New South Wales Granny Flat Rules

In New South Wales, the Building Code of Australia (BCA) regulates the construction of granny flats. According to the BCA, a granny flat is considered a separate dwelling if it has:

  • A ceiling height of at least 2.4 meters
  • Separate access from the primary dwelling
  • Internal divisions that meet specific standards

Shared Walls and Boundaries

When sharing walls and boundaries between the primary dwelling and the granny flat, the following rules apply:

  • The shared wall must be constructed to withstand a wind load equivalent to 40% of the wind load for the primary dwelling.
  • The boundary between the dwellings must be marked with clear signs indicating which dwelling is the primary dwelling and which is the granny flat.

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["New South Wales", "granny flat rules", "Building Code of Australia"]