How to Respond to the Buyer's Survey on a Leasehold Flat

The Survey Is Often the Sale's Biggest Test

The buyer's survey is one of the moments in a leasehold flat sale where things can wobble. The price is agreed, the solicitors are working, the paperwork is moving, and then a written report lands on the buyer's desk that says something they were not expecting. Sometimes that report changes nothing. Often it produces a renegotiation conversation a few days later, and occasionally it ends the sale.

Most surveys produce one of four outcomes:

Silence (the report turned up nothing worth raising).
Queries through the buyer's solicitor (some points are passed to the conveyancers as enquiries).
A renegotiation request (a price reduction, a retention from the completion monies against specific outstanding works or a request that work be done before exchange).
Withdrawal (less often, but it does happen).

The point of this guide is to walk through each of those outcomes with a clear head, so the seller can tell the difference between a buyer reacting to a real new finding and a buyer trying their luck.

This guide covers the practical decisions a flat seller faces in the days and weeks after a buyer commissions a survey: which surveys are which, what surveyors typically flag on a flat, how the report reaches the seller's side, the four ways a buyer might respond, how to evaluate a price-reduction request properly, the leasehold issues that are not yours to fix and the moments to hold firm rather than chip away at the price.

How to respond to the buyer's survey on a leasehold flat: what surveyors flag, how renegotiation unfolds and when to hold firm

The Four Reports a Buyer Might Commission

"Survey" is used loosely to cover several different things, and they do not all give the buyer the same kind of information. Knowing which one your buyer has paid for changes how seriously to take whatever they raise next, and how much of it is actually news.

1. The lender's mortgage valuation

The mortgage valuation is commissioned by the buyer's lender, not by the buyer, and its job is narrow: confirm the flat is worth at least the amount being lent. The form varies: a physical inspection inside the flat, a drive-by external inspection or a desktop exercise relying on portal data and recent comparables. The lender decides which, based on the loan's risk profile, the property and the borrower's circumstances. For leasehold flats and higher-LTV (loan-to-value, the percentage of the property's value being borrowed) mortgages, a physical inspection is still common because the valuer needs to see the flat itself, the condition of the communal areas and any visible building safety considerations. The report goes to the lender, and the buyer typically only sees a brief summary. This is not a survey of the flat's condition.

The lender's view of value carries more weight than the buyer's, the seller's or the agent's, because the lender will only release mortgage funds against its own figure. The buyer may genuinely believe the flat is worth the agreed price; the seller and the agent will usually agree. None of that matters if the lender's valuer arrives at a different number. If the valuation comes back lower than the agreed price (a "down-valuation"), the buyer is left to either make up the shortfall in cash, ask the lender to reconsider, look for a different lender or ask the seller to drop the price. A down-valuation is therefore a different conversation about the lender's view of value rather than a survey of the building's condition.

2. RICS Home Survey Level 1 (Condition Report)

The Level 1 survey is the lightest of the three RICS surveys (the Royal Institution of Chartered Surveyors, the professional body that sets the standard formats). It uses a traffic-light system (green, amber, red) to flag the condition of the main parts of the property, with no advice on repairs or valuation. Level 1 is rarely commissioned on a flat, because a flat involves enough leasehold and building-fabric questions that most buyers want more detail. If your buyer has commissioned a Level 1 survey, expect short, factual flags rather than detailed analysis.

3. RICS Home Survey Level 2 (formerly the HomeBuyer Report)

Level 2 is the typical choice for a flat in reasonable condition. It covers the main parts of the property visible on inspection, picks up condition issues, comments on damp, ventilation, the condition of the windows and the visible parts of the building from inside the flat. It does not lift floorboards or look behind fixed panelling, and it does not test services. A Level 2 report can include a market valuation if the buyer pays for that option, though many do not.

4. RICS Home Survey Level 3 (formerly the Building Survey)

Level 3 is the most thorough survey and is the right choice for older flats, conversions, properties needing work or buildings with known issues. The surveyor inspects more carefully, looks for hidden defects where they can do so safely and produces longer commentary on cause, consequence and the kind of repair that may be needed. A buyer who has commissioned a Level 3 survey is usually serious, and is also more likely to come back with a longer list of points to discuss.

One inspection, two reports: the combined option

Many lenders allow the buyer to upgrade the lender's valuation visit into a single combined appointment, with the same RICS surveyor producing two separate reports: the mortgage valuation for the lender, and a Level 2 or Level 3 survey for the buyer. The buyer pays for the upgrade and saves the cost and disruption of a second inspection visit. The two reports stay distinct in scope and audience (one for the lender, one for the buyer), but for the seller it looks like a single survey visit. Worth knowing if the agent mentions only "a survey" coming up: it may be the lender's valuation, the buyer's RICS survey or both rolled into one appointment.

For many buyers, a separate RICS survey is considered good value for money. A Level 2 or Level 3 survey typically costs between £400 and £900 on a flat, and surveyors almost always come back with at least some findings worth raising. The fee is small set against a price renegotiation that may run into thousands. A buyer who has paid for their own survey is rarely doing so only for peace of mind. The report also serves as the written grounds for any renegotiation conversation that follows.

In practice, plenty of flat buyers do not commission a separate RICS survey at all. Many mortgage buyers rely on the lender's valuation alone, especially when funds are tight or the flat is modern and clearly in good order. Cash buyers may rely on their own walk-through and their solicitor's review of the lease and management pack. Either route is the buyer's choice; a seller cannot insist a separate RICS survey is or is not commissioned, and there is no rule about it.

What Surveyors Typically Flag on a Leasehold Flat

Flats produce a fairly predictable range of survey findings, and the same handful of items come up on most reports. Knowing what those are makes it easier to read whatever the buyer comes back with, and to tell the difference between a normal observation and something that warrants a real conversation about price.

Damp, condensation and water staining

The single most common finding on a flat. Surveyors are trained to record any sign of moisture, and a small reading on a damp meter or a faint stain near a window is usually enough to put a comment in the report. Most of these findings are condensation rather than rising or penetrating damp, and they often reflect ventilation rather than a building defect. A flat with single-glazed sash windows and a bathroom without an extractor will tend to produce damp readings on a survey almost regardless of how well it is being looked after. Genuine penetrating damp from a leaking roof, a failed parapet or a flat above is a different conversation.

Evidence of past leaks from the flat above

Common in older blocks. A faint stain on the ceiling near a bathroom or kitchen above is often noted by the surveyor even where the leak was resolved years ago. Sellers can usually confirm whether a leak has been repaired and whether the building's insurance was used. A clear written summary of when the leak happened, what was done and that the matter is closed will normally satisfy the buyer's solicitor's enquiry.

Windows, balconies and external joinery

Window frames, sills and any balconies tend to attract surveyor commentary, particularly on Victorian or Edwardian conversions. The flat owner is usually responsible for the inside of the windows and (depending on the lease) sometimes the outside; the building structure itself is the freeholder's responsibility. Whether a comment about windows produces a renegotiation depends on the lease wording.

Electrics, gas and EPC

Surveyors will note the age and visible condition of the consumer unit and whether visible wiring looks recent. If there are concerns, they may recommend an Electrical Installation Condition Report (EICR) from a qualified electrician, but they do not carry out electrical testing themselves. For gas, they will note the boiler's age and visible condition; they do not test the gas system. The Energy Performance Certificate (EPC) is a separate document, valid for 10 years, that the seller is legally required to make available before listing, and a surveyor may note its rating. Existing certificates such as an EICR or a gas safety certificate are typically picked up through the buyer's solicitor's enquiries rather than the survey, and neither is a legal requirement on a sale of an owner-occupied flat.

Communal areas and external fabric

The roof, the external walls, the entrance lobby, the staircase, the lifts, the bin store, the parking area: the surveyor will comment on the parts of the building they can see from outside or in the communal areas. None of this is the seller's responsibility to fix; it sits with the freeholder or the right-to-manage company, paid for through the service charge. Comments about the state of the communal areas may inform the buyer's view of the flat as an investment, but they do not typically translate into a sensible price reduction against the seller.

EWS1 and building safety

For buildings of 11 metres or more, the buyer's lender will usually want to see an EWS1 form (the External Wall System form, used by lenders to confirm the cladding and external wall position). Buildings between 11 and 18 metres sit in a grey zone where lender requirements vary and an EWS1 may or may not be needed. The EWS1 is produced by the freeholder or managing agent, not the seller. A surveyor flagging "EWS1 required" is identifying a building-level question, not a flat-level defect.

Why the lease itself sits outside the surveyor's job

The lease, the ground rent clauses and the service charge accounts are not really the surveyor's territory. They are reviewed in detail by the buyer's conveyancing solicitor, working from the lease, the LPE1 management pack and the freeholder's responses to legal enquiries. A RICS surveyor on a Level 2 or Level 3 report with a valuation element will sometimes note the headline lease length and ground rent because they affect value, but the substantive reading of the lease wording is a conveyancing matter, not a survey one. The lender's own valuer (a separate appointment from the buyer's surveyor) is more likely to flag lease length formally, because mortgage criteria depend on the unexpired term. Most renegotiation requests that turn on the lease itself come back through the buyer's solicitor or the lender's mortgage valuation, rather than the buyer's chosen surveyor.

Survey Timing, and How the Seller Hears About It

One of the small frustrations of the survey stage is that almost everything happens on the buyer's side, and the seller is largely waiting. Where the buyer has commissioned a separate RICS Home Survey on top of the lender's valuation, a typical sequence runs as follows.

The buyer instructs a surveyor, usually one to two weeks after the offer is accepted, often once the mortgage application is in motion.
The surveyor contacts the estate agent to arrange access to the flat, normally within the following week.
The inspection itself takes one to three hours depending on the level of survey and the size and condition of the flat.
The written report is delivered to the buyer five to ten working days after the inspection, sometimes a little longer for a Level 3 survey.
The buyer reads the report, often in conversation with their solicitor or mortgage broker.
If the buyer has questions or concerns, the agent or the buyer's solicitor passes them to the seller's side. This is normally within a few days of the buyer receiving the report.

Where the only inspection is the lender's mortgage valuation, the timeline runs in parallel but the seller hears nothing directly. The valuer attends the flat or carries out a desktop check, reports to the lender, and the lender either issues a formal mortgage offer or asks the buyer for further information. The seller usually only learns about the result if the valuation flags an issue: a request for a specialist report, a request for a follow-up inspection or a down-valuation that leaves the buyer short of funds.

The total elapsed time from offer to a "what does this mean?" phone call is typically three to five weeks, though it can be quicker on a cash sale and slower where the surveyor is busy or the buyer is taking their time.

The seller's window of involvement during all this is narrow. The agent will arrange access for the inspection itself. After that, the seller waits. A surveyor on site will sometimes ask the seller about practical points (where the stopcock is, when the boiler was last serviced, whether the windows have been replaced), but the conversation is usually brief and does not produce immediate feedback. The first real news the seller hears about the report is usually the agent's call after the buyer has read it.

The Four Ways a Buyer Responds After the Survey

Once the buyer or their mortgage lender has the report, the response usually falls into one of four categories. None of them are rare, and the difference between them often comes down to the nature of what the surveyor has actually found.

1. Silence

The most welcome outcome, and more common than sellers tend to expect. The surveyor's findings are minor or routine, the buyer is satisfied, and the conveyancing simply continues without a separate conversation. A short period of quiet from the buyer's side after the survey window is a good sign rather than a worrying one. If the agent has heard nothing within ten days of the inspection, a low-key "any questions arising?" check-in with the buyer's side is reasonable, but no news is usually good news.

2. Queries through the buyer's solicitor

The next most common outcome. The buyer has read the report, identified a handful of points they want clarified and asked their solicitor to raise them as enquiries on the contract. The questions land on the seller's solicitor's desk in writing, alongside the standard enquiries that any leasehold sale produces. The seller answers them through their solicitor, and the sale moves on. There is no price conversation in this category; the buyer is happy with the deal but wants the lawyers to tighten a few details before exchange.

3. A renegotiation request

The conversation most sellers worry about. The buyer has read the report and is asking for one of three things: a price reduction (the headline price comes down and the contract is amended), a retention from the completion monies against specific outstanding works (the headline price stays the same but the buyer's solicitor holds back an agreed sum pending a defined condition) or a request that specific work be done before exchange. The trigger can be a real new finding, a known issue the buyer wants to revisit or, occasionally, opportunism. How to evaluate this properly is the subject of the next section.

4. Withdrawal

The least common outcome, but it does happen. A buyer who pulls out after the survey is usually reacting to something the report has uncovered that they were not previously aware of: significant structural issues, evidence of active water ingress, a serious damp problem or signs of a substantial building repair on the way. Some lenders will also withdraw an offer at this point if their criteria are not met. A withdrawal at survey stage is painful, but the buyer is rarely the only person who would have raised the issue. If the underlying point is genuine, a different buyer is likely to find the same thing and react in the same way.

How to Evaluate a Price-Reduction Request

Renegotiation is best handled slowly. Most sellers' first instinct on hearing "the buyer wants £X off" is to either dig in or fold quickly, and neither is usually the right answer. A short, considered evaluation tends to produce a better outcome than a fast one, even though the agent may be keen to settle the matter the same day.

Ask for the request in writing, with the supporting evidence

The first step is to slow the conversation down by asking for the request in written form. That usually means an email from the agent or a letter from the buyer's solicitor, naming the specific findings the buyer is responding to and, where a separate buyer's survey report exists, attaching the relevant pages. A written request changes the nature of the conversation: it forces the buyer to articulate exactly what they want and why, and it gives the seller time to think rather than respond on a phone call.

Match the figure to the evidence, not to the asking price

A request for "£10,000 off because of damp" is not the same as a request for "£1,200 off, supported by a quote from a damp specialist for replastering and ventilation works". Where remedial work is the issue, the buyer should be able to support the figure with at least one written quote from a qualified contractor. Where the issue is something the seller does not own (cladding, lifts, communal entry systems), the buyer's request should not be against the seller's price at all; those costs sit with the freeholder and are funded through service charge or major-works levies.

Genuine new finding, or arbitrary price chipping?

Most surveys come back with something. The useful question is whether the buyer is reacting to a real new finding or working through a list of normal observations to justify chipping the price. Genuine new findings tend to be specific and the kind of thing that would catch any buyer's surveyor: significant structural cracks, evidence of subsidence, active water ingress, a roof clearly at the end of its life. Nitpicking, by contrast, tends to be a list of cosmetic or age-related items dressed up as serious: minor condensation around an old window, a worn carpet, hairline cracks in plaster that have been there for decades. These are normal for almost any flat and should have been factored into the original offer.

Occasionally a buyer or agent will stretch a passing surveyor comment into a major problem. "The boiler is towards the end of its expected life" is not the same as "the boiler needs replacing now". Reading the actual report wording (rather than relying on the buyer's verbal summary) tends to catch these cases quickly. New information can justify a fresh look at the price; familiar information, normal wear and tear and stretched interpretations rarely can.

The two routes: price reduction and retention

When the buyer is asking for money off, there are two clean routes in UK conveyancing, and they are not the same thing. A price reduction is the standard answer for a genuine survey finding. The Memorandum of Sale is updated, the contract is amended and the headline price is formally lowered. Both solicitors record the new figure, and the buyer's lender is told. If the change is significant enough to alter the loan-to-value ratio, the case can go back through the lender's underwriter, which sometimes adds a few days to the timetable. The advantage of a price reduction is that the new figure is on the record and there is no later argument about what was agreed.

A retention is a different mechanism, useful where there is a specific outstanding matter that can be cleared in a defined window. The headline price stays the same, the sale completes on the original figure, but the buyer's solicitor holds back an agreed sum from the completion monies in their client account pending a specific condition: agreed remedial works completed, a defective certificate produced, an outstanding planning matter resolved. Once the condition is met, the retention is released to the seller. A retention is a temporary holdback against a defined event, not a permanent reduction in the price.

One thing to avoid is an undeclared "allowance": a side arrangement where the seller agrees to take less than the contract price on completion without telling the buyer's lender. The UK Finance Mortgage Lenders' Handbook (the standard set of conveyancing instructions issued by lenders, formerly the Council of Mortgage Lenders' Handbook) requires the conveyancer to disclose any incentives, allowances or price changes to the lender. An undisclosed reduction on a mortgaged sale can be treated as mortgage fraud. Where a lender is involved, the formal price reduction route, recorded properly between the two solicitors and the lender, is the right answer. On a cash sale the rules are simpler because there is no lender to tell.

Take a moment to compare against the alternative

Before agreeing or refusing, the seller's question is a simple one: if this buyer walks, what is the realistic relisting position? The answer depends on how the issue would look the second time around. If a different buyer's surveyor is likely to find the same damp, the lender to raise the same EWS1 question and the solicitor to surface the same ground rent clause, then declining the reduction may simply mean spending another six weeks on the market and finishing in a similar place. If the issue is something this particular buyer has fixated on but a different buyer probably won't fuss about, then holding firm is more defensible.

The Issues That Are Not the Seller's to Fix

This is the single most useful distinction at the survey stage on a flat: what sits inside the seller's demise (the area the lease says they own and are responsible for), and what sits outside it. The line is drawn in the lease itself, which the buyer's solicitor will have obtained from HM Land Registry as part of the contract pack, so anything raised here can usually be answered with reference to a specific clause.

Inside the demise: the seller's responsibility

The standard pattern, though it varies, is that the leaseholder is responsible for the internal surfaces of walls, floors and ceilings, the kitchen and bathroom fittings, internal doors, internal decoration, plumbing within the flat, the consumer unit and electrics within the flat and (depending on the lease) the inside or both sides of the windows. Anything in this list that the surveyor flags as defective is genuinely the seller's matter to address or to factor into the price.

Outside the demise: the freeholder's responsibility

Everything that is shared with other flats or that sits structurally outside the demise is the freeholder's responsibility, paid for through the service charge. That covers the roof, external walls, structural elements, communal areas, the entrance lobby and corridors, lifts, communal lighting and heating systems, the parking area and bin store, fire doors on landings, fire alarm and detection systems in communal spaces, cladding and external wall systems and the building's insurance. Surveyors often comment on the condition of these items, but the seller cannot fix them, cannot commission the work and is not the right person against whom the buyer should be discounting the price.

Cladding and external wall systems are a special case. Under the Building Safety Act 2022, remediation in qualifying buildings is now usually funded by the original developer or the Government's Cladding Safety Scheme rather than through the service charge, with significant leaseholder protections. The cladding picture is covered in more detail in the FAQ below.

The grey areas (worth checking in the lease)

Two parts of the building cause the most argument: windows and balconies. Some leases say the leaseholder owns the inside of the windows only; some say both sides; some say the freeholder owns the whole window and passes the cost on through the service charge; some give the leaseholder responsibility for repair but not for replacement. Balconies follow a similar pattern. If the surveyor has flagged windows or balconies and the buyer is asking for a discount, the right first step is to read the relevant clauses of the lease before responding.

The Section 20 question

If the building is heading into a major works programme, the freeholder is required by Section 20 of the Landlord and Tenant Act 1985 to consult leaseholders before incurring costs above £250 per leaseholder for works, or £100 per leaseholder per year for long-term agreements. Section 20 notices and the resulting cost share come back through the LPE1 management pack and the buyer's solicitor will normally already have them. The conversation about major works is therefore a conveyancing conversation rather than a survey one, although a surveyor on a Level 3 inspection may also note that parts of the building look due for work. Either way, an upcoming Section 20 levy is a service-charge cost that the buyer will have to pay after completion, not a price reduction the seller should fund. The conventional answer is that the costs follow ownership and are factored into the buyer's view of value at offer stage, not absorbed by the seller at survey stage. That principle holds in most cases, but the conversation is sometimes more nuanced.

A buyer may genuinely not have anticipated the works, particularly if the Section 20 notice was not yet in the LPE1 management pack at offer stage. For first-time buyers, the concept of major works funded by a leaseholder levy can be a surprise in itself, and the bigger worry is sometimes the implication: if substantial works are coming up now, similar bills may come up again later. That broader concern can put inexperienced buyers off the flat altogether and is harder to talk down than the immediate cost. A sensible seller weighs the principle against the practical reality and decides whether to hold firm, share part of the levy as a goodwill gesture or absorb the cost in full.

One exception: Section 20 covers works funded through the service charge, including any reserve or sinking fund built up over the years. Cladding remediation under the Building Safety Act 2022 is usually funded by the developer or a Government scheme rather than the service charge, and follows different rules. See the cladding FAQ below for that picture.

When to Hold Firm, When to Negotiate, When to Walk Away

Three judgements sit at the heart of the survey stage. Sellers who handle them well tend to land within a few percent of their original price; sellers who fold quickly often concede more on price than they need to; sellers who refuse to negotiate at all sometimes lose the buyer, only to end up at a similar renegotiated price with a different buyer a couple of months later.

When to hold firm

The clearest case for holding firm is where the surveyor's findings are things the buyer could see at viewing or could reasonably expect from a flat of this age and type. Dated decor, a tired kitchen, condensation around old windows, hairline cracks in plaster, an older boiler the buyer saw in the cupboard: these are not new information. The buyer offered with these in front of them. A renegotiation against something already visible at viewing is generally not well-founded.

Holding firm is also appropriate where the surveyor has flagged something outside the seller's demise (cladding, lifts, communal entry systems, structural items the freeholder owns), where the proposed reduction significantly exceeds any quote the buyer can produce or where the request is a round-number price chip with no supporting evidence. In each of these cases, a polite, written explanation through the agent or the seller's solicitor is usually enough to settle the conversation.

The same applies where the surveyor has recommended further investigation by a specialist (electrics, structural, damp, timber) but the specialist's assessment is not yet in. A recommendation is not a finding. The sensible response is to wait for the specialist's report before discussing price, so the seller can see the full picture before conceding anything. A buyer who tries to chip the price on the strength of a "further investigation recommended" note alone is asking for a concession before the actual position is known.

When to negotiate

Negotiation is the right answer where the surveyor has identified a genuine new defect inside the flat that the buyer could not reasonably have anticipated, the cost of putting it right is supported by a written quote from a qualified contractor and the figure being asked for is in the same range as that quote. In those cases the buyer is, broadly, doing the seller a favour by surfacing the issue now rather than allowing it to derail the sale immediately before exchange. The right response is usually a price reduction equivalent to the cost of the work, sometimes with a modest contribution from the seller as a goodwill gesture if the underlying issue is a real one. Where the seller has agreed to arrange the work themselves before completion, a retention from the completion monies pending sign-off is sometimes used instead.

Negotiation also makes sense where the buyer is otherwise a strong proceeder (cash, no chain, a solicitor who is moving things along, a survey already done) and the alternative is to relist and start over with the time and uncertainty that involves. A modest reduction to keep a strong buyer engaged is sometimes worth more than a held-firm position with a relisting that drags on.

When to walk away

The case for walking away is strongest where the buyer's request is wildly out of proportion to the underlying issue, where the relationship has become difficult or where the buyer is showing a pattern of finding new reasons to reduce the price every few weeks. A buyer who has chipped twice already and is now back for a third pass is rarely a buyer who will exchange smoothly. In that situation, the cost of relisting (a few weeks back on the market, a fresh round of viewings) is usually less than the cost of continuing with a buyer who is no longer engaged in good faith.

Walking away from a sale at this stage is harder than it sounds, partly because the seller has usually spent on legal fees already, and partly because the agent will often resist. The deciding question is whether the relist is likely to find a different buyer at a similar price within a reasonable time. If the answer is yes, walking away is the right call. If the answer is no, a tighter negotiation with the existing buyer is usually better than starting again. A reminder: if the sale falls through and the cause is a flat-specific issue, the next listing carries disclosure obligations under the DMCC Act, which the seller's fall-through guide covers in more detail.

Practical Tips for the Days After the Survey

Most of the missteps at this stage are small ones, easily avoided once seen. The points below are the ones that come up repeatedly when sellers look back on a leasehold sale and wish they had handled the survey conversation slightly differently.

Let the estate agent open the conversation. The agent is the right person to take the buyer's first call after the survey and to summarise the position back to the seller. Keep your conveyancing solicitor in the loop too: they will usually have seen most of the issues that come up at this stage, and a good solicitor will be happy to offer some helpful pointers.
Ask for the relevant pages of the report, not a verbal account. Surveyors write carefully; a buyer's verbal summary often sharpens the language. The actual wording usually reads more measured than the phone call suggests.
Do not commit to a discount on the agent's first phone call. A "let me think about it and come back to you tomorrow" is almost always better than an immediate yes or no.
If a quote is produced, sense-check the figure before agreeing a price reduction. A specialist contractor's quote is sometimes higher than the work needs to be, and there is no harm in the seller getting their own quote as a second opinion if the figure looks high.
Keep written notes of the conversation. A short email summary back to the agent ("understood, the buyer is asking for a price reduction of £X based on a damp report; I will come back with a response by Friday") helps avoid a misremembered figure later.
Read the lease before responding on anything to do with windows, balconies or anything outside the flat itself. A clear answer based on the lease wording closes most communal-issue requests quickly.
Tell your solicitor what is happening. Even just cc'ing them into email correspondence with the estate agent keeps them informed and means they have the full picture if anything needs their input.
Stay calm with the buyer. Survey-stage renegotiations are normal in England and Wales and most of them are settled inside a fortnight. A pragmatic negotiation tends to end in a reasonable outcome; an emotional one rarely does.

Relevant Legislation

Four pieces of law sit behind the practical decisions at the survey stage.

The Digital Markets, Competition and Consumers Act 2024 (DMCC Act) came into force on 6 April 2025 and replaces the older Consumer Protection from Unfair Trading Regulations 2008 (CPRs) for property listings. The Act requires sellers and estate agents to disclose material information that would influence the average buyer's decision, including (for leasehold flats) the lease length, the ground rent, the current service charge, building safety information including EWS1 where applicable and any pending Section 20 major works. The Competition and Markets Authority (CMA) enforces the rules, and breaches can be civil or, in serious cases, criminal. Where a survey turns up a flat-specific defect that the seller agrees is genuine, the obligation to disclose it on any future relist sits under the DMCC Act.

The Law of Property (Miscellaneous Provisions) Act 1989, section 2 sets the rule that a contract for the sale of land must be in writing, contain all the agreed terms and be signed by both parties. Until that happens at exchange, neither side is legally bound, which is why a buyer can ask for a price reduction after the survey and a seller can decline. The "subject to contract" status of the deal is the legal backdrop to the entire renegotiation conversation.

The Landlord and Tenant Act 1985, section 20 governs major works in leasehold buildings. It requires the freeholder to consult leaseholders before incurring costs above £250 per leaseholder for works, or £100 per leaseholder per year for long-term agreements. Section 20 notices and the underlying cost figures are part of the LPE1 management pack the buyer's solicitor already has. Where the buyer's side raises upcoming major works as a price-reduction point, the conventional answer is that those costs follow ownership and are factored into the buyer's view of value, not the seller's price. In practice, the conversation is often less clean-cut, and a sensible seller weighs the principle against the practical position.

The Building Safety Act 2022 introduced significant protections for leaseholders in qualifying buildings (those at least 11 metres or 5 storeys with two or more dwellings). Qualifying leaseholders are protected from cladding remediation costs entirely, with capped contributions for non-cladding building safety defects. Funding for cladding remediation now usually flows through the original developer (under the Government's Developer Remediation Contract, signed by most major UK housebuilders) or through the Government's Cladding Safety Scheme rather than through the service charge. Where a buyer's lender has flagged the building over EWS1 or cladding, the conversation is mostly about whether the building is in a remediation pipeline already, not about the seller funding the work.

Frequently Asked Questions

How do I find out what the surveyor actually found?

Usually indirectly. The buyer's side passes findings on through one of three routes: the agent (after speaking to the buyer), the buyer's solicitor (as written enquiries to your solicitor), or as a renegotiation request that names the issue. The seller is not entitled to the report itself, but is entitled to ask for the relevant section to be shared if the buyer is asking for a price change based on it. Most reasonable buyers will share the relevant pages when they want the seller to take a renegotiation request seriously. If a buyer refuses to share anything but still wants money off, that is itself a sign that the request may not have much behind it.

The buyer wants to chip £10,000 off because of damp around the windows. Is that reasonable?

It depends on what is causing the damp and what it would actually cost to fix. Condensation around windows in older flats is very common and often reflects ventilation rather than building defects, so a five-figure reduction for a problem that may cost a few hundred pounds to address is usually disproportionate. If the surveyor has flagged the issue, ask the buyer to share the relevant section of the report and to support the request with a quote from a qualified contractor. The reduction should be guided by the cost of the work and the market evidence, not by the buyer's appetite to chip the price.

The survey flagged the cladding. What can I do about it?

Cladding and external wall systems are part of the building, not part of the flat. Responsibility for assessment and remediation sits with the freeholder or managing agent. As a leaseholder you cannot fix it yourself, and you are not expected to discount the flat by the cost of works you do not own and cannot commission. Funding routes for cladding remediation have changed significantly under the Building Safety Act 2022. For most buildings over 11 metres, the cost is now usually covered by the original developer (under the Government's Developer Remediation Contract, signed by most major UK housebuilders) or by the Government's Cladding Safety Scheme. Qualifying leaseholders in qualifying buildings are protected from cladding remediation costs altogether, and contributions to non-cladding building safety defects are capped. Some costs do still fall on leaseholders in non-qualifying buildings. The right step is usually to point the buyer's solicitor to the EWS1 form (the External Wall System form, used by lenders to confirm the cladding position) and any remediation plans the freeholder has published.

The buyer's lender has down-valued the flat. Is that the same as the survey?

No. The lender's mortgage valuation and the buyer's survey are two separate things. The valuation is commissioned by the lender to confirm the flat is worth at least the mortgage amount. The valuation may be a physical inspection, drive-by or desktop exercise depending on the lender's risk assessment, and the report is not normally shared with the buyer in full. A survey is commissioned by the buyer, is far more detailed, and produces a written report on the flat's condition. A down-valuation reduces the maximum the lender will lend, which can leave the buyer short on funds; a survey raises condition issues that may prompt the buyer to renegotiate. The two can happen together, but the response to each is different.

Should I commission my own survey before listing?

For most flats, no. A pre-listing survey is uncommon in England and Wales and the buyer's lender will require a fresh valuation in any case. The exception is where the seller knows there is a significant condition issue that is likely to be raised, and would prefer to hold a written, dated assessment to set against the buyer's surveyor. In that situation, a Level 2 or Level 3 RICS survey from an independent firm can give the seller a clearer view of the likely renegotiation range. For a flat that is in reasonable order and where the seller has no specific concerns, the cost of a pre-listing survey rarely repays itself.

Can the buyer back out after a bad survey result?

Yes. Until contracts are exchanged, either side can usually walk away without legal penalty, and a survey result is one of the points where buyers most often reconsider. The Law of Property (Miscellaneous Provisions) Act 1989, section 2 sets the formal rule: until a written contract signed by both parties exists, no enforceable agreement is in place. The practical question for the seller is not whether the buyer can back out (they can) but whether the underlying issue is something a future buyer would also raise. If the survey has uncovered a real defect, a different buyer is likely to find the same thing.

The surveyor recommended further investigation by a specialist. Is this something the seller has to pay for?

Generally not. The buyer commissioned the survey and the recommendation is for them to follow up if they want to. Until the buyer comes back with a specific request, the seller has no obligation to act. Arranging the work yourself can mean spending money the buyer was never going to ask for, and a specialist's findings could open up further conversations the buyer would not otherwise have raised. The sensible position is usually to wait, see what the buyer does with the recommendation and respond to whatever they actually request.

What is the difference between a price reduction and a retention?

A price reduction lowers the headline price itself: the contract is amended, the new figure is recorded by both solicitors and the buyer's lender is told. If the change is significant, the case may go back through the lender's underwriter. A retention leaves the headline price unchanged. The sale completes on the original figure, but the buyer's solicitor holds back an agreed sum from the completion monies in their client account pending a specific condition (agreed works completed, an outstanding certificate produced, a defined matter resolved). Once the condition is met, the retention is released to the seller. A retention is a temporary holdback against a defined event, not a permanent reduction.

The agent is pushing me to accept a reduction. What do I do?

Slow the conversation down. The agent is paid on completion, so a renegotiation that saves the sale tends to look attractive from their side, even when holding firm would be better for the seller. Ask the agent to put the buyer's request in writing with the supporting findings and any quotes for remedial work. Ask for 24 to 48 hours to consider it. Compare the proposed reduction to the cost of the work, the time and money already spent on conveyancing and the realistic re-listing price if the sale falls through. A reduction that reflects a genuine new finding is sometimes the right call; one that reflects a buyer trying their luck rarely is.

The survey was done weeks ago and the buyer has gone quiet. What should I do?

Ask the agent to chase. A buyer who has commissioned and paid for a survey is usually still engaged, and silence at this stage often reflects them digesting the report or waiting on a quote rather than losing interest. The agent should be able to confirm whether the report has been received, whether the buyer has any concerns and whether a renegotiation request is coming. If the agent cannot get a clear answer within a week, asking the buyer's solicitor to chase the buyer's side directly is a reasonable next step. A continuing silence beyond that point is itself information about the strength of the buyer's position.