockport, Port Aransas, Corpus Christi, or the Bolivar Peninsula — you are a TWIA policyholder, and this story affects you directly. The rate increase was blocked for 2025, but expect the pressure to continue. TWIA may refile, and future increases could be larger if the actuarial gap is not addressed over time.

Second, the dynamics in the coastal insurance market have a way of rippling inland. When insurers face large losses from Gulf storms, they reassess their entire Texas exposure. That can tighten the private market in San Antonio and push premiums higher across the board, even for homes nowhere near the water. Anyone who has renewed a homeowner's policy in the last couple of years already knows that statewide insurance costs have climbed.

Third, buyers relocating to San Antonio from coastal Texas communities sometimes do so specifically because of rising insurance and storm risk costs. If coastal insurance becomes increasingly uncertain or expensive over time, that migration pressure could continue to push demand — and prices — in San Antonio neighborhoods from the South Side to Stone Oak to Helotes.

For anyone buying or selling a home right now, the broader message is this: insurance costs are a real and growing line item in the cost of homeownership across Texas, and smart buyers are factoring them in before they fall in love with a house. Before you close on any property, get actual insurance quotes — not estimates — so you know exactly what you are committing to each month.

Sellers in San Antonio should be aware that buyers are doing more insurance homework than they were just a few years ago. Being upfront about a property's history of wind or hail claims can actually help a transaction move more smoothly.

Renters are not immune either. When a landlord's insurance costs rise, that pressure eventually finds its way into lease renewal conversations.

The rejection of TWIA's 10% rate filing is good news in the short term for coastal policyholders. But with the association's own actuaries saying rates are nearly 40% too low for residential properties, this is a story with more chapters to come. Staying informed is the best protection any Texas property owner has right now.