The Complete Guide to Texas Windstorm Insurance (TWIA)

Coastal Texas Has a Unique Insurance Challenge

If you live in one of the 14 coastal Texas counties or parts of Harris County, you may have trouble finding wind and hail coverage through standard home insurance. Many private insurers exclude wind damage in these areas due to hurricane risk. That's where the Texas Windstorm Insurance Association (TWIA) comes in.

What Is TWIA?

TWIA is a state-created insurer of last resort. It provides wind and hail coverage for properties in designated coastal areas when private insurance isn't available. Think of it as the backup plan for wind coverage.

What TWIA Covers

• Wind damage to your home's structure
• Hail damage
• Wind-driven rain damage
• Damage from wind-borne debris

What TWIA Does NOT Cover

• Flood (you need separate NFIP or private flood insurance)
• Fire, theft, liability (your standard homeowners policy covers these)
• Content/personal property (unless you add it)
• Storm surge (this is flooding, not wind)

Who Needs TWIA?

You Might Need TWIA If You Live In:

• Galveston County
• Brazoria County (coastal portions)
• Chambers County
• Jefferson County
• Orange County
• Nueces County
• San Patricio County
• Aransas County
• Calhoun County
• Matagorda County
• Jackson County
• Victoria County
• Refugio County
• Kleberg County
• Portions of Harris County (designated areas)

The Two-Policy Reality

Coastal Texas homeowners often need two policies:

1. Standard homeowners policy (HO-3) excluding wind — covers fire, theft, liability, water damage, and other perils
2. TWIA policy — covers wind and hail only

Together, they provide complete coverage but at a higher total cost than a single comprehensive policy.

How Much TWIA Costs

TWIA premiums vary based on:

• Home value and construction type
• Location (closer to coast = more expensive)
• Year built (newer homes meeting windstorm building codes cost less)
• Roof type and age
• Deductible chosen

Average Annual Premiums

• $200,000 home, newer construction: $1,500-$3,000
• $300,000 home, newer construction: $2,500-$4,500
• $200,000 home, older construction: $3,000-$5,000
• Galveston Island: Among the most expensive

Deductible Options

TWIA offers percentage-based deductibles:

• 1% of dwelling coverage
• 2% of dwelling coverage (most common)
• 5% of dwelling coverage (lowest premium)

On a $300,000 home with a 2% deductible, you'd pay $6,000 out of pocket before TWIA coverage kicks in.

Requirements for TWIA Coverage

WPI-8 Certificate

To qualify for TWIA, your home needs a WPI-8 certificate (windstorm compliance certificate) proving it meets the Texas Department of Insurance windstorm building code. This is required for:

• Homes built after 1988 in TWIA-designated areas
• Renovations or additions exceeding certain thresholds
• Any property applying for TWIA coverage

Getting a WPI-8:

• A licensed inspector evaluates your home's wind resistance
• Cost: $100-$500 for inspection
• May require improvements if your home doesn't meet current standards

Homes Built Before 1988

Older homes without a WPI-8 can sometimes still get TWIA coverage through alternative inspection methods, but it's more complex and may result in limited coverage.

Alternatives to TWIA

Private Windstorm Insurance

The private market for coastal wind coverage has grown in recent years:

• Potentially lower premiums than TWIA
• Higher coverage limits available
• More flexible deductible options
• Not available everywhere — depends on your specific property and location

Ask your agent about private alternatives before defaulting to TWIA.

Comprehensive Policies Including Wind

Some carriers will write full homeowners policies (including wind) in TWIA-designated areas:

• Usually for newer, well-built homes
• May require wind mitigation features
• Often more expensive than TWIA + standard policy combined
• Simplifies coverage with a single policy

Wind Mitigation That Lowers TWIA Costs

Investing in wind resistance lowers your TWIA premium:

• Hurricane clips/straps: Connect roof to walls ($500-$2,000 to retrofit)
• Impact-resistant roof covering: Metal or rated shingles (10-15% discount)
• Impact-rated windows/shutters: Prevent wind-borne debris penetration (10-15% discount)
• Reinforced garage door: Garage doors are a common failure point (5-10% discount)
• Secondary water barrier: Prevents water intrusion if roof covering is blown off

The Bottom Line

If you live on the Texas coast, wind and hail insurance is a separate (and expensive) reality. TWIA exists as a backstop, but private alternatives are growing. Either way, invest in wind mitigation — it protects your home and lowers your premium. And always pair your wind coverage with a standard homeowners policy and separate flood insurance for complete protection.