Minimum level of completion is a shell house with doors and windows for socialized housing, and a complete house based on submitted specifications for economic housing
Winding/circular stairs may be used if the required tread dimension is provided at a point not more than 300mm from the narrow end, with a minimum tread of 150mm at any point
Firewalls are required whenever a dwelling abuts on a property line, at least 150mm or 6 inches thick with 300mm extensions above roof and building edges, and ceilings should be compartmentalized