Buildings insurance on a flat is not your job — usually
If you own a leasehold flat, the buildings insurance that covers the structure of the building — the walls, roof, communal stairwells, and shared areas — is typically the freeholder's responsibility, not yours. Your lease will spell this out, and in most cases the freeholder either arranges the buildings cover themselves or delegates it to a managing agent who adds it as part of the service charge. You pay for it, indirectly, through your service charge — but you don't arrange it, and you have no direct relationship with the insurer.
This matters because it means that if you call your own insurer about a leak from the roof, they'll tell you that's not their policy to deal with. The claim goes to the freeholder's insurer, via the freeholder or managing agent. Understanding this division before you need it — before there's water coming through your ceiling at 11pm on a Sunday — saves a lot of confusion at an already stressful moment.
What you actually need to insure yourself
Contents insurance is your own responsibility as a leaseholder and, unlike buildings cover for a flat, it is not compulsory — but declining to arrange it leaves you exposed in ways that can be extremely costly. Contents insurance covers your belongings inside the flat: furniture, electronics, clothing, jewellery, white goods that you own rather than the landlord providing, and so on. It also typically covers items that belong to the flat's fabric but fall on your side of the lease responsibility line — carpets, internal doors, bathroom fittings in some policies.
The amount of cover you need depends on what you own. Insurers estimate the average UK household has £35,000 worth of contents, but that varies enormously. Don't guess — go room by room and total it up, being honest about what it would cost to replace items at today's prices, not what you originally paid. Underinsuring is a real risk: many policies include a proportional settlement clause, meaning if you insure for £20,000 but actually have £40,000 of contents, a £10,000 claim might only pay out £5,000.
Checking what the freeholder's buildings policy actually covers
Here is where a lot of leaseholders get caught out: they assume the freeholder's buildings policy covers everything structural, and their own contents policy fills the gap. That's mostly true, but the details of the freeholder's policy matter for a few specific scenarios.
Trace and access cover is one of them. If a leak develops inside a wall and the insurer needs to break through the plaster to find and fix the pipe, trace and access cover pays for the investigative work and the reinstatement of surfaces. Not all buildings policies include this as standard, and the presence or absence of it determines whether that cost falls on the insurer or on the leaseholders through the service charge. Ask your managing agent what the buildings policy includes and, if possible, request a copy of the policy schedule rather than just their summary.
Accidental damage cover is another variable. Some freeholder buildings policies are fairly basic and don't include accidental damage to fixed glass, sanitary ware, or underfloor heating. You can often add accidental damage extensions to your own contents policy to fill these gaps, but you need to know the gap is there first.
Leasehold improvements and alterations
If you've made significant improvements to your flat — a kitchen renovation, a new bathroom, structural changes approved by the freeholder — the question of who insures those improvements is genuinely ambiguous in many leases. Original fixtures and fittings generally fall under the freeholder's buildings policy. Improvements you've added may or may not be included, depending on how the policy defines the insured property.
The safest approach is to notify your managing agent of significant improvements when you make them, ask whether the buildings policy will cover them, and get the answer in writing. If the buildings policy won't cover your new £12,000 kitchen in the event of a flood, that's something your contents policy needs to extend to — and many standard contents policies do cover leaseholder improvements, but you have to declare them and they need to be within the policy's limit.
The excess problem on freeholder policies
One practical issue that trips up flat owners: the excess on a freeholder's buildings policy can be substantially higher than you'd expect from a personal insurance policy. Excesses of £500–£2,500 are not unusual on block insurance. When a claim is made, that excess is typically recovered from the leaseholders through the service charge — sometimes spread across all flats, sometimes charged only to the flat involved in the claim.
Excess insurance, which reimburses you for the excess you pay when making a claim, can be bought as a standalone product or as an add-on to a contents policy. On older blocks with high block insurance excesses, this cover costs relatively little and can save a meaningful amount on a single claim. Whether it's worth the premium depends on the excess figure and how likely you think a claim is, but for flats in older buildings with higher maintenance risk, it's worth pricing up.
Renters in leasehold flats — a different but parallel situation
If you rent a flat rather than own it, the buildings insurance responsibility sits with the landlord, not the freeholder — though in practice the landlord's obligation is typically fulfilled via the freeholder's block insurance in most managed buildings. Your responsibility as a tenant is identical to what it is for an owner-occupier on the contents side: your belongings are not covered by either the landlord's or freeholder's insurance, and you need your own contents policy.
Landlord contents insurance — which covers furnishings the landlord has provided — is the landlord's responsibility, not yours. But your own laptop, your own clothing, your own belongings brought to the flat are outside that cover regardless of what your landlord has arranged.
Reading your lease before buying cover
The single most useful thing you can do before buying insurance for a leasehold flat is read the relevant sections of your lease — specifically the clauses on insurance obligations, the definition of the demised premises (what you actually own as a leaseholder), and who is responsible for what when damage occurs to shared or disputed areas. Lease language is not always clear, but knowing broadly where the lines are drawn means you can identify the gaps before an adjuster tells you at the point of a claim.