Commercial Property Insurance
Commercial property insurance protects buildings, business contents, income streams, and movable property used by businesses of every size. Unlike a homeowners policy, which is sold as one packaged contract, commercial property coverage is modular: the producer assembles the policy from separate forms (declarations, conditions, a coverage form, and a causes-of-loss form) and then adds endorsements and optional coverages tailored to the insured. This chapter walks through how that modular structure fits together, the three causes-of-loss forms, the workhorse Building and Personal Property Coverage Form (BPP / CP 00 10), business income and extra expense coverages, the all-in-one Businessowners Policy (BOP), specialty lines (builders risk, equipment breakdown, commercial crime, inland marine, ocean marine), and the policy mechanics every broker-agent must master: coinsurance, agreed value, and the vacancy condition. Mastering these ten sections covers approximately 10% of the California Property & Casualty exam.
The Commercial Property Coverage Part: Modular Structure
Unlike a homeowners policy that arrives as a single contract, commercial property insurance is built from a stack of standardized components. The Commercial Property Coverage Part is what results when the producer combines: (1) Common Policy Declarations, which name the insured, list policy period, and show total premium; (2) Common Policy Conditions, which apply to every coverage part in the package (cancellation, changes, examination of books, inspections, premiums, and transfer of rights); (3) the Commercial Property Declarations page, which lists the insured location(s), the coverage form(s) selected, limits, deductibles, coinsurance percentages, and any optional coverages; (4) one or more Coverage Forms (most commonly the Building and Personal Property Coverage Form, CP 00 10, but also Builders Risk CP 00 20, Condominium Association CP 00 17, Business Income CP 00 30, Extra Expense CP 00 50, and others); and (5) a Causes of Loss Form (Basic, Broad, or Special) that tells the reader WHICH perils are covered. Missing any of these five elements breaks the coverage part — a coverage form by itself is not a policy. Most insurers issue these as one bound document, but on the exam you must remember that the coverage form and the causes-of-loss form are separate components.
The Three Causes of Loss Forms: Basic, Broad, Special
After selecting a coverage form, the insured must select WHICH perils that form will respond to by attaching one of three causes-of-loss forms. The Basic Form (CP 10 10) is a named-perils form covering eleven perils: fire, lightning, explosion, windstorm or hail, smoke, aircraft or vehicles, riot or civil commotion, vandalism, sprinkler leakage, sinkhole collapse, and volcanic action. The Broad Form (CP 10 20) adds three more named perils and a limited collapse coverage: weight of snow/ice/sleet, falling objects, and accidental discharge or leakage of water or steam from plumbing, heating, air-conditioning, or other systems. The Special Form (CP 10 30) is the broadest and the most commonly sold; it is sometimes called 'all-risk' but is more accurately described as 'open perils.' It covers any direct physical loss not specifically excluded — wear and tear, faulty workmanship, settling, mechanical breakdown, war, nuclear hazard, government action, and several others are excluded. The Special Form also provides theft coverage that the Basic and Broad forms do not (subject to special limits on certain property such as fur, jewelry, and tickets). When in doubt, recommend Special: the burden of proving an exclusion shifts to the insurer.
Building and Personal Property Coverage Form (BPP, CP 00 10)
The Building and Personal Property Coverage Form is the workhorse of commercial property insurance and is the form most exam questions assume. It offers three separate items of coverage, each with its own limit shown on the declarations page. Building coverage applies to the building or structure described, completed additions, permanently installed fixtures, machinery and equipment, outdoor fixtures, personal property owned by the insured and used to maintain or service the building (such as appliances for cooking, dishwashing, laundering, fire-extinguishing equipment, floor coverings, and refrigerating and ventilating equipment), and additions under construction, alterations, and repairs on or within 100 feet of the described premises. Your Business Personal Property (BPP) covers furniture and fixtures, machinery and equipment, stock, all other personal property owned by the named insured and used in the business, the insured's labor/materials/services on personal property of others, and the insured's use interest as tenant in improvements and betterments. Personal Property of Others covers property owned by others that is in the insured's care, custody, or control (such as customer goods at a repair shop), with loss payable to the owner unless the policy says otherwise. The named insured selects which of the three items to insure by showing a limit for each on the declarations.
Business Income (Interruption) and Extra Expense Coverages
Physical damage rarely stops with bricks and mortar — when a covered loss shuts the doors, the bigger blow is often the income the business cannot earn. The Business Income (and Extra Expense) Coverage Form (CP 00 30) and the Business Income Coverage Form (CP 00 32) respond to that exposure. Business Income coverage pays the net income (net profit or loss before income taxes) the insured would have earned, plus continuing normal operating expenses (such as payroll, rent, debt service, and utilities), during the 'period of restoration' following a direct physical loss caused by a covered cause of loss to property at the described premises. The period of restoration begins on the date of loss (after any waiting period, typically 72 hours in newer editions) and ends on the earlier of (a) the date the property should be repaired, rebuilt, or replaced with reasonable speed and similar quality, or (b) the date the business is resumed at a new permanent location. Extra Expense pays the necessary expenses the insured incurs during that period that it would not have incurred but for the loss — such as renting temporary space, paying premium overtime rates, or leasing substitute equipment to speed the resumption of operations. The two coverages can be written together or as standalone forms.
Extensions: Civil Authority, Extended Business Income, and Newly Acquired
The Business Income forms include several built-in extensions that are heavily tested. The Civil Authority extension pays lost income (and necessary extra expense) when access to the described premises is specifically prohibited by an order of civil authority because of direct physical loss to OTHER property within a stated distance of the premises (commonly one mile under older editions; the 2007 and later ISO editions added a 72-hour waiting period and limited the coverage to a stated number of consecutive weeks — typically four). It is the answer when nearby damage forces the police or fire department to barricade the area even though the insured's own building is undamaged. The Extended Business Income extension keeps paying lost income for a limited number of additional days (commonly up to 60 days) after operations resume, so the business is protected during the slow ramp-up to pre-loss revenue. Newly Acquired Property and Newly Constructed Property automatically extend coverage to property at a new location (typically for 30 days) up to a stated limit. Pollutant Cleanup and Removal pays a limited amount (commonly $10,000) to extract pollutants from land or water at the premises following a covered loss. Each extension has its own dollar cap and its own conditions — read them carefully.
Coinsurance, Agreed Value, and the Vacancy Condition
Three policy mechanics in the commercial property form generate disproportionately many exam questions: coinsurance, agreed value, and the vacancy condition. Coinsurance requires the insured to carry insurance equal to at least a stated percentage (commonly 80%, 90%, or 100%) of the property's value at the time of loss. If the insured carries less, the insurer pays only the proportion the carried limit bears to the required limit, multiplied by the loss (the 'did/should x loss' formula). The Agreed Value optional coverage suspends the coinsurance clause for the policy term: the insured submits a signed statement of values, the insurer agrees to an amount, and so long as the policy limit equals or exceeds that agreed value, no coinsurance penalty applies. The Vacancy Condition is enforced when a building has been vacant for more than 60 consecutive days before a loss: the insurer will NOT pay for vandalism, sprinkler leakage (unless protected against freezing), building glass breakage, water damage, theft, or attempted theft, and for any other otherwise covered loss the payment is reduced by 15%. 'Vacant' means containing less than 31% of the total square footage rented to a lessee or used by the building owner for customary operations; buildings under construction or renovation are not considered vacant.
Businessowners Policy (BOP) — Packaged Coverage for Small Business
Most small-to-mid-sized businesses do not need the full a-la-carte flexibility of the commercial property program. For them, ISO and individual insurers publish the Businessowners Policy (BOP), a packaged policy that bundles property, business income, and general liability into a single simplified contract. A standard BOP automatically includes building or business personal property coverage on a special-form, replacement-cost basis (the insured chooses which); business income and extra expense coverage with no separate dollar limit (paid on an actual-loss-sustained basis for up to 12 months for most edition years); commercial general liability with bodily injury, property damage, and personal/advertising injury coverage; and money & securities coverage and a long list of automatic extensions (forgery, employee dishonesty in some editions, water back-up, accounts receivable, valuable papers, and more). Eligibility is restricted: BOP forms typically accept offices, apartment buildings, eligible retail and wholesale risks, restaurants below a stated size, contractors with limited payroll, and similar small risks; they exclude large manufacturers, auto dealers and repair shops, banks, large hotels, and other risks better handled on monoline commercial forms. The BOP is heavily favored on the exam because it is the most common 'small business' product in California.
Specialty Lines I — Builders Risk, Equipment Breakdown, Crime
Several exposures fall outside the standard BPP and require specialty forms. Builders Risk (CP 00 20) insures buildings or structures while under construction, including foundations, materials, supplies, equipment, machinery, and fixtures intended to become a permanent part of the project, whether at the construction site, in transit, or temporarily at another location. Equipment Breakdown (formerly Boiler and Machinery) covers loss caused by mechanical or electrical breakdown, electrical arcing, centrifugal force, and steam-vessel rupture — perils that the standard property forms exclude. It typically pays not only for damage to the equipment itself but for the property damage and business income loss flowing from the breakdown. Commercial Crime is sold either as a separate Crime Coverage Form or as a BOP/CPP endorsement and includes a menu of insuring agreements: Employee Theft (1), Forgery or Alteration (2), Inside the Premises — Theft of Money and Securities (3), Inside the Premises — Robbery or Safe Burglary of Other Property (4), Outside the Premises (5), Computer Fraud (6), Funds Transfer Fraud (7), Money Orders and Counterfeit Money (8), and several others depending on edition. Brokers should ask whether the insured has cashiers handling money on premises, employees with check-writing authority, and computer-based payment processes — each maps to a specific insuring agreement.
Specialty Lines II — Inland Marine and Ocean Marine
Marine insurance is the oldest line of insurance and today splits into two branches. Ocean marine insurance covers ocean-borne exposures and is traditionally written in four coverages: Hull (the vessel itself), Cargo (goods being transported by water), Freight (the income earned by the shipowner for carrying the cargo), and Protection & Indemnity (the shipowner's liability for bodily injury, property damage, and certain crew claims). Inland marine insurance developed in the United States as an extension of ocean marine to cover goods in transit over land and a wide range of movable or unusual property that the standard property forms do not handle well. The Nationwide Marine Definition (originally adopted by the NAIC) tells us what is eligible for inland marine treatment: imports, exports, domestic shipments, instrumentalities of transportation and communication (bridges, tunnels, pipelines, radio towers), personal property floaters (jewelry, fine arts, cameras), and commercial property floaters (contractors equipment, installation, dealers, processors, jewelers block, signs, accounts receivable, valuable papers). Inland marine is favored when the property MOVES (contractors equipment moving between job sites, fine art on tour), is in TRANSIT (a motor truck cargo policy), or is UNUSUAL (a $5 million sculpture). A jeweler taking inventory to trade shows is the textbook inland marine fact pattern.
Putting It Together: Building a Commercial Property Program
A broker-agent's job on a commercial account is to map every exposure to the right form and to spot the gaps that will hurt the client when a claim arises. Start with the building and contents on a BPP (CP 00 10) with the Special causes-of-loss form, replacement-cost valuation, and either an Agreed Value option or a coinsurance percentage the insured can comfortably meet. Add Business Income and Extra Expense (CP 00 30) at a limit based on a 12-month business income worksheet so payroll and net profit will be replaced during a long shutdown. Layer in Equipment Breakdown if the insured operates pressure vessels, refrigeration, or expensive electrical equipment. Add Commercial Crime if the insured has employees handling cash, checks, or wire transfers. Use Inland Marine for any property that moves (contractors equipment, jewelers block, fine art floater, contractors installation floater). For small-to-mid risks that fit the eligibility rules, consider a Businessowners Policy (BOP) instead of building a monoline package — the BOP delivers property, business income, and liability in one premium and is often cheaper. For new construction, use a Builders Risk form (CP 00 20). For property moving over the ocean, use ocean marine; for inland transit, inland marine. Finally, walk the insured through the vacancy condition, coinsurance, and any sub-limits BEFORE binding so they understand the deal they are getting.
Last updated: May 2026