2.5 Common Property Policy Conditions and Clauses

Key Takeaways

  • After a loss the insured must give prompt notice, protect property, prepare an inventory, and file a sworn proof of loss (typically within 60 days).
  • Subrogation transfers the insured's recovery rights to the insurer; the insured cannot abandon property or waive subrogation after a loss.
  • The appraisal clause resolves disputes over the AMOUNT of loss, never whether coverage applies.
  • The mortgagee clause protects the lender separately and can pay even when the insured's own act voids coverage.
  • Liberalization extends mid-term coverage broadenings automatically; assignment requires insurer consent; vacancy beyond 60 days suspends some perils.
Last updated: June 2026

Conditions: The Rules Both Parties Must Follow

Conditions are the provisions that spell out the duties, rights, and procedures governing the contract. Breaching a condition (e.g., failing to give prompt notice) can void coverage for that loss. Property exams test a cluster of standard conditions found across the ISO Common Policy Conditions and the property coverage forms.

Insured Duties After a Loss

Following a loss, the insured must:

  • Give prompt notice to the insurer.
  • Protect property from further damage (and keep records of expenses — reasonable mitigation costs are reimbursable).
  • Prepare an inventory of damaged property.
  • Submit a signed, sworn proof of loss, usually within 60 days of the insurer's request.
  • Submit to an examination under oath and cooperate with the investigation.

Failure to perform these duties can defeat an otherwise valid claim. The insurer in turn typically must pay or deny within a state-set number of days after reaching agreement.

Subrogation, Salvage, and Abandonment

  • Subrogation: after paying a loss, the insurer assumes the insured's right to recover from a negligent third party. The insured must not waive subrogation rights AFTER a loss; doing so can void coverage. (Waivers BEFORE a loss — e.g., in a lease — are generally allowed.)
  • Salvage: the insurer takes title to damaged property it has paid for as a total loss and sells it to offset the payment.
  • No abandonment: the insured cannot abandon damaged property to the insurer and demand the full limit; the property remains the insured's unless the insurer elects to take it.

Other Insurance, Appraisal, and Mortgagee Clauses

  • Other Insurance (pro rata): when two policies cover the same loss, each pays its proportion: (this policy's limit / total of all limits) × loss. Example: $80,000 and $120,000 limits on a $50,000 loss — the first pays $20,000 (80/200), the second $30,000 (120/200).
  • Appraisal clause: if the insurer and insured agree coverage applies but dispute the AMOUNT, either may demand appraisal. Each picks a competent appraiser; the two select an umpire; agreement by any two is binding. Appraisal resolves value, never coverage.
  • Mortgagee (loss payable) clause: protects the lender; the mortgagee is paid to the extent of its interest, receives separate notice of cancellation (commonly 10 days for nonpayment, longer otherwise), and can recover even if the insured's own act (e.g., arson) voids the insured's coverage.

Cancellation, Nonrenewal, Assignment, and Liberalization

ConditionKey rule
CancellationInsurer notice commonly 10 days for nonpayment, 30 days for other reasons; after 60 days in force, cancellation reasons are limited by statute.
NonrenewalRequires advance written notice (often 30–45 days, state-specific).
AssignmentThe policy cannot be assigned without the insurer's written consent — because underwriting was based on the original insured.
LiberalizationIf the insurer broadens coverage during the term with no premium increase, the broadening applies automatically to existing policyholders.
Concealment/FraudMaterial misrepresentation or fraud voids the policy.
VacancyAfter a building is vacant beyond 60 consecutive days, coverage for certain perils (vandalism, glass breakage, water, theft) is suspended and other losses are reduced by 15%.
Test Your Knowledge

The insurer and insured agree the fire loss is covered but cannot agree on the dollar amount of damage. Which policy condition resolves this dispute?

A
B
C
D
Test Your Knowledge

Two policies cover the same building: Policy A has a $80,000 limit and Policy B has a $120,000 limit. A covered loss is $50,000. Under the pro rata other-insurance condition, how much does Policy A pay?

A
B
C
D

Duties After Loss — the Sequence Insurers Require

Property conditions impose a familiar sequence of insured duties after a loss, and failure to comply can defeat an otherwise-valid claim:

  1. Prompt notice to the insurer (and to police for theft).
  2. Protect the property from further damage and keep records of expenses.
  3. Prepare an inventory of damaged and undamaged property.
  4. Cooperate, submit to examination under oath, and produce records.
  5. File a sworn proof of loss, usually within 60 days of the insurer's request.

Exam alert: The insured must mitigate (protect from further loss); reasonable expenses to do so are usually reimbursed. Refusing examination under oath or failing to file the proof of loss can void the claim even when the loss itself was covered.

Subrogation, Other Insurance, Appraisal, and the Mortgage Clause

Several conditions control how a claim is paid and recovered:

  • Subrogation lets the insurer step into the insured's shoes to recover from the at-fault party; the insured must not impair this right (waiving recovery after a loss can void coverage).
  • Other insurance clauses prevent overpayment: pro rata sharing splits the loss by each policy's share of total coverage; primary/excess and non-contribution wording decide which policy pays first.
  • Appraisal resolves disputes over the amount (not coverage) of a loss: each side names an appraiser, and a neutral umpire breaks a tie.
  • The standard (union) mortgage clause protects the lender's interest even if the insured's own acts (such as arson) void the owner's coverage, and lets the mortgagee receive notice and pay premiums to keep coverage alive.

Worked pro rata example: Two policies of $100,000 and $300,000 cover a $40,000 loss. The $100,000 policy pays $40,000 x (100/400) = $10,000; the $300,000 policy pays the remaining $30,000.

Cancellation, Nonrenewal, and the Liberalization Clause

The conditions also govern how a policy ends. Cancellation terminates coverage mid-term; most forms let the insured cancel anytime and require the insurer to give written notice — commonly 10 days for nonpayment and a longer period (often 30 days) for other reasons, with state law (and Massachusetts statutes) frequently setting stricter minimums. Nonrenewal is a decision not to continue at the end of the term and also requires advance notice. Assignment of the policy to another party generally requires the insurer's written consent, because the insurer underwrote a specific insured.

The liberalization clause automatically extends any broadening of coverage the insurer adopts during the policy term at no additional premium, so insureds benefit from improved forms without re-applying. Knowing which notice period and which condition governs a given termination scenario is a steady source of exam points, especially where a state minimum overrides the form's default.