What Homeowners Insurance Doesn't Cover — 7 Gaps to Know

TL;DR: A standard homeowners policy does not cover flood damage, earthquake damage, sewer or drain backups, mold from neglect, or normal wear and tear on your roof, plumbing, or HVAC system. Most of these gaps need a separate policy or endorsement, and flood coverage alone averages $700-$900 a year for a moderate-risk home. Read your declarations page and ask your agent about these specific exclusions before a claim forces you to find out the hard way.

_Last reviewed: August 2026 · 7 min read_

Most homeowners find out what their policy excludes right after a pipe bursts or a storm floods the basement, when it's too late to add coverage. The gaps aren't hidden in fine print on purpose, but insurers do assume you already know the basics, and they don't.

Okoniq Property Hub helps homeowners track policy renewal dates, coverage limits, and claim history in one place so gaps like these don't get discovered during a crisis.

Does homeowners insurance cover flood damage?

No. Flood damage from rising water, whether it's a river overflowing, storm surge, or heavy rain pooling around your foundation, is excluded from every standard homeowners policy sold in the US. This surprises a lot of people because water damage from a burst pipe inside the house is usually covered, but water coming from outside is not.

You need a separate flood policy, either through the National Flood Insurance Program (NFIP) or a private carrier. NFIP premiums averaged around $888 a year in 2024, though homes in high-risk FEMA zones can pay $2,000 or more. If you're not sure whether your address sits in a flood zone, FEMA's map tool will tell you in under a minute, and it's worth checking even if your lender didn't require flood coverage at closing. For a full breakdown of what's included and how NFIP caps work, see flood insurance basics for homeowners.

Is earthquake damage covered by a standard policy?

No, earthquake and earth movement damage — including sinkholes and landslides in most states — is excluded unless you buy a separate earthquake policy or endorsement. This is true even in seismically active states like California, Oklahoma, and parts of the Pacific Northwest.

Earthquake insurance typically carries a high deductible, often 10-15% of your dwelling coverage, so a $300,000 home might mean a $30,000-$45,000 deductible before the policy pays anything. That structure exists because insurers expect either no damage or catastrophic damage, with little in between. Whether the premium makes sense for your risk level and deductible tolerance is worth running through before you decide either way — see earthquake insurance, is it worth it? for the math.

What everyday problems does homeowners insurance skip?

Sewer backups, sump pump failures, and mold from long-term neglect are the three most common claim denials homeowners run into. A sewer or drain backup — water coming up through your drains during heavy rain — is excluded on most standard policies unless you've added a specific endorsement, which usually costs $40-$100 a year and is one of the cheapest add-ons available.

Mold is trickier. If mold results from a sudden, covered event like a burst pipe, the policy often pays for remediation. But if an adjuster determines the mold grew over months because a slow leak went unaddressed, that's classified as a maintenance failure and denied. The same logic applies to a roof that leaks because it's 22 years old and past its expected lifespan, or plumbing that corrodes from age. Insurers treat wear and tear as the homeowner's responsibility, not a risk to insure against, so routine upkeep and having enough set aside for repairs matters more than people expect. How much emergency fund a homeowner needs walks through a reasonable target for exactly this kind of gap.

Does homeowners insurance cover a rental unit or home business?

No, not once you start renting out the property or a portion of it. If you move out and rent the whole house, or convert your home into a duplex, a standard homeowners policy stops applying and you need landlord insurance instead. Even renting a single room on a platform like Airbnb for more than occasional stays can void coverage if your insurer isn't informed.

| | Homeowners Policy | Landlord Policy | |---|---|---| | Covers owner-occupied dwelling | Yes | No | | Covers rental income loss | No | Yes, usually | | Covers tenant liability claims | Limited | Yes | | Typical annual cost (comparable home) | $1,200-$1,800 | $1,500-$2,400 |

If you're weighing the switch, landlord insurance vs homeowners — what changes? covers the specific clauses that trip people up during the transition, including what happens if you don't notify your carrier in time.

Do I need extra liability coverage beyond my policy limit?

Yes, if your net worth exceeds your policy's liability limit, which is usually $100,000-$500,000 on a standard homeowners policy. If a guest is seriously injured on your property and sues for $600,000, your policy pays up to its limit and you're personally on the hook for the rest — including your savings, other real estate, and future wages in some states.

An umbrella policy extends liability coverage in $1 million increments, often for $200-$400 a year for the first million, which is inexpensive relative to the exposure it removes. This matters even more if you own a second property or a rental, since tenant and visitor injury claims tend to run higher than owner-occupied ones. Umbrella insurance for landlords breaks down how the coverage stacks on top of an existing landlord or homeowners policy.

FAQ

Does homeowners insurance cover a burst pipe?

Yes, sudden and accidental water damage from a burst pipe is typically covered, including the resulting drywall and flooring repair, but the coverage doesn't extend to fixing the pipe itself if the failure was due to age or lack of maintenance.

Does homeowners insurance cover foundation cracks?

Only if the crack results from a covered peril like a fallen tree or fire. Foundation issues from soil settling, poor drainage, or age are excluded and fall under maintenance, which is one reason many owners in clay-soil regions carry a separate foundation endorsement.

Will my policy cover a home business I run from my garage?

Generally no, beyond a small limit of around $2,500 for business equipment. If you have clients visiting, employees, or inventory worth more than that, you need a business owner's policy or an endorsement specific to home-based businesses.

Is termite or pest damage covered?

No. Termite, rodent, and general pest damage is considered a preventable maintenance issue, not a sudden loss, so it's excluded across nearly every standard policy regardless of carrier.

How do I find out exactly what my policy excludes?

Read the "Exclusions" section of your declarations page, usually four to six pages in, or call your agent and ask specifically about flood, earthquake, sewer backup, and mold. How much homeowners insurance do I actually need? is a good starting point for reviewing your full coverage picture line by line.

This is educational information, not insurance advice. Talk to a licensed insurance agent about your specific policy exclusions, endorsements, and state requirements.