The two designs, in one table
| Open perils | Named perils | |
|---|---|---|
| What's covered | Everything except the listed exclusions | Only the listed causes of loss |
| Burden of proof | Carrier must point to an exclusion | You must fit the claim onto the list |
| On an HO-3 | Dwelling & other structures (A, B) | Personal property (C) |
| On an HO-5 | Dwelling AND contents | — |
| Weird accidents | Usually covered | Usually not |
The named-perils list on an HO-3's contents coverage runs roughly sixteen items — fire and lightning, windstorm and hail, explosion, riot, aircraft, vehicles, smoke, vandalism, theft, falling objects, weight of ice and snow, accidental water discharge, and a few more. Most real-world losses are on the list. The interesting cases are the ones that aren't.
Three claims that land in the gap
The paint can. You're rolling the ceiling; a full gallon tips off the ladder onto the sofa and rug. Damage to the house (floor, walls) is open-perils — covered unless excluded, and "clumsiness" isn't an exclusion. The sofa and rug are contents — and "paint spill" is not a named peril. On an HO-3, the building side of that claim pays and the contents side doesn't. On an HO-5, both sides pay.
The disappearing ring. A ring lost down the drain isn't theft — it's "mysterious disappearance," which isn't on the list. This one has a purpose-built fix regardless of form: scheduling the item, which covers loss types the base policy never will, typically with no deductible.
The tipped bookcase. A bookcase falls and crushes what's on the shelves. "Falling objects" as a named peril generally contemplates objects from outside the home. The contents claim gets awkward on an HO-3; on open-perils contents it's a covered accident unless excluded.
The honest summary
Named perils covers the disasters everyone imagines. Open perils also covers the accidents nobody imagines — and after enough years in a house, the unimaginable accident is the one you'll have. That's the actual product difference you're paying 10–20% more for on an HO-5.
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Get a pricing indication →"Open perils" still has a fence around it
Open-perils is not "everything, period." The standard exclusions apply to both designs: earthquake and flood (separate policies — here and here), wear and tear and neglect, settling, intentional acts, and business activity. What open-perils buys you is the presumption of coverage for everything else — the carrier does the proving, not you. On named perils, an adjuster's first question is "which peril is this?"; on open perils, it's "which exclusion could this be?" Those are very different conversations to be on the right side of.
What to do with this knowledge
First, know which side of the split each part of your policy sits on — your dec page won't say "open perils"; it says "special form." Second, patch the known gaps: schedule the jewelry, add the contents replacement-cost endorsement, add water backup. Third, if your contents are worth real money, get the HO-5 priced — our sister site BestHO5.com specializes in comprehensive-form placements and we quote both forms from one application.
Frequently asked
Is theft covered either way?
Yes — theft is a named peril, so it's covered under both designs. What differs is the sub-limits: jewelry, cash, and certain categories carry small caps under Coverage C regardless of form. Contents coverage →
Does open perils mean no exclusions?
No. Earthquake, flood, wear and tear, and the other standard exclusions apply to every homeowners form. Open perils means everything not excluded is covered — the list you have to worry about is short and printed.
Is the dwelling ever named-perils?
On older/basic forms (HO-1, HO-2, and some DP-1/DP-2 dwelling policies) yes. The HO-3 and DP-3 both give the dwelling open-perils treatment — that's what "special form" means.