This is the most common piece of confusion we deal with, and it is not the public's fault. The names overlap, the industry uses them loosely, and the one term almost everybody types into Google - 'structural survey' - is a product that RICS formally retired years ago. Here is what each of these things actually is.
The short version
| RICS Level 2 (homebuyer) | RICS Level 3 (building survey) | Structural survey / engineer's report | |
|---|---|---|---|
| Carried out by | Chartered surveyor | Chartered surveyor | Structural engineer |
| Covers | Whole property, condition-rated | Whole property, in detail | The load-bearing structure only |
| Depth on structure | Flags concerns, refers on | Describes and refers on | Diagnoses cause and consequence |
| Typical output | Traffic-light condition ratings | Long narrative report | Engineering opinion and recommendation |
| Best for | Conventional, modern-ish property | Older, altered or unusual property | A specific structural question |
| Answers 'is this crack serious?' | No - refers you on | Usually not - refers you on | Yes. That is the whole point |
The terminology trap, and why it exists
RICS reorganised residential surveys into a three-level standard: Level 1 is a basic condition report, Level 2 is what almost everyone still calls the homebuyer survey, and Level 3 is the detailed building survey. The phrase 'structural survey' was dropped as a product name in that process, because it was misleading - it was never an engineer's structural analysis, and calling it one set the wrong expectation.
The public kept using the old term anyway, in very large numbers. So today 'structural survey' means two different things depending on who is saying it: to a surveyor it is a retired name for a Level 3, and to an engineer it is an inspection of the structure. When you ask for one, be clear which you mean - or describe the problem instead of naming a product, which is what we would rather you did.
RICS Level 2 - the homebuyer report
A general condition survey of the whole property by a chartered surveyor, presented as condition ratings against each element - roof, walls, services, joinery, damp and so on. It is designed for a reasonably conventional property in reasonable condition, and it is the most commonly purchased survey in the country.
On structure, a Level 2 is a screening tool. It will notice cracking, note it, rate it, and - if the surveyor is at all concerned - tell you to obtain advice from a structural engineer. It is not designed to establish why a building has moved, and the surveyor is not the wrong person for the job so much as doing a different job.
RICS Level 3 - the building survey
The detailed version: a much longer narrative report, appropriate for older, altered, extended, listed or unusual properties, and for anything you intend to work on. It goes considerably further into construction, defects and likely maintenance, and it is worth the extra money on a Victorian terrace or a stone-built property.
It is still a surveyor's condition assessment rather than an engineering analysis. A good Level 3 will describe cracking precisely and set out what it might indicate. On a live structural question it will normally still recommend a structural engineer, because the surveyor's professional judgement is that the question belongs to another discipline.
A structural survey - the engineer's inspection
An engineer's inspection of the load-bearing fabric: walls, floors, roof structure, chimneys, visible foundation evidence and any structural alterations. It does not grade the kitchen, comment on the boiler or rate the decoration, and it should not - it exists to answer a structural question.
The output is an opinion with reasoning behind it: this is what has happened, this is why, this is whether it is still happening, this is what to do about it. It is what a mortgage valuer, a solicitor, an insurer or a surveyor is asking for when they use the phrase 'refer to a structural engineer', and it is the document that unsticks a stalled purchase.
So which do you actually need?
- Buying a conventional modern-ish house with nothing obviously wrong - a Level 2 is usually proportionate.
- Buying anything Victorian, stone-built, heavily altered, extended or unusual - a Level 3 is the better use of the money.
- You already know what the problem is - a crack, a bouncing floor, a leaning wall, a removed chimney breast - go straight to a structural engineer. A general survey will only tell you to do so, and you will have paid twice.
- Your survey has come back saying 'consult a structural engineer' - that is the referral, and a structural inspection is the next step.
- You are planning work rather than buying - you need an engineer for the design regardless, and often no survey at all.
The two are not alternatives so much as different instruments. Plenty of purchases end up using both: a Level 3 to understand the whole property, and an engineer to answer the one thing the Level 3 flagged.
What each costs
Published comparison guides put a Level 3 building survey somewhere in the region of £600 to £1,500 depending on property size and location, with one national comparison service quoting a UK average of about £656 and a Yorkshire and Humber average nearer £585. Level 2 reports sit below that.
Our own structural survey and report is a fixed £580 + VAT, with the report delivered within 10 working days of the inspection, guaranteed. We publish the number because roughly half of this market does not, which is an odd way to treat someone who has just found a crack in their wall and wants to know what it will cost to find out.
One thing worth knowing before you commission anything
A surveyor's report and an engineer's report are written for different readers and carry different weight in different situations. If a lender, insurer or solicitor has asked for something specific, get the exact wording of what they want before you buy a survey - it is a two-minute question that regularly saves several hundred pounds.
Frequently asked questions
Is a structural survey the same as a Level 3 survey?
No, although the names get used as if they were. A Level 3 is a chartered surveyor's detailed condition survey of the whole property. A structural survey is a structural engineer's inspection of the load-bearing structure specifically. RICS retired 'structural survey' as a product name precisely because the two were being confused.
Will a homebuyer survey pick up structural problems?
It will usually notice the symptoms - cracking, sloping floors, distortion - and rate them. What it will not do is establish the cause or tell you whether the movement is continuing. At that point it will recommend you consult a structural engineer, which is the correct professional response rather than a failing of the survey.
Do I need both a survey and an engineer's report?
Often, yes, and that is not duplication. The survey covers the whole property; the engineer answers the specific structural question the survey raised. If you already know the structural question before you start, you can sometimes go straight to the engineer and skip a step.
Does a structural survey cover damp?
Not as its subject. An engineer will note damp where it is structurally relevant - because it is rotting a bearing timber, corroding wall ties or driving movement - but a general damp and timber assessment is a surveyor's or a damp specialist's work. If damp is your main concern, say so, and we will tell you honestly whether we are the right people.
Which one does my mortgage lender want?
If the lender's valuation has been referred, they almost always want a structural engineer's report on the specific defect, not another general survey. Ask them for the exact wording of the requirement and send it to us - the report can then be written to answer it directly.