The short answer: usually not
Standard homeowners policies exclude the causes behind most foundation damage. Settlement, soil movement, expansive clay, erosion and groundwater pressure are all written out explicitly — and between them they account for the large majority of foundation repairs.
Coverage appears when a covered peril caused the damage. The textbook case is a supply line bursting under your slab: the water is sudden and accidental, so the resulting foundation damage is covered. The distinction insurers draw is sudden and accidental versus gradual and expected.
Knowing this before you file matters. A denied claim still enters your claims history, and claims history affects renewal pricing.
What’s covered and what isn’t
| Cause of damage | Typical outcome | Category | Why |
|---|---|---|---|
| Burst supply line under the slab | Usually covered | Sudden event | Sudden and accidental discharge of water |
| Sewer line backup damaging the slab | With endorsement | Sudden event | Needs a water/sewer backup rider |
| Vehicle striking the foundation | Usually covered | Sudden event | Named peril in standard policies |
| Fire or explosion damage | Usually covered | Sudden event | Named peril in standard policies |
| Falling tree damaging the foundation | Usually covered | Sudden event | Named peril, subject to deductible |
| Settlement or soil movement | Excluded | Gradual | Explicit "earth movement" exclusion |
| Expansive clay soil damage | Excluded | Gradual | Shrinking, swelling, expanding soil |
| Hydrostatic pressure / seepage | Excluded | Gradual | Groundwater exclusion |
| Flooding from outside | Needs flood policy | Separate | Excluded from all standard HO policies |
| Earthquake damage | Needs earthquake policy | Separate | Excluded from all standard HO policies |
| Poor construction or design | Excluded | Workmanship | Pursue the builder, not the insurer |
| Tree root damage | Usually excluded | Gradual | Treated as preventable and gradual |
Source: Based on standard HO-3 policy structure and the exclusions common to it. Policies vary by carrier and state — read your own exclusions section, and confirm any endorsement with your agent before relying on it. · Last reviewed July 30, 2026 · Reference data · How we compile these figures
This is general information, not insurance advice. Coverage is decided by your specific policy language, your state's regulations and your carrier's adjuster. Read your declarations and exclusions pages, and talk to your agent about your actual situation.
Why settlement is excluded in the first place
Insurance covers sudden, accidental, unexpected losses. Foundation settlement is none of those — it is gradual, predictable, and treated much the same as a roof reaching the end of its life. Every standard HO-3 policy carries an earth movement exclusion covering earthquake, landslide, subsidence and sinkholes, plus a separate exclusion for settling, shrinking, bulging or expanding of foundations, walls and floors.
The reasoning insurers give is that maintaining drainage, grading and soil conditions around a house is the owner's responsibility. Whether that is fair when your house sits on expansive clay you did not choose is a reasonable argument — and it is not one an adjuster is empowered to settle.
How to file a claim that has a chance
Claims succeed when the causal chain from a covered event to the foundation damage is documented and unambiguous. They fail when that link is assumed.
- Document the event itself. The plumber's report identifying the burst line, dated photographs, moisture readings, the police report if a vehicle was involved. This is the piece insurers actually evaluate.
- Fix the source and keep the invoice. Policies require mitigating further damage. The repair invoice also timestamps the event.
- Get your own structural engineer — $450 – $600 — and ask specifically for a written opinion tying the foundation damage to that event. Not just "the foundation is damaged," but "this damage is consistent with, and attributable to, the water release documented on this date."
- File promptly. Delay invites an argument that the damage is gradual, which is the exclusion the insurer is looking for.
- Keep every communication in writing. Phone conversations with adjusters are worth confirming by email afterward.
The engineer's report is the highest-leverage item on that list. An insurer's adjuster is evaluating causation, and an independent professional opinion on causation is the evidence that speaks to it directly.
If your claim is denied
- Get the denial in writing, with the specific policy language cited. "Not covered" is not a reason; a quoted exclusion is.
- Read that clause against your own facts. Denials sometimes cite an exclusion that does not actually match what happened.
- Request an internal appeal or reinspection. Most carriers have a formal process, and a second adjuster with your engineer's report in hand sometimes reaches a different conclusion.
- Consider a public adjuster for large claims — they work for you, typically on 5–15% of the recovery.
- Contact your state insurance department. Their complaint process is free and carriers respond to it.
Coverage worth adding before you need it
- Water/sewer backup endorsement — commonly $50 – $250 per year. Covers backups that standard policies exclude, and among the most frequently useful riders for basement homes.
- Flood insurance (NFIP or private) — required for surface flooding, which no standard policy covers. Worth pricing even outside a designated flood zone.
- Earthquake endorsement — relevant in seismic regions, and it is what covers foundation damage from ground shaking.
- Service line coverage — covers buried supply and sewer lines on your property, which are otherwise your problem entirely.
Meanwhile, most foundation repair is paid out of pocket. What that runs is in foundation repair cost, and the cost calculator will estimate your specific job. If water is the cause, basement waterproofing cost covers prevention — which is excluded from coverage precisely because it is maintenance.