Owner Builder

Anyone who carries out ‘builder work’ valued over $20,000 must be a registered builder or an approved owner-builder before applying to the local government for a building permit. However, there are a number of exemptions where registration is not required. Please refer to 'Do I need to be a registered builder?' publication from the Department of Mines, Industry Regulation and Safety.

Owner-builder work consists of the following:

  • Class 1a (i) building – a single dwelling, being a detached house. This includes an extension to a house or a habitable dwelling on the same property but separate to the main house such as a granny flat;
  • Class 10 building – being a non-habitable building such as a private garage, carport, shed or the like; or
  • Small commercial building – being a one or two-storey building with a floor space of less than 500m2 that is not a detached house, Class 10 building or farm building

Under the Building Services (Registration) Act 2011, owner-builders are required to obtain approval from the Building Services Board, administered by the Building Commission, before obtaining a building permit to carry out owner builder work on their land. Applicants are required to provide evidence of their ownership of the land and demonstrate that they have sufficient knowledge of the duties and responsibilities of an owner-builder.

Please visit the Department of Mines, Industry Regulation and Safety – Building Commission website for more information on Becoming an Owner-Builder