The short answer
Yes — a subsidence claim usually pushes future buildings insurance premiums up and often raises the subsidence excess, because the property is then recorded as having a movement history. The history attaches to the building, not just the policyholder, so it follows the address even after you sell. Your existing insurer normally has to continue offering cover at renewal once it has accepted a claim, though terms may change. The increase is hard to predict and varies by insurer, but the property is no longer treated as standard risk. A Certificate of Structural Adequacy issued after repairs helps, as it shows the building has been stabilised and signed off by an engineer. Specialist subsidence insurers, and brokers who understand previously affected homes, can be useful at renewal because mainstream comparison sites often decline or heavily load such properties.
A subsidence claim changes how insurers see your property for years afterwards. The sections below explain why premiums rise, how long the history matters, and what you can do to keep cover available and reasonable.
After a claim
- PremiumsUsually rise
- Subsidence excessOften increased
- History attaches toThe property / address
- Existing insurerNormally continues cover
- Helps at renewalCertificate of Structural Adequacy
Why a claim raises your premium
Once you make a subsidence claim, insurers regard the property as higher risk for future movement, even after repairs. That feeds into both the premium and the subsidence excess at renewal. The size of any increase depends on the insurer, the cause of the original movement, the repair carried out and the local ground conditions. Two points matter most for what happens next:
- The history follows the building. Subsidence claims are recorded against the address, so a future owner inherits the same disclosure obligation.
- Your current insurer usually keeps you on. Insurers generally continue cover for an existing customer who has claimed, which protects you from being left without buildings insurance.
It is worth separating two things people often blur together. The first is the cost of the claim itself, which the insurer funds minus your excess. The second is the effect on future premiums, which is about how the property is rated going forward. A subsidence claim affects the second far more than an ordinary claim would, because it changes how the building is categorised rather than simply using up a no-claims position. That is why even a modest subsidence claim can have a lasting effect on what you pay, while the same value of, say, storm damage would not.
How long it affects you
There is no fixed expiry, but insurers commonly ask whether a property has ever suffered subsidence, so the history can affect quotes indefinitely. Some insurers focus on movement within the last 5–10 years, and a property that has been stable since repair, with a Certificate of Structural Adequacy, is viewed more favourably as time passes. You must disclose the history honestly on any new policy; failing to do so can void cover under the Consumer Insurance (Disclosure and Representations) Act 2012.
A useful distinction is between movement that was investigated and signed off and movement that was patched over informally. A claim that ran its full course — investigation, monitoring, repair and certificate — gives a future insurer a clear, evidenced picture, which is easier to price than a vague report of past cracking with no paperwork. Counter-intuitively, a properly handled claim can leave the property in a stronger insurance position than undocumented DIY repairs, because the underlying cause was identified and addressed rather than simply hidden.
What actually drives the size of the increase
There is no published tariff, and increases vary widely, but a few factors consistently shape how much a claim costs you afterwards. The cause matters: damage from a one-off leaking drain that has been repaired is viewed more favourably than ongoing clay-related movement under a property surrounded by mature trees. The repair matters too: a property that needed full underpinning is treated more cautiously than one resolved by drain repair and redecoration. The region and ground type feed in, because shrinkable-clay areas of the South and East of England carry higher subsidence risk generally. And the time since the works is significant — each stable year strengthens your position.
- Single, fixed cause: generally a smaller long-term impact.
- Underpinning carried out: usually a larger and longer-lasting loading.
- Certificate of Structural Adequacy held: evidence that supports better terms.
- Several stable years: gradually eases the premium and excess.
Keeping cover affordable afterwards
Mainstream comparison sites and some insurers decline or heavily load properties with a subsidence history, which can make renewal feel difficult. Several practical routes help: stay with your existing insurer, who already holds the claim and usually continues cover; use a broker or specialist subsidence insurer who understands repaired properties; and keep your Certificate of Structural Adequacy, engineer's report and repair records to hand, as evidence of a completed, signed-off fix can materially improve the terms you are offered. The British Insurance Brokers' Association runs a free Find Insurance signposting service that can point you toward brokers who place non-standard property, which is often the practical answer when comparison sites return declines.
It also helps to think about the property record beyond your own ownership. Because subsidence history attaches to the address, a well-documented, signed-off repair benefits any future sale: a buyer and their lender will want to see the same certificate and engineer's report, and a clean stability record since the works makes the home easier to insure and to sell. Treating the paperwork as a permanent asset of the property, rather than something to file away and forget, pays off both at each renewal and when you eventually move on.
Finally, it is worth being realistic about the size of the effect rather than assuming the worst. A subsidence claim does change how the property is rated, but for a home with a single, fixed cause and a clear certificate, the long-term increase is often more modest than people fear, especially once a few stable years have passed. The cases that attract the steepest loadings are those with ongoing clay-related movement, a history of underpinning, or thin documentation that leaves the insurer pricing uncertainty. If your claim was investigated properly and resolved with a matching repair, you are in the better of those two positions, and a broker who understands repaired homes can usually find terms that reflect that rather than a blanket penalty.
Frequently asked questions
Can my insurer refuse to renew after a subsidence claim?
Insurers generally continue cover for an existing customer who has claimed, rather than refusing renewal outright, though they may change the premium and excess. Finding a new insurer can be harder, which is where brokers and specialist subsidence insurers help.
Does the subsidence history disappear over time?
There is no fixed cut-off, and many insurers ask whether a property has ever suffered subsidence. A property that has been stable since repair, with a Certificate of Structural Adequacy, is viewed more favourably as the years pass.
Do I have to tell a new insurer about a past claim?
Yes. You must disclose a subsidence history honestly on any new policy or renewal. Failing to do so can void your cover under the Consumer Insurance (Disclosure and Representations) Act 2012.
Sources & further reading
- Association of British Insurers — subsidence guidance
- Citizens Advice — home insurance
- British Insurance Brokers' Association — Find Insurance service
Figures on this page are typical UK ranges drawn from published sources and depend on your specific property. They are guidance, not a quotation.