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Surveys: why get one when buying a home?

16 min read

Mortgage valuation vs survey, RICS Levels 1–3, when to arrange one, and what to do if the report finds damp, roof issues or worse.

Professional reviewing documents with a calculator on a desk

You've found the house.

Your offer has been accepted.

Your mortgage lender has valued it and is happy to lend you the money.

So do you really need to spend hundreds of pounds on a survey as well?

For most buyers, the answer is yes, it is worth seriously considering.

A mortgage valuation tells the lender whether it is comfortable lending against the property. It does not tell you everything you might want to know about the condition of the home you are about to buy.

That distinction matters.

The house might be worth £500,000 and therefore provide perfectly acceptable security for the mortgage while still having a roof that needs replacing, damp that needs investigating or an extension containing defects.

A survey is there to help you understand what you are buying.

Government home-buying guidance makes the distinction very clearly: a mortgage valuation is not a survey and does not protect the buyer if something subsequently goes wrong with the property.

Here is what a survey can tell you, which type you might need and what to do if it finds a problem.

What is a property survey?

A property survey is an inspection of the home carried out by a qualified surveyor.

The surveyor assesses the visible condition of the building and reports on defects, risks and areas that may require further investigation.

Depending on the level of survey you choose, it might identify issues involving the roof, walls, windows, damp, drainage, movement, timber, insulation, services and other parts of the building.

RICS describes its Home Surveys as physical inspections designed to assess the property's condition and identify risks and potential legal issues.

The important point is that the survey is carried out for the buyer.

It is your opportunity to understand the physical condition of a property before you become legally committed to buying it.

Do I need a survey when buying a house?

A survey is not generally compulsory simply because you are buying a house.

But that does not mean skipping one is necessarily sensible.

Government guidance for England and Wales says buyers should strongly consider having a survey carried out because it can identify both minor maintenance and major works that may be required now or in the future.

Think about the scale of the decision.

You might be spending:

£300,000

£500,000

£800,000

or considerably more.

Compared with the purchase price, the cost of understanding the condition of the building can be relatively small.

Isn't the mortgage valuation already a survey?

No.

This is probably the biggest misconception.

Your mortgage lender may arrange a valuation after you apply for the mortgage.

Its primary purpose is to answer a question for the lender:

Is this property acceptable security for the amount we are lending?

It is not necessarily trying to answer:

Is this house in good condition?

Government guidance specifically warns that a mortgage valuation may not even involve a physical inspection and should not be treated as a survey.

So hearing:

“The valuation was fine.”

does not necessarily mean:

“The house has no significant problems.”

They are different exercises.

What can a survey find?

A survey can potentially identify visible evidence of problems such as damp, roof defects, cracking, movement, deteriorated brickwork, failed pointing, damaged windows, timber problems, poor drainage arrangements or other maintenance issues.

It may also recommend specialist investigation where the surveyor cannot determine the full extent of a problem during a normal inspection.

For example, a surveyor might spot cracking and recommend that a structural engineer investigates it.

Or they might see evidence of moisture and recommend that the cause is investigated further.

A survey does not guarantee that every possible defect will be discovered.

But it gives you a much more informed starting point than simply relying on what you noticed during a 20-minute viewing.

What are the different types of RICS survey?

RICS currently provides three main Home Survey levels: Level 1, Level 2 and Level 3. Level 2 can also be provided with a valuation.

The appropriate level depends on the property and how much detail you need.

What is a RICS Home Survey Level 1?

Level 1 is the most basic RICS Home Survey.

It provides a relatively concise overview of the property's condition and highlights significant issues that may need attention.

It is most likely to suit relatively straightforward properties that appear to be in reasonable condition.

For example, you might consider it for a conventional, fairly modern property where you are mainly looking for a basic professional condition check.

If you are buying an older, unusual or visibly altered property, you may want considerably more detail.

What is a RICS Home Survey Level 2?

Level 2 is likely to be the level many mainstream home buyers encounter.

It provides a more detailed inspection and assessment than Level 1 and is commonly suitable for conventional houses and flats in reasonable condition.

RICS currently provides both a Level 2 survey-only report and a Level 2 survey with valuation.

For a fairly typical property, this may provide the balance many buyers want between cost and detail.

But again, suitability depends on the individual home.

What is a RICS Home Survey Level 3?

Level 3 is the most detailed of the standard RICS Home Surveys.

It is often more appropriate where the property is older, unusual, extensively altered, visibly in poor condition or where you are planning substantial works.

If you are buying a period property with several extensions and obvious maintenance issues, a basic survey may not give you the level of information you really want.

A Level 3 survey can provide more detailed discussion of defects and remedial considerations.

The extra cost can make sense when the building itself carries more uncertainty.

Which survey should I get?

Start with the property rather than the price list.

A nearly new conventional house and a 250-year-old cottage are very different risks.

A useful rule of thumb is:

  • Level 1 for a relatively simple property where you want a basic condition overview.
  • Level 2 for many conventional houses and flats where you want a more useful assessment of condition.
  • Level 3 for older, unusual, extensively altered or visibly problematic properties, or where you expect major renovation.

The surveyor should be able to advise whether the service you are considering is appropriate for the property.

RICS currently requires surveyors providing these services to work within its Home Survey Standard, which sets requirements for consistent residential survey work.

When should I arrange the survey?

Normally after your offer has been accepted but before exchange of contracts.

That timing matters.

In England and Wales, an accepted offer is not normally legally binding until contracts are exchanged. Government guidance specifically notes that the price can still be negotiated before exchange, including where a survey finds a problem.

You therefore want to know about significant defects before you exchange.

Arranging the survey early also has another advantage.

If it identifies something requiring further investigation, you have more time.

For example:

Survey completed in week two.

Structural concern identified.

Structural engineer visits in week three.

Quotation obtained in week four.

You can then make a decision while the rest of the conveyancing is progressing.

If you wait until week ten to arrange the survey, the same problem could push exchange back significantly.

Can I have a survey before making an offer?

You could, but most buyers do not want to spend money surveying properties they may never successfully agree to buy.

The usual sequence is to agree the purchase price first and then carry out the more expensive due diligence.

However, if there is an obvious concern affecting your offer, you might seek specialist advice earlier.

Can a survey change the price I pay?

Yes.

Suppose you agree to buy a house for £600,000.

The survey then identifies that the roof is approaching the end of its life and a specialist roofer estimates replacement at £20,000.

You now have new information.

You might decide to continue at £600,000.

You might ask the seller to carry out work.

You might negotiate a reduction.

Or you might decide that the property is no longer right for you.

Before exchange in England and Wales, the agreed price can still be renegotiated.

But a survey finding does not automatically entitle you to a discount.

The seller is equally free to say no.

Should I renegotiate after the survey?

Only where the issue genuinely changes your view of the property's value or the cost of buying it.

Imagine the survey says:

“Internal decoration is tired and replacement carpets should be considered.”

You already saw that when you viewed the house.

Trying to deduct thousands of pounds because the surveyor has now written it down is unlikely to be particularly persuasive.

Now imagine the survey identifies:

“Significant roof defects requiring urgent repair.”

That is different.

A useful distinction is between things you knew about when making the offer and material problems you could not reasonably have known about.

Don't simply deduct the surveyor's estimated cost from the price

Suppose the survey suggests repairs could cost £15,000.

That does not automatically mean:

Original price £500,000
New price £485,000

First establish what the problem actually costs to fix.

Survey reports may recommend obtaining specialist quotations.

Do that.

A £15,000 concern may turn out to be a £3,000 repair.

Or the specialist might discover a £30,000 problem.

Evidence makes the negotiation much stronger.

What if the survey says I need a structural engineer?

Do not immediately assume the house is structurally unsound.

Surveyors sometimes recommend further investigation because something falls outside the scope of the normal survey or cannot be conclusively diagnosed from a visual inspection.

For example, cracking might be:

  • historic movement
  • thermal movement
  • minor settlement
  • something requiring structural investigation

The important thing is not to guess.

If the survey recommends an appropriately qualified specialist, investigate before exchange.

What if the survey finds damp?

“Damp” is another word that can frighten buyers more than it should.

The important question is why moisture is present.

Possible causes can include leaking gutters, damaged pointing, plumbing leaks, condensation, poor ventilation, ground levels or other defects.

RICS guidance specifically promotes a whole-building approach to moisture, looking for the source rather than treating every sign of damp as the same problem.

So if a survey identifies moisture, understand the cause before assuming an expensive treatment is required.

What if the survey finds a roof problem?

Again, establish the scale.

“Roof requires maintenance” might mean a relatively modest repair.

“Roof covering has reached the end of its serviceable life” could mean a much more substantial future cost.

Ask:

How urgent is it?

Is the roof currently leaking?

Does it need repair or replacement?

What would a roofer actually charge?

Then decide whether the issue affects your offer or simply becomes something to budget for.

What do the red, amber and green ratings mean?

Depending on the survey format, condition ratings can be used to help buyers understand how urgently different elements need attention.

Do not make the mistake of assuming every red rating means:

Do not buy this house.

Read the explanation.

The underlying issue matters more than the colour.

A relatively contained issue can receive an urgent rating because action is required, while a more expensive future maintenance item may not require immediate intervention.

Use the ratings to identify where you need to read more closely.

Should I be worried if the survey is long?

Not necessarily.

Surveyors are being paid to identify issues.

An older home may generate pages of observations without being a bad property.

A 120-year-old house is not going to read like a new-build specification.

The useful question is:

Which findings materially affect the safety, value, mortgageability or future cost of owning this property?

Ask your surveyor to help you distinguish important defects from normal maintenance.

Speak to the surveyor

Do not treat the report as the end of the conversation.

If something worries you, ask the surveyor about it.

For example:

“Of everything in the report, what would concern you most if you were buying this house?”

or:

“Which issues should I investigate before exchange and which are normal future maintenance?”

Those questions can make a long technical report far easier to understand.

A survey is not the same as conveyancing searches

These are also commonly confused.

Your surveyor primarily looks at the physical property.

Your conveyancer investigates the legal position and arranges searches — see our guide to the conveyancing process when buying.

Government guidance explains that local authority, drainage and water, and environmental searches are normally organised by your solicitor or conveyancer, while a home survey is a separate check on condition.

You normally need to think about both.

A survey might tell you that the roof is failing.

A search might tell you about a relevant planning or environmental issue.

The title might tell you that somebody else has rights across your driveway.

They answer different questions.

An EPC is not a survey either

An Energy Performance Certificate tells you about the energy performance of the home.

It does not tell you whether the building is in good condition.

Government buying guidance explicitly warns that an EPC is not a substitute for a home survey.

A home can have:

EPC B

and still have a leaking roof.

Or:

EPC E

and be structurally extremely well maintained.

Again, they measure different things.

Do I need a survey on a new-build home?

Do not assume “new” automatically means “perfect”.

A traditional home survey may not always be the most appropriate inspection for a newly built property, but buyers can consider a professional snagging inspection designed to identify defects in workmanship and finish.

New-build issues might include relatively minor things such as poor decoration and badly fitted doors, but they can also involve more significant construction defects.

The presence of a new-home warranty does not mean you should stop paying attention to the condition of the property.

Do I need a survey on a flat?

Potentially, yes.

You may not personally be responsible for maintaining the entire structure, but the condition of the building still matters.

If the block requires major work, leaseholders may ultimately contribute through service charges or major-works arrangements.

Your conveyancer will investigate the lease and management information.

A survey can help you understand the physical property.

For flats, it is particularly important to discuss with the surveyor exactly what can and cannot be inspected as part of the service.

Do I need a survey if I'm paying cash?

Being a cash buyer removes the mortgage lender.

It does not remove the building.

If anything, the decision becomes entirely yours because there is no lender carrying out even a valuation for its own purposes.

You still need to decide whether you want professional information about the property's condition before committing hundreds of thousands of pounds.

Cash can make a transaction faster.

It does not make defects disappear.

Do I need a survey if the house looks perfect?

Appearances can be misleading.

Fresh paint can exist alongside an old roof.

A beautiful kitchen tells you very little about drainage.

New flooring tells you very little about what is underneath it.

And a seller may genuinely have no idea that a defect exists.

A survey is not about distrusting the seller.

It is about recognising that properties are complicated physical assets.

What if I'm buying a renovation project?

This is where a more detailed survey can become particularly useful.

You already know the property needs work.

The important question is:

How much work?

There is a big difference between:

“Needs new kitchen, bathrooms and decoration.”

and:

“Needs new kitchen, bathrooms, decoration, roof, structural repairs and drainage work.”

A renovation buyer should understand the difference before building their budget.

What if I'm planning an extension?

Tell the surveyor.

The survey itself does not replace architectural, structural or planning advice, but knowing your intentions can make the inspection more useful.

If you are specifically buying because you want to substantially alter the house, you may also want specialist advice before committing.

The property could have:

  • physical limitations
  • structural considerations
  • access difficulties
  • drainage constraints

that affect the practicality or cost of your plans.

Your conveyancer should separately investigate legal and planning restrictions.

Should I choose the cheapest surveyor?

Price matters.

But you are buying professional judgement about an asset potentially worth hundreds of thousands of pounds.

Compare:

  • qualifications
  • experience
  • local knowledge
  • experience with the property type
  • level of survey
  • what the report includes
  • whether you can speak with the surveyor afterwards

A surveyor who frequently inspects Victorian houses may be particularly useful if you are buying one.

Likewise, unusual construction may justify finding someone familiar with that building type.

Should the surveyor be RICS qualified?

RICS is one of the major professional bodies in this area and provides the widely used Home Survey framework.

Government guidance also identifies trained professionals including members of RICS and other professional surveying organisations when advising buyers to arrange property surveys.

Whichever route you choose, check that the professional has suitable qualifications, experience and insurance for the work being undertaken.

What if the survey finds nothing major?

That is a good outcome.

Some buyers feel disappointed after paying hundreds of pounds for a survey that says the house is basically fine.

Think of it differently.

You have paid for greater confidence before making a very large financial commitment.

The purpose of the survey is not to find enough defects to justify its fee.

It is to help you understand the property.

Sometimes the best result is:

Nothing significant found.

Can a survey save you money?

Potentially considerably more than it costs.

Suppose you spend £700 on a survey and it identifies an unexpected issue that genuinely requires £15,000 of work.

You might then:

  • negotiate the price
  • ask the seller to resolve it
  • budget properly
  • decide not to buy

In each case, the survey has given you information before you became committed.

But do not treat a survey purely as a negotiation tool.

Its real purpose is risk reduction.

Can a survey stop me making a bad purchase?

It can help.

But no survey can guarantee that a home will never develop a problem.

Surveyors inspect within the limits of the agreed service.

They generally cannot:

  • open walls
  • remove fitted floors
  • dismantle ceilings
  • inspect inaccessible areas
  • predict every future failure

That is why survey reports contain limitations.

A survey reduces uncertainty.

It does not eliminate it.

What should I do when the survey arrives?

Do not simply scroll to the red items.

Read the report in context.

Identify the issues that are urgent, expensive or require specialist investigation.

Then establish what each significant issue actually means.

A sensible process is to separate findings into three groups: things you expected and can simply budget for, things that need clarification before exchange, and things serious enough to potentially affect whether you proceed or what you are prepared to pay.

That is much more useful than panicking because an older house has a long survey report.

Should I send the survey to my solicitor?

If the survey raises something with a possible legal or documentary aspect, tell your conveyancer.

For example, the surveyor might notice:

  • an extension
  • loft conversion
  • altered layout
  • shared access
  • drainage arrangement
  • boundary oddity

Your conveyancer can then check whether the appropriate documents or legal rights exist.

This is where the physical and legal investigations complement each other.

Can the seller see my survey?

The survey is normally commissioned by you.

You do not necessarily have to simply hand the entire report to the seller because you want to renegotiate.

If you are raising a specific defect, you may instead provide the relevant evidence or quotation.

Your surveyor can advise you about the report and its use.

What happens if the seller refuses to renegotiate?

Then you have a decision.

Suppose:

Agreed price: £550,000

Survey identifies additional work you believe will cost: £12,000

Seller says:

“The price remains £550,000.”

You can still proceed.

You can walk away before exchange.

Or you can try to reach a compromise.

The fact that the survey identified a problem does not automatically determine who should pay for it.

The key question is whether you still believe the property is worth the price to you given what you now know.

Don't use the survey just to find reasons to reduce your offer

A survey should help buyers make informed decisions.

It should not simply become a shopping list for reopening every aspect of the deal.

If you offered £500,000 knowing that:

  • the kitchen was old
  • windows were dated
  • carpets needed replacing
  • decoration was tired

those things were arguably already reflected in the property you chose to buy.

Concentrate negotiations on information that genuinely changes the picture.

That approach is more credible and much more likely to produce a sensible conversation with the seller.

In Scotland, the process is different

Most homes marketed for sale in Scotland require a Home Report, which provides buyers with considerably more property information upfront, including a Single Survey.

So the survey process is not directly equivalent to the England and Wales system described above.

If you are buying in Scotland, understand the Home Report and decide whether you need any additional specialist inspection.

Northern Ireland also has its own buying process.

So, is a survey worth it?

For most buyers, the cost should be considered against the size of the financial decision.

You are not buying a new television.

You are buying a building.

A building containing:

  • roof
  • walls
  • foundations
  • windows
  • drainage
  • plumbing
  • electrics
  • heating
  • timber
  • potentially decades or centuries of alterations and repairs

A survey cannot tell you everything.

But it can tell you considerably more than you knew from the viewing.

And crucially, it can tell you before exchange, while you still have the opportunity to investigate, negotiate or reconsider.

The survey is one piece of the property puzzle

A good buying decision combines several different types of information.

The survey tells you about the physical condition.

The conveyancing process investigates the legal position.

Searches help identify local and environmental information.

The EPC tells you about energy performance.

Sold-price information helps you judge value.

Looking at any one of those in isolation gives you only part of the story.

Put them together and you start to understand what you are actually buying.

Know more before you exchange

That is ultimately what a survey is about.

You may discover that the house is in excellent condition.

You may discover a few jobs to budget for.

You may find something worth renegotiating.

Or you may discover a problem serious enough to reconsider the purchase.

Every one of those outcomes is better discovered before you exchange contracts than after you collect the keys.

Tepilo helps buyers bring together more of the information behind a property, so you can understand its history, energy performance, value and other useful details before making one of the biggest financial decisions of your life.

See also the full buying and selling process and hidden costs of buying.

Research the property with Tepilo before you commit.