Commercial Property Insurance: What It Covers and How the Forms Work

Commercial property insurance pays for direct physical loss of or damage to covered property at your described premises, caused by a covered cause of loss. What counts as "covered property" is defined by a coverage form, most commonly the Building And Personal Property Coverage Form, and which perils are covered is defined by a separate causes of loss form: Basic, Broad, or Special. The two forms together, plus your valuation and coinsurance choices, determine what a claim actually pays.

Here's how the modular ISO Commercial Property Policy fits together, and where the settlement surprises hide.

Commercial Property Insurance

Commercial property insurance pays for direct physical loss of or damage to covered property at a described premises, caused by a covered cause of loss. What a claim actually pays depends on the coverage form, the causes of loss form, and the policy's valuation and coinsurance choices.

How is a commercial property policy built?

Since ISO's 1985 Simplification Program, commercial property policies have been assembled from modular parts: Common Policy Declarations, Common Policy Conditions, Commercial Property Coverage Part Declarations, Commercial Property Conditions, one or more coverage forms, one or more causes of loss forms, and endorsements. The key insight is the division of labor.

The coverage form (usually the Building And Personal Property Coverage Form, CP 00 10) defines what property is insured, the additional coverages and extensions, and the conditions. The causes of loss form defines which perils are insured. The coverage form provides the same coverages regardless of which causes of loss form is attached, so choosing the peril form is a separate, deliberate decision.

What property does the Building And Personal Property form cover?

The insuring agreement is one sentence: the insurer pays for direct physical loss of or damage to Covered Property at the premises described in the Declarations, caused by or resulting from any Covered Cause of Loss. Covered Property comes in three categories, each with its own limit:

• Building: the described building or structure plus completed additions, fixtures (including outdoor fixtures), permanently installed machinery and equipment, and personal property used to maintain or service the building (fire extinguishers, outdoor furniture, floor coverings, appliances). If not otherwise insured, it also includes additions under construction and building materials within 100 feet of the premises.
• Your Business Personal Property: furniture and fixtures, machinery and equipment, stock, other owned business property, your labor or materials on others' property, your use interest as a tenant in improvements and betterments, and leased property you're contractually required to insure. It's covered in or on the described building, or in the open (or in a vehicle) within 100 feet.
• Personal Property of Others: property of others in your care, custody, or control, at the described premises, when a limit is shown for it.

If your business is a tenant legally liable for damage to premises you occupy, note that the coverage form insures your insurable interest, not your legal liability, the Legal Liability Coverage Form exists for that gap. And buildings under construction belong on a builders risk policy, not this form.

What are the Basic, Broad, and Special causes of loss forms?

Every commercial property policy must include a causes of loss form. The three forms build on each other:

The Special Form's open perils structure means coverage is defined by its exclusions and limitations, anything not excluded or limited is covered. That's why reading the Special Form's five groups of exclusions and its limitations matters more than reading its insuring agreement. Windstorm or hail, vandalism, sprinkler leakage, and theft can each be individually excluded by endorsement, so check your schedule.

How does coinsurance work, and how does the penalty bite?

Coinsurance is a rating and underwriting concept designed to make you insure to full value. If you carry insurance equal to at least the coinsurance percentage (usually 80 percent or more) of the property's value at the time of the loss, the insurer pays the full loss up to the limit. Carry less, and a penalty applies via the "Did over Should" formula:

Amount carried (Did) ÷ Amount required (Should) × Loss = Settlement (minus deductible)

The coinsurance test is applied at the time of the loss, not at policy inception. If you set limits based on today's values and construction costs rise, you can drift into a penalty position mid-term. Anticipate what the property will be worth a year from now, or use Agreed Value, which suspends the coinsurance clause (with an expiration date, never longer than 12 months) once the underwriter and insured agree an adequate limit is carried.

Actual cash value vs. replacement cost: which valuation applies?

Actual cash value (ACV), replacement cost minus depreciation, applies by default. Replacement cost (RC), which settles losses without deduction for depreciation, applies only when activated with an "X" on the Declarations for the items to be covered. If that box isn't marked, depreciation comes out of every settlement.

A few mechanics worth knowing:

• Even with RC triggered, you may elect an ACV settlement first and still claim the additional replacement cost amount, as long as you notify the insurer within 180 days of the loss.
• Under RC, the policy pays the least of the applicable measures, it is not a blank check, and repairs must actually be made for the RC portion to be owed.
• RC does not include increased costs from building-code enforcement, ordinance or law exposure needs its own endorsement.
• RC can be extended to personal property of others only if the base RC option is shown as applicable and the extension is added.

What commercial property insurance does not cover

Three gaps deserve their own planning:

• Excluded perils: flood and earth movement, among others, are excluded on every causes of loss form and need separate policies or endorsements.
• Indirect loss: this policy pays to rebuild your building and replace your stock, but not the income you lose while the doors are closed. That's the job of business income insurance, which attaches to the same policy structure and uses the same causes of loss forms.
• Liability to others: property insurance protects your property. Liability for bodily injury or property damage to others belongs to your general liability policy.

This guide is for educational purposes and summarizes standard ISO policy language. Your policy's specific terms, conditions, and endorsements control. Talk to a licensed broker about your actual exposures.