Planning a Kitchen Renovation? Plumbing Traps in Brisbane Homes
The plumbing budget in a kitchen reno is usually 6–10% of the total — but the mistakes cost 3x that in rework. Here are the traps we see most often.
Island Bench Waste Heights
An island sink drain has to be lower than the fixture side of any AAV, which forces a subfloor drop. Confirm slab access before your cabinet-maker starts.
Dishwasher Isolation
Post-2019 QBCC guidance recommends dedicated mini stops for both dishwasher and fridge water lines — cheap now, gold if you have a leak later.
Hot Water Sizing
A second family bathroom and dishwasher can outrun a 20-year-old 135L electric storage tank. Reassess capacity during the reno, not after.
Gas Cooktop Relocations
Any move of a gas point needs a licensed gas fitter. Budget $400–$900 for a re-run within the same room.
Frequently Asked Questions
Can I use PEX for the reno?
Yes, PEX-a with brass fittings is now standard for new work across Brisbane and is faster (and cheaper) than copper for concealed runs.