Why this matters with a new build

A new build feels like the one purchase where a survey should be unnecessary. The house is newly built, was inspected during construction, and carries a ten-year structural warranty. None of that means it is defect-free on the day you get the keys.

New homes are built at speed, by many trades, under pressure to hit completion dates. Warranty providers such as NHBC inspect during the build, but only as staged spot-checks. The developer’s own quality control is checking its own work. Independent eyes, working only for you, are the missing layer.

The stakes are set by the warranty itself. In the first two years, the builder must put right defects that breach the warranty’s standards. From years three to ten, cover narrows to major structural failures. Every defect you document early sits in the strongest part of that structure. Every one you miss migrates towards your own cost. The New Homes Quality Board and the ombudsman regime have strengthened buyers’ hands — for those who inspect and report.

What is a snagging survey?

A snagging survey is a systematic inspection of a newly built home. It identifies “snags”: defects, damage and unfinished work the developer should put right. The output is a snag list — a numbered, photographed, room-by-room schedule you submit to the developer as a formal record.

Snags run the full spectrum. At one end sit cosmetic items: paint runs, scratched glazing, chipped worktops, poor mastic. At the other end: weeping plumbing joints, missing loft insulation, poor roof detailing, or a damp-proof course bridged by paving. A good inspection treats both ends seriously — a new build is sold, and priced, as a finished product.

Even on well-run sites, a thorough inspection often runs into the dozens of snags — very few visible on the emotional walk-through most buyers do at handover.

What do snagging inspections actually find?

Cosmetic and finishing defects

The most numerous category: paintwork, plaster blemishes, damaged doors, uneven tiling, scratched glass and gappy mastic seals. Individually trivial. Collectively, the difference between the show home you bought and the plot you received.

Plumbing and services

Weeping joints under baths and sinks, unclipped pipework that hammers, uneven radiators and poorly sealed shower trays. Small leaks cause disproportionate damage — they sit concealed behind pristine finishes.

Insulation and ventilation gaps

Loft insulation missing over bathrooms or hatches, cold bridging at junctions, extract fans ducted nowhere in particular. These snags cost you quietly, through heating bills and condensation.

Roof detailing and external work

Slipped or chipped tiles, poorly bedded verges, incomplete flashings, blocked rainwater goods. External snags also include the plot itself: garden levels, drainage gullies, boundaries and driveways left short of specification.

The serious end: damp-proofing and structure

A damp-proof course bridged by landscaping, render carried down over it, weep holes blocked by mortar. These are the snags that mature into genuine building defects. They are the strongest argument for an inspector who understands construction, not just decoration.

Who puts what right — and under which cover?

The same defect moves between these columns depending on when it is found and reported.

Issue type	Typical examples	Who puts it right, and under what
Cosmetic and finishing	Paint runs, chipped worktops, scratched glazing, mastic gaps	Builder — usually only if recorded at or near handover; later reports get disputed as occupant damage.
Incomplete work	Unfinished landscaping, missing trims, absent extract ducting	Builder, under the sale contract and the two-year builder-liability period. Your written snag list is the evidence.
Functional defects	Leaking joints, hammering pipework, doors out of adjustment, patchy heating	Builder, within the two-year period — report promptly and in writing. Emergencies (major leaks, no heating) have separate urgent routes.
Thermal and ventilation	Missing insulation, cold bridging, condensation from poor extraction	Builder within two years if reported; hard to attribute later. Left unreported, the running costs are yours.
Major structural defects	Foundation movement, structural roof failure, load-bearing wall defects	Warranty provider (e.g. NHBC Buildmark) under the ten-year structural cover — subject to the policy’s definitions and excesses.
Everything unreported	Any defect first raised after the relevant window closes	You, at your own cost — the position a snagging survey exists to prevent.

The warranty small print matters. Most UK new builds carry NHBC Buildmark or a similar policy. Each policy defines what counts as a defect, in which period, with what claim process. Read yours before completion, not after.

When should you snag?

Timing is the single biggest driver of value.

Before legal completion is the ideal. The developer still needs your money, and snags can be put right before you move in. Nothing gets blamed on your furniture. Developers registered with the New Homes Quality Board must cooperate with a pre-completion inspection, by a suitably qualified inspector of your choosing, under the New Homes Quality Code. Not every developer is registered, but many major names are — ask in writing.

Within the first few weeks of moving in is the practical fallback where pre-completion access is refused. The home is still demonstrably new, and attribution arguments are weak.

Before the two-year window closes is the final backstop. Some defects only reveal themselves through a first winter: seasonal shrinkage, heating performance, condensation patterns. A second look late in year two catches what the first pass could not.

DIY snagging or a professional inspection?

You can compile your own snag list, and even a basic one beats nothing. The difference is coverage. Buyers find the cosmetic layer. Professionals also find the plumbing, insulation and damp-proofing layer — they know what “correct” looks like. A professional list also lands harder with a site manager.

DIY snagging basics

• Work room by room with a torch, spirit level and phone camera — photograph everything
• Open and close every window and door; run every tap, flush and shower; test every socket
• Look inside the loft: insulation coverage, daylight where there should be none, unclipped cables and pipes
• Walk the outside: ground levels against the damp-proof course, gullies, verge and flashing lines, driveway finish

Questions to put to the developer

• Will you allow a pre-completion inspection by an inspector of my choosing — and if not, why not?
• Are you registered with the New Homes Quality Board, and which warranty provider covers this plot?
• What is your written process and timescale for resolving reported snags?

Documents to hold before completion

• The warranty policy document and its defect definitions — not just the certificate
• Building-control completion certificate and commissioning certificates (gas, electrical, ventilation)
• The specification you bought against — finishes, appliances, landscaping — to compare what was delivered

Lower-risk and higher-risk situations

Snagging survey vs Level 2 and Level 3 surveys

They answer different questions. A snagging survey asks: has this brand-new product been finished to the standard you paid for? A Level 2 or Level 3 survey asks: what condition is this building in, and what do its defects mean? On a genuinely new home, the first question dominates. The moment the property is not straightforwardly new, condition becomes the live question. A conversion, a plot that stood unsold, a “nearly new” resale — there, a survey serves you better. Our guide to Level 2 vs Level 3 scope explains what each level inspects.

Decision framework

Your situation	Sensible route
Brand-new home, developer allows pre-completion access	Professional snagging inspection before completion
Brand-new home, already completed and moved in	Snagging inspection within the first weeks, plus a follow-up before the two-year window closes
Nearly new resale (roughly under ten years old), conventional construction	Level 2 Homebuyer Report — condition, not completion, is now the question
Conversion, refurbished period building sold as “new”, or non-standard construction	Level 3 Building Survey — the underlying fabric predates the warranty
Structural defect emerging in years three to ten	Warranty claim to the provider, supported by independent professional evidence

Where Flettons fits in

Flettons does not sell a stand-alone snagging package — so this guide has no snagging product to push. Our core work is RICS home surveys, and our surveyors are independent and regulated by RICS. A Level 2 Homebuyer Report from £450 suits nearly-new, conventional homes. A Level 3 Building Survey from £550 covers conversions, refurbished buildings sold as “new”, and non-standard construction. It is also the tool for defects that need analysis and evidence: warranty disputes, emerging movement, damp on a young building. Current figures are on our prices page, and this guide explains what drives survey fees.

What to do with your snag list

1. Compile the list properly — room by room, numbered, photographed and dated.
2. Submit it in writing to the developer’s defects process, keeping proof of delivery. Verbal reports evaporate.
3. Track every item — dates reported, promised, attended and resolved — and chase in writing.
4. Escalate what stalls: the developer’s formal complaints procedure first, then the New Homes Ombudsman or the warranty provider’s resolution service.
5. Use the warranty for what it covers — structural defects in years three to ten go to the provider as a claim.
6. Close each item out — inspect remedial work before signing it off. A bad repair is a new snag.

The framework mirrors every good report: what was found, what it means, whose responsibility it is, and what to do next.

An example from practice

Frequently asked questions

Surveyor’s conclusion

The question is rarely whether a new build has snags — it is whether they are documented while someone else must put them right. A snagging survey is cheap insurance against the two ways buyers lose on new homes. The first: cosmetic standards quietly renegotiated after handover. The second: slow-burn defects — insulation gaps, bridged damp-proofing — surfacing after the two-year window shuts. Inspect before completion if the developer allows it, put everything in writing, and revisit before year two ends. If the property is new-ish rather than new, commission the survey instead.

This article is general guidance, not advice on a specific property or warranty policy. Warranty terms, liability periods and code protections vary by provider, developer and contract — always check the documents for your own purchase. Snagging inspections and RICS home surveys are visual, non-invasive inspections, subject to the limitations stated in the report.

Why this matters when buying

The roof is the most expensive single element of most houses to renew. It is also the one element no buyer can examine at a viewing. Neither, in most cases, can the surveyor. If a failing covering is missed before exchange, the renewal bill passes to you in full.

The costly mistake is rarely a defect nobody could have found. It is the assumption that the roof was examined when it was only observed from the ground. Every RICS report states its inspection limits; few buyers read that section. This guide explains those limits, what a dedicated inspection covers, and when do you need a roof survey.

What is a roof survey — and why is the roof a blind spot?

A roof survey is a focused inspection of the coverings, junctions, chimneys and rainwater goods, with proper sight of the roof itself. It is carried out by drone, elevated camera, ladder or scaffold. Where safe access exists, the roof structure is also inspected from within the loft.

Why does it exist as a separate product? Because inspections under the RICS Home Survey Standard are visual and non-intrusive. The surveyor views the roof from the ground with binoculars, and only where safe. That method has real limits:

• Hidden slopes. Rear slopes, butterfly-roof inner slopes and anything behind a parapet may be invisible.
• Distance. Slipped nibs, hairline cracks and early delamination are hard to resolve at two storeys — harder still at four.
• Concealed details. Valleys, parapet gutters and the back faces of chimneys — where roofs actually leak — face away from every safe vantage point.
• Flat roofs. A flat roof often cannot be seen at all without access equipment.

None of this criticises the standard survey; it is the stated scope. The question is how much unknown that scope leaves over your head.

What does a dedicated roof survey cover?

Roof element	What the inspection examines
Coverings	Slipped, cracked, delaminating or missing tiles and slates; slate nail fatigue; past patch repairs.
Ridge and hips	Ridge and hip tiles and their mortar bedding — a common failure point.
Valleys and parapet gutters	Lead, tile or fibreglass valleys and concealed gutters: blockages, splits and worn linings.
Flashings and junctions	Lead at chimneys, abutments and roof windows: lifted edges, thermal splits, failed mortar substitutes.
Chimneys	Brickwork, pointing, flaunching and pots viewed from above — including faces no ground position can see.
Flat-roof coverings	Felt, EPDM, GRP or asphalt: blistering, splits, ponding, and failing edge and upstand details.
Rainwater goods	Gutters, downpipes and outlets — blockages, misalignment, and tell-tale tile debris.
Roof structure	Rafters, purlins and joists — spread, deflection or decay — seen from the loft where access allows.

Drone roof surveys: what aerial imagery shows

A drone roof survey captures high-resolution 4K imagery from directly above the roof. It sees every slope, looks straight down into valleys and parapet gutters, and records all four faces of a chimney. Individual tiles appear in detail binoculars cannot approach. Instead of “the roof appears weathered”, you get photographs of specific failed tiles to hand to a roofer.

Drones are the right tool where ground inspection fails: fragile coverings that must not be walked on, tall buildings, thatch, towers, and parapet roofs. There is no scaffold cost. The whole roof is recorded in one visit.

They have honest limits too. Flying depends on weather, and some locations sit inside airspace restrictions under the CAA Drone Code. A drone cannot lift a tile or probe a timber. Where imagery reveals a suspect area, physical investigation may still follow. The drone tells you precisely where, and whether, that expense is justified.

When do you need a roof survey?

Buying, when the surveyor flags restricted visibility

The clearest sign you need a roof survey. If a report says the roof “could not be fully inspected”, the building’s most expensive element has not been examined. A drone survey converts that stated unknown into evidence — before exchange, while you can still act on it.

Unexplained leaks and damp

Ceiling stains that come and go, damp around a chimney breast, or a musty loft after rain all point upwards. Aerial imagery finds the cause far faster than trial-and-error repairs.

After storms — and before insurance claims

High winds strip and displace tiles where you cannot see from the garden. A post-storm survey documents the damage with dated imagery — the evidence an insurer asks for.

Before and after roof works

Before works, independent imagery scopes what genuinely needs doing, so quotations address the same defects. Afterwards, it verifies the job was done — including on slopes the roofer knew you could not see.

Flat-roof due diligence

Flat coverings have the shortest lives of any roof type and are often invisible from the ground. If a purchase includes one of unknown age, assume nothing until it has been seen.

How long do roof coverings last?

Age is the strongest predictor of trouble. When the covering nears the end of its typical life, you need a roof survey as basic due diligence.

Covering	Typical lifespan	Common failure modes
Natural slate	80–120+ years	Nail fatigue (“nail sickness”) causing slipped slates; delamination of poorer slates
Clay plain tiles	60–100+ years	Frost damage and delamination of tile faces; nib failure causing slippage
Concrete interlocking tiles	40–60 years	Surface erosion; failed mortar to ridges and verges — see our Redland 49s guide
Built-up felt (flat)	10–20 years	Blistering, splits at joints, ponding, UV embrittlement
EPDM rubber (flat)	20–40 years	Failures at seams, edges and upstands rather than the membrane
GRP fibreglass (flat)	20–30 years	Topcoat cracking and pinholes, especially if laid in poor conditions
Thatch	15–40 years (ridge 10–15)	Wear at ridge and valleys; moss and vermin damage

Ranges are indicative — exposure, workmanship, pitch and maintenance move every figure.

What should you check before booking?

Signs the roof needs proper investigation

• Stains, damp patches or bubbling paint on upstairs ceilings or chimney breasts
• Daylight visible through the roof in the loft, or damp-smelling insulation
• Slipped, cracked or missing tiles visible from the street — rarely the whole story
• A sagging or undulating ridge line, or visibly uneven slopes
• Tile grit, moss and mortar debris collecting in the gutters

Questions and documents to chase

• How old is the roof covering, and has it ever been renewed?
• Is there guarantee paperwork for past roof works — and does it transfer?
• Do invoices show a pattern of repeated patch repairs?
• Will the loft be accessible on the day of the survey?

Which situations are lower and higher risk?

Decision framework

Your situation	Sensible route
Modern house, simple roof, fully visible, no symptoms	A standard Level 2 or Level 3 Building Survey covers it
Buying, and the surveyor flags restricted roof visibility	Add a drone roof survey before exchange
Older property with hidden slopes, parapets or a complex roofscape	Level 3 Building Survey plus drone roof imagery from the outset
Known leak, or covering near the end of its lifespan	Drone roof survey to locate and document, then a roofer’s quotation
Sagging ridge, spreading at eaves, leaning chimney	Survey first; structural engineer input where the evidence warrants it
Flat roof of unknown age over extension or main building	Aerial imagery plus covering-specific assessment

Current fees for every survey type are on our survey costs page — and for what drives survey pricing generally, see How much does a building survey cost?

The Flettons drone roof survey

Flettons surveyors are independent and regulated by RICS, and our drone roof survey service starts from £399. Every survey captures detailed 4K imagery of the coverings, ridges, valleys, flashings, chimneys and rainwater goods. The report adds plain-English analysis of what the imagery shows.

It also integrates with our building surveys. Add it to a Level 3 Building Survey and the aerial findings are interpreted alongside what the surveyor sees in the loft and on the elevations. One joined-up assessment, from above and below. Still choosing a level? Our Level 2 vs Level 3 guide covers that decision.

What happens if the survey finds a roof problem?

1. Establish the extent — a few slipped tiles, or a covering failing wholesale? The imagery answers this.
2. Understand the urgency — active water entry needs action in weeks; weathering may allow years.
3. Check the structure — confirm whether the loft inspection shows spread, deflection or decay beneath.
4. Obtain roofer’s quotations — real figures for the defects photographed, not a guess for “the roof”.
5. Ask for the paperwork — guarantees and invoices for past works.
6. Renegotiate, budget or walk away on evidence — a photographed, costed defect is a fair basis for a price reduction.

This is the framework every Flettons report is built around: what we found, what it means, what it could cost, and what to do next.

An example from practice

Frequently asked questions

Surveyor’s conclusion

Roofs fail quietly, out of sight, and expensively. The standard survey does what it says: it examines the roof from where it can safely be seen, and tells you where it could not. So when do you need a roof survey? Whenever the answer to “has anyone actually seen this roof?” is no: an ageing covering, a hidden slope, an unexplained stain, a flagged restriction. For less than the cost of scaffold, aerial imagery replaces the biggest unknown in the building with evidence you can negotiate and budget with.

This article is general guidance based on inspection experience, not advice on a specific property. A roof survey is a visual inspection subject to the weather, airspace and access limitations stated in the report; it does not involve opening up the structure. Always commission an independent RICS-regulated surveyor before committing to a purchase.

Why this matters when buying

First-time buyers often assume the survey happens automatically — arranged by the solicitor, or bundled with the mortgage. It is not. Nobody in the transaction is responsible for checking the building on your behalf. If you do not instruct a surveyor, no surveyor is instructed. You exchange contracts on a property nobody has inspected for you.

The confusion is understandable, because everyone else in the chain is busy checking something. The solicitor raises enquiries. The lender sends a valuer. The agent chases progress. It is easy to conclude the building must be covered somewhere in all that activity. It is not. So it pays to know who organises the survey when buying a house — and to book early. The government’s How to Buy a Home guidance agrees: arranging a survey is a step the buyer takes, in the buyer’s own interest.

Who organises the survey when buying a house — and who does what

A house purchase involves four professionals plus you. Each has a defined job, and only one of them ever examines the building in your interest. This table is worth two minutes of any buyer’s time.

Party	What they do	What they do NOT do
You — the buyer	Choose, instruct and pay for the survey. Decide the level, receive the report, and act on it.	Nothing is done for you by default. If you don’t book a survey, there isn’t one.
Solicitor / conveyancer	Legal title, local searches, contract, enquiries of the seller. Handles exchange and completion.	Never inspects or assesses the building. Searches are paperwork, not bricks.
Estate agent	Markets the property and negotiates for the seller. Arranges access for viewings and the survey.	Does not act for you. Any surveyor they recommend should be weighed carefully — referral relationships are common in the industry.
Mortgage lender	Commissions a valuation to protect its own loan — often a brief visit or a desktop exercise you never see.	Does not survey the property, does not owe you advice on condition, and may never send anyone inside.
Surveyor	Inspects the building and reports to you on condition, defects and risks — because you instructed them directly.	Won’t appear unless instructed. No one else in this table will bring them in.

Two of these roles are misread most often. The estate agent is contractually employed by the seller. Their job is a sale at the best price — a cautious survey is not in their client’s interest. That is a structural fact, not a criticism of agents. And the lender’s valuation is not a survey in any meaningful sense. It answers one question — is this adequate security for the loan? — frequently from a desk. For what a real inspection covers, see our room-by-room guide to what a house survey checks.

The timeline: when to book a survey

Offer accepted — instruct your surveyor immediately

The survey belongs at the very start of the purchase — before or alongside the conveyancing, not at the end. Instructing takes minutes, yet many buyers leave it weeks. Book as soon as your offer is accepted, so the findings arrive while you can still negotiate freely.

Booking and access

You choose the survey level and instruct the surveyor directly. The surveyor then arranges access through the estate agent, who holds the keys and coordinates with the seller. This is the one part the agent legitimately handles — access, not the choice of surveyor.

The inspection

The inspection is visual and non-intrusive, carried out on a single visit. It covers the roof, external fabric, interiors including the loft where access allows, visible services and outbuildings within scope. Ask the agent beforehand to make sure the loft hatch is reachable and all rooms are open.

The report — around five to ten working days

Expect the report about five working days after inspection for a Level 2, and about ten for a Level 3. Reputable firms flag significant findings sooner. Build this into your plans. A survey instructed late can hold up exchange; instructed early, it costs the transaction nothing.

Acting on the findings

The report feeds two channels. Your solicitor can raise enquiries about alterations, certificates and guarantees. And costed defects are legitimate grounds to revisit the price. Both only work if the report exists before you are pressed to exchange.

What to have ready when you book

• The property address, agreed purchase price, and the estate agent’s contact details for access
• What you know about the property: approximate age, construction type, extensions or conversions
• Anything that worried you at viewings — cracks, damp smells, roof condition, a freshly decorated room
• Your thoughts on level: modern and conventional leans Level 2; older, extended or altered leans Level 3
• A request to the agent that the loft, garage and every room will be accessible on the day
• The question that matters most: who — by name — will carry out the inspection? Our guide to building survey costs explains why you should always ask who will do your survey

Smooth purchases vs risky ones

None of the risk patterns involves anyone doing anything wrong. They are all sequencing and assumption errors — and every one is avoidable by instructing your own surveyor early.

Decision framework

Your situation	Sensible choice
Modern (post-1985), conventional, unaltered house in good condition	Level 2 Homebuyer Report
Pre-1985, period, extended, altered or non-standard construction	Level 3 Building Survey
Complex, high-value or high-risk purchase	Level 3+ Building Survey
Roof that cannot be safely or closely inspected from the ground	Add a drone roof survey to either level
Unsure which level fits the building	See the Level 2 vs Level 3 comparison — or ask the surveyor before booking

For a deeper treatment of the choice — what each level inspects and where the scope boundaries sit — read Level 2 or Level 3: which do you need?

Organising your survey with Flettons

Flettons is an independent surveying firm, regulated by RICS, covering London and the South East. Because the buyer instructs us directly, organising takes minutes: get an instant quote by property value on our survey costs page, then instruct online. We handle access with the estate agent from there. Level 2 Homebuyer Reports start from £450 and Level 3 Building Surveys from £550. Level 3+ starts from £850, and drone roof surveys from £399.

A summary of significant findings is emailed within 24 hours of the inspection. The full report follows in around five working days for a Level 2, or ten for a Level 3. You are told who will inspect before you commit, and you can speak to them after the report. Any buyer organising their own survey should insist on both.

What happens if the survey finds problems?

1. Read the report with the surveyor — a short call separates cosmetic issues from ones that change the deal.
2. Establish cause and extent — the report’s analysis tells you what is known and what needs further investigation.
3. Commission specialist checks where directed — electrician, drainage CCTV, structural engineer or damp and timber specialist.
4. Price the liability with real quotations — contractors’ figures, not guesses, are your evidence.
5. Brief your solicitor — certificates, guarantees and building-regulations evidence for past works become targeted enquiries.
6. Renegotiate, proceed or withdraw on evidence — a costed defect is a fair basis for a price reduction.

This is the framework every Flettons report is built around: what we found, what it means, what it could cost, and what to do next.

An example from practice

Frequently asked questions

Surveyor’s conclusion

Every professional in a house purchase is checking something, and none of them is checking the building for you. That is the whole answer to who organises the survey when buying a house: the buyer, directly, or nobody. The buyers who come out of a purchase well tend to do three things. They instruct early, the moment an offer is accepted. They choose their own surveyor — independent, RICS-regulated, and named before booking. And they treat the lender’s valuation as what it is: the lender’s protection, not theirs. Organise the survey yourself, organise it early, and ask who will inspect before you pay anyone.

This article is general guidance on the home-buying process in England, not advice on a specific property or transaction. Roles can vary in Scotland, where the seller’s Home Report changes the sequence. Every RICS survey is a visual, non-invasive inspection subject to the scope, access and limitations stated in the report. Always commission an independent RICS-regulated surveyor to inspect the actual property before committing to a purchase.

Why this matters

“Valuation” and “survey” are used interchangeably in everyday conversation, by estate agents, and sometimes by lenders. They are not the same product. They are not even the same profession’s output. A valuer produces a valuation; a surveyor reports on condition. Confusing the two is an expensive mistake.

The classic trap runs like this. Your mortgage lender arranges a “valuation survey”, so you assume the property has been inspected on your behalf. It has not. The mortgage valuation is commissioned for the lender and protects the lender’s loan. It is often carried out from the desk or the kerb. The valuer may never enter the building. No one in that transaction has examined the roof, the damp or the structure for you. Understanding the valuation vs survey distinction before you commit is what this guide is for.

The three things people conflate

Online estimates and estate-agent appraisals

Property portals generate automated estimates from sold-price data and local trends. Estate agents offer free “market appraisals” when you are thinking of selling. Both are marketing tools. An algorithm has never seen your house. An agent’s appraisal is a pitch for your instruction. It is not a professional opinion of value, and it says nothing about condition.

A formal RICS “Red Book” valuation

An RICS Registered Valuer prepares a formal valuation to the RICS Red Book. That is the global standard for professional valuation. It produces a defensible written opinion of market value that courts, lenders, HMRC and insurers will accept. You need one for lending decisions, probate, inheritance and capital gains tax, matrimonial settlements, shared-ownership staircasing and similar formal purposes. It is not a condition inspection. The valuer considers condition only as far as it affects value, and the report will not itemise defects for you.

A home survey

A survey is a professional inspection of the building’s condition, carried out under the RICS Home Survey Standard. A Level 2 Homebuyer Report condition-rates a conventional, modern home. A Level 3 Building Survey analyses an older, extended or altered one in depth. A survey tells you what you are actually buying, not just what it is worth. Its subject is the roof, the walls, the damp, the movement and the alterations. If you are unsure which level fits, see our Level 2 vs Level 3 comparison.

Valuation vs survey: the differences at a glance

This is the comparison that untangles the confusion — four products, four different jobs.

Product	Who it is for	What it tells you	What it does NOT tell you
Online estimate Portal or algorithm-generated	Anyone, free, instant	A rough price range based on sold-price data for similar homes	Anything about your specific house — its condition, its defects, or a figure anyone can rely on
Estate-agent appraisal Free marketing appraisal	Owners thinking of selling	What an agent believes they could market it for	A professional opinion of value — and nothing at all about condition
Mortgage / Red Book valuation RICS Registered Valuer	The lender (mortgage), or you (probate, tax, legal)	A formal, defensible opinion of market value for a defined purpose	The condition of the building — defects are not itemised, and a mortgage valuation may be desktop or drive-by
Home survey RICS Level 2 or Level 3	You, the buyer (or owner)	The visible condition of the building: defects, causes, consequences, what to do next	A formal market value — condition, not price, is its subject

The lender’s valuation is not for you

This catches buyers every year. The valuation your lender arranges answers one question: is this property adequate security for the loan? Many are now completed as desktop valuations or brief external “drive-by” inspections. Even a full internal one involves minutes in the property, not hours.Relying on it as evidence of condition is like relying on a price tag as evidence of quality.

“What is my house worth right now?” — the honest answer

If you simply want a figure today, the free routes are legitimate. Check portal estimates for your address and review recent sold prices in your street. Then invite two or three local agents to appraise it. Treat the result as a range, not a fact. Agents competing for an instruction have an incentive to flatter the number. Algorithms cannot see your extension, your new roof — or your subsidence.

Pay for a formal valuation only when the figure must stand up to scrutiny. That means probate, tax, divorce, lease extension, staircasing, or a private sale without marketing. In those cases, instruct an RICS Registered Valuer directly — you can find one through the RICS firms directory.

Questions to ask before booking either

• What decision am I trying to make — price, condition, or both?
• Who will rely on the result — me, a lender, a court, HMRC?
• If it is a valuation: is the valuer an RICS Registered Valuer, and is the report Red Book compliant?
• If it is a survey: which level suits the age, construction and alterations of this building?
• Will the professional actually enter and inspect the property — and for how long?
• Am I assuming the lender’s valuation covers anything for me? (It does not.)

Which situations are lower and higher risk?

Sometimes you need both. A mortgaged purchase brings the lender’s valuation whether you like it or not. The survey is the part you choose. A cash purchase gives you neither by default. Probate followed by a family purchase may need both — a Red Book valuation for the estate, a survey for the buyer.

Valuation vs survey decision framework

Your situation	Sensible choice
Curious what your home is worth right now	Free portal estimates plus two or three agent appraisals — treat as a range
Formal figure needed for probate, tax, matrimonial or legal purposes	Red Book valuation by an RICS Registered Valuer
Buying a modern, conventional home with a mortgage	The lender handles its valuation; you commission a Level 2 Homebuyer Report
Buying an older, extended or altered property — any funding	Level 3 Building Survey
Buying with cash	A survey at the right level, always; add a formal valuation only if you doubt the price
Survey has found defects and you want to renegotiate	Use the report’s evidence — see how to revise your offer after a survey

Survey fees are on our survey costs page, and the pricing mechanics are explained in How much does a building survey cost?

Where Flettons fits in

Flettons is a surveying firm — independent and regulated by RICS — covering London and the South East. We are the condition side of this equation. Level 2 Homebuyer Reports start from £450, Level 3 Building Surveys from £550 and Level 3+ from £850, with drone roof surveys from £399. A summary of significant findings is emailed within 24 hours of every inspection. The Level 3+ also includes a reinstatement valuation — the rebuild cost for buildings insurance. That is a different figure from market value.

We do not sell standalone market valuations. If you need a formal Red Book figure for lending, probate, tax or legal purposes, instruct an RICS Registered Valuer. If you need the true condition of a building before you commit, that is what our surveyors do all day.

How to get the answer you actually need

1. Define the question — are you deciding what to pay, or discovering what you are buying? Price questions need a valuation; property questions need a survey.
2. Route formal figures correctly — probate, tax and legal purposes call for a Red Book valuation from an RICS Registered Valuer.
3. Never substitute the lender’s valuation for a survey — it serves the lender. It may be desktop or drive-by.
4. Choose the survey level to match the building — Level 2 for modern and conventional homes. Level 3 for older, extended or altered ones.
5. Read the 24-hour summary and the full report — note every defect, cause and recommended follow-up.
6. Act on the evidence — renegotiate, budget, commission specialist checks, or walk away informed.

Every Flettons report is built around the same framework: what we found, what it means, what it could cost, and what to do next.

An example from practice

Frequently asked questions

Surveyor’s conclusion

Most valuation vs survey confusion dissolves once you see that the two products serve different clients asking different questions. A valuation, at any level of formality, is about the number. A survey is about the building. The lender’s valuation belongs to the lender, and free estimates belong to the marketing funnel. Only the survey you commission yourself examines the property on your behalf. Buyers need a survey in almost every case, and a formal valuation in a few defined ones. Never let one stand in for the other.

This article is general guidance, not advice on a specific property or transaction. Flettons provides RICS home surveys, not standalone market valuations; valuation matters should be referred to an RICS Registered Valuer. Every RICS survey is a visual, non-invasive inspection subject to the scope and limitations stated in the report.

Why this matters

Damp is one of the few building problems where the person diagnosing it often profits from the cure. A large share of UK damp inspections are provided free by damp-proofing contractors. The survey costs nothing because the business model is the treatment: chemical injection, tanking, replastering. That is not an accusation of dishonesty — it is a description of an incentive. When the diagnosis and the sale sit in the same pair of hands, the diagnosis carries a built-in lean.

The consequences are rarely trivial. Treatment recommended off the back of a free damp survey commonly runs to four figures. If the real cause was a leaking gutter or a bridged damp-proof course, that money treats a symptom and leaves the source untouched. An independent damp survey exists to break that loop. The surveyor sells no remedial work, so the report has nothing to gain from finding “rising damp” where there is none.

What does an independent damp survey involve?

An independent damp survey is a diagnostic exercise, not a sales visit. The surveyor answers three questions. Where is the moisture? Where is it coming from? What should be done about the source? In practice that means:

Moisture profiling. Readings are taken in a pattern across and up the affected walls, not at a single point. The shape of the profile matters. Moisture that falls away sharply above skirting level behaves differently from a patch centred under a window or a stain tracking a ceiling line. The pattern narrows the cause before anything else is considered.

Cause diagnosis. Nearly every damp problem traces to one of four mechanisms: rising damp, penetrating damp, condensation, or a plumbing leak. Each has a different fix. Only one is ever treated with an injected chemical damp-proof course. The surveyor works through ground levels, rainwater goods, pointing, ventilation and visible pipework before reaching a conclusion.

Why misdiagnosis matters. Injecting a chemical DPC into a wall that is actually soaking up water from a cracked downpipe achieves nothing except expense and disruption. Worse, the replastering that accompanies it can mask the symptom for years while the fabric stays wet. Getting the mechanism right first is the entire value of the exercise — the RICS consumer guide to home surveys makes the same point about diagnosis before repair.

How damp misdiagnosis happens

The conflict of interest built into free surveys

A free damp survey is free because the treatment is not. The person inspecting may be paid partly on the work they generate, and the firm’s costs must be recovered from somewhere. Not all damp-proofing companies behave badly — many are members of recognised trade bodies, employ qualified technicians and do honest work. But the structure rewards finding treatable damp, and it rewards the treatments the firm happens to sell. The customer has no easy way to tell a sound recommendation from a convenient one.

One symptom, four causes

A damp patch at the base of a wall can be rising damp. It can also be condensation forming on a cold solid wall, splashback from a blocked gully, raised external ground bridging the DPC, or a weeping pipe joint under the floor. The visible symptom is almost identical in each case. Distinguishing them takes time, method and no stake in the answer.

The default prescription problem

Chemical DPC injection plus waterproof replastering is the standard product of the damp-proofing industry. It is the right answer for a genuine failed damp-proof course — and the wrong answer for everything else. Independent surveyors repeatedly find injected walls where the actual cause was a maintenance defect: a slipped tile, a failed gutter joint, cement render trapping moisture in a solid wall. The fix the building needed cost a fraction of the treatment it received.

Meters and salts can mislead

Handheld moisture meters measure electrical conductance, not water. Hygroscopic salts left by old damp, foil-backed plasterboard and some modern finishes all read “wet” on a meter held against a dry wall. High readings alone prove nothing. An independent damp survey treats meter readings as indicative evidence to be profiled and interpreted — never as a diagnosis in themselves.

Choosing a damp surveyor: what to ask

• Do you, or any connected company, sell or arrange damp treatment? (The only acceptable answer is no.)
• Are you regulated by RICS, and who — by name — will inspect?
• How will you distinguish rising damp, penetrating damp, condensation and plumbing leaks?
• Will the report state the cause, not just recommend “specialist treatment”?
• What are the limitations — what can’t a visual, non-invasive inspection confirm?
• Can I speak to the surveyor directly after the report?

Documents worth gathering first

• Any previous damp reports, quotes or treatment guarantees for the property
• Photographs of the problem over time, ideally dated across seasons
• Records of roof, gutter or plumbing repairs already carried out
• For purchases: the seller’s answers on damp in the property information form

When do you need an independent damp survey?

There is also a scope question. A damp problem noticed while buying rarely needs a standalone specialist visit first. Damp assessment is already part of every RICS home survey. A Level 3 inspection analyses cause, consequence and remedy across the whole building — not just the wall you noticed.

Decision framework

Your situation	Sensible choice
Buying a modern, conventional home; damp is one concern among many	Level 2 Homebuyer Report — damp assessment included
Buying an older, period, extended or altered property	Level 3 Building Survey — full cause-and-effect damp analysis within the survey
Existing home, unexplained or recurring damp	Independent damp inspection by a surveyor regulated by RICS — never the treatment seller
Free survey quotes expensive treatment	Independent second opinion before signing anything
Listed or historic building fabric	Independent surveyor experienced in traditional, breathable construction
Mortgage retention or formal dispute	Independent written report from a RICS-regulated firm — see our survey prices

How Flettons approaches damp — independent and regulated by RICS

Our surveyors are independent and regulated by RICS. Flettons sells no damp-proofing, no tanking and no remedial treatments of any kind — so the report has no reason to find work. Damp assessment is built into every survey level. A Level 2 Homebuyer Report records visible damp and moisture indications with condition ratings. A Level 3 Building Survey goes further: it profiles the moisture, identifies the likely mechanism, explains the consequences, and sets out what to do about the source. For what each level costs and why, see how much a building survey costs.

The honest limitations apply, and we state them plainly. Every survey is visual and non-invasive: we do not open up walls or lift fixed floor coverings. Moisture readings are indicative, not absolute. Where genuine uncertainty remains — a suspected leak below a solid floor, timber concealed behind finishes — the report says so and directs targeted further investigation, rather than papering over the gap.

What happens if the survey finds damp?

1. Establish the mechanism — rising, penetrating, condensation or plumbing. Everything else depends on this.
2. Trace the source — the defective gutter, bridged DPC, cold wall or leaking joint feeding the moisture.
3. Understand the consequences — timber decay risk, plaster damage, health implications and what worsens if nothing is done.
4. Fix the source first — maintenance and repair before any treatment; much damp resolves without chemicals.
5. Cost the works with real quotations — from contractors chosen for the actual repair, not a pre-packaged treatment.
6. Negotiate or proceed on evidence — for purchases, a diagnosed and costed defect is fair grounds for renegotiation.

This is the framework every Flettons report is built around: what we found, what it means, what it could cost, and what to do next.

An example from practice

Frequently asked questions

Surveyor’s conclusion

Damp is a diagnosis problem long before it is a treatment problem. The free-survey route puts the diagnosis in the hands of the party selling the cure, and the predictable result is treatment bias — walls injected while gutters keep leaking. An independent damp survey costs money precisely because impartiality is the product. For homeowners, commission it before signing any treatment contract. For buyers, damp assessment already sits inside every RICS survey level; for period, altered or visibly damp buildings, choose Level 3 and get the mechanism, the consequences and the remedy analysed together. Fix causes, not symptoms — and never let the person quoting for the cure be the only one who has diagnosed the disease.

This article is general guidance, not advice on a specific property, firm or contract. Every RICS home survey is a visual, non-invasive inspection subject to the scope, access and limitations stated in the report; moisture readings are indicative only. Comments on the damp-proofing industry describe structural incentives, not the conduct of any individual company — many firms provide competent, honest work.