An asbestos survey is a comprehensive inspection of a building or structure to identify any asbestos-containing materials (ACMs) and assess their condition, quantity, and location. There are two main types of asbestos surveys:

1. Management Survey - This survey is designed to locate and assess the condition of ACMs that are likely to be disturbed during normal occupancy, maintenance, or minor refurbishment. It involves sampling and analysis of the suspect materials to determine if they contain asbestos.

2. Refurbishment/Demolition Survey - This survey is more intrusive and is required before any refurbishment or demolition work takes place. It aims to locate all the ACMs within the building or structure, including those that may be hidden or inaccessible. It involves destructive inspection and sampling of all suspect materials.

Both types of surveys should be carried out by a qualified and experienced asbestos surveyor, who will provide a detailed report that includes a comprehensive asbestos register, risk assessment, and recommendations for management or removal of the ACMs.