In insurance, AOP means “All Other Perils.” It’s the part of a homeowners or commercial property policy that covers any cause of loss the policy doesn’t specifically name elsewhere and doesn’t exclude. You’ll usually see it on the declarations page next to a deductible amount, sitting alongside separate deductibles for things like wind, hail, or hurricanes. In plain terms, AOP is the default bucket: if a loss isn’t handled by a named-peril deductible and isn’t on the exclusions list, it falls under AOP.
Where AOP Shows Up on Your Policy
Most homeowners carry an HO-3 policy, which the industry calls a “special form.” An HO-3 covers your dwelling and attached structures against every cause of physical loss the policy doesn’t specifically exclude. Personal belongings on an HO-3 are covered only against a shorter list of named perils like fire, theft, and vandalism. AOP is the label insurers use for that open-perils coverage when they need to separate it from perils that get their own deductible. An HO-5, or “comprehensive form,” extends open-perils coverage to both the dwelling and personal property, so AOP applies more broadly under that policy type.1National Association of Insurance Commissioners. Industry Data Call Property HO Definitions
Two HO-3 policies from different carriers won’t necessarily cover identical risks. Insurers build policies on standardized forms from the Insurance Services Office (part of Verisk), then modify them with endorsements.2Verisk. ISO Forms, Rules, and Loss Costs Read the actual policy language rather than trusting that “standard” means the same thing everywhere.
How the AOP Deductible Works
Your declarations page probably lists more than one deductible. The AOP deductible applies to any loss that doesn’t trigger a separate named-peril deductible. Most homeowners insurers set minimum AOP deductibles at $500 or $1,000, with higher options that reduce your premium.3Insurance Information Institute. Understanding Your Insurance Deductibles Pick a $2,500 AOP deductible and you’ll pay less each year, but you’ll absorb that full amount before coverage kicks in on a kitchen fire or a burst pipe.
Wind and hail damage often carries its own deductible, and this is where costs jump. Wind/hail deductibles are frequently calculated as a percentage of your dwelling coverage rather than a flat dollar amount. On a home insured for $300,000 with a 1% wind/hail deductible, you’d owe $3,000 out of pocket before the insurer pays anything on a hail claim. At 2%, that becomes $6,000. Hurricane deductibles work similarly and can run higher in coastal areas. Your AOP deductible doesn’t apply to those losses at all; the named-peril deductible replaces it.
This split catches people off guard. A homeowner who chose a $1,000 AOP deductible expecting it to cover everything finds out after a windstorm that the wind/hail deductible is $6,000. Check the declarations page for each deductible listed and confirm which perils each one attaches to before a loss happens.
What AOP Doesn’t Cover
Open-perils coverage is broad, but the ISO HO-3 form carves out specific causes of loss that won’t be paid no matter how sudden or accidental the damage is.
Floods and Earthquakes
Standard homeowners policies do not cover flood damage. Flood insurance must be purchased separately, either through the National Flood Insurance Program managed by FEMA or from a private insurer.4FEMA. Flood Insurance Earthquake coverage is likewise excluded and requires a standalone policy or endorsement. Both need to be lined up before disaster season, not during it.
Wear, Tear, and Maintenance Problems
Insurance covers sudden, accidental losses, not slow, predictable ones. The ISO HO-3 form specifically excludes wear and tear, deterioration, rust, corrosion, dry rot, and mechanical breakdown. Mold is also excluded in most cases, though coverage may apply if the mold resulted from a sudden covered event like an accidental pipe burst or appliance overflow.5Insurance Information Institute. Homeowners 3 Special Form
The line between “sudden” and “gradual” is where most claim disputes happen. A pipe that bursts overnight is covered. A pipe seeping behind the wall for months gives the insurer room to argue neglect. Keep records on the condition of plumbing, roofing, and HVAC so you have evidence the loss was genuinely sudden.
Sewer and Water Backup
Sewer and drain backups are excluded from standard HO-3 policies. A backed-up sewer line can send contaminated water into your basement and cause thousands of dollars in damage, and AOP won’t touch it. Most insurers sell a sewer backup endorsement for a modest additional premium, and it’s one of the cheaper add-ons worth carrying.
Intentional Acts, War, and Government Action
Damage you cause on purpose, losses from war or nuclear events, and property seized or destroyed by government action are universally excluded. No endorsement is available for these.
Gaps That Shrink a Payout Even Under AOP
Anti-Concurrent Causation
Most property policies include an anti-concurrent causation clause. When damage results from both a covered peril and an excluded peril acting together, this clause lets the insurer deny the entire claim, even if the covered peril was the primary cause. A common example: wind rips open your roof (covered) and floodwater enters through the opening (excluded). Under the clause, the insurer can refuse to pay for any of the damage because an excluded peril contributed. This matters most in areas prone to hurricanes and severe storms.
Building Code Upgrades
AOP coverage pays to restore your home to its pre-loss condition, not to bring it up to current building codes. If your city updated electrical or structural codes since your home was built, the extra cost of meeting those codes during a rebuild is excluded unless you’ve bought an ordinance or law endorsement. In older homes, this gap can add tens of thousands of dollars to a repair bill.
Sublimits on Personal Property
Even when personal property is covered, your policy likely caps certain categories. Jewelry, fine art, firearms, electronics, cash, and musical instruments commonly carry per-item or per-category limits far below your total personal property amount. A $1,500 jewelry sublimit means that’s all you’ll collect on a stolen $8,000 engagement ring, regardless of your overall coverage. A scheduled personal property endorsement (sometimes called a “rider” or “floater”) removes the sublimit for individually listed items.
Actual Cash Value vs. Replacement Cost
How much you receive on an AOP claim also depends on how your policy values the loss. Actual cash value pays what the damaged property was worth at the time of loss, with age and depreciation subtracted. A ten-year-old roof that costs $15,000 to replace might yield only $7,000 under ACV because the insurer subtracts a decade of wear.6National Association of Insurance Commissioners. What’s the Difference Between Actual Cash Value Coverage and Replacement Cost Coverage?
Replacement cost pays what it actually costs to repair or replace the property with materials of similar kind and quality, without deducting depreciation.6National Association of Insurance Commissioners. What’s the Difference Between Actual Cash Value Coverage and Replacement Cost Coverage? Replacement cost policies typically pay in two stages: an ACV payment first, then the depreciation holdback after you complete repairs and submit receipts. Pocket the first check without repairing, and you keep only the depreciated amount.
If You Need to File an AOP Claim
Take reasonable steps to prevent further damage as soon as the loss happens. Board up broken windows, shut off water to a burst pipe, start drying out affected areas. Failing to act gives the insurer grounds to reduce your payout for damage that worsened through inaction. Keep receipts, because the cost of temporary measures is generally reimbursable. Don’t make permanent repairs before the adjuster inspects.
Photograph and video everything before cleanup. Gather repair estimates and any professional assessments. Many policies require a sworn proof-of-loss statement within 60 days of the loss, and missing that deadline can forfeit the claim entirely. Report promptly: policies commonly require “prompt notice” or specify windows of 30 to 90 days, though some allow up to a year. The specific deadline sits in the “Duties After Loss” section of your policy.
One boundary worth knowing: a standard homeowners policy, AOP included, doesn’t cover business activity run from your home or damage caused by tenants if you rent the property out. Those situations need a separate endorsement, commercial coverage, or landlord insurance.