7.1 Commercial Property Coverage Forms, Causes of Loss & Business Interruption

Key Takeaways

  • The ISO Building and Personal Property Coverage Form (CP 00 10) segregates real and personal property into three core categories: Building, Your Business Personal Property (YBPP within 100 feet), and Personal Property of Others.
  • CP 00 10 explicitly excludes specific real property assets from coverage, including land, retaining walls not part of a building, underground pipes/drains, and building foundations below the lowest basement floor.
  • The three ISO Causes of Loss forms establish distinct peril tiers: Basic (11 named perils), Broad (14 named perils including falling objects, snow/ice weight, and plumbing water), and Special CP 10 30 (open perils with exclusionary burden on the carrier).
  • Business Income coverage (CP 00 30) indemnifies net income (profit or loss before income taxes) plus continuing normal operating expenses (including payroll) incurred during the period of restoration.
  • The period of restoration begins 72 hours after physical damage for business income (a time deductible) but immediately for extra expense, and the 2012 CP 00 30 adds up to 60 consecutive days of Extended Business Income after operations resume.
Last updated: September 2026

Commercial Property Coverage Forms, Causes of Loss & Business Interruption

Commercial property claims represent some of the highest-stakes adjustments handled by New York public adjusters. Unlike residential policies that package coverage into pre-set percentages of the dwelling limit, commercial property insurance under the ISO Commercial Package Policy (CPP) or standalone monoline property contracts requires distinct coverage elections, tailored valuation endorsements, and customized time-element protections. Adjusting these losses requires deep familiarity with the Building and Personal Property Coverage Form (CP 00 10), the hierarchical Causes of Loss forms, and the complex accounting mechanics of Business Income and Extra Expense coverage (CP 00 30).


The Building and Personal Property Coverage Form (CP 00 10)

The foundational coverage contract for commercial real and personal property is the ISO CP 00 10. It delineates three separate, elective categories of insurable property:

1. Building Coverage

Building coverage encompasses the physical structures described on the Declarations Page, including:

  • Completed additions and extensions;
  • Fixtures, including outdoor fixtures (e.g., permanent lighting standards, signs attached to the building);
  • Permanently installed machinery and equipment (e.g., commercial HVAC units, elevators, boilers, production plant equipment anchored to structural foundations);
  • Personal property owned by the named insured used to maintain or service the building or premises (e.g., fire extinguishing apparatus, outdoor maintenance equipment, lawnmowers, snow blowers, floor scrubbers, and appliances used for refrigerating, ventilating, cooking, dishwashing, or laundering).

2. Your Business Personal Property (YBPP)

YBPP insures commercial personal property owned by the named insured and utilized in the commercial enterprise. Coverage applies while the property is located in or on the described building, or in the open (or in a vehicle) within 100 feet of the building or 100 feet of the described premises, whichever distance is greater. YBPP includes these categories:

  • Furniture and fixtures (office desks, retail display cases, modular workstations);
  • Machinery and equipment not permanently installed;
  • "Stock" (merchandise held in storage or for sale, raw materials, goods in process, and finished goods, including packaging supplies);
  • All other personal property owned by the insured and used in the business;
  • Labor, materials, or services furnished or arranged by the insured on personal property of others (e.g., repair work performed by a machine shop on a customer's equipment before the loss);
  • Improvements and betterments: fixtures, alterations, installations, or additions made a part of the building or structure that the insured occupies as a commercial tenant, acquired or made at the tenant's expense, which cannot legally be removed.

3. Personal Property of Others

Covers personal property belonging to third parties that is in the care, custody, or control of the insured, situated in or on the described building or within 100 feet of the premises. This coverage is critical for commercial bailees, such as dry cleaners, commercial repair facilities, warehousing operations, and consignment galleries. Loss payment is made for the account of the property's lawful owner, but claim adjustment is handled through the named insured.

Property Explicitly Not Covered under CP 00 10

To avoid paying for uninsurable land values or subterranean assets not exposed to standard perils, CP 00 10 excludes specific property categories unless modified by specific endorsements:

  • Land: Land, including land on which the property is located, water, growing crops, or lawns;
  • Foundations Below Grade: Foundations of buildings, structures, machinery, or boilers if their foundations are below the lowest basement floor (or below the surface of the ground if there is no basement);
  • Subterranean Utilities: Underground pipes, flues, or drains;
  • Excavations & Grading: The cost of excavations, grading, backfilling, or filling;
  • Piers, Wharves & Docks: Pilings, piers, bulkheads, wharves, or docks;
  • Retaining Walls: Retaining walls that are not part of the building;
  • Vehicles & Craft: Vehicles or self-propelled machines licensed for highway use; aircraft and watercraft;
  • Electronic Data: Valuable papers, records, and electronic data (except as provided under limited coverage extensions).

The Causes of Loss Form Hierarchy

Under the ISO commercial property architecture, the CP 00 10 coverage form does not state which perils are insured. Instead, one of three separate Causes of Loss Forms must be attached to define covered perils:

1. Causes of Loss – Basic Form (CP 10 10)

A named-perils form insuring against 11 enumerated perils:

  1. Fire
  2. Lightning
  3. Explosion
  4. Windstorm or Hail
  5. Smoke (sudden and accidental; excludes agricultural smudging or industrial operations)
  6. Aircraft or Vehicles (physical contact with building or property)
  7. Riot or Civil Commotion
  8. Vandalism (excludes theft, but covers building damage caused by the breaking in or exiting of burglars)
  9. Sprinkler Leakage (leakage or discharge from an automatic fire suppression system)
  10. Sinkhole Collapse (sudden sinking of land into subterranean cavities created by water on limestone)
  11. Volcanic Action (airborne blast, ash, dust, or lava flow; excludes earthquake/shock waves)

2. Causes of Loss – Broad Form (CP 10 20)

Includes all 11 perils covered in the Basic Form, plus three additional named perils: 12. Falling Objects: Excludes damage to personal property in the open, or damage to the interior of a building unless the roof or an outside wall is first damaged by the falling object. 13. Weight of Snow, Ice, or Sleet: Covers structural collapse and physical damage to buildings and personal property inside caused by snow/ice accumulation. 14. Water Damage: Accidental discharge or leakage of water or steam as the direct result of the breaking apart or cracking of any part of a system or appliance containing water or steam (e.g., domestic plumbing, HVAC systems). Does not cover the cost to repair the defect in the appliance itself, and excludes flood, surface water, and sewer backup.

  • Additional Broad Form Benefit: Covers abrupt structural collapse caused by specified perils, hidden decay, hidden insect damage, or weight of people/contents.

3. Causes of Loss – Special Form (CP 10 30)

The CP 10 30 is an open-perils form insuring against direct physical loss unless the loss is explicitly excluded or subject to limitations. In commercial claims adjustment, the Special Form offers immense tactical value to the policyholder because the burden of proof is reversed: the insured must only establish that physical damage occurred during the policy period; the carrier must prove that an exclusion applies.

Major exclusions subject to the Anti-Concurrent Causation (ACC) lead-in include Ordinance or Law, Earth Movement, Governmental Action, Nuclear Hazard, Utility Services, War, Water (Flood/Surge/Sewer Backup), and Fungus/Wet Rot. The form also excludes non-fortuitous deterioration, wear and tear, rust, corrosion, mechanical breakdown, smog, settling, and employee dishonest acts.

Comparison of Commercial Causes of Loss Forms

Feature / Peril GroupBasic Form (CP 10 10)Broad Form (CP 10 20)Special Form (CP 10 30)
Coverage ApproachNamed Perils (11 perils)Named Perils (14 perils)Open Perils (All-Risk)
Burden of ProofOn InsuredOn InsuredOn Insurer
Water Damage (Plumbing Leak)ExcludedCoveredCovered
Weight of Snow / IceExcludedCoveredCovered
Falling ObjectsExcludedCoveredCovered
Theft of Building ComponentsExcludedExcludedCovered (subject to sublimits)
Collapse Coverage ExtensionNot IncludedIncludedIncluded
Interior Rain LimitationN/A (Rain not a peril)Requires roof/wall breachRequires storm-created opening

Business Income and Extra Expense Coverage Form (CP 00 30)

When a catastrophic property loss occurs, the physical destruction of real and personal property is frequently eclipsed by ongoing financial losses resulting from the total or partial suspension of operations. The ISO CP 00 30 indemnifies these operational time-element losses.

Core Coverage Definitions

Business Income is defined contractually as the sum of two economic components:

Business Income Formula: Business Income = Net Income (Net Profit or Loss before income taxes that would have been earned) + Continuing Normal Operating Expenses Incurred (including payroll)

  1. Net Income: The net profit or net loss that would have been earned or incurred by the commercial enterprise had no physical loss occurred. If a business was operating at an operational loss prior to the event, that operating loss is factored into the calculation to prevent a windfall.
  2. Continuing Operating Expenses: Necessary operational expenses that must continue during the period of restoration to preserve the business enterprise (e.g., mortgage/rent obligations, debt service interest, property and liability insurance premiums, key executive and skilled staff salaries, contracted IT infrastructure fees, and real estate taxes). Expenses that cease upon suspension (e.g., raw material purchases, hourly production labor, utility usage costs) are non-continuing and are subtracted from gross revenue.

The "Period of Restoration"

The period of restoration is the defined window of time during which Business Income and Extra Expense coverage applies. Its boundaries are rigorously defined:

  • Inception:
    • For Business Income: Begins 72 hours after the time of direct physical damage caused by a covered peril. The 72-hour delay functions as a time-based deductible. (This waiting period can be reduced to 24 hours or 0 hours by endorsement).
    • For Extra Expense: Begins immediately at the moment of physical loss (no 72-hour waiting period).
  • Termination: The period ends on the date when the property at the described premises should be repaired, rebuilt, or replaced with reasonable speed and similar quality, or on the date when operations are resumed at a new permanent location, whichever occurs first.
  • Critical Public Adjuster Note: The period of restoration is governed by a theoretical standard of due diligence and dispatch. If an insurer creates unreasonable adjusting delays, bad-faith engineering disputes, or tardy advance payments that paralyze construction, the public adjuster must demand that the period of restoration be equitably expanded to reflect carrier-induced delay.

Extended Business Income (EBI)

When a business completes structural repairs and reopens its doors, customer traffic, inventory turnover, and billable revenues rarely return immediately to pre-loss levels. The standard CP 00 30 includes Extended Business Income (EBI), which begins on the date the property is repaired and operations resume, and ends when the business could restore operations to the pre-loss income level with reasonable speed, or 60 consecutive days after reopening under the 2012 edition of CP 00 30, whichever is earlier. The Extended Period of Indemnity optional coverage replaces the 60 days with a longer period shown in the declarations.

Extra Expense Coverage

Extra expenses are necessary operational costs incurred by the business during the period of restoration that would not have been incurred had there been no physical damage, spent to:

  • Avoid or minimize the suspension of business operations (e.g., leasing temporary retail space, renting mobile refrigeration trailers, installing temporary power generators);
  • Minimize the suspension of operations if the business cannot continue;
  • Repair or replace property to reduce the business income loss, but only to the extent it reduces the loss otherwise payable.

Action of Civil Authority

Civil Authority coverage applies when an order of civil authority (police, National Guard, fire marshal, municipal building inspector) prohibits access to the described premises. Crucially, this coverage requires:

  1. Direct physical damage to property other than at the described premises (e.g., an explosion damages a building two blocks away);
  2. The damaged property must be within a defined geographic radius (standard ISO forms specify within 1 mile);
  3. The civil authority action must be taken in response to dangerous physical conditions resulting from the damage or to enable emergency personnel unimpeded access;
  4. Waiting Period & Duration: Coverage for Business Income begins 72 hours after the order and continues for up to four (4) consecutive weeks (28 days).

Comprehensive Worked Calculation: Commercial Business Income Loss

To master commercial adjustment under CP 00 30, consider the following adjustment calculation for a commercial retail business in Queens, New York, that suffered a severe electrical fire on October 1.

Case Facts:

  • Property Loss Date: October 1, 2026.
  • Suspension of Operations: Total shutdown required for repairs.
  • Repair Completion / Reopening Date: December 1, 2026 (61 days).
  • Revenue Recovery Date (Return to Normal): December 31, 2026 (30 days after reopening).
  • Historical Financial Projections:
    • Projected Monthly Gross Sales: $100,000 / month ($3,333.33 / day).
    • Cost of Goods Sold (COGS - variable, non-continuing): 40% of sales ($40,000 / month).
    • Normal Monthly Operating Expenses: $45,000 / month.
      • Continuing Expenses (Rent, key payroll, debt service, insurance): $30,000 / month ($1,000 / day).
      • Non-Continuing Expenses (Hourly labor, store supplies, utilities): $15,000 / month.
    • Projected Monthly Net Profit before taxes: $100,000 - $40,000 - $45,000 = $15,000 / month ($500 / day).
  • Incurred Extra Expenses: $12,000 spent during October and November on temporary inventory storage, refrigerated trailers, and expedited shipping.

Step-by-Step Claim Calculation:

1. Calculate Period of Restoration Duration for Business Income

  • Physical loss occurs: Oct 1, 12:01 AM.
  • 72-Hour Waiting Period applies: Oct 1, Oct 2, Oct 3.
  • Covered Period of Restoration starts: Oct 4, 12:01 AM.
  • Period of Restoration ends: Nov 30, 11:59 PM (58 covered days).

2. Calculate Business Income Loss During Restoration Period

  • Daily Net Profit: $500.00 / day.
  • Daily Continuing Operating Expenses: $1,000.00 / day.
  • Total Daily Business Income Value: $500.00 + $1,000.00 = $1,500.00 / day.
  • 58 days × $1,500.00 / day = $87,000.00.

3. Calculate Extra Expense

  • Extra expenses incurred to maintain operations/salvage goods = $12,000.00 (Not subject to the 72-hour waiting period).

4. Calculate Extended Business Income (EBI)

  • Store reopens December 1. During December, gross sales are partially depressed due to customer re-acquisition: actual sales are $60,000 instead of projected $100,000 (a $40,000 gross revenue shortfall).
  • Lost Net Profit on $40,000 shortfall (15% net margin): $6,000.00.
  • Under-recovered continuing overhead: $10,000.00.
  • Total EBI Loss for 30-day window = $16,000.00.

5. Total Business Interruption Claim Settlement

Total Claim Settlement: $87,000.00 (Business Income) + $12,000.00 (Extra Expense) + $16,000.00 (Extended Business Income) = $115,000.00

Test Your Knowledge

Under the ISO Building and Personal Property Coverage Form (CP 00 10), which of the following property items is explicitly designated as 'Property Not Covered'?

A
B
C
D
Test Your Knowledge

A commercial manufacturing facility experiences a catastrophic boiler explosion on Monday at 8:00 AM, halting all factory operations. Under a standard CP 00 30 form with unendorsed provisions, when does the 'Period of Restoration' begin for Business Income coverage versus Extra Expense coverage?

A
B
C
D
Test Your Knowledge

Following a covered windstorm loss, a commercial tenant reopens its retail store after three months of reconstruction. During the first 30 days of resumed operations, customer traffic is down and net revenues are 40 percent below pre-loss projections. Under standard CP 00 30 provisions, how is this post-reopening revenue shortfall adjusted?

A
B
C
D