What does a Plumber Cost? So, what does a plumber cost in Whangaparaoa? The price depends on the size and complexity of the job, the materials required, and whether it’s scheduled during regular hours or as an emergency call-out. Smaller tasks like fixing a leaky tap or unblocking a drain are generally at the lower end of the scale, while larger projects such as hot water cylinder installations or full bathroom renovations can be a significant investment.