What Is Home Insurance? Buildings and Contents Explained

Home insurance is really two types of cover under one name: buildings insurance, which protects the structure of your home, and contents insurance, which protects what’s inside it. You can buy them separately or as a combined policy, and they answer two different questions — could you afford to repair or rebuild your home if it were seriously damaged, and could you afford to replace everything in it?

If you’re buying with a mortgage, one half of that pair isn’t usually optional: most lenders require buildings insurance to be in place as a condition of the loan. The other half, contents cover, is your choice — but for most households it’s the difference between an insurance claim and an expensive shock.

This guide explains what each type of cover does and doesn’t include, when most lenders require buildings insurance, the rebuild-cost confusion that leaves homes underinsured, the factors that shape your cover and premium, and how to choose a policy sensibly rather than just cheaply.

What does buildings insurance cover?

Buildings insurance covers the structure of your home — the bricks-and-mortar elements you couldn’t take with you if you moved. That generally means:

• The structure itself — walls, roof, floors, windows, doors and foundations.
• Permanent fixtures and fittings — fitted kitchens, bathroom suites, built-in wardrobes.
• Outside structures — depending on the policy, garages, sheds, fences, driveways and garden walls.

It protects against insured events such as fire, storm and flood damage, subsidence, escape of water (the insurance term for burst pipes and serious leaks), falling trees, vandalism and impact damage. The policy is designed to pay for repairs — or, in the worst case, for rebuilding the home entirely.

Policies vary in their exact wording, limits and exclusions, so it’s always worth reading the policy documents rather than assuming. A useful mental test: if you turned the house upside down and shook it, buildings insurance covers everything that wouldn’t fall out.

What does contents insurance cover?

Everything that would fall out is contents: furniture, electronics, clothes, jewellery, kitchenware, carpets and curtains, books, bikes, toys — the accumulated stuff of a household. Contents insurance covers your possessions against events such as theft, fire, flood and escape of water.

Three details matter more than people expect:

• Single-item limits. Most policies cap what they’ll pay for any one item — so a particularly valuable ring, watch, bike or camera may need to be listed individually on the policy to be fully covered.
• Accidental damage is usually an optional extra rather than standard. Standard cover handles theft and fire; it’s the accidental-damage add-on that handles a TV knocked off the wall or paint spilled into a carpet.
• Possessions away from home — items you carry out of the house, like phones, laptops and jewellery — typically need another optional extension.

Before you buy or renew, it’s worth walking from room to room and putting a rough replacement value on what you own. Most people underestimate it significantly, and a cover figure plucked from the air is how shortfalls happen.

What doesn’t home insurance usually cover?

No policy covers everything, and the common exclusions are worth knowing before you ever need to claim. Typically excluded are:

• General wear and tear — insurance covers sudden, unexpected events, not a roof reaching the end of its natural life.
• Gradual damage and poor maintenance — a slow leak that’s been staining the ceiling for months is usually treated differently from a burst pipe.
• Damage while the home is left empty — most policies restrict cover once a property has been unoccupied for more than a set period, often around 30 to 60 days.
• Pest and vermin damage — usually excluded as a maintenance issue.
• Anything above the policy limits — including single high-value items that weren’t declared.

None of this makes a policy bad — it’s how home insurance works across the market. It does mean the detail of your policy matters, which is the theme of this whole guide.

Do you need home insurance to get a mortgage?

Buildings insurance: usually yes. Most mortgage lenders require buildings cover to be in place as a condition of the loan, because the property is their security — if it burned down uninsured, the loan would be secured against a pile of rubble. In practice, you’ll need cover arranged from exchange of contracts, the point at which you’re typically committed to the purchase and become responsible for the property — not from moving-in day, which catches some first-time buyers out. If you’re at that stage, our first-time buyer page covers what else to expect.

Contents insurance: no — it’s your choice. No lender requires it, and no law does either. But the same logic that makes buildings cover almost always compulsory makes contents cover sensible: most households couldn’t comfortably absorb the cost of replacing everything after a fire or flood.

Two common exceptions to the “arrange buildings cover yourself” rule:

• Leasehold flats — the buildings insurance is usually arranged by the freeholder or management company for the whole block and paid through your service charge. You’ll need evidence of it for your lender, but you don’t buy it yourself — you only need to arrange contents cover.
• Tenants — buildings insurance is your landlord’s responsibility, not yours. Your possessions are a different matter: a landlord’s policy won’t cover them, so contents insurance is worth considering even when renting. The same goes for students living away from home, whose belongings aren’t automatically covered.

Rebuild cost vs market value: the confusion that causes underinsurance

This is the single most common home insurance mistake we see, so it deserves its own section.

Your buildings sum insured should be the rebuild cost — not the market value. They’re different numbers answering different questions. Market value is what someone would pay for your home, land and location included. Rebuild cost is what it would take to reconstruct the building from scratch — labour, materials, demolition, professional fees — and it’s often lower than market value, because nobody has to buy the land twice. For some properties, though — period homes, listed buildings, non-standard construction — the rebuild cost can actually be higher than the market value.

Why it matters: if your sum insured is too low, you’re underinsured, and that can affect every claim, not just a total loss. Many policies apply a principle insurers call “average” — if you’ve insured the building for half of what it would cost to rebuild, the insurer may reduce claim payouts proportionately, leaving you to fund the difference yourself.

Getting the figure right isn’t guesswork. A chartered surveyor can calculate it, and the Building Cost Information Service (BCIS) provides a free online rebuild cost calculator suitable for typical homes. Many policies index-link the sum insured so it rises with building costs each year — helpful, but only if the starting figure was right, and worth revisiting after any extension or major improvement. We’ve written more about this in the home insurance detail many homeowners miss.

What affects your home insurance cover and premium?

When you apply for home insurance, the questions you’re asked all feed the insurer’s view of the risk. The factors that tend to matter most:

• The property itself — its age, size, construction type and rebuild cost. Homes classed as non-standard construction — flat roofs over a certain proportion, thatch, timber frame, listed buildings, unconventional materials — typically need specialist policies, so flag this early rather than discovering it at claim time.
• Location — including flood risk and local claim patterns.
• Security — the locks on your doors and windows, and any alarm.
• Your claims history — previous claims generally increase premiums; many policies offer a no-claims discount in the other direction.
• Your excess — the part of any claim you pay yourself. A higher voluntary excess usually lowers the premium (more on this below).
• How you pay — spreading the premium over monthly instalments usually costs more across the year than paying annually, because most insurers charge interest on instalments. If you pay monthly, check the total payable, not just the per-month figure.

One related note: if you’re buying a property to let out, standard home insurance isn’t designed for it — landlords need landlord insurance, and may want to consider extras such as rent guarantee and legal expenses cover. That’s a topic of its own, and one we’re happy to talk through.

How to choose a home insurance policy sensibly

There’s no single “right” price for home insurance — the aim is the right cover at a fair price, and the cheapest quote on a comparison site is often cheap for a reason. A sensible way to compare:

1. Start from the cover, not the price. Check the buildings sum insured (or that it’s a “blanket” policy with a high automatic limit), and that your contents figure reflects what you actually own.
2. Check the excesses — both the compulsory excess set by the insurer and any voluntary excess you’ve added. If your policy has a £250 excess and you make a valid £1,000 claim, you receive £750. A bigger voluntary excess cuts the premium, but only makes sense if you could comfortably pay it on a bad day. Watch for the higher compulsory excesses that often apply to specific claim types such as subsidence and escape of water.
3. Check the limits and extras — single-item limits against your valuables, and whether you want accidental damage, possessions away from home, home emergency cover or legal expenses added.
4. Be accurate and complete on the application. The information you give forms the basis of the contract — guessing the property’s age or overlooking a question about flat roofs can cause real problems at claim time.
5. Think about the claim, not just the purchase. How easy the insurer is to reach, and how it handles claims, matters precisely when you’re least equipped to fight about it.

A few pounds a month of difference between policies is trivial compared to the cost of discovering — mid-claim — that the cheaper one didn’t cover what you assumed it did.

Home insurance FAQs

Is home insurance a legal requirement in the UK?

No. There’s no law requiring home insurance. But if you have a mortgage, most lenders will require buildings insurance as a condition of the loan, which makes it compulsory in practice for most homeowners. Contents insurance is always optional — though going without it means self-insuring everything you own.

Do tenants need home insurance?

Tenants don’t need buildings insurance — that’s the landlord’s responsibility. Contents insurance is worth considering, though, because the landlord’s policy doesn’t cover your possessions. The same applies to students renting or living in halls.

What is a policy excess?

The excess is the amount you pay towards any claim. Policies usually have a compulsory excess set by the insurer, and you can often add a voluntary excess on top to reduce the premium. Always check the total excess you’d actually pay before buying — it’s the first number that matters when you claim.

How do I work out my home’s rebuild cost?

Don’t use the market value — it’s a different number. For a typical home, the Building Cost Information Service (BCIS) offers a free online rebuild cost calculator; for unusual, listed or non-standard properties, a chartered surveyor can calculate it properly. Revisit the figure after extensions or major improvements.

Does home insurance cover storms and flooding?

Storm and flood damage are core insured events on most buildings and contents policies — they’re among the most common causes of serious claims. But definitions, exclusions and excesses vary between policies, so check the wording, particularly if you live in an area with known flood risk.

Should I just pick the cheapest policy?

We’d suggest not — at least, not on price alone. The cheapest policy may carry higher excesses, lower limits or fewer insured events. Compare the cover first, confirm it actually fits your home and possessions, and then let price decide between policies that genuinely protect you.

Here to help you

Between comparison sites, optional extras and policy small print, finding cover that genuinely fits your home can take more untangling than it should. We can help: we have access to a wide panel of insurers and will talk through your circumstances in plain English, so the policy protecting your biggest asset is one you actually understand. And once the bricks and contents are covered, it’s worth thinking about protecting the people inside them too.

Book a no-obligation chat and we’ll happily look at it with you — whether you’re buying your first home or just suspicious of this year’s renewal quote.

Should you fail to disclose or misrepresent a fact, then you risk the insurer only paying part of the claim, declining to pay all of the claim, and possibly declaring the policy invalid.

All the information in this article is correct as of the date of last update (11 June 2026). The information provided in this article, including text, graphics and images does not, and is not intended to, substitute advice; instead, all information, content, and materials available in this article are for general informational purposes only. Policy features, terms, limits and exclusions vary between insurers — always check the policy documents before buying or renewing.