Buildings Insurance

Definition

Buildings insurance covers the structural elements of your property against defined perils (fire, storm, flood, subsidence, burst pipes, impact, vandalism, and others depending on the policy). In the US, the equivalent is the dwelling coverage component of a homeowners policy.

What buildings insurance typically covers:

• Walls (external and structural internal)
• Roof
• Floors, ceilings, and staircases
• Fixed kitchen and bathroom fittings
• Integral garages and outbuildings
• Pipes, cables, drains, and service infrastructure within the property boundary

What it typically does not cover (without specific endorsements):

• Movable contents and personal belongings — that is contents insurance
• Flood damage (usually a separate policy or endorsement in both UK and US markets)
• General wear and tear, gradual deterioration, or maintenance failures
• Damage caused by the homeowner’s negligence in most cases

The rebuild value vs market value distinction

Buildings insurance is based on the rebuild cost of your property, not its market value. These can differ substantially:

• A listed building or property in a high-demand area may have a market value of $800,000 but a rebuild cost of $400,000.
• A large period property in a rural area may have a market value of $300,000 but a rebuild cost of $600,000 due to specialist materials and labour.

Getting the rebuild cost wrong in either direction creates a problem:

• Over-insuring: you pay a higher premium than necessary; the insurer still only pays the actual rebuild cost on a claim.
• Under-insuring: a phenomenon called the “average clause” in UK policies means if you are under-insured, your payout is proportionally reduced. If you have insured for 60% of the actual rebuild cost, the insurer may only pay 60% of any claim, even for small partial losses.

Who needs buildings insurance

Mortgage lender requirement: In the UK, mortgage lenders require buildings insurance from the date of exchange of contracts. In the US, your mortgage lender will require proof of homeowners insurance (which includes dwelling coverage) from the date of closing. This is not optional — if you do not arrange it, the lender will buy “lender-placed” insurance on your behalf, which is typically more expensive and covers only the lender’s interest, not yours.

Leaseholders in flats: In the UK, if you own a leasehold flat, the freeholder (building owner) is usually responsible for buildings insurance, funded through the service charge. You typically need only contents insurance. In the US, if you own a condo, the condo association’s master policy covers the structure; you need a condo (HO-6) policy for your unit and contents.

Buildings insurance and the replacement cost question

The replacement cost vs actual cash value distinction applies to buildings insurance as much as contents. A buildings policy written on an ACV basis (less common but it exists) would depreciate the value of your roof, windows, and systems at claim time. Standard practice in the UK is to provide full rebuild cost coverage; in the US, standard HO-3 policies provide replacement cost for the dwelling but you should confirm this in your policy documents.