What DIY Plumbing Work Is Illegal In Australia?

localsearch • December 17, 2021

It can be tempting to complete DIY work around the house, especially when it seems like a quick and simple fix. This is especially true if you’re trying to save yourself a bit of money and get your home fixed up on a budget.


Plumbing work is often no exception, with many would-be plumbers taking to the online world to get some quick info on how to fix up a small leak or water problem. However, what a lot of people don’t realise is that plumbing is a licensed trade in Australia and must be completed by a licensed professional.


So, what does this mean for anyone wanting to DIY their plumbing? What DIY plumbing work is illegal in Australia?

What Plumbing Work Requires a Licensed Professional?

In Australia, plumbing is a licensed trade. This means that only a professional who has completed trade school is legally allowed to undertake work on your plumbing system. The work that has to legally be completed by a plumber will vary state by state, however, this doesn’t change the fact that the majority of plumbing work must be done by a professional.


It is best to assume that the vast majority of plumbing work is illegal to DIY and must be undertaken by a professional.

Is There Any DIY Plumbing Work That You Can Do Yourself?

There are a few plumbing problems that you are allowed to handle yourself. Remember that these are going to vary a bit depending on which state you are in, so be sure to always double-check first. You could risk not only shoddy home repairs and further damage to your plumbing system but also a fine or prosecution if you accidentally do work that you are not supposed to do. The plumbing work that you’re allowed to undertake yourself can include the following:


  • DIY drain clearing with a plunger or drain snake
  • Replacing a broken or malfunctioning shower head
  • Changing a tap washer
  • The maintenance and cleaning of ground level grates to traps on the drains
  • Irrigation systems that are downstream from an isolating valve or a tap
  • The replacement of caps on the openings of sanitary drains

What Happens If You DIY The Work Yourself?

If you do decide to attempt to fix the plumbing problem yourself, there can be quite a few consequences, many of which you may not have considered. The first and most obvious is that your DIY plumbing work won’t fix the problem and you risk causing further damage to a system that is both delicate and complex. This can end up costing you a lot of money in further repairs and potential damage.


You can even face extensive fines and even jail time if your DIY plumbing work is identified as any work that you do yourself is considered to be breaking the law. This is especially true if your unlicensed work ends up hurting someone due to its potentially faulty nature.


Finally, unlicensed DIY plumbing work can have a big impact in the future if you decide to sell your home. If your DIY plumbing work is discovered (and it likely will be) in the pre-approval building inspections, you face the prospect of either having the sale fall through or having to pay for some urgent and probably expensive repairs to be undertaken by a professional plumber to ensure that all work is licensed and lodged on building inspection plans. Any work that isn’t lodged can cause a lot of problems when you’re trying to sell your property.

Hire A Professional

Rather than trying to undertake complicated and often illegal DIY plumbing work yourself, hire a professional to do it for you. Paying for a licensed plumber now can end up saving you a lot of time, money and stress later on. It can even potentially save you an expensive fine or even jail time. If you need a hand to get your plumbing sorted, the team at Expert Plumbing & Solar Services can help. Give us a call today and have a chat with one of our professionals.

Modern Bathroom With a Double Wood Vanity — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services March 12, 2026
Planning bathroom renovations in Bathurst? Discover 2026 cost factors, budgeting tips and what to expect. Read the guide and plan your project today.
Man in Blue Shirt Smiles Next to a Large — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services February 13, 2026
Discover the hidden benefits of hot water systems in Bathurst, reduce energy bills and improve efficiency. Learn more today.
Modern White Bathroom With Shower, Toilet, and Double Sink — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services January 5, 2026
Discover smart bathroom renovation ideas to refresh your space on a budget with practical tips and design inspiration. Read more today.
Person in Blue Shirt Connecting Pvc Pipes in a Trench — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services December 1, 2025
Upgrade your pipework for safer and smoother bathroom renovations in Bathurst—read the blog to learn why this step matters for long-term reliability.
Modern Bathroom With Dual Sinks, Large Mirror, Black Tile Accent Wall — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services September 29, 2025
Transform your space with expert bathroom renovations in Bathurst. Hire a bathroom renovation specialist today for lasting style and function.
Plumber in Blue Uniform Smiles, Holding Clipboard — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services July 22, 2025
Learn expert tips on choosing an efficient hot water system to suit your home needs. Read now or contact us for hot water system services in Bathurst.
Two People Stand by a Work Truck Loaded With Equipment — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services June 24, 2025
Spot plumbing trouble early! Learn 5 signs you need an emergency plumber in Bathurst. Act fast and protect your home. Learn more!
Hand Using Wrench on Brass Plumbing, Near Red Valve and Insulated Pipes — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services April 25, 2025
Find a trusted plumber in Bathurst with our expert tips. Avoid costly mistakes—read the guide now and make the right choice fast. Learn more!
Plumber Kneeling, Fixing Sink in a Bathroom — Expert Plumbing & Solar Services Bathurst in Kelso, NSW
By Expert Plumbing & Solar Services March 20, 2025
Learn when to tackle plumbing issues yourself and when to call an emergency plumber. Avoid costly mistakes. Act now to protect your home!