Regulations and Building Standards Act, the point is to determine the degree of freedom of the house and renovation of the building structure. The semi-fire zone or fire zone has only sash replacement can meet the performance standards for fire protection. However, in the case of the wooden buildings can be relatively easy. Weight of steel buildings is difficult because the beams of steel frame is paramount. underwritingV only requires wiring to the outlet if it is supported. Is to create a basement. Requires consideration of the ventilation space and descend the stairs to the basement. However, all-electric home to a house is easy.