Selling a property with a history of subsidence, whether a settled insurance claim, a successful past repair, or a documented monitoring period that confirmed no further action, is one of those situations where a small investment in independent professional evidence at the start protects you across months of negotiation. Buyers and their lenders are looking for certainty: that the cause has been identified, that the repair (if any) was properly executed, and that the building is currently stable. A complete evidence pack delivers that certainty and is the single biggest factor in how the sale concludes.
The TA6 disclosure obligation
UK conveyancing requires you to complete a TA6 Property Information Form. Section 7 specifically asks whether the property has been affected by subsidence, heave or landslip; whether you are aware of any ongoing issues; and whether any claim has been made. The honest answer is the legally safe answer. Non-disclosure can void the sale, lead to a damages claim against you after completion, and (in extreme cases) be treated as misrepresentation. Treat the TA6 as the start of the narrative, not a problem to manage around.
The evidence pack that wins the sale
The pack we recommend assembling before going to market:
- Engineer's report or surveyor's report from the original investigation, with the diagnosis and recommended action.
- Insurance correspondence if a claim was made, the acceptance letter, the schedule of works approved, and the claim settlement.
- Contractor's invoice and method statement for any remedial works completed.
- Certificate of Structural Adequacy from a chartered engineer on completion of the works (insurers issue this on claim-funded work; we issue it on private commissions).
- Post-repair monitoring data covering at least one full season after completion of the works, confirming the property is now stable.
- Insurance renewal history showing continued cover on the property.
- Optionally: an updated independent pre-sale survey confirming the property's current condition, dated within twelve months of marketing.
The independent pre-sale survey
For properties with any history of movement, an independent pre-sale survey priced into the marketing budget pays for itself many times over. It allows the agent to lead with certainty rather than caveat. It flushes out any issues that would otherwise emerge in the buyer's survey, giving you time to address them on your terms rather than under the pressure of a buyer threatening to withdraw. And because the surveyor has no commercial interest in the sale or in any subsequent repair, the report carries credibility with the buyer's solicitor that the seller's own paperwork cannot match.
Price impact and what to budget
Major UK lender data and surveyor surveys suggest a documented, stabilised property typically trades at a discount of 5–10% to comparable properties without a claim history. That gap widens dramatically, to 15–25% or more, for properties with an unresolved or undocumented history. The cost of an independent evidence pack and pre-sale survey is, against the price gap it closes, straightforward arithmetic.
Choosing the right agent and solicitor
Not every estate agent in your town has genuine experience selling repaired-subsidence properties, and the difference matters. The right agent has handled the documentation before, has a stable of buyers and brokers who are comfortable with this kind of stock, and knows which local lenders will lend on a previously-claimed property. The wrong agent will over-promise on price, panic at the first survey query, or quietly drop the property to the bottom of their list. References from past sellers in a similar situation are worth more than headline fee comparisons.
The same applies to your conveyancing solicitor. A solicitor who has handled repaired-subsidence sales before will know how to present the evidence pack to the buyer's side proactively, will anticipate the underwriter's questions, and will not panic when the mortgage valuer raises subsidence as a flag.
Handling the buyer's homebuyer / Level 2 survey
Be ready for the buyer's surveyor to flag historic cracking. The right response is not defensiveness, it is documentation. Your evidence pack, including any post-repair monitoring data, is what closes that conversation cleanly. The wrong response is to fill historic cracks and repaint just before viewings, which surveyors notice immediately and which damages buyer trust at the worst possible moment.
Timeline expectations
A subsidence-aware sale typically takes a few weeks longer to exchange than a comparable straightforward sale, mainly because mortgage valuers and underwriters need to satisfy themselves on the repair history. Build that into your moving timeline. Keep the documentation pack available to share at the first request. Resist any temptation to chase a fast offer that quietly assumes the property has no history.
If you have no documentation from a historical claim
This is more common than you might think. Insurers often retain claim files for only six to twelve years after closure. If you are aware that a claim was made but have no paperwork, your first step is a written Subject Access Request to the insurer concerned. The second step is to commission an independent pre-sale survey that records the property's current condition and confirms its present stability, this becomes the substitute evidence pack, and is far better than relying on a vague TA6 disclosure with no supporting documentation.
Send us your details and any existing paperwork , we will quote the right pre-sale survey for your situation and timeline.
What to do about the cracks themselves before marketing
Historic, stable, fully-documented cracks are part of the property's story. Cosmetic over-treatment immediately before marketing is almost always counterproductive. Buyers' surveyors notice fresh filler and paint and they read it as concealment, not maintenance. The sequence we recommend is: complete any outstanding diagnostic work first, address any genuine cause- removal (drain repair, root management) on its own technical timetable, allow the property to demonstrate stability through at least one further season, and only then carry out cosmetic making-good of any historic damage. Document each stage. The evidence pack is the asset; the redecoration is the finishing touch.
Energy Performance Certificate and other survey concerns
A subsidence-aware sale also tends to attract sharper scrutiny of other property condition issues that would otherwise pass without much comment, damp readings, roof condition, electrical and gas certificates, EPC banding. The buyer's surveyor's report will read the property as a whole, and any other significant defect will be picked up alongside the subsidence question. A well-presented sale gets ahead of this by commissioning a general condition review alongside the subsidence-specific evidence pack, and addressing anything else minor that emerges before going to market. The cumulative effect on the asking price is meaningfully positive.
What "going to market with confidence" actually looks like
The strongest position to sell a previously-affected property from is one where the agent can hand the buyer an evidence pack at first viewing and answer every reasonable question in the first conversation. The pack and the survey, together, protect the asking price, shorten the time to exchange, reduce the volume of last-minute survey queries, and minimise the chances of a buyer dropping out late in the process. The cost of assembling that pack is normally absorbed inside the first few thousand pounds of price you would have lost without it.