Most homeowners assume their policy is a force field. Pay the premium, get magical protection against anything bad that could happen. It's not. Standard homeowner's policies have a long list of exclusions — things they explicitly will not cover — and almost everyone learns about those exclusions at the worst possible moment.
Here are the seven biggest ones. Knowing them now is cheaper than learning them at claim time.
1. Flood damage
Flood is the most famous exclusion, and the one people get wrong most often. If water rises from the ground up — overflowing creek, hurricane storm surge, drainage backup from outside the home — your homeowner's policy will not cover it. You need a separate flood policy through the National Flood Insurance Program (NFIP) or a private flood carrier. Even homes in low-risk zones flood; about a quarter of all flood claims come from outside designated flood plains.
2. Earthquakes and ground movement
Texas isn't California, but North Texas does get earthquakes — especially in fracking-adjacent counties. Standard policies exclude earth movement entirely, which also includes sinkholes, mudslides, and shifting soil that cracks foundations. Earthquake coverage is a separate endorsement, usually inexpensive to add if you want it.
3. Mold (mostly)
Mold from a sudden covered loss — like a burst pipe you caught and reported quickly — usually gets a limited payout, often capped at $5,000 to $10,000. Mold from long-term moisture you ignored — slow leaks, humidity problems, that water spot on the ceiling you "kept meaning to look at" — is generally excluded entirely.
4. Pest damage
Termites, rodents, insects, birds, raccoons in the attic. Anything biological that eats or damages your house is on you. Insurance covers sudden accidental damage, not the predictable result of nature doing what nature does. Maintenance is your responsibility.
5. Sewer and drain backups
If sewage comes up through your floor drain or toilet, that's not "water damage" in the policy's language — it's a sewer backup, which is a separate endorsement most carriers offer for $40-80 per year. It's worth it. Without it, you're paying for the cleanup, the floor replacement, and the lower-level remediation yourself.
6. Off-property losses (the cap surprise)
Your homeowner's policy has limited coverage for stuff you take with you. Jewelry, cameras, laptops, business equipment stolen from a hotel — typically capped at low limits, often around $1,500 per category. For valuable items you travel with or use off-premises, schedule them on a separate rider at their appraised value.
7. The dog you didn't disclose
This one trips people up. Most carriers ask about dog breeds in the application, and if you didn't disclose a "restricted breed" — pit bulls, rottweilers, Doberman pinschers, and (in many cases) German shepherds — they can deny a dog-bite liability claim entirely, or non-renew your policy at the next cycle. If your dog has bitten anyone, ever — even playfully — talk to your agent. Honest disclosure is cheap. A denied liability claim isn't.
What to do about all this
Pull your declarations page. Look at the named perils section and the exclusions section. Then ask your agent two questions: "What's the cheapest endorsement I can add for the biggest exposure I have?" and "What's an exposure I don't know I have?" That second question is where independent agents actually earn their keep — we look at what's missing, not just what's there.
The honest bottom line
Standard homeowner's policies are written by carriers for the carriers, not for you. The exclusions are real, and they're not arbitrary — they exist because those losses are expensive and unpredictable. The good news: almost every exclusion has an endorsement that can fix it for a reasonable cost. But you have to ask. And you have to ask before you have a claim, not after.