Look for a plumber who is appropriately licensed in Queensland and experienced with the type of work you need, such as leaks, blocked drains, hot-water systems or renovations. You can check a contractor’s details through the Queensland Building and Construction Commission (QBCC) licence register, and ask for a written quote before work begins. Confirm whether the quote includes materials, call-out fees and GST, and ask about warranties and required compliance certificates. For major work, compare several providers and use a licensed professional rather than relying only on online reviews.