Why the cause decides the coverage
A typical Ohio homeowners policy treats basement water in very different ways depending on the source:
- Sudden pipe or appliance discharge is usually covered under the main policy, subject to the deductible and the policy’s conditions.
- Sewer or drain backup and sump pump failure are usually excluded unless you bought a water backup endorsement — and that endorsement normally has its own limit, often $5,000 to $25,000.
- Surface water and river flooding are excluded from homeowners policies; that’s what NFIP or private flood insurance is for, and flood policies limit basement coverage.
- Long-term seepage is commonly excluded as wear, maintenance or repeated leakage.
What the calculator assumes
It applies the deductible once, caps a backup loss at the endorsement limit, and treats flood and seepage as outside the homeowners policy. For flood it applies the limit you enter, but real flood policies restrict which basement items are covered, so the flood result is optimistic. Policies differ; your endorsement may cover the deductible differently or include mitigation in the limit.
Where appraisal fits
Appraisal can settle how much a covered basement loss costs, but not which cause applies. If the insurer says the water was flood rather than backup, that’s a coverage question. Read more on our water damage appraisal page.
Questions about this tool
Is a sump pump failure the same as sewer backup?
Many endorsements group them together as water that backs up through drains or overflows from a sump. Read the endorsement title and wording on your own policy.
Does the endorsement limit include water extraction?
Often yes — dry-out and cleanup usually come out of the same limit as repairs, which is why small limits run out fast in finished basements.
Can appraisal raise my backup sublimit?
No. Appraisal sets the amount of loss, but the policy limit still caps the payment. It can matter when the true loss is disputed and still under the limit.