What does homeowners insurance NOT cover?

Standard homeowners insurance excludes floods, earthquakes, routine maintenance, sewer backup, and normal wear and tear. These are among the most common reasons claims are denied — and each requires separate coverage.

A standard homeowners policy (the HO-3 form, which covers most U.S. owner-occupied homes) is a named-peril policy for personal property and an open-peril policy for the dwelling structure — but both versions exclude the same significant categories of loss. Understanding what's NOT covered before you file a claim prevents the frustration of expecting a payout that won't come. The NAIC's homeowners insurance guide lists standard exclusions insurers are permitted to apply.

The most common standard exclusions

Flood damage: One of the most misunderstood exclusions. Water that enters from outside (rising rivers, storm surge, surface flooding) is excluded. A separate National Flood Insurance Program (NFIP) policy or private flood policy is required.
Earthquake damage: Ground movement — including landslide and earth settlement — is excluded. Separate earthquake coverage is available as a rider or standalone policy, and is especially important in CA, OR, WA, and the New Madrid Seismic Zone.
Sewer or drain backup: If a backed-up sewer or drain floods your basement, standard policies exclude it. A sewer backup endorsement (typically inexpensive) covers this.
Routine maintenance and wear-and-tear: A policy covers sudden and accidental losses, not gradual deterioration. A roof that leaks because it's 25 years old is a maintenance issue, not a covered claim.
Pest infestation: Termite damage, rodent damage, and mold resulting from neglect are excluded as maintenance-related.
Power failure: Loss of food in a freezer because of a grid outage is not covered unless the outage was caused by an on-premises covered peril (e.g., a covered fire damaged your power connection).
Home business losses: Business equipment used professionally in the home and business liability are typically limited or excluded — a business owner's policy or endorsement is needed.
High-value items above sublimits: Jewelry, fine art, collectibles, and firearms may be covered only up to sublimits (often $1,000–$2,500). A scheduled personal property endorsement broadens coverage for specific high-value items.

Intentional acts and neglect

Intentional damage — whether by the policyholder or a household member — is never covered. And losses resulting from failure to maintain the property are treated as neglect, not accident. Insurers will investigate whether a loss is "sudden and accidental" (covered) or the result of deferred maintenance (not covered). Document your home's condition with periodic photos to support any future claim that a loss was sudden.

The flood exclusion is the largest gap for most homeowners

Standard homeowners insurance never covers flood. FEMA reports that just one inch of floodwater can cause $25,000 in damage. Even if you don't live in a high-risk flood zone, FEMA data shows that about 20% of flood claims come from moderate-to-low risk areas. Flood insurance through the NFIP or private carriers typically costs $500–$1,000 per year for most single-family homes.

What regulators say about homeowners exclusions

Standard homeowners insurance policies do not cover flood damage. Separate flood insurance is available through FEMA's National Flood Insurance Program (NFIP) or private insurers. — FEMA — Flood Insurance
Earthquake damage is typically excluded from standard homeowners insurance; a separate earthquake policy or endorsement is required. — III — Earthquake Insurance
Losses resulting from neglect, lack of maintenance, or gradual deterioration are excluded from coverage under standard homeowners policies. — NAIC

Key takeaways

Floods and earthquakes are the two biggest exclusions — each needs a separate policy.
Routine maintenance, wear-and-tear, and neglect-related losses are never covered.
Sewer backup requires an inexpensive add-on endorsement; standard policies exclude it.
High-value items (jewelry, art, collectibles) may be covered only up to low sublimits — schedule them separately.
Intentional damage and business-use losses also fall outside a standard homeowners policy.

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