The liability point is the one to settle first. North Carolina's insurance regulator states it directly in its consumer guidance on dwelling policies: "Dwelling policies typically do not provide liability coverage, like some homeowners policy forms, but they can provide other similar coverages to standard homeowners policies." For an owner-occupant that would be an odd omission. For a landlord it is the coverage most exposed to a large loss, because the people getting hurt on the property are tenants, their guests and their visitors, and the owner is the party they sue. Liability is normally available as an addition to the dwelling policy, and an owner who has not added it has no defense cost coverage and no damages coverage for that class of claim. It also has a knock-on effect that is easy to miss: an umbrella policy sits on top of underlying liability limits, so a landlord with no liability coverage on the rental has nothing there for an umbrella to sit above.
The three dwelling forms are genuinely different products, and the regulator describes them in a way worth borrowing. The North Carolina department characterizes DP-1, the basic form, as a named-perils policy covering losses such as fire, lightning and internal explosion, with further perils including windstorm or hail, explosion, riot or civil commotion, aircraft, vehicles, smoke and volcanic eruption available when an extended coverage premium is shown on the declarations. It notes that DP-1 claims are settled on an actual cash value basis unless the owner pays for replacement cost. DP-2, the broad form, is also named-perils but covers a materially longer list, and typically settles on a replacement cost basis. DP-3, the special form, is the most comprehensive: the real property is covered on an open-perils basis, meaning all types of damage except what the policy excludes, while personal property remains covered on a named-perils basis. Read those as the regulator's description of how the forms are generally written, not as a universal. Carriers file their own forms, and what any particular policy covers varies by state and by insurer.
Loss of rental income is a distinct coverage and it is worth checking the amount. The dwelling forms can include fair rental value or loss of rent coverage, which pays the rent the property would have produced while it is unlivable after a covered loss. The exposure it answers is a real one: a fire that takes six months to repair takes six months of rent with it while the mortgage, the taxes and the insurance keep running. When those proceeds arrive they are not a windfall for tax purposes. They stand in place of rent, and rental income is what they are.
The other side of the policy is the property it does not cover. A landlord's policy covers the building and the owner's own property at the location, such as appliances, furnishings in a furnished unit, and equipment kept for maintenance. It does not cover the tenant's belongings, which is exactly why renters insurance exists and why many leases now require a tenant to carry it. The major perils excluded from a homeowners policy are generally excluded here too, so flood and earthquake remain separate purchases in their own markets.
Occupancy is the fact the insurer is pricing, so it is the fact to disclose. A homeowners policy is not designed for rental use rather than instantly void: regulators note that such policies are not built to cover accidents arising out of short-term rentals and commonly limit coverage for a business run from the home, and occasional renting can often be handled by an endorsement onto the existing policy. Renting a property out properly generally calls for the dwelling form instead. What actually puts a claim at risk is renting a home out on a policy written for owner-occupancy without telling the insurer.