Plumbing and Drainage Licensing Requirements in Queensland
The licensing framework
Queensland plumbing and drainage work is regulated under the Plumbing and Drainage Act 2018 (Qld) and administered by the QBCC. The core concept to master is the distinction between a contractor licence (a business entity that may contract for and carry out work) and an occupational licence (an individual's personal authority to perform work, such as a plumber, drainer, roofer, or gasfitter). A licensed individual cannot automatically contract work; a licensed company cannot perform physical work without licensed individuals. Design work, notifiable work and council-connected work each carry separate permission requirements.
What candidates are tested on
Know the licence classes, the scope of work each permits, and the supervisory obligations attached to each. Understand the nominee concept: a contractor licence must have a nominated licensed individual responsible for the work, and questions frequently probe what happens when the nominee leaves, is absent, or is unqualified for the work being done. Also understand the endorsements (for example, backflow prevention, thermostatic mixing valves, or solar hot water) and the rule that you may only perform work covered by your licence and endorsements.
Traps to watch
- Confusing contractor and occupational licences in scenario questions.
- Assuming a plumber's licence covers gasfitting or draining automatically.
- Forgetting that unlicensed work can be performed only under direct supervision of a licensed person in limited circumstances.
- Ignoring the requirement to display or produce the licence on request.
- Missing that licence conditions can restrict the type of work or require supervision.
Rule of thumb
If a question asks who can do this work, answer with the individual occupational licence and any endorsement. If it asks who can enter the contract, answer with the contractor licence and nominee.