Owner Builder Approval - Western Australia

Service summary

You will require this approval if you intend to be an owner builder. An owner builder conducts building work on their own property that would otherwise require a registered builder. Approval is necessary for projects valued over $20 000. There are several different classes of work for which approval can be given:

  • Class 1a (i) - a single dwelling such as a detached house, including extensions to a house or a habitable dwelling on the same property but separate to the main house such as a granny flat
  • modification, cut outs or alteration of an existing building
  • Class 10 buildings - non-habitable buildings such as a private garage, carport or shed
  • small commercial building - one or two storey buildings with a floor space of less than 500 metres squared that is not a detached house, Class 10 building or farm building.

You must obtain this approval before you can apply for a building permit from local government for your building work. In accordance with legislation, you must have a policy of insurance in relation to the building work or have insurance cover provided by an approved fund. You may only be granted this approval once every six years.

Please consult the Contact Officer for more information.

Service type


A licence defines the need to obtain recognition / certification and registration to undertake a certain business activity.

Eligibility requirements

To obtain approval as an owner-builder all the owners of the land must:

  • submit the required forms
  • pay any required fees.

Please refer to the website and attached documents or consult the Contact Officer for more information regarding eligibility requirements.


This approval expires six months from when it is granted, or on the day that the local government refuses the owner builders application for a building permit..






Administering agency

Department of Mines, Industry Regulation and Safety
Building Commission

Act(s) name

Building Services (Registration) Act 2011 (Western Australia)

Regulation(s) name

Building Services (Registration) Regulations 2011 (Western Australia)

Contact details

Department of Mines, Industry Regulation and Safety
Building Commission

Operating address:
Level 1, Mason Bird Building
303 Sevenoaks Street
Western Australia 6107
Mailing address:
Locked Bag 14
Cloisters Square PO
Western Australia 6850


1300 489 099


08 6251 1501


Building Commission Opens in a new browser window

Supporting information


The information contained on the Australian Business Licence and Information Service (ABLIS) web site, or via packages or other sources is intended for general guidance only.

To the full extent permitted by law, the Federal, State, Territory and Local Governments make no representations or warranties (expressed or implied) in relation to the information, including its accuracy, currency or completeness.

The business information provided does not constitute professional or legal advice, nor is the use of any third party resource an endorsement of the information contained, the associated organisation, product or service. It is recommended that you obtain appropriate professional and /or independent legal advice to ensure that the material provided here is relevant to your particular circumstances.

To the full extent permitted by law the Federal, State, Territory and Local Governments, their employees and agents do not accept any liability for any reason, including without limitation, liability in negligence, to any person for the general information which is provided herein, or in respect of anything, including the consequences of anything done, or not done, by any such person in whole or partial reliance upon the information.