3.1 Dwelling Policy Forms DP-1, DP-2, DP-3

The ISO Dwelling Program: DP-1, DP-2, and DP-3

The ISO Dwelling Property program insures one-to-four-family residential risks that do not qualify for (or do not need) a full Homeowners policy: rental dwellings, seasonal homes, homes of below-average value, and owner-occupied dwellings where the insured wants only structure-and-contents coverage without bundled liability. Unlike the Homeowners program, the Dwelling program is modular — liability, theft, and personal property are not automatic and must be added by endorsement.

There are three ISO dwelling forms, distinguished by two variables: the breadth of perils insured against, and the valuation basis used to settle building losses. Mastering which form pairs which perils with which valuation answers the majority of dwelling exam questions.

The Three Forms at a Glance

The progression is cumulative: DP-2 contains everything DP-1's Extended Coverage offers plus more named perils, and DP-3 contains everything DP-2 covers but converts the structure to open-peril (all-risk) coverage.

Open Peril vs. Named Peril and the Burden of Proof

The single most tested distinction is how coverage is triggered and who must prove what:

• On a named-peril form (DP-1, DP-2), the loss is covered only if it was caused by a peril listed in the policy. The insured carries the burden of proving the loss arose from a covered peril.
• On an open-peril form (DP-3 structure), every direct physical loss is covered unless it is specifically excluded. The insurer carries the burden of proving an exclusion applies.

A critical trap: even on DP-3, Coverage C (personal property) remains broad named-peril — open-peril coverage applies only to Coverage A and Coverage B. So a mysterious-disappearance or unexplained-damage loss to the building is paid on DP-3, but the same kind of loss to contents is not, because contents need a named peril.

Valuation and Common Exam Hooks

DP-1 settles building losses at actual cash value — replacement cost minus depreciation — so its premium is lowest but the insured absorbs depreciation at claim time. DP-2 and DP-3 settle Coverage A and B at replacement cost, provided the insured carries at least 80% of replacement cost; falling below 80% triggers the dwelling coinsurance penalty (the larger of ACV or the Did/Should formula result).

Exam writers frequently test these facts:

• DP-1's Extended Coverage (EC) and Vandalism & Malicious Mischief (V&MM) are optional add-ons, not automatic.
• The Dwelling forms have no liability and no theft coverage built in — both are endorsements.
• DP-3 is not an HO-3; it lacks the bundled personal liability and broad personal-property coverage of a homeowners form.
• Glass breakage, collapse, and tenant property are handled through Other Coverages and endorsements, not the base perils list.

Eligibility and Why Dwellings Use the DP Program

A risk lands in the Dwelling program rather than Homeowners for several reasons the exam expects you to recognize. Tenant-occupied (rental) dwellings cannot use an owner-occupied HO form, so a landlord insures the structure on a DP and adds liability separately. Seasonal or secondary homes, vacant or under-renovation dwellings, and dwellings below the insurer's minimum value for a Homeowners policy are also typical DP risks. The program covers one-to-four-family dwellings and associated structures.

Because the DP forms strip out the bundled coverages of a Homeowners policy, the producer must affirmatively add what the client needs. A landlord typically adds the Dwelling Personal Liability Supplement (or a separate liability policy), theft coverage by endorsement, and Fair Rental Value to protect rental income. An owner-occupant on a DP adds Additional Living Expense and may schedule valuable contents.

Mapping Perils Across the Forms

A quick mental model: think of three stacked tiers of perils. Basic (DP-1) starts with fire, lightning, and internal explosion; the Extended Coverage (EC) option adds windstorm/hail, vehicles, smoke, aircraft, riot or civil commotion, explosion, and volcanic eruption, and V&MM is a further add-on. Broad (DP-2) includes everything in DP-1 plus EC automatically, then adds perils such as falling objects, weight of ice/snow/sleet, accidental discharge of water or steam, freezing of plumbing, and sudden tearing/cracking of a heating system.

Special (DP-3) keeps DP-2's broad named perils on contents but upgrades the structure to open-peril coverage. Knowing which tier first introduces a given peril — for instance, that wind/hail enters at DP-1's EC option, not at DP-2 — is a common multiple-choice discriminator.

Quick Comparison and Exam Decision Rule

When a question describes a residential risk and asks which dwelling form fits, work two questions in order. First, what perils does the insured need? If only fire and basic causes matter and price is paramount, DP-1 with optional Extended Coverage suffices; if broad named-peril protection is wanted, DP-2; if open-peril protection on the structure is wanted, DP-3. Second, what valuation does the insured want on buildings? DP-1 forces actual cash value; DP-2 and DP-3 provide replacement cost subject to the 80% requirement. Pair those two answers and the correct form follows directly.

Remember that none of the forms bundles liability, theft, or robust personal-property coverage the way a Homeowners form does — those are deliberate add-ons that let the producer tailor a rental or seasonal program precisely to the exposure and budget.