The gap between an offer being accepted and contracts being exchanged can feel deceptively calm. You have found the place, pictured the sofa by the bay window and perhaps already measured the kitchen for a very optimistic breakfast bar. But this is exactly when a survey before exchange guide earns its keep. Before you commit to a legally binding purchase, you need a clear view of the property you are buying – not just its nicest angle on the listing.
A survey cannot make every old house perfect, nor should it talk you out of a sound purchase because of a few cracked tiles. Its job is to identify significant risks, explain what needs attention and give you evidence for sensible decisions. That might mean proceeding happily, renegotiating the price, asking for repairs or walking away from a problem that has politely disguised itself as “full of character”.
Why a survey should happen before exchange
In England and Wales, exchanging contracts is the point at which your purchase becomes legally binding. Pull out afterwards and you could lose your deposit and face further costs. A survey commissioned before exchange gives you the best chance to understand defects while you can still act on what you find.
The mortgage valuation is not a substitute. It is carried out for the lender’s benefit, often with limited inspection, and is primarily concerned with whether the property provides adequate security for the loan. It may flag a major concern, but it is not designed to tell you the state of the roof, the likely condition of concealed timber or whether that suspiciously fresh patch of paint is covering a persistent damp issue.
For buyers across South East London, this distinction matters. Victorian terraces, converted flats, 1930s semis and post-war homes can all carry their own predictable quirks. Local knowledge helps put those quirks in context, but a proper inspection is what turns a hunch into useful information.
Choose the survey that suits the property
The right report depends on the building, its age, apparent condition and your plans for it. Paying for a survey that is too light can leave questions unanswered. Paying for the most detailed option when it is not needed is not automatically wise either. The useful choice is the one that matches the risk.
RICS Level 2 Home Survey
A RICS Level 2 Home Survey is often suitable for a conventional property that appears to be in reasonable condition and has not been significantly altered. It provides a clear overview of the main elements, highlighting defects that need urgent attention or may affect the property’s value.
This is a sensible route for many buyers of a modern flat or a fairly standard house, provided there are no obvious warning signs. “Fairly standard” is doing some work there: a converted Victorian flat with visible cracking, an ageing roof and a question mark over the loft is not necessarily a straightforward proposition just because the estate agent describes it as charming.
RICS Level 3 Building Survey
A RICS Level 3 Building Survey is more detailed and is generally the better fit for older, larger, unusual or altered homes, as well as properties in visibly poor condition. It examines the construction and defects in greater depth, explains likely causes and sets out repair advice.
Consider it where you are buying a period property, planning substantial renovation, or have noticed signs of movement, damp, roof wear or previous extension work. It can also be valuable where your gut says something is off but you cannot yet put a finger on it. Gut instinct is not a technical qualification, but it can be an excellent prompt to ask better questions.
Book early, then give the surveyor the right context
Arrange the survey as soon as your offer is accepted and the sale is agreed. Waiting until the last week before exchange adds pressure to everyone involved and leaves less room to investigate findings, obtain quotes or renegotiate. Sales progression is already a group project with too many spreadsheets. Do not make the survey the late arrival.
When booking, share the property particulars, any information you have about alterations and your own concerns. Mention, for example, a damp smell, a bouncy floor, cracks around a rear extension, an old-looking consumer unit or a loft conversion you are unsure is properly documented. A surveyor will inspect independently, but your observations can help focus the conversation.
If you are planning works after completion, say so. Knocking through rooms, replacing a roof covering or adding an extension can change the level of investigation you need. A building that works perfectly well as it stands may become a much more complicated project once you start opening it up.
How to read a survey without panicking
The first read can be a little sobering. Most homes, especially older ones, have defects. A survey report is designed to be thorough, so it will not read like a love letter to your new hallway. The important question is not whether the report identifies issues. It is what those issues mean in cost, urgency and risk.
Start with the matters requiring urgent attention or further investigation. These commonly include signs of structural movement, roof defects, dampness, timber decay, unsafe electrics, drainage concerns and problems with chimneys or external walls. Then separate the findings into three practical groups: work needed immediately, work to budget for soon, and routine maintenance that comes with owning a home.
Pay close attention to recommendations for specialist inspection. A surveyor may advise an electrician, drainage contractor, roofing specialist or structural engineer to investigate a particular concern. This is not fence-sitting. Some defects cannot be fully confirmed without tests, access or specialist equipment beyond the scope of a visual building survey. Treat those recommendations as the next step, not a footnote to ignore.
Ask for clarity, not a crystal ball
A good survey should give clear insights, not hide behind jargon. If a finding is unclear, ask what is likely to happen if it is left unresolved, how quickly it needs attention and whether it changes the surveyor’s view of the purchase. At South Surveyors, post-survey guidance is part of making a report useful rather than simply informative.
Surveyors cannot normally provide fixed repair prices, and no inspection can see through every wall or beneath every floor. That limitation is normal. You can, however, use the report to obtain targeted estimates from suitable contractors and avoid asking for vague quotes based on “a bit of damp”. Precision tends to produce better pricing and fewer unpleasant plot twists.
Use the findings to make a measured decision
A serious defect does not automatically mean you should withdraw. It may be manageable if the price reflects the work, if you have the budget and appetite for it, and if the issue is properly understood. Equally, a property may be a poor fit even where the defect is repairable – not everyone wants their first year of ownership to involve scaffolding, dehumidifiers and a roof that has become a recurring character in family conversation.
If the survey uncovers material issues that were not apparent when you offered, speak to your solicitor and estate agent promptly. You may decide to seek a reduction, request that the seller addresses a specific matter, or revise your offer to reflect credible repair costs. Keep the discussion factual. Refer to the report, any specialist findings and written estimates rather than making broad claims about the house being “basically falling down”.
Be cautious about asking a seller to arrange complex repairs before completion. Work completed quickly to save a sale is not always work completed well. In some cases, a price adjustment and control over the repairs after completion is the cleaner option. It depends on the nature of the defect, your timetable and whether you can afford to take on the work.
Do not exchange until key questions are answered
Before exchange, make sure serious survey findings have been investigated where necessary, the financial impact is understood and your lender is informed if an issue may affect the mortgage. Your solicitor should also be progressing the legal enquiries that sit alongside the survey, such as planning permissions, building regulations approvals, guarantees, lease terms and management information for flats.
The survey and conveyancing process answer different questions. One considers condition; the other considers legal title and documentation. You need both. A sound-looking extension without the right paperwork can still create a problem, while immaculate certificates do not prove the roof is watertight.
Allow enough time for your final viewing too. Check that the property is in the expected condition, agreed fixtures remain and no new damage has appeared. It is not glamorous, but neither is discovering after completion that the garden shed has departed while the broken freezer has stayed behind.
Buying a home always involves some uncertainty. The aim is not perfection, particularly with London’s older housing stock. It is to exchange with your eyes open, a realistic budget and a plan for what comes next – which is a much better foundation than crossed fingers.
