Afterloss The first hour

Why is mold coverage so low on my policy?

Safe for homeownersWithin the conditions described on this page.

Because mold is not covered by your dwelling limit. Most policies carry an endorsement that first excludes fungi, wet or dry rot and bacteria, then gives back a limited amount with its own aggregate cap. That cap applies no matter how large your dwelling coverage is, and mold is frequently excluded entirely when it results from long-term neglect rather than a covered loss.

Applies regardless ofDwelling limit
ISO formHO 04 26
Your numberDeclarations

The short version

  • The mold cap is separate from, and not drawn out of, your dwelling limit.
  • It arrives via an ISO endorsement, commonly HO 04 26, that excludes then gives back.
  • Coverage usually also requires the mold to result from a sudden covered loss, not from neglect.
  • Your declarations page carries your actual number. No figure quoted online is evidence about your policy.

The mechanism has a form number

On most policies the cap arrives through the ISO endorsement HO 04 26, “Limited Fungi, Wet or Dry Rot, or Bacteria Coverage” (HO 04 27 is the companion form). It does two things in order:

  1. It excludes loss caused by or resulting from fungi, wet or dry rot, or bacteria.
  2. It then gives back a limited amount, capped at an aggregate figure stated in the endorsement or on your declarations page.

That cap is not a percentage of your dwelling limit and is not drawn from it. A policy with $400,000 of dwelling coverage can carry a mold cap in the low thousands.

Look for “HO 04 26” or the words “limited fungi” on your declarations page. That is where your number is.

Industry sources describe common sublimits in the $1,000 to $10,000 range, with endorsed options around $25,000 or $50,000 available from some carriers. Treat those as ranges reported by the market, not as your limit.

The second condition: how the mold got there

The cap is only half of it. Coverage usually also depends on the mold resulting from a sudden, covered peril — the burst pipe, the storm damage, the firefighting water.

Mold that grew because a leak went unrepaired for months tends to fall on the maintenance side of the line, where policies do not respond at all. This is why the phrase “resulting from a covered loss” is worth looking for in your own policy language, and why when the water started matters as much as the fact that there is mold now.

What this means for your claim

Put the two conditions together and the conclusion is uncomfortable but useful: mold is the peril your insurance is least likely to cover fully, and also the one most avoidable by acting quickly.

EPA's guidance is that drying wet materials within 24 to 48 hours means that in most cases mold will not grow. Drying that starts immediately and is documented to a moisture goal is the intervention that keeps the loss inside the part of the policy that responds properly.

Which makes drying a financial decision, not only a technical one. Every hour of delay moves damage from the well-covered bucket into the capped one.

Common mistakes

  • Assuming the dwelling limit stands behind mold remediation. It generally does not.
  • Delaying drying until the claim is approved. The delay is what creates the uncovered portion.
  • Not documenting moisture readings, which leaves no evidence the drying was ever adequate.
  • Treating a long-running leak as a sudden loss. That distinction is what the exclusion usually turns on.

Common follow-up questions

How much mold coverage do I have?

Only your declarations page answers that. Look for a line naming fungi, mold or microbial matter. Sublimits vary by carrier and by state, and any universal figure quoted online is not reliable.

Can I buy more?

Often yes. Many carriers offer increased limits on the fungi endorsement. If your home has any history of water intrusion, this is usually a cheaper conversation before a loss than after one.

Sources

Every source cited on this page

  1. T1A Brief Guide to Mold, Moisture and Your Home — US EPA (accessed 2026-08-22)
  2. T1Mold Cleanup in Your Home — US EPA (accessed 2026-08-22)
  3. T1About Mold and Health — CDC (accessed 2026-08-22)
  4. T1Policy Terms and Coverage — FEMA / NFIP (accessed 2026-08-22)
  5. T1State insurance departments (directory) — NAIC (accessed 2026-08-22)
Written by: PLACEHOLDER — Claims ReviewerReviewed by: PLACEHOLDER — Claims ReviewerLast reviewed:

This page is general information, not insurance, legal or medical advice. Your policy governs your claim. Nothing here assesses your specific loss.