Plumbing Specialisations in Australia

Completing your Certificate III in Plumbing gives you a solid trade foundation, but where you take your career from there is completely up to you. In Victoria, the VBA issues separate licence classes for different plumbing streams. The path you choose dictates the gear you’ll buy, the contracts you can legally take on, and your overall earning potential.

If you enjoy variety and interacting with homeowners, Sanitary Plumbing & Water Supply is the natural home base. You’ll spend your days replacing hot water systems, fixing leaking taps, roughing-in renovations, and clearing domestic drains. Fully licensed plumbers in this space earn $85,000–$105,000 on wages, while those running their own subbie business can easily clear $130,000 to $180,000+.

If you want to boost your income quickly within domestic plumbing, getting your Gasfitting endorsement is a no-brainer. Installing gas cooktops, extending gas lines, and carrying out safety checks requires precision and compliance sign-offs. Fewer plumbers carry a gas endorsement compared to a general water licence, which means less competition and the ability to command premium rates.

For tradies who prefer outdoor work and heavy machinery, Drainage covers underground sewer lines, stormwater systems, and pipe repairs. You’ll work closely with CCTV equipment, pipe locators, and excavators. Alternatively, Roofing Plumbing focuses on sheet metal flashings, gutters, downpipes, and Colorbond roofing on new builds and heritage Melbourne homes.

If you’re aiming for commercial work, Mechanical Services (HVAC Plumbing) and Fire Protection sit at the top of the trade tree. Mechanical plumbers handle hydronic heating, chilled water pipework, and commercial plant rooms, earning $110,000 to $150,000+. Fire protection plumbers focus on commercial sprinkler systems and hydrants, representing one of the most lucrative specialized niches in Australia.

Housecare Plumbing Services Pty Ltd
Fully Licensed & Insured

Melbourne
Phone: 0466 820 789 [English & Vietnamese available]
Website: housecareplumbing.com.au
Facebook: Housecare Plumbing