Compare documents with reality
Old drawings describe a design or previous condition. Later changes may be missing. An assessment therefore combines available records with information about the current situation. Its depth depends on the question and the reliability of the information.
Define the investigation
A visual survey, material testing and recalculation each provide different information. Agree which elements will be inspected, what is inaccessible and which uncertainties remain. A general report without clear investigation limits is easy to misinterpret.
Use conclusions correctly
A conclusion applies to the elements and conditions described. It is not an unlimited guarantee for all future renovations. Changed loads or concealed damage may require reassessment. Keep the supporting documents with the conclusion.
Practical checklist
- Define the investigation question
- Share the renovation history
- Record accessible elements
- Have limitations recorded explicitly
A crack cannot be reliably diagnosed from a photo without further context.
Preparing your own project
Would you like this assessed for your home? See our information about renovation. It explains which information is relevant to that brief. The project check helps you prepare your enquiry.
Unsure about a term? The structural glossary provides plain-language explanations and technical context. To understand how the documents are organised, explore our fictional example project .
Editorial guidance • updated 2 October 2026. General information, not a project-specific assessment.