If you are selling your home and your buyer has booked a survey, it is easy to think that preparing for it means tidying up, clearing access to the loft and making sure the surveyor can get into every room.
Those things can help, but they are not the most important preparation you can make. Ideally, preparing for a buyer’s survey should start before your property even goes on the market.
The reason is simple. A survey does not just have the potential to find defects. It can introduce uncertainty about them. If a surveyor identifies cracking, dampness, movement, a roof defect or something else they cannot fully explain within the scope of their inspection, they may recommend further investigation by somebody else. That recommendation may be perfectly reasonable, but it arrives after you have found a buyer, agreed a price and started a transaction.
Understanding significant issues earlier gives you considerably more control over what happens next.
Look at Your Property Before Somebody Else Does
Most of us become accustomed to the condition of our own homes. The crack that has been beside the window for years becomes part of the room. The old stain beneath the bathroom stops attracting attention. A slipped roof tile, overflowing gutter or patch of deteriorating brickwork can remain unnoticed simply because we do not normally walk around our homes looking for defects.
That is why it is worth taking a critical look at the property before marketing it.
The purpose is not to turn yourself into a surveyor or diagnose building defects. It is to identify things that may deserve further consideration while you still have time to do something about them.
Some matters will be straightforward. Others may already have an explanation. If there was once a leak beneath the bathroom, for example, you may know that the leak was repaired but the old staining was never redecorated. If an extension has been built, you may already have the relevant approvals and guarantees. Finding that information before the buyer’s survey can prevent an unanswered question becoming an unnecessary concern.
Our guide to checking your property’s condition before selling explains why looking at condition before marketing can put sellers in a better position.
Other matters need more thought. Cracking is a good example.
What Should I Do About Cracks Before Selling My House?
Cracks are particularly relevant because their appearance alone does not always tell you why they are there.
Buildings move for many reasons. Materials expand and contract, components can fail, alterations can change the way loads are transferred and foundations can be affected by changes within the ground. Trees, variations in soil moisture and defective drainage can also play a part. It is therefore unwise to assume that cracking must be subsidence, just as it is unwise to assume that it cannot be significant because a property is not thought to sit on a particular type of clay.
If you notice potentially significant or unexplained cracking before selling, the important question is not whether you can make it less visible. It is whether the cause should be better understood.
Our guide to cracks after hot, dry weather and subsidence looks at this issue in more detail.
This matters because the buyer’s residential surveyor may not be the person who ultimately answers that question. RICS itself recognises that surveyors may recommend further investigation where something cannot be fully assessed during their inspection or where specialist knowledge is required.
That is not a criticism of the industry. A residential survey has a defined scope, inspection and fee. The problem for a seller is what happens to the transaction when a buyer receives a report describing cracking, possible causes and a recommendation to obtain another professional opinion.
The buyer may understandably become worried. They may seek another inspection, delay the transaction, renegotiate their offer or reconsider the purchase altogether.
Where cracking genuinely warrants specialist structural investigation, obtaining advice from a suitably qualified structural engineer with relevant experience before marketing can put the seller in a very different position. If the conclusion is reassuring, the seller has something meaningful to provide to the agent, buyer and buyer’s surveyor rather than asking them to make decisions in an information vacuum.
The buyer’s surveyor remains entitled to reach their own opinion and may still recommend further investigation. A previous engineer’s report does not guarantee otherwise. But there is an important difference between unexplained cracking and cracking that has already been properly investigated, documented and, where necessary, repaired or monitored.
What if the Crack Turns Out to Be Serious?
This is where discovering something early becomes even more valuable.
If an investigation identifies active movement, significant structural problems or the need for monitoring, that may not be the answer an owner hoped for. But discovering it before marketing provides choices that may no longer be as easy once a transaction is underway.
The owner can take appropriate professional advice, investigate the cause, consider repairs, gather evidence, allow monitoring to take place or decide to delay marketing until the position is clearer. If the property is still sold with an unresolved issue, that can be approached knowingly and with appropriate legal and professional advice.
Compare that with discovering the same problem after accepting an offer. By then both sides may have spent money and made plans around the move. The seller may have found their next home, started their own purchase and allowed themselves to believe that is where they are going to live.
If the sale then has to pause while cracking is investigated, drains are inspected or movement is monitored, the consequences are no longer just technical or financial. The seller may face the disappointment of losing the property they hoped to buy while simultaneously having to deal with an unexpected problem at the home they are trying to sell.
That does not necessarily mean the onward move will never happen. Once the issue has been properly investigated, understood and, where necessary, dealt with, the owner may be in a much stronger position to sell and move at a later date. The benefit of finding the problem earlier is that much of that work can take place calmly, before a buyer and an onward purchase are depending on the outcome.
The physical defect has not changed. What has changed is the amount of pressure surrounding it.
This is one of the strongest reasons for understanding property condition earlier in the sales process. Finding a problem does not make a transaction fail. Finding an unexplained problem at the wrong moment can make completing that transaction considerably harder.
Our guide to what happens after a bad house survey explains what buyers and sellers may face when significant issues are first raised later in the transaction.
What if the Cracking Could Be Subsidence?
Where cracking could reasonably indicate subsidence, heave or landslip, there is another consideration before commissioning investigations: your buildings insurance.
Most buildings insurance policies provide some cover for damage caused by subsidence, heave and landslip, although the precise cover, exclusions and excess vary between policies. The Association of British Insurers advises homeowners who suspect subsidence to contact their insurer as soon as possible. The insurer may then arrange for an appropriate specialist or engineer to investigate.
This is important because not every crack is an insured event. Cracking can result from causes including ordinary movement, defective components, alterations, poor workmanship and other construction issues. A failed lintel, for example, is not automatically an insurance claim simply because it has caused cracking.
If there is a reasonable possibility that ground movement falls within your buildings insurance, check the policy and speak to the insurer before committing to significant investigation costs yourself. Ask what investigation they want undertaken and whether any privately commissioned professional costs would be covered.
Subsidence investigations can also take time. Depending on the circumstances, determining whether movement is active can involve crack monitoring, drainage investigations, trial holes, soil analysis and other specialist work. Where monitoring is necessary, there may simply be no immediate answer.
Where drainage forms part of the investigation, our guide to when you need a CCTV drainage survey explains why buried drainage may require specialist investigation rather than visual inspection alone.
That can be inconvenient if you want to sell, but it is better to understand that position before building a transaction around the property.
Should I Tell a Buyer About Problems With My House?
This is an area where sellers should be careful about simplistic advice.
The principle of caveat emptor, or buyer beware, remains relevant to residential property transactions in England and Wales. A seller is not automatically giving the buyer a warranty that every part of the property is defect-free, and sellers are not expected to possess technical knowledge they do not have.
That does not mean a seller is free to provide information they know to be false or misleading.
The Law Society’s Property Information Form guidance explains that sellers should answer questions truthfully, completely and as accurately as they can from their own knowledge. Buyers can rely upon information supplied during the transaction and inaccurate or misleading answers can have consequences after completion.
This distinction matters. There is a considerable difference between genuinely not knowing the cause of something and giving a definitive answer that you do not have reasonable grounds to believe is true.
There have been some expensive examples of what can happen when that distinction is ignored.
What Can Happen if a Seller Gives Misleading Information?
In Patarkatsishvili v Woodward-Fisher, decided by the High Court in 2025, the buyers of a London property discovered a serious moth infestation after purchasing it. The seller had previously received pest-control information relating to the infestation, but replies given during the conveyancing process did not accurately reflect what was known.
The court found that three replies to pre-contract enquiries were false and that the seller did not honestly believe them to be true. Importantly, the fact that the buyers had visited the property several times without identifying the infestation did not make the inaccurate information given by the seller irrelevant. The consequences were substantial, with the court permitting rescission of the sale subject to the terms set out in the judgment.
Japanese knotweed has produced another useful example. In Downing v Henderson, a seller had answered “No” when asked on the Property Information Form whether the property was affected by Japanese knotweed. Knotweed was subsequently discovered after the purchase and the buyer successfully pursued a claim for misrepresentation.
These cases should not be interpreted as meaning that sellers must diagnose every defect in their homes or provide buyers with an exhaustive schedule of everything that has ever gone wrong. They demonstrate something much more straightforward: employing a surveyor does not give the buyer sole responsibility for discovering information that the seller has been specifically asked about, and buyer beware is not permission to give an answer that is known to be misleading.
Trying to conceal a significant known problem is therefore a very different proposition from simply being unaware that a defect exists.
What Should I Do When the Buyer’s Surveyor Actually Comes?
If the survey has already been booked, practical preparation still helps. Provide reasonable access to areas the surveyor is likely to inspect, including the loft where possible, and avoid deliberately obstructing visible parts of the property. If you have useful documentation relating to alterations, significant repairs, investigations or known historic issues, have it available.
There is no need to follow the surveyor around the house or attempt to persuade them that something is insignificant. If a material issue has already been professionally investigated, the report and supporting evidence are likely to be more useful than an owner’s reassurance that something has “always been like that”.
Similarly, there is little value in undertaking last-minute cosmetic work simply to make a defect less obvious. A fresh coat of paint does not establish why staining occurred, and filling an unexplained crack does not establish why the building moved.
Where something warrants an explanation, evidence is considerably more useful than cosmetics.
Do I Need to Fix Everything Before a Survey?
No.
An older property does not need to become a new one simply because it is being sold. Buildings require maintenance, and buyers should expect age, wear and previous repairs to form part of owning a home.
The purpose of looking at condition before marketing is not to produce a perfect house. It is to distinguish ordinary maintenance from matters that could become disproportionately disruptive if first raised halfway through a transaction.
A dripping gutter and suspected structural movement are clearly not equivalent. Nor are a loose door handle and an unresolved drainage problem.
The sensible response should be proportionate to the issue.
Why Does Survey Shack Encourage Owners to Do This Earlier?
Survey Shack was built around a simple problem with the way property condition is often considered during a sale.
Too much can remain unknown until a buyer is already committed to the transaction.
Our guided condition assessment helps owners work through their property systematically, consider things they might otherwise overlook and record what they know about its condition. It is not intended to turn homeowners into surveyors, nor does it replace a structural engineer, electrician, drainage specialist or any other professional where their expertise is required.
Its value comes earlier.
If an assessment highlights something that deserves clarification, the owner has an opportunity to investigate it before marketing. If there is documentation relating to an existing issue, it can be found. If maintenance is needed, it can be considered. If specialist advice is warranted, it can be obtained from the person actually qualified to answer the question.
Sometimes the answer will be reassuring. Sometimes it will identify something that needs dealing with. Either outcome gives the owner something they did not have before: time to make an informed decision without an agent, buyer, buyer’s surveyor and onward chain already waiting for an answer.
A buyer should still be free to commission their own survey and obtain independent advice. Earlier seller information does not remove that protection. It simply means that the buyer’s survey need not be the first time anybody has seriously considered the condition of the property being sold.
That is why the best preparation for a buyer’s survey does not begin on the morning the surveyor arrives. It begins with understanding the property before it goes on the market.
