- • Commercial property runs on ISO forms (CP 00 10 for the building, CP 00 30 for business income), not the HO-3.
- • The signature commercial trap is coinsurance: insure the building for less than the required percentage of its value and the carrier cuts every claim proportionally.
- • Lost income is its own coverage with its own rules: a 72-hour waiting period, a "period of restoration," and a documentation battle over revenue you never earned.
- • Condos split the loss between a master policy and each unit owner's HO-6. Florida's post-Surfside reserve laws now drive the special assessments.
- • Nearly every large commercial hurricane claim ends in appraisal: a private valuation process most policyholders enter without knowing the rules.
Find your loss. Find the fight.
The four mechanisms an HO-3 never carries
Coinsurance, business income, layered policies, and appraisal are why a commercial hurricane claim behaves differently. The left column is how a homeowners claim works. The right is what changes once the building is insured as a business.
A homeowners policy pays the loss up to the limit. There is no proportional penalty for insuring to less than full value.
The loss is the physical property. There is no separate coverage for the money the house would have earned.
A single homeowners policy and a single adjuster handle the whole loss.
Most homeowners claims settle on replacement cost with a matching rule and no valuation gamesmanship over intangibles.
Insure the building for less than the required percentage of its Total Insured Value and every payment is cut proportionally.
Business income and extra expense are separate coverages with a waiting period, a period of restoration, and a documentation battle.
Property, business income, flood, ordinance-and-law, and (for condos) a master policy over dozens of unit-owner HO-6s.
Large commercial disputes go to appraisal: each side names an appraiser, an umpire decides, and the amount is binding.
Every mechanism on the right is a place the carrier can pay less than the loss. Each is a whole guide in this library.
Based on typical ISO Commercial Property forms (CP 00 10, CP 00 30) versus the ISO HO-3. Forms vary by carrier and state. Drafted, not verified. Read your policy.
Three ways a commercial payout shrinks
The coinsurance penalty
You insured the building for less than the required percentage of its value, so the carrier cuts every claim by the same proportion. That penalty never touches a homeowners policy.
The coinsurance math → 02The income you can't photograph
Business-income loss is not on a wall. It is the revenue you would have earned. Proving it means financials, projections, and forensic accounting the carrier is built to dispute.
Proving lost income → 03The code-upgrade gap
Ordinance-and-law coverage pays to rebuild to current code, but only up to a percentage limit. On a large hurricane loss, the reconstruction cost blows past it fast.
Ordinance & law →Commercial policies pay less than you think, on purpose.
Commercial property policies carry cost-shifting mechanics residential policies do not. Coinsurance clauses penalize any building insured below the required percentage of replacement cost. Percentage named-storm deductibles reach 2 to 5 percent of insured value, a six-figure number before the carrier pays anything. Business income coverage rides on covered physical damage and a restoration period the carrier controls. None of these appear in the loss; they were written into the policy the day it bound.
The loss type sets the fight: a business interruption claim turns on the income period and continuing expenses, an HOA or condo claim on the master-policy line and matching, and every property claim on the physical trigger, which is why wind and hurricane coverage and the wind-versus-flood split decide so many losses. Carriers depreciate aggressively, apply the coinsurance penalty on top, and read the restoration period short; a denied or underpaid claim usually traces to one of those moves. Delay or lowball past statutory deadlines can support a bad-faith claim, and a public adjuster can dispute valuation, coinsurance, and the income model together. The free review below reads your policy limit against replacement cost.
Commercial claim underpaid, delayed, or headed to appraisal?
Upload the policy declarations, the estimate, and any reservation-of-rights or appraisal demand. You'll get a straight read on the coinsurance math, the business-income period, and whether the carrier's number holds up.
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