Asset Protection Zones (APZs) are areas around buildings that are managed to reduce the amount of vegetation available to fuel a bush fire. In NSW, the required APZ can help reduce the Bush Fire Attack Level (BAL) by increasing the separation between a building and bush fire hazards.
In simple terms:
- Larger or routinely maintained APZ → greater separation from bush fire → potentially a lower BAL.
- Smaller APZ or vegetation close to the building → greater bush fire exposure → potentially higher BAL.
The BAL is determined based on factors including vegetation type, slope, distance from the vegetation, and the relevant fire danger conditions.
An APZ does not automatically guarantee a particular BAL; the BAL must be assessed using the applicable NSW bush-fire planning requirements.
So, APZs are a way of reducing the bush fire risk to a building, while the BAL indicates the level of bush fire exposure that the building must be designed to withstand.