Read This Part Even If You Read Nothing Else
An HO-3 policy — the standard form for most American homes — covers the structure against open perils and personal property against named perils. What it does not cover has expanded significantly in the last few years, and the largest change is not an exclusion at all. It is a settlement clause attached to policies that still say "replacement cost" on the front page.
So the list below starts with the roof, because it is where most homeowners now have a gap they do not know about.
1. Your Roof, at Full Value
Facing years of weather losses, carriers have quietly rewritten how roof claims settle. Two changes, and they compound.
Roof payment schedules. An endorsement ties the payout to the roof's age rather than its replacement cost. A typical schedule pays 100% on a new roof, around 80% at five years, and as little as 30% at fifteen. Some carriers switch to actual cash value once a roof passes ten years; more commonly fifteen to twenty. These clauses carry different names depending on the insurer — scheduled roof settlement, roof surfacing payment schedule, limited loss settlement for windstorm or hail losses to roof surfacing — and they can sit inside a policy whose declarations page still reads "replacement cost."
Percentage wind and hail deductibles. Where the deductible was once a flat figure, it is increasingly a percentage of your insured dwelling value. In hail-exposed markets a 1% deductible has largely given way to 2%. On a home insured for $350,000, that is $7,000 rather than $1,000.
Put them together. A twelve-year-old roof is destroyed. Replacement costs $20,000. The schedule depreciates the payout to roughly $8,000, the 2% deductible takes $7,000 of that, and the cheque is about $1,000 against a $20,000 job — on a policy sold as full coverage.
What to do: find your declarations page and look for two things — the wind and hail deductible, expressed as a figure or a percentage, and any endorsement mentioning roof settlement or roof surfacing. If the deductible is a percentage, calculate the actual dollar amount. Ask your agent directly whether your roof settles at replacement cost or on a schedule, and at what age that changes. Also check whether the policy requires you to use the insurer's contractor, or whether you retain the right to choose your own. See handling a roof damage claim and replacement cost versus actual cash value.
2. Flood and Surface Water
Rising water is never covered by a homeowners policy. Not storm surge, not a river overtopping its banks, not water running across the ground into your basement. The distinction the policy draws is where the water came from, not how much damage it did.
Coverage comes from the National Flood Insurance Program or a private flood carrier. NFIP limits are $250,000 on the structure and $100,000 on contents, so higher-value homes need excess flood coverage on top. Note also the standard 30-day waiting period — you cannot buy this with a storm in the forecast.
Around a third of homeowners believe their standard policy covers flooding. It does not, anywhere, ever. See whether you need flood insurance.
3. Earth Movement
Earthquakes, landslides, mudslides and sinkholes are excluded from standard policies. Cover comes from a separate earthquake policy or endorsement, or a difference in conditions policy.
The catch is the deductible: earthquake coverage typically carries a percentage deductible of 10% to 25% of the structure's insured value, not a flat amount. On a $400,000 dwelling limit that is $40,000 to $100,000 before anything pays. It is genuine catastrophe cover rather than repair cover, and it should be evaluated on that basis.
4. Sewer Backup and Sump Pump Failure
When heavy rain overwhelms a municipal sewer and pushes waste back into your home, that is neither a flood nor covered water damage under the base policy. It needs a water back-up and sump discharge endorsement.
This is the best-value endorsement on the list — commonly $50 to $150 a year for $5,000 to $25,000 of cover. Buy the highest limit offered; remediation costs escalate quickly and the base limit is often too low. Note it typically also responds when a sump pump fails during a power cut, which is when it usually fails. Our guide to flood insurance versus water backup covers the boundary between the two.
5. Bringing the Building Up to Code
A standard policy pays to rebuild what was there. It does not pay the additional cost of complying with building codes adopted since your house was built — updated electrical, insulation, structural or wind-resistance requirements.
On an older home a substantial rebuild can trigger tens of thousands in code upgrades that the base policy simply will not fund. Ordinance or law coverage closes this, usually for a modest annual cost, and it is one of the most under-purchased endorsements relative to its value. Older houses need higher limits, not lower.
6. Maintenance, Wear and Gradual Damage
Insurance covers sudden and accidental events. It does not cover deterioration.
A pipe that bursts is covered. The same pipe seeping behind a wall for six months is excluded under seepage and persistence provisions. Termite damage, dry rot, foundation settling and mould from inadequate ventilation are all maintenance issues in the insurer's reading.
Mould is where this gets argued most. Mould following a covered event — a burst pipe, storm damage to the roof — is generally covered, often subject to a sub-limit. Mould from a slow leak you should have addressed is not. The dividing line is the cause, and the insurer will look for evidence of how long it was there.
Home warranties are sometimes suggested as the answer here. They are service contracts for ageing systems and appliances, not insurance, with their own exclusions and limits. Useful for some households, but not a substitute for coverage.
7. Sub-Limits on Valuables
Your policy might carry $150,000 of personal property coverage and still cap jewellery at $1,500 to $2,500 in total — a category limit, not a per-item one. Similar caps apply to firearms, silverware, furs, collectibles and cash.
If a $10,000 ring is stolen, you recover the sub-limit and absorb the rest.
Scheduling the item on a personal articles floater fixes it, typically costing 1% to 2% of the item's value annually. Scheduled items usually carry no deductible and — importantly — cover mysterious disappearance, meaning simply losing the item, which the base policy does not cover at all. An appraisal is usually required. Keeping a home inventory is what makes any of this provable.
8. Business Use of Your Home
Homeowners policies cover owner-occupied residential use. Running a business from the house sits outside that, and both the liability and the equipment are exposed.
If a client is injured on your property, business-related liability may be excluded. Business equipment and inventory are typically capped at a low limit. Options are an in-home business endorsement for lighter uses, or a separate business policy for anything substantial.
Short-term letting is the version that catches most people. Listing a room or the whole house is commercial use. Platform-provided protection is not the same as your own coverage and often sits above it rather than replacing it. A home-sharing endorsement or a commercial policy is what actually covers you. If you let the property longer term, that is landlord insurance territory instead.
9. Animal Liability
Many carriers maintain restricted breed lists, and some exclude animal liability entirely or cap it well below the policy's main liability limit. A bite claim involving an excluded dog can be denied outright — and dog-related liability claims are among the larger categories of homeowners liability payouts.
Check the animal liability section of your policy specifically rather than assuming your liability limit applies. If your dog is on a restricted list, specialist animal liability cover or an umbrella policy that does not exclude it is the route. Our guide to homeowners liability coverage covers the wider limits question.
10. An Empty House
Most policies contain a vacancy clause. If a home stands unoccupied beyond a defined period — commonly 30 or 60 days — coverage for vandalism, glass breakage, water damage and theft can be suspended, and in some cases the policy can be cancelled.
This catches people during a renovation, a move where the sale and purchase do not align, an extended stay elsewhere, or a probate property waiting to be sold. A vacant home policy or a specific endorsement is inexpensive relative to the exposure. Tell your insurer before the house is empty, not afterwards.
Also Excluded, Briefly
- Cyber loss and identity theft. Some policies include limited identity restoration services, but direct financial loss from fraud, phishing or ransomware is generally not covered. A cyber endorsement exists where this concerns you.
- Intentional damage, including by household members. Investigated as fraud and prosecuted.
- Damage from war, nuclear hazard and government action. Standard exclusions across the industry.
- Undisclosed renovations. A finished basement or new deck the insurer does not know about creates a real dispute at claim time and understates your rebuild cost. Tell them.
Two Situations
The endorsement that paid for itself
A finished basement floods when a power cut stops a sump pump during a spring storm. Damage to cabinetry, flooring and contents runs well into five figures.
A water back-up endorsement added two years earlier at modest annual cost pays its limit immediately. It does not cover the full loss — the limit was lower than the damage — but it funds the professional drying and mould remediation, which is the part that determines whether the problem stays contained.
The lesson is about the limit, not the endorsement. Most people who have this coverage bought the lowest tier offered.
The roof settled on a schedule
A hailstorm destroys a roof in its twelfth year. The homeowner holds what the declarations page describes as replacement cost coverage.
An endorsement, added at a renewal some years earlier and never read, settles roof surfacing on an age schedule. The payout is depreciated, and the percentage wind and hail deductible takes most of what remains.
Nothing was denied and nothing was mis-sold. The terms changed at a renewal, the packet was not read, and the difference surfaced only at the claim.
Both are composite illustrations of common patterns, not accounts of specific individuals.
The Review, in Order
- Find the declarations page. Everything below is on it or attached to it.
- Locate the wind and hail deductible. If it is a percentage, work out the dollar figure.
- Ask how your roof settles and at what age that changes.
- Check your dwelling limit against current rebuild costs. Construction costs have risen sharply; a limit set three years ago is likely short. This is separate from your home's market value.
- Add water back-up at the highest limit offered.
- Add ordinance or law, especially on an older house.
- Schedule valuables above the category sub-limits.
- Check animal liability if you have a dog.
- Confirm your deductible is money you actually hold. A high deductible you cannot fund is a deferred problem. See how a deductible works on a home claim.
- Read the renewal packet. Terms change there, quietly, and this is how most of these gaps appear.
Frequently Asked Questions
Is mould covered?
If it results from a covered event, usually yes, often subject to a sub-limit. If it results from a long-standing leak or poor ventilation, no. Cause and duration decide it.
What about a slow leak I could not see?
Generally excluded under seepage provisions regardless of visibility. Some carriers offer limited hidden water damage coverage as an endorsement.
Are EV chargers and solar panels covered?
Permanently installed equipment usually falls under other structures, which is typically capped at 10% of your dwelling limit. Verify that sub-limit if you have significant installed equipment.
Does my policy cover a home office?
Personal use of a computer, yes. Business liability, client visits and business equipment above a low cap, generally no.
What if my insurer non-renews me?
Non-renewals have become common in high-risk regions. Start shopping immediately, ask your regulator about your state's residual market or FAIR plan, and do not let coverage lapse — a gap complicates every future application. Your state insurance department can point you to the available options.
Should I file small claims?
Usually not. Claim history affects renewal pricing and availability, and in a tightening market it can affect whether you are offered renewal at all. See why your premium rose.
Is spoiled food after a power cut covered?
Often, subject to a modest sub-limit, and sometimes only when the outage results from a covered peril. See what home insurance covers for power outages.
My claim was denied. Now what?
Get the reason in writing with the policy provision cited, request the full claim file, and appeal. See handling a denied home insurance claim.
The Short Version
The gaps that ruin people are not exotic. They are the roof settling on a depreciation schedule, a percentage deductible nobody calculated, water coming from the wrong direction, and a dwelling limit set before construction costs climbed.
Three things this week. Find your wind and hail deductible and convert it to dollars. Ask your agent how your roof settles and at what age that changes. Add water back-up coverage at the highest limit offered — it is the cheapest meaningful protection on the list.
And read the renewal packet next time it arrives. Almost every gap described here appeared in one.
Sources and Editorial Note
Roof settlement schedule structures, terminology and typical age bands reflect carrier endorsement practice documented through 2026; percentage wind and hail deductible figures reflect regional market reporting for 2026. Claim frequency and peril data draw on the Insurance Information Institute. NFIP coverage limits are $250,000 for the structure and $100,000 for contents, with a standard waiting period before coverage takes effect.
Policy forms, endorsements, sub-limits and exclusions vary substantially by carrier and by state, and terms change at renewal. This article is general information, not advice on your own policy — confirm every point above against your declarations page and endorsements, and contact your state insurance department for complaints or for information on residual market options.
