Insurance Outcome
Subsidence insurance when buying a house: what to check before exchange
Subsidence affects buying decisions because it can follow the property through insurance history, future premiums, excesses, lender conditions, and resale confidence. The key is separating historic stable movement from active or unresolved movement.
Last updated: 22 June 2026. Editorially reviewed: 22 June 2026.
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Run a free previewStable history vs active risk
| Scenario | Likely buyer position | Evidence needed |
|---|---|---|
| High clay risk, no claim | Usually manageable. | Survey view, tree/drain checks, insurance quote. |
| Historic claim, fully repaired | Often insurable with disclosure. | Engineer report, claim closure, guarantees. |
| Underpinned property | Lender and insurer case-by-case. | Underpinning documents and specialist quote. |
| Active movement suspected | High risk before exchange. | Structural engineer report and remediation plan. |
What insurers and lenders worry about
Insurers worry about whether the cause is known, whether movement is active, and whether repairs have removed the risk. Lenders worry because buildings insurance is usually required from exchange or completion, and unresolved movement can reduce value.
A past claim is not automatically a reason to pull out. The risk is highest when the property has current cracking, no engineer report, no monitoring, unresolved tree or drain causes, or the seller cannot explain the insurance history.
Evidence that helps insurers quote with confidence
- Seller's buildings insurance history, including any subsidence claims, dates, payouts, and excesses.
- Structural engineer reports, monitoring records, and confirmation movement has stabilised.
- Details of underpinning, resin injection, drain repair, tree management, or other remedial work.
- Guarantees, completion documents, and insurer correspondence confirming claim closure.
- Written quotes from insurers before exchange using accurate disclosure.
Questions to ask before exchange
Ask your broker
- Will the lender accept the insurance terms available for this property?
- Do they need the structural report or insurance schedule before offer or drawdown?
Ask your solicitor
- What has the seller disclosed on the property information form about movement or insurance claims?
- Can the seller provide claim closure letters, guarantees, and engineer reports before exchange?
Ask your surveyor
- Do the cracks look historic, seasonal, progressive, or unrelated to subsidence?
- Is a structural engineer or CCTV drain survey needed before exchange?
Ask your insurer
- Will you offer buildings insurance with subsidence cover from completion?
- What subsidence excess, exclusions, monitoring requirements, or claim-history loadings apply?
When subsidence insurance risk should stop the purchase
- Walk away if you cannot obtain buildings insurance with acceptable subsidence cover before exchange.
- Walk away if movement appears active and the seller refuses engineer access or remediation evidence.
- Renegotiate if historic subsidence is stable but future insurance costs and resale stigma were not reflected in price.
- Pause if the seller says there was no claim but visible evidence or search data suggests otherwise.
Related next steps
Frequently asked questions
Can I insure a house with previous subsidence?
Often yes, especially if movement was repaired and is stable. You must disclose the history accurately and get written terms before exchange.
Will subsidence insurance affect my mortgage?
It can. Lenders normally require suitable buildings insurance. If cover is unavailable, excluded, or too restricted, the lender may not proceed.
Should I use the seller's current insurer?
It can be worth asking because continuity may help after a claim, but still compare terms and check your lender accepts the policy.
Is historic subsidence a reason to pull out?
Not automatically. Pull out if evidence is missing, movement is active, insurance is unacceptable, or the price does not reflect the long-term risk.
Run the check before you commit
MyPropertyScan pulls property-risk signals into one buyer view so you can spot flood, subsidence, EPC, building-age, listed-status, and local-area prompts before you spend more on surveys, quotes, or legal follow-up.
Run the check
Check the property before you offer
Flood, subsidence, EPC, crime, schools, transport, broadband, tenure, age, listed status and price checks where data is available.
Run a free previewHow MyPropertyScan produces this guide, and what it is not
Published by MyPropertyScan and written by Ziad Nasr, who is accountable for its accuracy. No page here is written or reviewed by a chartered surveyor, conveyancer or regulated adviser, and we do not claim otherwise.
This page is not:
- Chartered surveying — we do not inspect properties or produce RICS Home Survey reports
- Legal advice — we do not act as conveyancers or advise on title, tenure or contracts
- Mortgage or insurance advice — we are not regulated by the FCA and give no recommendations
Figures and process steps come from the published UK datasets and standards listed on this page, not from professional practice. Pages are updated when source coverage, survey cost assumptions, or lender and legal requirements materially change. Dataset limitations are set out on the methodology page.
Spotted something out of date or wrong? Email hello@mypropertyscan.com and we will correct it and change the update date.
Sources used
We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.
Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.
- Professional standard: RICS Home Survey StandardRICS standard for condition-based residential surveys in the UK.
- Learn more from: RICS consumer guide to surveysConsumer-facing guide to survey types and when each level is appropriate.
- Official guidance: GOV.UK buying or selling your homeGovernment overview of the home buying and selling process.
- RICS mortgage valuations
- RICS spray foam insulation guide
- Flood Re scheme overview
General information only. Not legal, mortgage, insurance, surveying, or financial advice. Lender and insurer criteria vary by provider, property, evidence, and timing. Confirm with your own broker, conveyancer, surveyor, and insurer before exchange. MyPropertyScan is operated by BiteRight Ltd.