Confident handywoman wearing saf ety gear and holding a plumber's wrench indoors
Unlike most other trades, plumbing and drainage work in Queensland is licensed regardless of the job’s value.

Quick answer

A QBCC plumbing licence is required for almost all plumbing and drainage work in Queensland, regardless of job value. Unlike most other trades, there is no general $3,300 exemption. Plumbing is regulated under the Plumbing and Drainage Act 2018, administered by QBCC.

Plumbing stands apart from every other trade QBCC licenses. Where a carpenter or painter can generally do small jobs unlicensed under the standard threshold, plumbing and drainage work protects drinking water and public health, so the licensing net is cast far wider.

This guide explains why plumbing is treated differently, what the licence actually covers, the different licence types, including the personal occupational licence almost every working plumber needs, and how to apply.

Table of Contents

1. Do You Need a QBCC Plumbing Licence?

Close-up of a plumber in blue uniform work ing on a pipe repair with a wrench
Even a small plumbing repair generally falls under licensing, since there is no general value threshold to fall back on.

Yes, almost always. Plumbing and drainage work in Queensland is regulated under the Plumbing and Drainage Act 2018 (the PD Act), not the general QBCC Act building work rules that most other trades rely on. This matters because the PD Act does not carry the same $3,300 value exemption that applies to trades like carpentry, painting or concreting.

In practice, this means installing, altering, repairing, maintaining, testing or commissioning plumbing or drainage work generally requires a licence no matter how small the job is. If you are still working out which broad licence category applies to your business, compare the main QBCC licence options.

Trade Value exemption?
Carpentry, painting, concreting, tiling Generally exempt under $3,300 (QBCC Act).
Plumbing and drainage No general value exemption (Plumbing and Drainage Act 2018).

Don’t assume the $3,300 rule applies

The exemption that lets tradespeople do small unlicensed jobs in most other trades does not carry across to plumbing and drainage work in the same way. Treat every plumbing job as licensed work by default.

2. Why Plumbing Is Regulated Differently

Close-up of a plumber's hands installing steel pipes indoors, showcasing skilled manual work
Incorrect plumbing work can contaminate drinking water or spread disease, which is why the rules sit apart from general building work.

The occupational licensing system for plumbing and drainage exists to protect public health, safety and the environment. Done incorrectly, plumbing and drainage work can contaminate drinking water, spread infectious disease, or cause serious property damage, risks that sit above what most other trades carry.

This is also why plumbing has a rule most other trades do not: if you personally perform or supervise regulated plumbing and drainage work as an employee, you must hold your own occupational plumber and drainer licence. A carpenter or painter working as an employee under a licensed contractor generally does not need a personal licence. A plumber almost always does, because it is the individual, not just the business, who is trusted with the technical judgement involved.

Every hands-on plumber needs their own licence

Unlike most trades, being “just an employee” does not remove the licensing requirement in plumbing. If you are personally doing the work, you generally need your own occupational plumber and drainer licence.

3. What the QBCC Plumbing Licence Covers

Close-up of a plumber installing a radiator pi pe using specialized tools
Testing and commissioning systems is part of the licensed scope, not just installing new pipework.

The QBCC Plumbing and Drainage licence class covers installing, commissioning, maintaining and testing plumbing and drainage services across all classes of buildings and premises.

  • ✓Water supply, sanitary plumbing and drainage systems in residential, commercial and industrial buildings.
  • ✓Compressed air, heating, steam, vacuum and ventilation systems connected to plumbing.
  • ✓Installation of fire collars that is incidental to plumbing and drainage work.
  • ✓Preparing plans and specifications for plumbing and drainage work.
  • ✓Incidental work from another licence class, subject to the usual incidental-work conditions.

Drainage is worth calling out separately: it has its own related licence classes, including a dedicated on-site sewage class, and a plumbing contractor licence does not automatically cover drainage work or vice versa.

Plumbing and drainage are separate classes

Holding a plumbing licence does not automatically authorise drainage work, and holding a drainage licence does not automatically authorise plumbing work. Confirm you hold both classes if your work spans both.

4. The Different Plumbing Licence Types

A professional female plumber we aring protective gear, ready for work indoors
Plumbing licensing has more licence types than most trades, reflecting how many different roles the industry needs covered.

Plumbing and drainage licensing has more available licence types than most other QBCC trades, reflecting the range of roles in the industry.

Licence type What it allows
Contractor licence Contract directly with clients, advertise plumbing services, and issue invoices in your own name.
Nominee Supervisor licence Act as the technical nominee for a licensed company; does not allow independent contracting in your own name.
Site Supervisor licence Supervise plumbing or drainage work on site for a licensed contractor.
Occupational plumber and/or drainer licence Personally perform regulated plumbing or drainage work as an employee of a licensed contractor.
Occupational restricted plumber or drainer licence Perform a narrower, defined scope of plumbing or drainage work, based on your specific qualification.

There are also specific water plumber endorsements for scopes like irrigation and fire protection hydrants and hose reels, each with their own qualification pathway. If your business will operate through a company, remember the company itself needs its own licence and a matching nominee, which the QBCC Company & Nominee Licence page explains in more detail.

A provisional licence can bridge the gap

If you have the qualification but not yet the practical experience, or the experience but not yet the qualification, a 1-year provisional licence can let you work under supervision while you complete the remaining requirement.

5. How to Get a QBCC Plumbing Licence

A technician concentrates on adjusting a water pump indoors
Twelve months of supervised experience under a provisional licence is a common pathway toward a full occupational licence

Most plumbing licence applications need the following elements prepared and checked before lodgement.

  • ✓CPC32413 – Certificate III in Plumbing, including the drainage stream, completed through an apprenticeship or an equivalent recognised pathway.
  • ✓Twelve months of lawful, supervised practical experience, which can be completed under a provisional licence if needed.
  • ✓The approved managerial qualification, BSBESB402 – Establish legal and risk management requirements of new business ventures, for a Contractor licence.
  • ✓Financial information to meet Minimum Financial Requirements for a Contractor licence.
  • ✓Photographic proof of identity, evidence of your business structure, and a pass on the fit-and-proper-person check.

Use the QX Checker to sense-check your application before you lodge it, and see the QBCC licensing FAQs for answers to broader licensing questions.

Fees include an annual admin fee

Plumbing licence fees can be paid for 1 to 5 years upfront, but an annual administration fee still applies each financial year in addition to the licence fee itself.

6. Common Mistakes Plumbers and Homeowners Make

A worker fixing pipes with tools in an industrial indoor environment
Most plumbing licensing problems come from applying rules that work for other trades, but not for plumbing.
Mistake Why it causes problems How to avoid it
Assuming small plumbing jobs are exempt under $3,300 Plumbing and drainage does not carry the same general value exemption as most other trades. Treat all plumbing and drainage work as licensed by default.
Employees performing plumbing work without their own licence Anyone personally performing regulated plumbing or drainage work generally needs an occupational licence, even as an employee. Confirm every hands-on team member holds the correct occupational licence.
Assuming a plumbing licence covers drainage work Plumbing and drainage are separate licence classes. Hold both classes if your work spans plumbing and drainage.
Working past the 1-year limit on a provisional licence A provisional licence is time-limited and requires supervision throughout. Track your provisional period and apply for the full licence once eligible.
Assuming a company licence is not needed if the nominee is individually licensed A personal licence does not authorise a company to contract plumbing work in its own name. Confirm whether contracts, invoices and quotes are issued in the company’s name.

7. How QBCC Express Helps Plumbers

Portrait of a female construction worker in safety gear holding a wrench indoors
Getting the licence type and evidence right the first time keeps plumbing teams compliant across every role on site.

Plumbing licensing has more moving parts than most other trades, separate classes for plumbing and drainage, a personal licensing requirement for employees, and provisional pathways for those still gaining experience. QBCC Express helps plumbers and plumbing companies work through that complexity before it becomes a compliance problem.

Support area What it covers
Licence class and type selection Matches Contractor, Nominee Supervisor, Site Supervisor or Occupational licensing to each person’s actual role.
Provisional licence pathways Helps structure applications for tradespeople still completing qualifications or supervised experience.
Plumbing vs drainage scope assessment Confirms whether your team needs one class or both, based on the actual scope of work.
Company and nominee structuring Sets up company licensing and nominee arrangements for plumbing businesses that trade as companies.

Start with the QBCC licence options page to confirm the right pathway for your business.

Check every team member, not just the business

The safest habit for any plumbing business is confirming that every hands-on team member holds the correct occupational licence, not just checking that the business itself is licensed.

8. FAQs

Is there a $3,300 exemption for small plumbing jobs?

No. Plumbing and drainage work is regulated under the Plumbing and Drainage Act 2018, which does not carry the same general value exemption as most other QBCC trades.

Do employees who do plumbing work need their own licence?

Generally yes. If you personally perform or supervise regulated plumbing and drainage work, you must hold an occupational plumber and drainer licence, even as an employee of a licensed contractor.

Does a plumbing licence cover drainage work too?

Not automatically. Plumbing and drainage are separate licence classes, and a plumbing contractor licence does not automatically cover drainage.

What is a provisional plumbing licence?

A provisional licence is a 1-year licence issued in scenarios where you have the qualification but not the practical experience, or vice versa, allowing you to work under supervision while completing
the outstanding requirement.

Can my company use my personal plumbing licence?

No. A company is a separate legal entity and needs its own licence and a nominee holding the matching individual class, even if a director or employee is personally licensed.

Where should I start if I am unsure which plumbing licence I need?

Start with the QBCC licence options page or contact QBCC Express with your qualifications, experience and the scope of work you intend to perform.

Ready to confirm your plumbing licensing position?

Get clarity on which classes and licence types your team actually needs, before your next job starts.

Book a free consultation with QBCC Express