Building Survey
The comprehensive option — a RICS Home Survey Standard Level 3 style structural inspection for older, extended, unusual or poor-condition property, carried out by qualified residential surveyors. Every significant defect described, its likely cause explained, and the realistic repair options set out.
What it is
A full structural survey, in plain English
A building survey is the deepest of the standard home survey formats. The surveyor examines the structure and fabric element by element — roof coverings and the roof structure from within the roof space, chimneys, external and internal walls, floors, joinery, evidence of damp, movement and timber decay, and the visible parts of the drainage, heating and electrical installations.
The difference from lighter reports is analysis. Cracking is not just noted; the report considers whether it is historic and settled or progressive and worth monitoring. Damp is traced to a likely mechanism — condensation, penetrating or rising — because the correct repair depends entirely on the cause. For each significant defect you get a description, the probable cause, and the repair options with a sense of scale, so you can decide what to live with, what to fix, and what to price into your offer.
Can't see the roof from the street? We can add drone roof imagery to the inspection — high-resolution photographs of coverings, flashings, valleys and chimney stacks that no ladder or ground-level view can match.
Where a Level 3 report earns its fee
- Victorian and Edwardian houses, and older period property
- Homes that have been extended, converted or repeatedly altered
- Non-standard or unusual construction types
- Property that is visibly tired, neglected or partly renovated
- Any purchase where major works are already the plan
Level 2 vs Level 3
How it differs from a homebuyers survey
| Aspect | Homebuyers survey (Level 2) | Building survey (Level 3) |
|---|---|---|
| Best suited to | Conventional homes in reasonable condition | Older, extended, unusual or poor-condition buildings |
| Approach | Rates each visible element with traffic-light condition ratings | Investigates each defect — description, likely cause, repair options |
| Structure and fabric | Visible elements inspected and rated | Examined in detail, including the roof space and exposed structure |
| Damp and movement | Flagged where visible | Traced to a likely cause, with the appropriate remedy explained |
| Renovation planning | Limited use | Designed for it — a baseline for extension and conversion decisions |
| Time on site and report depth | Shorter visit, concise report | Longer, more thorough inspection and a substantially more detailed report |
If the property is conventional, post-war and well kept, the cheaper homebuyers survey may honestly be all you need — send us the listing and we'll tell you which level fits before you commit to either.
Projects
The first document of any renovation
If you are buying to renovate, extend or convert, commission the building survey before the architect starts drawing. It establishes which walls carry load, where the structure has already been altered, what condition the roof timbers are in, and which defects must be dealt with before anything decorative happens. Designing around known facts is cheap; redesigning around discoveries is not.
The survey also dovetails with the compliance work a project needs later. A conversion will need SAP calculations for conversions to satisfy Building Regulations, and upgrades to walls, floors and roofs are specified against U-value calculations — both are easier and more accurate when the construction build-ups have already been recorded during the survey.
As with every report in our home and building surveys range, the survey ends with a phone debrief: what genuinely matters, in what order, and what it means for your plans. Get a fixed quote with the address or listing link.
What every building survey includes
- Detailed inspection of structure, fabric, roof space and visible services
- Each significant defect described with its likely cause
- Repair options explained, not just symptoms listed
- Urgent items flagged by phone ahead of the written report
- Plain-English debrief call once you've read it
Common questions
Building survey questions, answered
How much does a building survey cost?
It depends on the size, age, construction and condition of the property — a large Victorian house with several extensions takes far longer to inspect than a compact cottage. Send the address or the listing link via the quote form or WhatsApp and we'll reply with a fixed price.
How is a building survey different from a homebuyers survey?
A homebuyers survey rates the visible condition of each element with traffic-light ratings and suits conventional homes in reasonable order. A building survey goes further: it examines the structure and fabric in detail, explains what is causing each defect, and sets out the realistic repair options. It is the right choice for older, extended, unusual or visibly tired buildings.
Do you inspect the roof?
Yes — the roof space is inspected internally wherever there is safe access, and the coverings, chimneys and rainwater goods are examined from ground level and available vantage points. Where a roof cannot be seen properly from the ground, we can add drone roof imagery so the report is based on what is actually up there rather than assumption.
Should I get a building survey before renovating or extending?
Yes. A Level 3 style report gives you a defect-by-defect baseline of the building before designs are drawn — which walls are doing what, where the damp is coming from, what the roof structure will and won't take. Finding that out at survey stage costs a fraction of finding it out mid-project.
How long does a building survey take?
Longer than a Level 2 inspection — the surveyor is investigating rather than rating, so time on site depends on the size, age and condition of the building. We confirm the expected inspection time and report turnaround when we confirm your booking, and we flag anything urgent by phone rather than making you wait for the written report.