Residential density is identified by a series of numbers within the residential zone on a Council’s town planning scheme map. These numbers are derived from the State Government document called the Residential Design Codes of Western Australia, or the R-Codes for short. Please find the link to the document below which explains in general terms what can be done on each zoning.

Residential Design Codes Western Australia 2015 PDF file

Note: Individual Councils are able to alter many aspects of the R-Codes in Local Planning Policies with the exception of those relating to minimum and average lot sizes for subdivision purposes.