Buildings Insurance Guide

Buildings insurance exclusions and common mistakes

Written by Lerato Molefe Personal Insurance Writer Reviewed by Nomsa Dlamini RE5 qualified · 12 years in short-term insurance Updated 28 July 2026 Our editorial standards →

What is not covered by buildings insurance?

Buildings insurance covers sudden, unforeseen events, so it excludes gradual and preventable damage - wear and tear, ageing, poor maintenance, slow leaks, damp and rust, and defective workmanship or design. Subsidence is often excluded unless specifically added, and cover narrows on unoccupied properties. Pest damage, general deterioration and consequential loss are also typically excluded. Most rejected claims trace back to maintenance or under-insurance, not the event itself.

Key takeaways

Cover is for sudden, unforeseen events - not slow, gradual or preventable damage.
Wear, tear and poor maintenance are the leading reasons buildings claims are rejected.
Subsidence and landslip are often excluded unless specifically added to the policy.
Defective workmanship, gradual leaks, damp, pests and unoccupancy are common exclusions.
Under-insuring and failing to declare changes are avoidable mistakes that cost you at claim time.

The core principle: sudden, not gradual

Every exclusion flows from one idea: insurance covers the sudden and unforeseen, not the slow and expected. A pipe that bursts overnight is an insured event; the same pipe corroding over years is wear and tear. Understanding this line explains most declined claims. Insurers are not covering the natural ageing of your home or the consequences of leaving problems unattended - they are covering the shock events you could not have prevented with reasonable care.

Wear, tear and lack of maintenance

This is the single biggest source of rejected buildings claims. Gradual roof leaks, rising damp, rotting timber, rusted gutters and perished waterproofing are all treated as maintenance, not insured damage. If a storm exploits a roof you failed to maintain, the insurer may argue the loss was caused by the neglect rather than the weather. Keeping the roof, gutters, waterproofing and plumbing in good order is not just sensible upkeep - it is what keeps your cover valid when you need it.

Other common exclusions

Beyond maintenance, watch for these:

Subsidence and landslip - frequently optional or excluded, especially in dolomite or mining areas (see subsidence cover)
Defective design or workmanship - faults built into the property
Gradual water seepage and damp, as opposed to a sudden burst
Pests and vermin - termite, borer and rodent damage
Unoccupancy beyond the policy limit (see unoccupied home cover)

The grey areas

Some claims sit on the boundary. A burst pipe is covered, and so is the water damage it suddenly causes - but the worn pipe itself is usually not replaced by the insurer. Storm damage to a sound roof is covered; the same storm on a neglected roof may not be. Accidental damage is only covered if you have added that accidental damage extension. When a loss straddles the line, the cause and the condition of your home decide the outcome, which is why documentation and maintenance records matter.

Mistakes to avoid

Most disputes are avoidable. Do not under-insure - the average clause will cut your payout. Declare renovations, a new pool or a solar installation, or you may find them uninsured. Keep up maintenance and retain proof of it. Read your policy schedule so you know which extensions you have and which you do not. Getting these basics right is what turns a policy on paper into a claim that actually pays.

Frequently asked questions

What is not covered by buildings insurance?

Gradual and preventable damage - wear and tear, ageing, poor maintenance, slow leaks, damp and rust - plus defective workmanship, pests, and unoccupancy beyond the policy limit. Subsidence is often excluded unless added. Cover is for sudden, unforeseen events only.

Why was my buildings insurance claim rejected?

The most common reasons are wear and tear or poor maintenance being blamed for the damage, under-insurance triggering the average clause, or an undeclared change to the property. Reviewing the cause of loss and your policy conditions usually explains the decision.

Does buildings insurance cover gradual water damage or damp?

No. Slow seepage, rising damp and gradual leaks are treated as maintenance issues, not insured events. A sudden burst pipe and the damage it causes are covered, but ongoing damp that develops over time is excluded.

Is subsidence covered by buildings insurance?

Not always. Subsidence and landslip are frequently an optional add-on and may be excluded entirely in high-risk areas such as dolomite or mining ground. Check your schedule, and see our guide to subsidence and natural-disaster cover for detail.

Does poor maintenance void my buildings insurance?

It can lead to a claim being rejected if the damage is attributed to neglect rather than a sudden event. Insurers expect reasonable upkeep of the roof, plumbing and waterproofing. Keeping the property maintained - and proof of it - protects your ability to claim.

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