Is rental arbitrage even insurable?

Yes, and routinely. The policy insures you as the operator of a short-term rental business in property you lease, with the landlord added as an additional insured and a certificate to prove it. Carriers attach one condition that matters: the lease permits it. Operating nightly against a lease that forbids subletting is a lease problem, and no policy fixes a lease problem.

Does the owner’s homeowners policy cover me as their co-host?

No. It excludes the business for the owner, so it excludes it for anyone helping run the business, and a homeowners carrier that learns of the listing from a claim will apply the exclusion to the owner and the manager alike. A co-host protected by the owner’s policy is a co-host whose owner holds a short-term rental policy, and it is fair to make that a condition of taking the account.

What limit does a landlord usually ask for?

One million dollars per occurrence in general liability is the common lease requirement, with the landlord named as additional insured and a certificate delivered before occupancy. Some leases ask for two million, or for the landlord’s property manager to be named as well. Read the insurance clause of the lease before you quote the account, because the limit in the lease is the limit you buy.

I co-host for a friend informally. Do I still need anything?

If money changes hands, yes. The homeowners form defines business at $2,000 a year in compensation, and a guest hurt on your watch does not ask how formal the arrangement was. The minimum is confirming that the owner’s policy extends to a property manager and that the owner has disclosed the listing to their carrier. If either answer is no, you are managing an uninsured business for a friend, which is not a favor to either of you.

Do I need insurance to co-host or manage Airbnbs I don’t own?

Yes, and which insurance depends on whose name is on the lease. If you manage listings for owners, the cleanest structure is coverage under each owner’s short-term rental policy, which a well-built one extends to the owner’s property manager, plus your own protection for the management income and the professional decisions you make for them. If you lease units and let them nightly yourself, that is rental arbitrage, and you are the host in every sense the platforms and the courts use: you carry the general liability, you add the landlord as an additional insured, and you hand them a certificate before the first guest. What does not work in either case is your own renters or homeowners policy, which excludes business, or the platform’s protection, which was written for the stay rather than for you.

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The detail

Vrbo’s liability program "provides owners and property managers with liability protection for all stays processed online through the Vrbo checkout". Where "the owner, property manager or lessor qualifying as an insured under the Program does not maintain adequate insurance coverage sufficient to cover the rental of the properties they list on the site, the limits and amounts paid on behalf of that insured will be subject to a 25% deductible, payable by that insured."
Vrbo, "Rental Property Liability Insurance Program Summary from Generali U.S. Branch"
Airbnb’s Host Liability Insurance responds only where "the incident must also occur during the Airbnb Stay and the Stay arranged using Airbnb’s Platform", and "does not insure Hosts for damage or loss to their own property or Accommodation."
Airbnb Help Center, "Host Liability Insurance Program Summary"
A personal homeowners policy, and the personal liability form sold with a renters or dwelling policy, exclude injury or damage "arising out of or in connection with a ‘business’ conducted from an ‘insured location’ or engaged in by an ‘insured’"; managing or letting property for a fee is a business under the form’s definition once it pays more than $2,000 in a year.
ISO Homeowners 3 Special Form, HO 00 03 05 11 (Maine Bureau of Insurance forms library)
Personal umbrella carriers state that "losses related to the operation of your business or damage to your business property would generally not be covered by a personal umbrella policy. The exclusion applies even if the business is home-based."
Allstate, "What is umbrella insurance and what does it cover?" (updated June 2026)

What this means for you

Co-hosts: get on the owner’s policy in writing. Ask each owner for their policy and look for the property manager or co-host extension in the liability section. A short-term rental policy written for hosts usually has one; a homeowners policy the owner never disclosed the listing on has nothing for either of you. If an owner is on the wrong form, that is a conversation you want to have before a guest is hurt, because the guest’s lawyer will name the manager whose name is on the messages.
Insure your own income and your own advice. When an owner’s house burns, the owner’s policy pays the owner; your commission on the lost season is not in it unless an endorsement says so. And an owner who believes your pricing, your screening or your cleaner cost them money is a professional liability claim, which no property policy answers. A small management operation carries both.
Arbitrage operators: you are the host, so insure like one. A lease in your name and guests booked by you makes you the operator of a short-term rental business in someone else’s building. Carry general liability at the limit the lease specifies, usually $1 million per occurrence, insure the furniture you bought, and cover the income you lose when a unit is closed while the lease payment continues.
The landlord goes on the policy and gets the paper. Name the landlord as an additional insured, deliver the certificate before the first guest, renew it every year without being asked, and keep it current when you change carriers. A lease that permits short-term subletting almost always requires this, and a lease that forbids it is a problem no insurance solves.
Do not rely on the platform or your renters policy. Vrbo covers property managers on Vrbo stays and charges them a 25% deductible if they carry no insurance of their own; Airbnb covers the stay and nothing else. Your renters or homeowners policy excludes the business, and your umbrella excludes it too. Every one of those is a backstop to a real policy, and none of them is a substitute for one.

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Need this handled?

Reading about it and having it handled are different jobs, and the second one is ours. We place the accounts other brokers decline — claims history, a cancellation, an unusual operation, a business nobody wants to underwrite twice — and we will tell you when the policy you already have is the right one. Tell us the situation and a licensed human replies the same business day.