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A Foolproof Guide to Surviving Your First Bathroom Reno

How to survive your first bathroom renovation without blowing the budget, getting deceived, or ending up with hidden water damage. The traps to dodge and the safeguards that work.

TL;DR Surviving your first bathroom renovation comes down to dodging three traps: the budget blowout, the dodgy operator, and the hidden water damage. Each is avoidable with a few firm rules — a fixed price, verified licences, certified waterproofing, and payments tied to completed work. Follow the rules below and your first renovation ends in a beautiful bathroom, not a cautionary tale. Trap 1: The budget blowout Many homeowners underestimate bathroom costs and get caught when surprises appear. Survive it by setting a realistic Sydney budget (standard jobs $18,000–$30,000 in 2026), holding a 10–15% contingency, signing a fixed-price contract, and refusing to make changes mid-build — the most expensive kind. Trap 2: The dodgy operator The worst outcome isn't a high price — it's paying for …