Burst Line, Hidden Rot, and a Code Upgrade on a 1928 Colonial
The Kims own a 1928 colonial insured on an HO-3: Coverage A $420,000, Coverage C $210,000, a $2,500 deductible, and a mold endorsement capping mold remediation at $10,000. In February a supply line to the second-floor tub bursts while the family is home and the heat is on; roughly 900 gallons escape before the water is shut off, ruining two ceilings and a hallway floor. The carrier's contractor bids $52,000 to dry and repair. When the ceiling is opened, the contractor finds extensive rot and black mold in the subfloor and joists behind the tub. The plumber says the tub drain had been seeping for at least eighteen months. Mold remediation is bid at $28,000, and the contractor attributes $9,000 of the repair bid to replacing rot-damaged framing traceable to the drain seep. About $1,500 of tear-out is needed to reach the burst supply line. The town inspector will not sign off unless the knob-and-tube wiring exposed in the opened wall is replaced, at $9,400. There is no separate ordinance or law endorsement. The Kims want everything paid but the deductible.
1. Sort the four cost buckets - the $52,000 repair, the $28,000 mold, the $1,500 tear-out, and the $9,400 wiring - into covered and uncovered, with the policy reasoning for each.
Read the worked answer
$52,000 repair (in part). Accidental discharge from a plumbing system is a named peril on the HO-3, and the freezing exclusion does not apply because the home was occupied and heated. But $9,000 of the bid replaces framing rotted by an eighteen-month drain seep. The HO-3 excludes constant or repeated seepage over a period of time, and excludes rot and wear and tear. That $9,000 leaves the covered column; the roughly $43,000 balance tied to the burst is covered.
$28,000 mold. Mold is excluded, then given back by endorsement up to $10,000 - and only for mold resulting from a covered loss. Mold caused by the burst is covered within the $10,000 cap. Mold in the same cavity from the excluded seep is not. Have the remediator produce a protocol allocating the work by cause before you commit to a number.
$1,500 tear-out. The HO-3 pays the reasonable cost to tear out and replace building parts needed to reach the system or appliance from which water escaped, subject to its own $10,000 limit. Tear-out to reach the burst line is covered; any tear-out to reach the seeping drain is not, because the source itself is excluded.
$9,400 wiring. The HO-3 provides ordinance or law coverage as an additional amount equal to 10% of Coverage A - $42,000 here - for increased costs of code-required construction on a covered loss. The inspector's demand is triggered by the covered wall opening, so it falls inside that sublimit; only the share attributable to the excluded seepage repair comes out.
2. Show the payment calculation, including where the deductible and the sublimits apply.
Read the worked answer
Assume for the calculation that the contractor's allocation is confirmed: $9,000 of rot framing is seep-attributable.
| Component | Amount | Treatment |
|---|---|---|
| Covered building repair | $43,000 | Coverage A, RCV |
| Tear-out to reach burst line | $1,500 | Within the $10,000 tear-out limit |
| Mold remediation, covered portion | $10,000 | Capped by endorsement |
| Wiring (ordinance or law) | $9,400 | Within the $42,000 (10% of A) sublimit |
Gross covered: $63,900. The $2,500 deductible applies once, per occurrence, to the Coverage A loss - not separately to the mold, tear-out, and ordinance items, which are part of the same occurrence. Net payable on an RCV basis: $61,400, and no component approaches the Coverage A limit.
Three cautions before the check goes out:
- Mold is a sublimit, not additional insurance; do not let the $10,000 be added on top of a mold-inclusive repair figure, or you pay twice for the same drywall.
- If the Kims have not completed repairs, pay actual cash value first and hold depreciation for release on completion, with the holdback stated in writing.
- If the carrier and the Kims disagree about the size of the seep-attributable share, that is an amount-of-loss dispute - the appraisal clause is available. If they disagree about whether mold is covered at all, that is coverage, and appraisal does not reach it.
3. Draft the substance of the denial letter for the excluded items. What must it contain to survive a Maine review?
Read the worked answer
A partial denial must be written, itemized, and tied to the form. It should:
- State what is paid - each covered component with its figure, the deductible, and any depreciation holdback with the conditions for release.
- State what is not paid and why - the $9,000 of seep-related rot and the associated mold, quoting the constant-or-repeated-seepage exclusion and the rot/wear-and-tear exclusion, with the form edition number.
- Explain the mold outcome precisely - do not write "mold is excluded." Write that mold is excluded but covered up to $10,000 when it results from a covered loss, that $10,000 has been applied to the burst-related remediation, and that remediation attributable to the long-term drain seep is outside the endorsement. Attach the remediator's allocation.
- Explain the ordinance or law computation - 10% of Coverage A equals $42,000, the inspector-triggered wiring is within it, and identify any portion disallowed because it pairs with the excluded repair.
- Preserve remedies - appraisal for amount-of-loss disputes, the Bureau of Insurance consumer complaint route, and the insured's right to submit additional documentation.
The Maine fair claims practice standards require a written explanation of the basis for denying or reducing a claim and prompt handling once liability is clear; an itemized letter with the forms cited does that. Send it before you release the undisputed payment, not after, and keep the causation allocation in the file.