Kitchen renovation plumbing: what to plan

Sink position, drain falls, dishwasher, fridge and filter lines, gas, hot water and paperwork: the plumbing to settle before you order the cabinets.

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Key takeaways

Fix the sink position first. A sink on the same wall is simple; an island sink needs a new drain with enough fall and a plan for venting.
Give the plumber the actual sink, tap, dishwasher and fridge details before rough-in, not after the benchtops have been measured.
Every water, waste and gas connection in a kitchen is licensed work in NSW, and any gas work needs a licensed gasfitter and a gas certificate.
Kitchen taps are not covered by the 50°C limit that applies to showers and basins, so the kitchen hot water can run hotter than the bathroom.
At the end you should receive a copy of the Certificate of Compliance, a gas certificate if gas was touched, and a plan of any drainage work.