A structural engineer’s report is the document you are left with after an engineer assesses a building or a problem. It records what they found, what it means, and what to do about it — in writing you can act on, show to a builder, or hand to a buyer. Here is what one contains and how to read it.
What a structural report is — and when you get one
You typically commission a report when there is a specific concern (a crack, sagging, damp-related movement), when you are buying a property, or when you need a structural opinion for a renovation or an approval. The engineer inspects, forms a judgement, and sets it down formally so it can be relied upon.
What’s inside a structural report
- Scope and limitations — what was inspected, what was not, and any access constraints.
- Observations — what the engineer actually saw, often with photographs and the location, width and direction of any cracks or movement.
- Assessment — the engineer’s interpretation: the likely cause, whether it is structural, and how serious it is.
- Recommendations — what to do, in what order, and how urgently, from “monitor” to “repair” to “investigate further”.
- Calculations and drawings — where the report includes design (for a beam or an opening), the supporting numbers and sketches.
The common types of report
- Condition / inspection report — an assessment of a defect or general structural condition.
- Pre-purchase structural report — focused on structural risk for a buyer.
- Design report — calculations and drawings for new or altered structure, such as a beam over a new opening.
- Specific defect report — a deep look at one problem, such as subsidence or a failing element.
How to read it
Go straight to the assessment and recommendations. A good report tells you three things clearly: is this structural, how serious is it, and what should I do next. Watch for language about urgency (“immediate”, “monitor”, “no action required”) and any recommendation to investigate further — that usually means the cause could not be confirmed from a visual inspection alone. If a crack is involved, our guide to types of concrete cracks helps you understand the findings.
What a structural report is not
It is not a full building survey. A structural report concentrates on the structure — the parts that carry load — and will not cover finishes, services or general condition the way a comprehensive survey does. If you need both, say so up front.
Frequently asked questions
How long does a structural report take?
The inspection is often an hour or two; the written report usually follows within days, depending on complexity.
Is a structural report the same as a survey?
No. A survey looks at the whole property; a structural report focuses specifically on the structure and any structural concern.
What a structural report costs
Cost depends on the scope. A focused inspection and report on a single concern is at the lower end; a detailed investigation, monitoring over time, or full design with calculations costs more. Always agree the scope and fee in writing first, and be clear about whether the report includes design and drawings or is an assessment only. Whatever the figure, it is modest against the cost of acting on a structural problem the wrong way — or missing one.
What to do after you get the report
Read the recommendations and act in the order the engineer sets out. If repairs are advised, get quotes from contractors experienced in that work, and share the report so they price the right thing. If the advice is to monitor, do so methodically — dated photographs and simple measurements across any crack. And if the report recommends further investigation, treat that as a clear signal that the cause could not be confirmed by eye alone, and worth resolving before you build over it.
Pre-purchase structural reports
One of the most valuable times to commission a report is before buying. If a home shows cracks, past alterations or signs of movement, a pre-purchase structural report tells you what you would be taking on — and whether the asking price reflects it. It can be powerful in negotiation: a clear engineering opinion lets you ask for repairs, a price reduction, or simply walk away with confidence. The fee is trivial against the cost of inheriting a structural problem unknowingly.
Red flags to look for in a report
When you read a structural report, a few things deserve full attention: any mention of ongoing or progressive movement; recommendations to investigate further (a sign the cause could not be confirmed visually); references to subsidence, heave or foundation problems; and anything flagged as needing immediate attention. None is necessarily a deal-breaker, but each changes the picture and usually the budget.
Turning a report into action
A report is only useful if you act on it sensibly. Tackle the recommendations in the order and urgency the engineer sets out. For repairs, get quotes from contractors experienced in that work and share the report so they price the right scope. For “monitor” advice, keep dated records. And if it recommends further investigation, resolve that before building over the area — it is the engineer’s way of saying the answer is not yet certain.
Report, survey or valuation?
These are easy to confuse. A valuation estimates worth; a general building survey reviews overall condition; a structural report focuses specifically on the structure and any structural concern, often in more depth. If your worry is cracks, movement or load-bearing changes, the structural report is the one you want — and you can ask for it alongside a broader survey if you need both.
How long does a structural report stay valid?
A structural report is a snapshot of a building’s condition on the day it was inspected. There is no fixed expiry, but the older it gets the less it tells you — especially if cracking was described as active or further investigation was recommended. For a purchase, a recent report is far more reassuring than one a few years old. If significant time has passed, or the building has visibly changed, it is worth refreshing rather than relying on an out-of-date assessment.
Related reading
Need a structural inspection and report? See our structural engineering consultancy, or start with what a structural engineer does.
