A construction project is considered a demolition when it involves the complete or partial demolishing of a structure, with pre-planned and controlled methods and procedures conducted by demolition contractors.

While a regular house demolition will probably not require any more advanced techniques or machinery than a bulldozer, excavator or maybe a crane, there may be times when building demolition requires the use of explosives.

Safe Work Australia has a Code of Practice for demolition work that should be reviewed carefully before conducting a demolition project. Hazards must be minimised or eliminated where it is practical to do so. A competent person experienced in the controlled application of explosives for the purpose of demolition should be consulted before deciding to use explosives. Explosives must never be used to induce the collapse of a structure unless approved by the regulatory authority. Most demolition contractors will want to avoid the use of explosives where possible.

In some cases the use of explosives is the safest and most practical way to go about demolishing the building. If there is a requirement for explosives, then there must be a licensed competent worker in charge of the use of explosives. This person must develop a blast management plan and must take full responsibility for any and all aspects of the use of explosives in the construction project.

Check the regulations in your state or territory with regards to the licensing and procedures that concern the use of explosives in demolition work. For further information, refer to AS 260 The demolition of structures and AS 2187.2: Explosives – storage and use.