What Does Building Insurance Cover?

At Towerstone, we provide specialist property accountancy services for homeowners, landlords, and property investors. We have written this article to explain what building insurance usually covers, helping you make informed decisions.

Buildings insurance is one of the most important protections you can have as a homeowner, yet many people only have a vague idea of what it actually covers. Some assume it protects everything inside the house. Others think it only matters if something catastrophic happens. In reality, buildings insurance sits at the heart of home ownership and covers far more than people expect, while also excluding things many assume are included.

Understanding what buildings insurance covers, what it does not cover, and how policies differ is essential. It affects mortgage approval, financial security, and how you recover if something goes wrong. This guide explains buildings insurance in clear UK terms, without jargon, and reflects how policies work in practice rather than just how they are advertised.

What Buildings Insurance Is Designed to Do

Buildings insurance is designed to protect the physical structure of your home. Its purpose is to pay for repairs or rebuilding if the property is damaged by certain insured events.

A simple way to think about it is this. If you turned your house upside down, anything that would fall out is usually contents. Anything that stays attached is usually buildings.

Buildings insurance is about putting the property back to how it was before the damage, not upgrading or improving it.

What Counts as the “Building”

Buildings insurance usually covers the permanent parts of your home. This typically includes the main structure and anything fixed in place.

Common examples include walls, floors, ceilings, and the roof. It also covers windows and doors, fitted kitchens and fitted bathrooms, built in wardrobes, staircases, and internal walls. Garages, sheds, and outbuildings are often included, as are permanent driveways, patios, and boundary walls, although this varies by policy.

Fixtures such as boilers, central heating systems, radiators, and fixed pipes are also usually part of the buildings cover.

If removing something would require tools or cause damage, it is likely part of the building.

Events Buildings Insurance Usually Covers

Buildings insurance does not cover everything. It covers damage caused by specific insured risks, often referred to as perils. Most standard UK policies include a core set of risks.

One of the most important is fire and smoke damage. This includes damage caused by accidental fires, electrical faults, and smoke damage even where flames did not spread far.

Storm damage is another major area of cover. This usually includes damage caused by high winds, heavy rain, hail, or snow, such as tiles being blown off a roof or water entering due to storm conditions.

Flooding is commonly covered, although definitions matter. Flood cover usually refers to water from external sources like rivers, surface water, or heavy rainfall, not internal leaks.

Escape of water is also typically included. This covers damage caused by burst pipes, leaking tanks, or broken appliances that release water into the structure of the building.

Subsidence, heave, and landslip are often included, although these come with higher excesses and stricter conditions. These relate to movement of the ground beneath the property and can be some of the most expensive claims.

Buildings insurance also usually covers damage caused by falling trees, branches, or aerials, and by impact from vehicles or aircraft.

Vandalism and malicious damage are commonly included, particularly where the property is occupied.

Accidental Damage Cover

Accidental damage is an area that causes confusion.

Some policies include accidental damage as standard, while others offer it as an optional extra. Accidental damage refers to sudden, unexpected physical damage caused unintentionally.

Examples include drilling through a pipe, putting a foot through the ceiling while in the loft, or cracking a sink or toilet accidentally.

Wear and tear is not accidental damage. Nor is damage caused by gradual deterioration.

It is important to check whether accidental damage is included or needs to be added separately.

What Buildings Insurance Does Not Cover

Just as important as what is covered is what is not covered.

Buildings insurance does not usually cover general wear and tear. Over time, roofs age, pipes corrode, and materials deteriorate. Insurance is not a maintenance contract and will not pay for repairs simply because something has worn out.

Poor maintenance is also excluded. If damage occurs because a property was not properly maintained, insurers may refuse the claim. For example, a long term roof leak ignored for years may not be covered.

Defective workmanship and poor construction are usually excluded. If an extension was built badly and later fails, insurance may not pay for the cost of putting it right.

Cosmetic damage that does not affect the structure is often excluded, particularly if it is minor.

Damage caused by pests such as rats, mice, or insects is not normally covered.

Flood and Subsidence Are Special Cases

Flooding and subsidence deserve special attention because they are high risk and high cost events.

Flood cover is usually included in standard policies, but properties in high risk areas may face higher premiums, exclusions, or difficulty obtaining cover. The source of the water matters, and insurers distinguish between flooding and escape of water.

Subsidence cover is usually included, but claims often involve large excesses, sometimes thousands of pounds. Insurers also require evidence and investigation before accepting liability.

If you make a subsidence claim, it can affect future insurance availability and costs.

What About New Builds and Warranties?

New build properties often come with structural warranties, commonly lasting ten years. These warranties cover certain defects but are not a replacement for buildings insurance.

Buildings insurance is still needed to cover fire, flood, storm damage, and other insured risks. The warranty only covers specific construction defects and usually only after the builder’s initial liability period.

Leasehold Properties and Flats

If you own a flat, buildings insurance is often arranged by the freeholder or management company.

In this case, the building is insured under a block policy, and the cost is recovered through service charges. You are still covered, but you do not arrange the policy yourself.

You should always check what the block policy covers and what excess applies, especially for water damage, which can be significant in flats.

Contents insurance is still your responsibility as a flat owner.

Buildings Insurance and Mortgages

If you have a mortgage, buildings insurance is effectively mandatory.

Mortgage lenders require buildings insurance to be in place from exchange of contracts. The policy must insure the property for its full rebuild cost and meet the lender’s minimum requirements.

If you fail to arrange insurance, the lender may arrange cover on your behalf and charge the cost to you. This lender arranged insurance is usually more expensive and less comprehensive.

Rebuild Cost Versus Market Value

Buildings insurance is based on rebuild cost, not market value.

Rebuild cost is the amount it would cost to completely rebuild the property from scratch, including materials, labour, professional fees, and debris removal.

Market value includes the value of the land and location, which insurance does not need to replace.

Insuring for the wrong amount can cause problems. Underinsurance can lead to reduced payouts, while overinsurance means paying higher premiums unnecessarily.

Additional Cover You May Need

Standard buildings insurance may not cover everything you want protected.

Depending on your property, you may need additional cover for things like legal expenses, which can help with disputes relating to the property.

Home emergency cover is sometimes added. This covers urgent issues like boiler breakdowns or electrical failures, but it is separate from buildings insurance.

Alternative accommodation cover is usually included and pays for temporary housing if your home becomes uninhabitable due to an insured event.

Buildings Insurance for Landlords

Landlords usually need specialist landlord buildings insurance rather than standard home insurance.

Landlord policies often include cover for tenant related risks, loss of rent, and liability. Standard residential policies may be invalid if the property is rented out.

Using the wrong type of policy can invalidate cover entirely.

Common Reasons Claims Are Rejected

Many rejected claims are not because insurers are unfair, but because policy terms were misunderstood.

Claims are often rejected due to lack of maintenance, gradual damage rather than sudden events, exclusions for certain risks, or failure to disclose relevant information such as previous flooding or subsidence.

Understanding the policy wording and keeping the property maintained reduces the risk of disputes.

How Excess Works

Most buildings insurance policies include an excess, which is the amount you pay towards a claim.

Standard excesses might be a few hundred pounds, but for subsidence or flood claims they can be much higher.

Choosing a higher excess can reduce premiums, but it increases your out of pocket cost if you claim.

Making a Buildings Insurance Claim

If you need to make a claim, you usually need to notify the insurer promptly and take reasonable steps to prevent further damage.

Insurers may send loss adjusters or contractors to assess the damage. You should keep records, photographs, and receipts.

Do not start major repairs without insurer approval unless it is an emergency.

My Professional View

In my professional experience, most homeowners underestimate how broad buildings insurance cover is, and at the same time assume it covers things it does not.

The biggest risks are underinsurance, poor maintenance, and misunderstanding exclusions. A well chosen buildings policy, based on accurate rebuild costs and appropriate cover options, provides essential protection for what is usually your most valuable asset.

Final Thoughts

So, what does buildings insurance cover in the UK?

Buildings insurance covers the structure of your home and its permanent fixtures against specific insured risks such as fire, storm, flood, escape of water, subsidence, and impact. It is not a maintenance policy and does not cover wear and tear, poor workmanship, or gradual deterioration.

While not always legally mandatory, buildings insurance is effectively essential if you have a mortgage and strongly advisable even if you do not. Understanding exactly what your policy includes and excludes allows you to insure your home properly and avoid unpleasant surprises when you need it most.

Taking time to review your buildings insurance is not just a box ticking exercise. It is a key part of protecting your home, your finances, and your peace of mind.

If you would like to explore related property guidance, you may find how much is council house rent and what does it mean when a house is under offer useful. For broader property guidance, visit our property hub.