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The Ultimate Guide to Bathroom Renovations in Sydney

The complete 2026 guide to bathroom renovations in Sydney — costs, timelines, approvals, compliance, choosing a builder, and protecting yourself from defective waterproofing.

TL;DR A Sydney bathroom renovation in 2026 typically costs $18,000–$35,000 and takes 2–4 weeks on site. Most internal renovations don't need council approval, but every one must meet strict waterproofing and compliance standards. The biggest risk isn't cost — it's defective hidden work, especially waterproofing. This guide pulls together everything: costs, timeline, approvals, compliance, choosing a builder, and protecting yourself. It's the one-stop Sydney overview. What it costs Budget $12,000–$18,000; standard $18,000–$30,000; mid-range $30,000–$40,000; premium $40,000–$80,000+. Labour is 40–60% of the total. The biggest levers are tiles, fixtures, and whether you move plumbing. Hold a 10–15% contingency. How long it takes Most Sydney bathrooms are on site about 2–4 weeks, following the…