Most owners can name their carrier and their premium. Fewer can name their policy form. The form is the part that decides claims.
A policy form is a standardized contract. It carries a number, printed on your declarations page in a list of small type near the bottom. HO 00 03. DP 00 03. CP 00 10. BP 00 03. That number tells you what kind of property the contract was drafted for, and who the insurer expected to be inside it.
A short-term rental can end up on any of five. Here is what each one assumes, and where the assumption breaks.
1. The HO-3 homeowners policy
This is the form most people carry on the house they live in. It covers the dwelling on an open-perils basis, so anything not excluded is covered. Personal property runs on named perils, so the loss has to match a listed cause.
The assumption is written into the language. The policy insures the residence premises, and residence premises is defined as the place where you live. Every other part of the contract is built on top of that definition.
The liability section carries a business exclusion. Renting a property to paying guests is business activity. Carriers vary in how they treat occasional rental, and ISO published home-sharing endorsements in 2017 that some carriers adopted. Those endorsements contemplate a spare room or an occasional weekend. They are not written for a property that hosts fifty stays a year.
An HO-3 works when you live in the house and rent it rarely, and only when the carrier knows and has agreed to it in writing.
2. The HO-5 homeowners policy
The HO-5 is the wider version of the same idea. Open perils on the dwelling and open perils on personal property. It responds to more kinds of loss and it costs more.
The residency assumption does not change. An HO-5 is still a policy for a home you live in.
Owners sometimes move from an HO-3 to an HO-5 believing they have strengthened their rental protection. They have strengthened their protection as a homeowner. The rental exposure sits exactly where it sat before. This one is worth naming because it feels like a solution. Broader form, higher premium, better coverage. All three are true, and none of them answer the occupancy question.
3. The dwelling policy, DP-1 through DP-3
Dwelling forms are built for rental property. This is what most agents mean when they say landlord insurance.
There are three of them. DP-1 is basic form, a short list of named perils, frequently written on actual cash value. DP-2 is broad form, a longer list of named perils. DP-3 is special form, open perils on the structure, and it is the one you want if you are on a dwelling policy at all.
Personal property coverage on a dwelling form is limited to property the owner keeps on site for maintenance and service of the premises. The limit is small and it was never designed to cover a fully furnished house.
Liability is not automatic. On many dwelling policies it arrives by endorsement, or through a separate liability policy alongside it.
Income coverage appears as fair rental value, usually a percentage of the dwelling limit. It is calculated against what the property would rent for on a lease. A cabin that produces $4,200 in a good August gets measured as though it rents for $1,400 a month.
The assumption is a tenant, a lease, and stable occupancy. Guest turnover is the part that does not fit. Most carriers now ask about short-term rental use directly, on the application and again at renewal.
This is the most common near miss we see in an audit. The owner bought a policy specifically because the property is a rental, and reached a reasonable conclusion that the rental use is covered.
4. Commercial property and the businessowners policy
Commercial forms assume a business operating at a location. Property is usually written on CP 00 10 and liability on CG 00 01, or the two are packaged together in a businessowners policy on BP 00 03.
Several things change at once. Contents become business personal property, which is the correct category for furniture bought to serve guests. Lost revenue becomes business income and extra expense, measured against what the operation actually earns. Liability contemplates members of the public coming onto the premises, because that is what commercial general liability exists to cover.
Other things change with it. Commercial property forms often carry a coinsurance clause, so the limit you select has to reflect the real cost to rebuild or the claim payment gets reduced by formula. Your own belongings in the house can fall outside the definition of covered property.
The practical obstacle here is eligibility rather than design. Plenty of commercial carriers do not want a single residential dwelling with nightly stays, and the classification available for lodging risk varies from carrier to carrier.
5. The dedicated short-term rental program
The fifth option is a policy built for this use from the start. These are written through program carriers and often placed in the surplus lines market.
The assumption is nightly rental. The structure typically pairs open-perils property coverage on a replacement cost basis with business personal property for the furnishings, business income measured on actual nightly revenue, and commercial general liability sized for guest injury. Amenity exposures like hot tubs, pools, docks, and trampolines get underwritten up front instead of discovered during a claim. Some programs add sublimits for guest theft, bed bugs, and assault and battery.
The trade-offs are real. Surplus lines carriers are not backed by state guaranty funds, so there is no state fund standing behind the claim if the carrier fails. Rates are not filed the way admitted rates are. Premium is often higher. Underwriting asks operational questions about occupancy limits, screening, and maintenance, and your answers move the price.
What you get in return is a contract drafted with paying guests in mind, which takes the argument about permitted use off the table before it starts.
How to find out which one you have
Pull your declarations page. Not the summary email and not the app screen. The declarations page itself.
Find the forms and endorsements schedule. It is usually a list on the second or third page, printed small, with entries like HO 00 03 10 00 or DP 00 03 07 88. The first six characters identify the form. The last four are the edition date.
Then read the description of the insured location and compare it against how the property runs this year. If the contract describes a residence and the property hosts guests forty weekends a year, the policy and the operation are describing two different buildings.
The question underneath all five
There is no best form. There is one form whose assumption matches your operation and four that do not.
A lake cabin you use six weeks a year and rent thirty is a different underwriting problem from a purpose-built rental you have never spent a night in. A duplex where you live upstairs and rent the lower unit nightly is a third problem again. Each of those has a form that fits. Each of them gets written on the wrong form regularly, because the wrong form is cheaper and nobody says the occupancy question out loud.
The cost of a mismatch does not appear at purchase. It appears at claim, when an adjuster reads the definition of residence premises and asks who was staying in the house on the night of the loss.
If you are not sure which form your policy uses, that is the first thing any review looks at. Start with a free Risk Score. Thirty checks across six risk domains, about eight minutes, no email required to see your results.
This article is the first in a series on short-term rental insurance fundamentals. Threshold STR reads policies against how properties actually operate, and delivers a written, ranked summary of the gaps.