The most expensive bathroom mistakes often begin before demolition. Learn ten common planning and construction problems—and how to avoid them before they affect your budget, programme or finished result.

Many bathroom renovations can proceed without Building Consent, but the answer depends on plumbing, fixture numbers, structural work and the type of building. Here is how to identify when you need professional or council advice.

How long will your bathroom be out of action? A simple refresh may take only a few days, while a complete renovation will typically take 2–6 weeks on site. Explore the work involved and how good planning helps prevent delays.