PROPERTY TERMS & CONCEPTS · 5 MIN READ
Deductibles, Sublimits, and Additional Coverages
Deductible mechanics look simple until the exam stacks them. A per-occurrence deductible applies fresh to every loss; an annual aggregate deductible caps the insured's total retention for the year. When both exist, subtract the per-occurrence deductible from each loss while tracking cumulative retention — once retained amounts reach the aggregate, the insurer pays subsequent losses in full. Worked example from the standard pattern: with a $25,000 per-occurrence and $50,000 aggregate deductible, losses of $30,000, $40,000, and $60,000 produce insurer payments of $5,000, then $15,000 (aggregate now exhausted), then the full $60,000 — $80,000 total. A disappearing (vanishing) deductible shrinks as the loss grows, vanishing entirely above a threshold, in contrast to a standard flat deductible. Remember, too, that the standard commercial property limit applies per occurrence: an unendorsed partial-loss payment does not shrink the limit available for a later, separate occurrence the way an aggregate-limited liability policy would, though specialty catastrophe structures do impose aggregates and charge reinstatement premiums. Additional coverages are small automatic grants layered onto the main insuring agreement, each with tested dollar mechanics. Debris removal under CP 00 10 is normally included within the limit of insurance, but a supplemental $25,000 becomes available when either the direct loss plus debris expense exceeds the limit, or debris expense alone exceeds 25 percent of the direct loss plus deductible. Fire department service charges are paid as an additional coverage when the insured is contractually or ordinance-bound to pay them. Pollutant cleanup and removal carries an annual aggregate sublimit. Newly acquired or constructed property is covered automatically for a short window — with a 30-day reporting requirement — so the insured can buy a building on Tuesday without a gap. Reasonable repairs coverage pays for measures taken to protect property from further damage after a loss, a restorative and protective grant rather than a blank check for upgrades. Personal lines carry parallel sublimits. The HO-3 trees, shrubs, and plants additional coverage is capped at 5 percent of Coverage A in the aggregate and $500 for any single tree, shrub, or plant — and only for a short list of perils that pointedly excludes windstorm. Personal property usually travels with the insured worldwide, subject to an off-premises cap tied to a percentage of Coverage C (10 percent is the classic HO figure). These sublimit numbers are pure memorization, and the exam asks them nearly verbatim.
Key rules
Aggregate deductibles cap annual retention; once met, later losses are paid in full
Apply the per-occurrence deductible to each loss while running a cumulative retention tally; when the tally reaches the aggregate, the deductible stops applying.
Why the exam cares: Multi-loss math questions require tracking both deductibles simultaneously; dropping the tally is the common error.
Supplemental debris removal adds $25,000 under two alternate triggers
The extra amount applies when direct loss plus debris expense exceeds the limit, or when debris expense alone exceeds 25 percent of the direct loss plus deductible.
Why the exam cares: The two-trigger structure is tested directly, as is the fact that debris removal is otherwise inside the limit.
The standard commercial property limit is per occurrence and survives prior partial losses
Unlike liability aggregates or specialty catastrophe layers with reinstatement premiums, the unendorsed CP 00 10 limit is not drawn down for future separate occurrences.
Why the exam cares: Exams contrast property per-occurrence limits with liability aggregate mechanics to catch cross-line confusion.
Trees, shrubs, and plants are capped at 5% of Coverage A and $500 per item
The HO additional coverage applies only to listed perils such as fire, vandalism, and theft — windstorm damage to trees is not covered.
Why the exam cares: Both the dollar caps and the missing windstorm peril are frequent single-fact questions.
Newly acquired property is covered automatically only for a reporting window
The additional coverage grants interim protection with a 30-day reporting requirement, after which unreported property is uninsured.
Why the exam cares: The exam tests the automatic-but-temporary nature of the grant and the reporting deadline that ends it.
Numbers to memorize
- $25,000 — supplemental debris removal limit above the limit of insurance under CP 00 10
- 25% of direct loss plus deductible — alternate trigger for supplemental debris removal
- 5% of Coverage A and $500 per item — HO-3 trees, shrubs, and plants caps
- 30 days — reporting window for newly acquired property additional coverage
- 10% of Coverage C — classic HO cap on personal property usually located at another residence
Common traps
- Applying the per-occurrence deductible after the aggregate is exhausted — once cumulative retention hits the aggregate, later losses are paid without deduction.
- Assuming debris removal is unlimited — it lives inside the limit of insurance, with only $25,000 of supplemental room under its two triggers.
- Expecting windstorm coverage for downed trees — the HO trees-and-shrubs grant covers a short named-peril list that excludes windstorm.
- Treating a property limit like a liability aggregate — a paid partial loss does not reduce the per-occurrence property limit for a later separate occurrence.
Build a one-page sublimit sheet — debris removal, trees, off-premises, newly acquired — and drill it the week before the exam; these are pure recall points that should be free marks.
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