Holiday Let Buildings Insurance: Cover Limits

No UK statute requires a property owner to hold buildings insurance. Your mortgage lender almost certainly does, and your lease may, but there is no legal duty in the way there is for employer's liability.

What that means practically: nobody checks your buildings cover until you claim. And the thing that decides what you get paid is one figure on your schedule — the sum insured — which a large number of holiday let owners have set from the wrong source entirely.

This is general guidance, not insurance advice. Policy wordings and sum-insured mechanics vary between insurers — confirm your own position with a specialist broker and, for the figure itself, a chartered surveyor.

Reinstatement Cost Is Not Market Value

This is the error that costs the most money, and it is easy to make because the two numbers feel like they should be related.

• Market value is what someone would pay you for the property. It includes the land.
• Reinstatement cost is what it would cost to demolish what remains, clear the site, and rebuild the property to its current specification, plus professional fees and the cost of complying with current building regulations.

These diverge in both directions. A cottage in an expensive coastal village might sell for £450,000 but cost £280,000 to rebuild — the premium is in the location, not the fabric. A large stone-built property in a low-value area can be the reverse: modest market value, high rebuild cost because of the materials and the labour needed to match them.

Listed buildings and traditional construction push reinstatement cost up sharply. Lime mortar, slate, sash windows, and heritage-consented specifications are expensive to replicate, and building control will not let you rebuild a listed property in blockwork.

Where the figure should come from: a reinstatement cost assessment by a chartered surveyor. Not the purchase price, not a property-portal valuation, not last year's figure carried forward.

How Underinsurance Actually Cuts Your Claim

Most buildings policies contain a condition of average. Where the sum insured is less than the true reinstatement cost, the insurer reduces the settlement in proportion — including on partial claims, which is the part people do not expect.

The arithmetic, illustratively:

Sum insured: £200,000 Actual reinstatement cost: £300,000 You are insured for two thirds of the risk. A £30,000 fire-damage claim settles at roughly £20,000.

You did not have a total loss. You had a kitchen fire. And you still carry a third of it, because the shortfall applies to every claim, not just catastrophic ones.

Two things follow:

1. Review the figure annually. Construction costs have moved considerably in recent years, and a sum insured set at purchase drifts out of date quickly.
2. Index-linking helps but does not guarantee accuracy. Many policies uplift the sum insured automatically by a construction index. That protects against gradual drift; it does not correct a figure that was wrong at the outset.

What a Holiday Let Policy Adds

A standard residential buildings policy and a holiday let buildings policy insure the same bricks. They respond very differently to the things that actually happen in a let property.

Cover	Standard buildings policy	Holiday let buildings policy
Storm, fire, flood, subsidence	Yes	Yes
Malicious damage by paying guests	Usually excluded	Commonly included
Escape of water during void periods	Restricted by unoccupancy terms	Written around seasonal use
Loss of rental income during reinstatement	Not applicable	Commonly available
Alternative accommodation for guests	Not applicable	Commonly available
Liability arising from the structure	Limited	Included, geared to paying visitors

Loss of rental income is the one hosts most often overlook and most often need. If a fire makes the property unlettable for eight months, the buildings claim rebuilds it — but the mortgage still needs servicing across those eight months with no bookings. Check the indemnity period: 12 months is common, 24 months is safer for anything with planning or heritage complexity, because listed-building reinstatement routinely runs past a year.

Liability arising from the structure matters because your duty of care to guests attaches to the fabric of the building. Under section 2 of the Occupiers' Liability Act 1957 you owe visitors the common duty of care — "to take such care as in all the circumstances of the case is reasonable to see that the visitor will be reasonably safe". (In Scotland the equivalent duty is set by the Occupiers' Liability (Scotland) Act 1960, section 2(1) instead — the 1957 Act doesn't extend there.) A slate coming off the roof onto a guest is both a buildings issue and a liability issue, and you want one insurer holding both rather than two insurers pointing at each other.

The Unoccupancy Trap

This is where seasonal holiday lets get caught, and it is a condition rather than an exclusion — meaning it can operate quietly.

Many policies restrict cover once a property has been unoccupied for a continuous period, commonly 30, 45, or 60 days. After that point, cover for escape of water, theft, and malicious damage is often reduced or withdrawn unless specific conditions are met.

A holiday let that runs March to October and sits empty from November to February will breach a 30-day unoccupancy condition every single winter.

What to check:

• The unoccupancy period in your wording, and whether it is calendar days or consecutive days without a booking
• Whether cover reduces or ceases at that point
• The conditions attached — commonly: water drained down or heating maintained at a minimum temperature, mail cleared, and documented periodic inspections at a stated interval
• Whether inspection records are required to evidence compliance

Specialist holiday let policies are usually written with seasonal voids in mind. Standard policies are not. If you moved onto a specialist product but kept the old assumptions, check this clause specifically.

Freehold, Leasehold, and Lenders

Freehold. The cover is yours to arrange, and the sum insured is your responsibility.

Leasehold. The freeholder or management company typically insures the structure through a block policy, and you pay for it through the service charge. Two questions to resolve: whether that block policy responds to commercial short-term letting at all, and whether the lease permits the letting. Neither is safe to assume — block policies are arranged for residential occupation, and many leases restrict subletting outright.

Mortgaged property. Lenders generally require buildings insurance appropriate to the property's use as a condition of the loan. Letting commercially under a policy that excludes commercial use can breach the mortgage terms as well as leaving you uninsured. Many residential mortgage products also restrict short-term letting independently of the insurance question.

If you are moving a property from personal or second-home use into letting, our holiday home insurance and letting guide covers what changes at that transition.

What to Check on Your Schedule

1. Sum insured — and when it was last set by a reinstatement cost assessment rather than carried forward
2. Whether a condition of average applies
3. Whether index-linking is active
4. Unoccupancy period, and what happens to cover at the end of it
5. Any conditions attached to void periods — heating, drain-down, inspections
6. Malicious and accidental damage by paying guests
7. Loss of rental income, and the indemnity period
8. Alternative accommodation for guests
9. Whether liability arising from the structure is included, and the limit
10. Excesses, particularly separate escape-of-water and subsidence excesses

Keeping the underlying compliance records current makes renewal considerably easier — insurers ask about fire precautions and safety certificates when quoting. Our Compliance Checklist Generator sets out what your property should hold, and the Certificate Expiry Tracker keeps renewal dates in one place.

Where to Go Next

For how buildings cover sits alongside contents, public liability, and employer's liability, see our holiday let insurance types guide. For the contents side of the same schedule — including how average can apply there too — see our holiday let contents insurance guide. For the legal requirements around cover, see our holiday let insurance requirements guide. For the guest-injury side of the structural duty, see our public liability insurance for holiday lets guide.

Sources

• Legislation.gov.uk — Occupiers' Liability Act 1957, section 2
• Legislation.gov.uk — Occupiers' Liability (Scotland) Act 1960, section 2

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Sum-insured mechanics, average clauses, and unoccupancy conditions vary considerably between insurers — the figures above are illustrative. Confirm your own wording with a specialist broker, and obtain a reinstatement cost assessment from a chartered surveyor rather than estimating.