Glossary

Sublimit

A cap on payment for one type of loss or coverage that is lower than the main policy limit, such as a set dollar amount for mold or sewer backup.

Also called: sub-limit, limit within a limit, coverage sublimit

A sublimit is a smaller limit that applies to a particular kind of loss, even though a larger limit exists for the coverage as a whole. It is the insurer's way of covering a risk in part, without giving it the full limit. Water backup, mold, fungi and rot, and some theft categories are the usual places to find sublimits.

Here is a hypothetical case. Your dwelling limit is $300,000, but the policy caps mold remediation at $10,000. A covered leak leads to a $40,000 mold cleanup. The sublimit, not the $300,000 limit, controls: the most the policy pays for the mold portion is $10,000. A sewer backup endorsement works the same way, often written with its own limit that you choose.

Sublimits can sit inside the main limit or be paid in addition to it, depending on the coverage. A sublimit is separate from a deductible. The deductible is what you pay first; the sublimit is the ceiling on what the insurer pays.

Your declarations page and endorsements list the sublimits that apply to you, though some live only in the form itself, so ask your agent for a list. The guide to policy limits and sublimits and the special limits of liability entry cover the common ones.

Last reviewed October 10, 2026

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Related terms

Policy limit The most an insurer will pay for a covered loss under one coverage, set separately for the house, other structures, belongings, living costs and liability. Special limits of liability Low dollar caps on categories such as cash, jewelry, firearms, silverware and business property that apply no matter how high your belongings limit is. Endorsement A written change attached to a policy that adds, removes or alters coverage, limits or conditions, and controls over the base form wherever the two conflict. Water backup coverage An optional add-on that pays for damage when water or sewage comes up through drains or sewers, or when a sump pump fails or overflows. Mold exclusion Policy wording that removes or caps coverage for mold, fungus and wet rot, usually leaving a small limit for growth that follows a covered water loss.

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