---
title: "Does Builders Risk Cover Sewer Backup?"
description: "Sometimes, under a limited sewer or drain backup extension—the cited ISO form sets a per-occurrence limit and maintenance conditions; surface flood and groundwater may be treated separately."
canonical: "https://spot.insure/insurance-faq/builders-risk/does-builders-risk-cover-sewer-backup"
page-type: "faq-question"
updated-at: "2026-09-25"
---

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# Does Builders Risk Cover Sewer Backup?

Sometimes, under a limited sewer or drain backup extension—the cited ISO form sets a per-occurrence limit and maintenance conditions; surface flood and groundwater may be treated separately.

Sometimes, under a limited sewer or drain backup extension. The cited ISO form sets a per-occurrence limit and maintenance conditions; surface flood and groundwater may be treated separately. It also conditions coverage on maintenance of pumps and drains and excludes certain failures. That provision does not mean every sewer-related loss is insured. Check whether the quote includes the extension, its cap and deductible, sump-pump conditions, water exclusions, and whether the damaged property is covered. Distinguish sewer backup from surface flood, which may need different coverage. The ISO specimen’s sewer and drain extension is for covered project property and includes maintenance conditions; it does not insure every part failure or the cost to replace a failed pump. Ask whether the source was drain backup, surface flood, or groundwater, since the contract may treat them separately. Verify the sublimit, deductible, maintenance records, and any flood endorsement.

## Related Questions

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## Related Coverage

- [Builders risk](https://spot.insure/coverage/builders-risk)

## Sources

1. [Builders Risk Coverage Form](https://assets.touchpointmarkets.com/e8/58/dec27c1b462c8227b4693fb8ac81/ih-00-70-05-17-builders-risk-coverage-form.pdf). Insurance Services Office, Inc.; hosted by Touchpoint Markets; IH 00 70 05 17, A.1.c and A.2 pp. 1–2; A.3 and A.4 pp. 2–5; A.5 and A.6 pp. 5–8; B.2–3 pp. 10–11; C–E pp. 12–13; copyright 2017, illustrative specimen. Accessed 2026-09-25.

More answers: [Builders Risk Insurance FAQ](https://spot.insure/insurance-faq/builders-risk).

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