Property Insurance Fundamentals
This chapter covers the core mechanics shared by almost every property policy you will see on the California exam: how covered perils are listed, which losses standard forms refuse to pay, how property is classified, and how the dollars are calculated when a loss occurs. About one out of every ten exam questions comes from this material, and the same concepts reappear in the homeowners, dwelling, and commercial property chapters. Master the named-versus-open-peril distinction, the basic and broad perils, the standard exclusions, the difference between actual cash value and replacement cost, the coinsurance penalty math, and the conditions that protect mortgagees, control vacancy, and govern subrogation and other insurance, and you will recognize the shape of the right answer even on questions worded in unfamiliar ways.
Named-Peril vs. Open-Peril (Special-Form) Coverage
Every property policy answers one structural question first: how does it decide whether a loss is covered? A named-peril (also called specified-peril) policy lists each peril it will pay for, and the insured must show that the loss was caused by one of those listed perils. An open-peril policy, usually labeled a special form or all-risk, takes the opposite approach: it covers all direct physical loss to covered property except losses caused by perils that are specifically excluded. The exam loves the burden-of-proof consequence. On a named-peril form the insured has the burden of proving the loss came from a covered peril. On an open-peril form, coverage is presumed and the insurer must prove that an exclusion applies. Open-peril coverage is broader and usually more expensive; named-peril coverage is narrower and cheaper. No standard form, named or open, is a true 'all losses' policy: every form has exclusions.
The Basic-Form Perils and the Broad-Form Add-Ons
The basic-form perils are the traditional core of property insurance. A handy memory device groups them as FELLW plus the rest: Fire, Explosion, Lightning, civil disorder (riot or civil commotion), Windstorm or hail; then smoke, aircraft or vehicles, vandalism, and sprinkler leakage. Sinkhole collapse and volcanic action are commonly listed too. The broad form keeps every basic-form peril and adds five more: falling objects; weight of ice, snow, or sleet; accidental discharge or overflow of water or steam from a plumbing, heating, or air-conditioning system; sudden and accidental tearing apart, cracking, burning, or bulging of one of those systems; and freezing. Special-form (open-peril) coverage goes further still and covers all direct physical loss except what is excluded. When an exam question lists perils, run them against this map before answering: if the form is basic, only the FELLW-plus group is covered; if broad, add the five 'extra' perils; if special, ask whether an exclusion applies.
Common Exclusions Across All Property Forms
Even open-peril policies refuse to pay for certain losses. The standard property exclusions you must know are: earth movement (including earthquake, landslide, mine subsidence, and similar earth shifts), flood and surface water, war and military action, nuclear hazard, intentional acts of the insured, wear and tear and inherent vice, mechanical breakdown, gradual deterioration, and ordinance or law (the increased cost of complying with newer building codes). Earthquake coverage in California is normally added by separate policy, often a California Earthquake Authority (CEA) policy. Flood coverage usually comes from the National Flood Insurance Program (NFIP) or an admitted private flood policy. The exam often tests this by giving a loss scenario and asking which exclusion applies; if the loss involves shifting earth, rising water, war, nuclear release, intentional damage, or simple aging, it is almost certainly excluded under a standard form.
Real Property, Personal Property, and What Each Form Covers
Property policies separate the things they insure into real property and personal property. Real property is the land and the structures or fixtures permanently attached to it: the building itself, the foundation, attached porches and garages, built-in cabinets, and items bolted or wired in permanently enough to be part of the structure. Personal property is movable property that is not permanently affixed: furniture, equipment, tools, inventory, clothing, and most contents. A commercial property policy lets the insured choose Building coverage (Coverage A on most ISO forms), Business Personal Property coverage (Coverage B), or both. A homeowners policy bundles dwelling (Coverage A), other structures (B), personal property (C), and loss of use (D). The line between real and personal property matters for who owns what, which coverage responds, and how the loss is valued.
Replacement Cost vs. Actual Cash Value
Two different yardsticks measure how many dollars an insurer pays after a covered loss. Actual cash value (ACV) is the standard measure under California Insurance Code section 2051: the cost to repair or replace the property, less a fair and reasonable deduction for physical depreciation. A 12-year-old roof, for example, is paid based on what is left of its useful life, not on the price of a brand-new roof. Replacement cost (RC) coverage is broader: it pays the cost to repair or replace with materials of like kind and quality, without subtracting depreciation, up to the policy limit. RC coverage normally has two conditions: the insured must actually repair or replace the damaged property, and the insurer typically pays ACV first and the depreciation holdback after replacement is complete. Loss-settlement clauses in HO and CP forms put these rules into the contract. The choice between ACV and RC drives both the premium and the size of the eventual claim check.
The Coinsurance Clause and Its Penalty
A coinsurance clause asks the insured to share the risk by carrying a limit close to the true value of the property, most often 80%, 90%, or 100% of replacement cost. If the insured carries that required limit, partial losses are paid in full up to the limit. If the insured carries less, a coinsurance penalty applies at the time of loss using the formula (Did/Should) x Loss - Deductible. Example: a building with $500,000 replacement cost requires 80% coverage, so 'Should' = $400,000. The insured carries only $300,000, so 'Did' = $300,000. A $100,000 covered loss with a $1,000 deductible pays (300,000 / 400,000) x 100,000 - 1,000 = $74,000, not the full $100,000. The penalty is in addition to the deductible, and it does not apply to total losses up to the policy limit. The lesson for the exam: under-insuring below the coinsurance requirement always reduces partial-loss recovery, no matter how much room the policy limit has left.
Mortgagee Protection: Standard vs. Open Mortgage Clauses
Most property policies on financed buildings name the lender on the policy. A standard (also called union) mortgage clause creates an independent contract between the insurer and the mortgagee: the lender's right to recover is not voided by the borrower's act or neglect (such as misrepresentation, vacancy, or even arson by the borrower) as long as the lender pays any premium that becomes due and notifies the insurer of any change in occupancy or hazard that the lender knows about. An open or simple mortgage clause is much weaker: the lender is just a loss payee, and the lender's right to recover rises and falls with the borrower's. If the borrower's act voids coverage, the open-clause lender loses too. The exam usually tests this by giving facts where the borrower's conduct defeats the borrower's claim and asking whether the lender still recovers. Under a standard clause, yes; under an open clause, no.
Liberalization, Vacancy, and Pair-and-Set Clauses
Three short policy provisions appear often on the exam. The liberalization clause says that if the insurer broadens its form during the policy period (or within a stated window before the effective date) without charging extra premium, the broader coverage automatically applies to existing policies. It only flows one way: it never narrows coverage. The vacancy clause restricts coverage when a building is left empty. Under a typical commercial property vacancy provision, once a building has been vacant more than 60 consecutive days, the insurer will not pay losses caused by vandalism, glass breakage, water damage, theft, or attempted theft, and the insurer reduces the payment for other covered losses by a stated percentage (often 15%). The pair-and-set clause limits the recovery when only part of a matched pair or set is damaged. The insurer pays the difference between the value of the pair before the loss and the value of the remaining piece after the loss, or may restore the pair, but the insurer does not have to pay as if the whole pair were destroyed.
Salvage Rights and Subrogation
Two doctrines move value back to the insurer after it pays a claim. Salvage rights let the insurer take possession of the damaged property once it has paid the insured the agreed loss value, so the insurer can recover whatever remains by repairing and selling the item. Subrogation is the insurer's right to step into the insured's legal shoes and pursue any third party whose fault caused the loss, up to the amount the insurer paid the insured. Subrogation prevents the insured from collecting twice for the same loss, both from the insurer and from the wrongdoer, and it supports the indemnity principle in California Insurance Code section 22, which defines insurance as protection against contingent or unknown loss. The insured must not impair the insurer's subrogation right; for example, the insured cannot release the wrongdoer from liability after a loss without the insurer's consent. Many policies require the insured to cooperate in the subrogation suit.
Other Insurance: Pro Rata and Contribution by Equal Shares
When two or more policies cover the same interest in the same property against the same peril, an 'other insurance' clause decides how they share the loss. Under a pro-rata clause, each policy pays in the proportion that its limit bears to the total of all applicable limits. Example: Policy A limit $200,000, Policy B limit $300,000, covered loss $50,000. Total limits = $500,000. Policy A pays 200/500 x 50,000 = $20,000. Policy B pays 300/500 x 50,000 = $30,000. Pro rata is the common method on standard property policies. Contribution by equal shares, more common in liability insurance, has each policy pay the same dollar amount until the lower-limit policy is exhausted; the higher-limit policy then continues alone up to its remaining limit. Whichever method applies, the result is that the insured receives indemnity once, not multiple full recoveries.
Last updated: May 2026