RICS Level 3 ( Full Building Survey)

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A Building Survey, sometimes referred to as a Level 3 or Full Structural Survey, is the most detailed type of inspection available.

It’s particularly suitable for older or larger properties, including listed buildings, as well as homes that may be in poorer condition or have been altered over time. If a property has unusual features or you have any concerns about its condition, this type of survey offers a more thorough understanding.

It’s also a sensible option if you’re planning significant works, such as extensions or major renovations, as it gives you a clearer picture of the property before you commit, helping to reduce the risk of unexpected issues later on.

The main difference between a Level 2 and a Level 3 survey lies in the depth of inspection and detail provided. A Level 2 survey offers a general overview of the property’s condition, highlighting significant issues but without going into extensive detail. In contrast, a Level 3 survey—based on the Home Survey Standard published by the Royal Institution of Chartered Surveyors—provides a far more comprehensive and detailed assessment. It includes a thorough inspection of the property’s structure and construction, an explanation of defects and their likely causes, and clear advice on necessary repairs, maintenance, and the implications of any issues identified. The report is information-rich, typically including annotated photographs and staged advice to help you prioritise works and plan next steps. It may also comment on the condition of concealed areas where possible, outline risks, and provide guidance on future works, making it particularly suitable for older, altered, or more complex properties.