Is My Water Damage or Mold Covered by Insurance?

Coverage hinges almost entirely on the cause. Tell us what happened and we’ll tell you whether a standard homeowners policy likely covers it — or whether you need separate flood or sewer-backup coverage.

Quick answer

Standard homeowners insurance covers water damage that is sudden and accidental from inside the home — a burst pipe, an overflowing appliance. It generally excludes gradual leaks (a maintenance issue), outside flooding (needs separate NFIP flood insurance), and sewer backups (needs a backup endorsement). Mold is usually covered only when it stems from a covered, sudden event — and often with a dollar cap.

How this calculator works

Insurance coverage for water and mold turns on the cause of loss. Sudden, accidental damage from inside the home is the classic covered scenario; damage you could have prevented (gradual leaks), or that comes from outside (flooding) or up the drain (sewer backup), falls outside a standard policy and needs separate coverage. Mold rides on the same rule — covered only if it followed a covered event, and usually capped.

What changes the number

Sudden vs gradual is the dividing line — insurers exclude damage from deferred maintenance.
Outside flooding is never covered by a standard homeowners policy — it needs NFIP or private flood insurance.
Sewer or drain backup needs a specific water-backup endorsement most policies don’t include by default.
Even when covered, mold is often capped (commonly $1,000–$10,000) — check your policy’s mold limit.

Frequently asked questions

Is water damage covered by homeowners insurance?

Sudden, accidental water damage originating inside the home — a burst pipe, an overflow — is generally covered. Gradual leaks and outside flooding usually are not; flooding needs a separate flood policy.

Does homeowners insurance cover mold?

Usually only when the mold results from a covered, sudden event (like a burst pipe), and often with a dollar cap. Mold from gradual moisture, humidity, or neglect is normally excluded.

What if my basement flooded from heavy rain?

Outside flooding — including heavy rain and groundwater entering the basement — is not covered by a standard homeowners policy. You’d need NFIP or private flood insurance for that.