One Airbnb booking can leave a London landlord uninsured — and in breach of mortgage or lease terms

A single Airbnb booking can be enough to put a landlord outside standard insurance cover — even if the stay lasts only a weekend.

That is the practical warning for London landlords considering short lets. If a policy excludes paying guests, holiday lets or an undisclosed change in use, a later claim for fire, flood, theft or guest injury may be refused. In some cases, the insurer may also cancel the policy.

One short let can change the risk in the insurer’s eyes

The danger is not the platform itself but the change in occupation. A property insured for ordinary residential use may be treated differently once it is offered for short-term paid stays. If the insurer was not told in advance, the issue often surfaces only after a claim.

Before listing, review the wording of every relevant policy for references to paying guests, short-term letting, holiday lets, business use or similar terms. If the wording is unclear, ask the insurer or broker in writing whether one-off bookings, room lets or repeated weekend stays are covered. If they will not confirm cover clearly, treat that as a warning sign.

Platform protection is not a substitute for insurance

Airbnb AirCover and similar schemes should not be mistaken for full insurance. They may help in some scenarios, but they are not a replacement for properly underwritten buildings, contents and liability cover.

Landlords should check whether their own arrangements deal adequately with:

• escape of water
• fire damage
• theft
• malicious or accidental damage by guests
• public or property owners’ liability
• loss of rent or booking income
• unoccupied periods between stays

Insurance is only the first hurdle

A compliant policy does not solve everything. Mortgage conditions often restrict holiday lets, serviced accommodation or other short-term occupation. For mortgaged landlords, one undeclared booking can become both an insurance issue and a lender issue.

Leasehold flats bring another layer of risk. Many London leases restrict business use, nuisance, short stays or transient occupation. So even where an insurer is willing to extend cover, the lease may still block Airbnb-style use.

London’s 90-night rule is separate — and still matters

In Greater London, the short-term letting of residential premises is generally limited to 90 nights in a calendar year unless planning permission has been granted for a material change of use. That rule sits separately from insurance, but it matters for the same reason: landlords need every part of the arrangement to line up before the listing goes live.

A property can be within the 90-night limit and still be uninsured. Equally, valid insurance will not cure a mortgage breach, a lease breach or a planning problem.

Written confirmation matters more than assumptions

If an insurer agrees to short-let use, keep the evidence. That means the email, endorsement, revised schedule or replacement policy showing the insurer was told about the intended use and accepted it.

If standard cover excludes short lets, the answer is specialist short-let or holiday-let insurance. For London landlords with furnished flats, this is also the moment to check single-item limits for higher-value contents such as electronics, artwork or designer furniture.

Three checks before accepting a booking

1. Review the policy wording for any exclusion or condition relating to paying guests or short-term use.
2. Get written confirmation from the insurer and, if the property is mortgaged, the lender before marketing begins.
3. Check the lease and London planning position, including whether the 90-night annual threshold could be exceeded.

Rentals & Sales can review a proposed London short-let against insurance wording, lender conditions, lease restrictions and the 90-night rule before you market the property.