The Level 3 survey: for when you need to know why, not just what.
Our Most Comprehensive House Survey for Peace of Mind When Buying Your New Home
The same house, opened up further.
Everything a Level 2 covers is still covered. What Level 3 adds is drawn in green: the places we go into rather than look at.
What the extra buys.
The trail gets followed to its source
RICS puts it plainly: at Level 3 a suspected problem is followed "to a greater extent" than at Level 2. A damp reading in a bedroom wall is a symptom, not an answer — so we keep going until the trail runs out. Into the loft above it, along the gutter outside it, under the floor beside it. The report names the cause, not just the stain.
Cause, effect, and the cost of leaving it
A Level 2 rates what it finds. A Level 3 explains it: why it has happened, what it will do if nothing is done, and what putting it right involves. That is the difference between knowing a wall is damp and knowing whether you are looking at a blocked gutter or a failed damp-proof course.
General descriptions become specific ones
A Level 2 describes the building in general terms, which is what it is for. A Level 3 describes what is actually in front of it — this roof slope, these window frames, this section of wall — in the detail you need to get a price for the work or go back to the seller with it.
We get inside what a Level 2 sees from the edge
Loft insulation lifted at the corners to see the type, the depth and what it is sitting on. The under-floor space entered where there is access, rather than looked into: joists, ventilation, and the damp a floor covering hides.
Every window tried, and the drains watched running
A Level 2 opens a sample of windows and lifts the drain covers. A Level 3 attempts every window that opens, and watches the drains in normal use — so the question becomes what the system does with water, not what an empty chamber looks like.
Repair costings on request
Budget figures for the significant items, so you can go back to the seller with costs attached.
What are RICS Condition Ratings?
Condition Rating 1
Indicates that no repairs are required. The property must be maintained in the normal way.
Condition Rating 2
Highlights issues that require fixing or replacement but are not considered urgent or severe.
Condition Rating 3
Identifies defects requiring urgent repair, replacement, or immediate investigation.
Every element on the drawing above gets one of these three. Nothing is left unrated.
When Should You Choose A Level 3 Building Survey?
A Level 3 fits when
- Older or Worn PropertiesA Level 3 Survey is suited to homes that show age or deterioration and need a deeper assessment of condition and potential defects.
- Extended or Non-Standard HomesThis option is ideal for properties that have been altered or built using complex or unusual construction methods.
- Buyers Needing Maximum DetailChoose a Level 3 Survey when you want the most comprehensive inspection, including analysis of defects and their likely causes.
- Homes with Possible Hidden IssuesA Level 3 Survey is recommended when you suspect structural concerns or concealed problems and want clear advice on risks and repairs.
We will tell you a Level 2 is enough if
- It is a modern estate house in good orderPost-1980, conventional construction, nothing visibly wrong: the extra depth has little to find.
- Nothing has been alteredNo removed walls, no loft conversion, no extension without sign-off.
- You are buying a flatMost of the structure is not yours to repair, and the lease matters more than the survey level.
- The budget is better spent elsewhereA Level 2 plus a specialist damp or timber report often beats a Level 3 on its own.
What a Level 3 still does not do
- Foundations are not excavated or exposed
- Electrics, gas and plumbing are not tested
- Finishes are not removed to look behind them
- Anything sealed, boarded or inaccessible stays that way
No residential survey opens up the building. Where that is what you need, we will say so.
What is a Level 3 survey?
A RICS Home Survey Level 3 is the most detailed residential survey RICS offers. The inspection goes further — every window tried rather than a sample, loft insulation lifted to see what is beneath it, the under-floor space entered where there is access, the drains watched while they run — but the real difference is what happens when something looks wrong. A Level 2 describes the property in general terms and rates what it finds. A Level 3 follows the trail to its source, then sets out the cause, what it will do if it is left alone, and what putting it right involves. It was previously called the Building Survey, and before that the full structural survey.
- Who it suits
- Older, larger, extended or altered properties, and anything already showing signs of movement or damp.
- What you get
- The same condition ratings, plus the cause behind each finding and, on request, budget repair figures.
- How long it takes on site
- Usually three to six hours depending on size and how much has been altered, then the report follows within a few working days.
- What it is not
- It is still non-intrusive. Foundations are not excavated and finishes are not removed to look behind them.
How much does a Level 3 survey cost?
The range above is a guide. Your fixed price is confirmed in writing before you instruct us and does not change afterwards. If a Level 2 would do the job for your property, we will say so rather than quote you for this.
What moves the price
- Size and number of rooms
- The main driver, and it bites harder at Level 3 because more of the building is opened up and each element is written up in full.
- Age and how much has been altered
- A Victorian house with a cellar, a loft conversion and two extensions is several hours more work than an unaltered 1960s semi.
- What is already wrong
- Where there is visible movement or damp, the inspection goes further and the report explains cause and remedy, which takes longer.
- Repair costings
- Budget figures for the significant items, quoted as an add-on rather than assumed.
What the fee covers
- A longer inspection, entering the roof space and lifting floors where they lift
- The full written report, with photographs and the reasoning behind each finding
- Answers to any questions the report raises
- VAT
What the deeper look finds.
Every one of these is a photograph from a survey we carried out, with the finding it supported. Not a stock library, and not an illustration.
Electricity
Services
Roof and Chimney Defects
Walls
Services
Structural Movement and Wall RepairsFrom enquiry to report, without the chasing.
Tell us the property
Address, type and roughly when you need it. About two minutes.
Get a fixed price in writing
A firm figure within the hour in office hours. Not an estimate, not a range.
Confirm and sign
We send the terms of engagement to review and sign electronically.
We arrange access
We deal directly with the seller, agent or keyholder to book the inspection.
The inspection
A local RICS surveyor attends and inspects the property.
Your report, and answers
You get the report, and anything in it you want explaining, we explain.
Using A Level 3 Building Survey To Re-Negotiate The Sale Price
If significant defects are identified during a Level 3 Building Survey and the sale is still subject to contract, the findings can provide strong justification for a fair and evidence based price reduction. The detailed analysis offered in a Level 3 report, carried out by an RICS accredited surveyor, adds credibility and support to your negotiation position.
Questions we get asked.
Will a Level 3 Survey identify all issues within the property?
It identifies visible and accessible defects at the time of inspection and includes a more detailed analysis of their likely causes and implications. Areas that are hidden, unsafe or sealed cannot be opened without the owner’s consent. If hidden issues are suspected, further investigation will be advised.
How long does a Level 3 Building Survey usually take to complete?
A Level 3 inspection typically takes several hours due to the greater depth of assessment. The exact time depends on the size, age and complexity of the property.
Can the findings of a Level 3 Survey support a price negotiation?
Yes. A Level 3 report provides detailed evidence about defects and repair requirements, which can support a fair and well justified renegotiation while the sale is still subject to contract.
Can I attend the Level 3 inspection?
No. In line with RICS guidance, surveyors must be able to work without interruption to carry out a thorough and methodical inspection. Attendance can distract from the process, so clients are not permitted to accompany the surveyor. You can, however, discuss the findings afterwards.
Is a Level 3 Survey the same as a mortgage valuation?
No. A mortgage valuation is a brief assessment carried out for your lender. A Level 3 Survey is an independent and detailed examination of the property’s condition, structure and risks for your own use as the buyer.
Do you provide repair estimates in a Level 3 report?
No. We do not provide formal repair cost estimates. However, once you have read your report, we are happy to discuss the general severity of findings by phone so you can approach contractors for quotations.
Will the surveyor test the services such as electrics, heating or plumbing?
These systems are visually assessed only. A sample of lights and extractor fans is operated, but specialist testing of electrics, gas or plumbing must be completed by qualified engineers if recommended.
What should I do once I receive the Level 3 report?
You can review the findings at your own pace and contact us if you need clarification. If the report advises specialist checks, it is best to arrange these before committing to the purchase.
Is choosing a Level 3 Survey worthwhile?
Yes. It offers the most comprehensive understanding of the property’s condition and provides clarity on risks, defects and potential future maintenance demands.
Is a Level 3 survey the same as a structural survey?
In practice yes. "Structural survey" is the older informal name for what RICS now calls a Home Survey Level 3, and it is normally what people mean by the phrase. It is not the same as a structural engineer’s report, which is a separate, targeted piece of work commissioned when a specific defect needs calculations or monitoring. A Level 3 will tell you whether that step is warranted.
Does a Level 3 survey check for asbestos?
Not as a specialist asbestos survey. Where materials that commonly contain asbestos are visible, such as certain garage roofs, textured ceiling coatings, some soffits and flue components, the report says so and recommends testing before any work disturbs them. A management or refurbishment asbestos survey is a separate instruction under different regulations.
Does a Level 3 survey check for subsidence?
It looks for the visible evidence and reports it: crack patterns, distortion, doors and windows out of square, and the trees, drains and ground conditions that tend to cause it. Confirming active subsidence normally needs a structural engineer and monitoring over a period of months. The survey tells you whether that is warranted, which is usually the decision you need before exchange.
Does a Level 3 survey check the boiler and electrics?
They are inspected visually, not tested. The surveyor records what is installed, its apparent age and condition and any visible cause for concern, then recommends a test by a Gas Safe engineer or a registered electrician where one is warranted. No residential survey level includes testing the services.
Does a Level 3 survey include a valuation?
Not as standard. A Level 3 is a condition report. We can provide a market valuation alongside it where you want one, quoted separately, and a valuation for probate, Help to Buy or shared ownership is a different instruction again.
How long does a Level 3 survey take?
Usually three to six hours on site depending on the size of the property and how much has been altered, with the written report following within a few working days. We tell you the expected date when you instruct us rather than after the inspection.
RICS Home Survey — Level 3 near you.
Every area below is staffed by RICS surveyors who work there. If we cannot cover you properly, this site will say so rather than take the booking.
Our other services.
RICS Home Survey — Level 2
A conventional house or flat, built this century or last, in reasonable order
RICS Residential Valuation
You need a figure rather than a condition report, for probate, Help to Buy or shared ownership
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