Do You Need a Licensed Builder for a Kitchen, Bathroom or Laundry Renovation in Queensland?

Stunning Bathroom Renovation

If you’re planning a kitchen, bathroom or laundry renovation in Queensland, one of the first questions to ask is:

👉 Do I need a licensed builder?

The answer isn’t always black and white — but in most cases, yes, you do. Kitchen, bathroom & laundry renovations involve multiple regulated trades, and Queensland has strict requirements around who can carry out and manage that work.

Understanding these rules upfront can save you from costly mistakes, compliance issues, and problems with insurance down the track.

When Is a Licensed Builder Required?

In Queensland, the Queensland Building and Construction Commission (QBCC) regulates building work and licensing.

A licensed builder is generally required when:

• The total value of the work is over $3,300

• The project involves structural or regulated building work

• Multiple trades need to be coordinated under one scope

You can read more directly from the QBCC here:👉 https://www.qbcc.qld.gov.au/licences/when-you-need-licence

While $3,300 is the legal threshold, the reality is that most kitchen, bathroom & laundry renovations exceed this and involve complex trade coordination, making a licensed builder the practical (and safest) choice.

Why Bathroom and Laundry Renovations Are Heavily Regulated

Bathroom and laundries are classified as “wet areas,” which means they must meet strict Australian Standards for waterproofing, drainage, and ventilation.

Unlike cosmetic upgrades, bathroom renovations involve systems that, if done incorrectly, can cause:

• Water damage behind walls and floors

• Mould and long-term health risks

• Structural deterioration

• Insurance claim issues

Because of this, certain parts of the work must legally be carried out by licensed trades, regardless of the project size.

Licensed Trades You Must Use

Even if you decide not to use a builder, you cannot avoid using licensed professionals for key parts of the job.

These include:

• Plumbing and drainage – must be completed by a licensed plumber, with a Form 4 compliance certificate

• Waterproofing – must be carried out by a licensed waterproofer, with a Form 43 certificate

• Electrical work – must be completed by a licensed electrician

The QBCC outlines licensing requirements and responsibilities here: https://www.qbcc.qld.gov.au/licences

In other words, even a “simple” bathroom renovation quickly becomes a regulated, multi-trade project.

What Licence Should a Bathroom Renovator Have?

If you’re engaging one company to handle the entire renovation, they should hold a: QBCC Builder Licence (Restricted to Kitchen, Bathroom & Laundry)

This allows them to manage the full scope of works, including coordinating trades, ensuring compliance, and delivering a finished project that meets Queensland standards.

Without this licence, there is often no single party responsible for the overall outcome — which is where many renovation issues arise.

What Should You Ask Before Hiring?

Before engaging a contractor, it’s worth taking a few minutes to verify their credentials. A reputable renovator should have no issue providing:

• A current QBCC licence number (which you can check online)

• The correct licence class for the work being undertaken

• Evidence of public liability insurance

• A written contract for works over $3,300

You can check a contractor’s licence here:👉 https://www.qbcc.qld.gov.au/licence-search

Taking this step helps ensure you’re working with someone properly qualified — and gives you access to protections that don’t apply when using unlicensed trades.

Can You Project Manage Your Own Kitchen, Bathroom and Laundry Renovation?

This is where things often get misunderstood.

Yes, homeowners in Queensland can project manage their own renovation — but only within certain limits, and with clear responsibilities.

If your renovation is relatively small (generally under $11,000), you may be able to coordinate the trades yourself, provided you:

• Engage licensed contractors for all regulated work

• Do not carry out any licensed work yourself

• Ensure all required compliance certificates are issued

In this scenario, you’re effectively acting as the organiser — not the builder.

What If the Renovation Is Over $11,000?

For larger renovations (which most kitchens and bathrooms are), you’ll need to either engage a licensed builder or apply to become an owner-builder.

The QBCC explains owner-builder requirements here:👉 https://www.qbcc.qld.gov.au/your-property/owner-builders

Becoming an Owner-Builder

If you choose to project manage the renovation yourself at this level, you’ll need to obtain an Owner-Builder Permit before starting work.

This involves:

• Completing an approved owner-builder course

• Applying through the QBCC

• Taking full responsibility for the project

You will still need to engage licensed trades for plumbing, waterproofing, and electrical work — and ensure all certification is completed.

What Responsibility Sits With You?

As an owner-builder, you are legally responsible for:

• Managing trades and scheduling

• Ensuring work complies with Australian Standards

• Site safety and workplace health requirements

• Rectifying any defects

You also won’t be covered by QBCC Home Warranty Insurance, meaning you carry the financial risk if something goes wrong.

Impact on Selling Your Property

Another key consideration is resale.

If you sell your property within six years of completing owner-builder work, you must:

• Declare the work to the buyer

• Provide relevant documentation

This can sometimes affect buyer confidence, particularly if the work isn’t well documented.

Is It Worth Project Managing Yourself?

While it may seem like a way to save money, the reality is often more complex.

Bathroom renovations rely heavily on correct sequencing between trades — especially when it comes to waterproofing and tiling. Even small mistakes in timing or coordination can lead to costly rectification later or significant delays in the completion of your project.

For straightforward cosmetic upgrades, managing the process yourself may be manageable. But for full renovations involving layout changes and multiple trades, working with a licensed builder is typically the safer and more efficient option.

Final Thoughts

So, do you need a licensed builder for a bathroom renovation in Queensland?

👉 In most cases, yes — particularly for full renovations.

And even if you choose to project manage the job yourself, you must still:

• Engage licensed trades

• Follow QBCC requirements

• Take full responsibility for compliance and outcomes

Understanding these requirements early can help you avoid unnecessary stress, delays, and unexpected costs.

Need Help With Your Bathroom Renovation?

At Moriarty Bathrooms, we’re fully licensed with the Queensland Building and Construction Commission and specialise in compliant, end-to-end bathroom renovations.

We manage everything from demolition through to completion — ensuring your renovation is done properly, safely, and in line with Queensland regulations.

Beautiful Bathrooms. Built Properly. Designed to Last.