Originally posted on Common Bathroom Renovation Mistakes NZ | 2026 Guide Superior Renovations - Auckland’s Trusted Home Renovation Specialists Quick answer: The most common bathroom renovation mistakes in NZ include underestimating costs (Auckland mid-range sits at $25,000–$35,000, not the $10,000 many expect), skipping building consent , cutting corners on waterproofing, poor ventilation planning, and choosing materials based on looks rather than performance in our humid climate. A bathroom renovation should be one of the best investments you make in your Auckland home. When it goes right, you get a space that works better, feels better, and adds genuine value to your property. When it goes wrong? You get mould behind new tiles, a $15,000 budget that blows out to $25,000, or a call from Auckland Council asking why nobody applied for consent before the plumber moved that waste pipe. We’ve been renovating bathrooms across Auckland since 2017 — from tired ensuites in Grey Lynn villa...