An asbestos survey is a systematic inspection of a building, designed to identify and assess any ACMs that may be present. Surveys are classified into two main types, which determine the level of intrusion and sampling required:

• Management Survey: A non-intrusive survey that locates and assesses the condition of ACMs that are likely to be damaged or disturbed during normal occupancy or maintenance. The survey involves sampling of materials suspected to contain asbestos, although not all samples may be tested.
• Refurbishment/Demolition Survey: A more intrusive survey that is required when a building is to undergo major refurbishment or demolition. The survey involves a thorough inspection of all parts of the building, including concealed spaces such as ceilings and voids, and the sampling and analysis of all suspect ACMs.

Both types of survey are carried out in accordance with the guidelines set out in the Health and Safety Executive's (HSE) document HSG264: Asbestos: The Survey Guide.