The number of fire extinguishers needed for a commercial property depends on various factors, including, The size and layout of the room – In Australia, there is no general rule on the usage of fire extinguishers distances. However, the number of fire extinguishers used depends on the size and layout of the property. Due to the vast number of building configurations possible, it’s recommended to employ a sensible approach to decide on the number of fire extinguishers needed for your property. Fire hazard Level – In Australia, the fire hazard levels are classified into the following: Class A- fires involving carbonaceous solids Class B- fire involving flammable liquids Class C- fire involving flammable gases Class D- fires involving combustible metals Class E- fires involving energised electrical equipment Class F- fires involving cooking oil and fats Based on the fire hazard level of your property, the number of fire extinguishers you buy may differ. For instance, if your business comes under class A, the number of fire extinguishers you need for fire protection in Sydney will be greater than those for class F type of buildings.