If your foundation claim was denied, you almost certainly met the Earth Movement Exclusion — the single most important clause in your homeowners policy when it comes to foundations.
The Earth Movement Exclusion
The standard ISO HO-3 policy specifically excludes "settling, cracking, shrinking, bulging or expansion" of foundations and walls, along with earthquakes, landslides, and other earth movement. Because soil movement and expansive clay cause the majority of foundation problems, most foundation damage is excluded before you even file.
Insurance covers sudden, accidental events — not gradual, predictable deterioration. Soil slowly shifting under a house is treated as a maintenance risk, not an insurable accident.
The covered-peril exception
The same policy covers foundation damage when a named peril is the cause: a burst pipe, fire, windstorm, a falling tree, a vehicle, or an explosion. The damage is the same crack — what matters is the cause. If a plumbing leak undermined your foundation, that's a very different claim from clay soil swelling, even if the visible damage looks identical.
Should you file?
If the cause is excluded, filing rarely helps — and a denied claim still lands on your CLUE loss-history record, which insurers use and which can raise your premium. If a covered peril caused the damage and the repair exceeds your deductible, document everything, get an engineer's report tying the damage to the event, and file promptly.
Based on the standard ISO HO-3 form and guidance from the Insurance Information Institute and IRMI. See our methodology; confirm specifics with your insurer or state Department of Insurance.