Tradesperson's (drainage plumbing) licence

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Regulations made under the Plumbers Licensing Act 1995 set out the licensing requirements for a tradesperson’s licence (drainage plumbing).

Who needs a tradesperson’s licence (drainage plumbing)

A person undertaking plumbing work must hold a licence or permit.  A person with a tradesperson’s licence (drainage plumbing) can undertake drainage plumbing work under the general direction and control of a licensed plumbing contractor.  A person who holds a tradesperson’s licence (drainage plumbing) is authorised to:

  • carry out drainage plumbing work subject to any conditions on the tradesperson’s licence;
  • supervise the carrying out of plumbing work by an apprentice or the holder of a provisional tradesperson’s licence.

Eligibility for a tradesperson’s licence (drainage plumbing)

To be eligible for a tradesperson’s licence (drainage plumbing) you must already hold a Certificate II in Drainage, or have been the holder of a provisional tradesperson’s licence (drainage plumbing) and complete approved units from the Certificate III in Plumbing (CPC32408 – Migrant Gap Training). 

Alternative qualification

The Board is empowered to accept equivalent Western Australian qualifications.  If you have a different qualification to that stated in the application form, the Board may accept your qualification as equivalent to the usual qualification.

Applying for a plumbing tradesperson’s licence (drainage plumbing)

Apply for a plumbing tradesperson’s licence by submitting:

  • a completed Form 103 – application form;
  • 100 points of identification;
  • two hardcopy passport style photographs;
  • an original or certified copy of a current National Police Certificate;
  • a copy of your statement of academic record;
  • the application fee and licence fee shown on the application form.

After you have submitted your complete application

Licensing officers will assess your application on behalf of the Plumber’s Licensing Board.  Subject to the details of your application and the Board’s assessment guidelines, an officer acting under delegation or the Board itself will determine your application.  You will be advised of the licensing decision.

More information

Download the tradesperson’s licence (drainage plumbing) application form above, which includes guidance on making your application.  Further information on obtaining a tradesperson’s licence (drainage plumbing) is also available from Licensing Services on 1300 489 099 or email


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