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Welcome to the Bunnings Workshop community @marynguyen. It's wonderful to have you join us, and many thanks for your question about installing taps.
According to The Australian Plumbing Code, only a licensed plumber is authorised to complete any work involving plumbing or drainage. To install a tap, you'd need to connect it to the plumbing work, and therefore you'd require a plumber.
There are a few jobs that you can complete yourself, and these include:
- installing or maintaining an irrigation or lawn watering system downstream from an isolating valve, tap or backflow prevention device on the supply pipe for the irrigation or lawn watering system
- replacing a jumper valve or washer in a tap
- changing a showerhead
- replacing a drop valve washer, float valve washer or suction cup rubber in a toilet cistern.
You'll likely find a few sources that suggest you can change the tap yourself. However, I'd encourage you to do your own research or contact your local building authority for more information. I like to stick on the safe side and suggest that if you're not changing a washer or updating a showerhead, it's best to call in the professionals. I always look at the worst-case scenario. What if the plumbing connection on your new tap fails and your house is flooded? I can guarantee your home insurer is going to be very interested in knowing when the tap was installed and by whom. If you can't prove that a licensed plumber installed the tap, you're going to have a hard time claiming the insurance.
Please let me know if you have any questions.
Mitchell
