How big is the bathroom?

What finish level are you after?

Any premium add-ons?

Underfloor heating Electric in-screed mat · adds $1,800–$3,500 Freestanding stone bath Upgrade from drop-in · adds $3,000–$8,000 Smart toilet (bidet seat) Heated seat, washlet, soft close · adds $2,500–$6,000 Heated towel rail Hardwired, timer-switched · adds $400–$1,200 Move plumbing fixtures Relocate shower, toilet or vanity · adds $3,500–$8,000 Premium custom joinery Stone-top, soft-close drawers, integrated handles · adds $2,500–$6,500 Frameless shower screen 10mm toughened glass, hinged door · adds $1,200–$2,500 Tiled niche / feature wall Recessed shelving or accent stone · adds $800–$2,500

Got a failed waterproofing job? Here's what it costs to fix.

If water is escaping the wet area — bubbling paint next door, soft skirting, mould bloom — the original waterproofing has failed. Here's the realistic Sydney cost to put it right, by severity.

Minor — surface remediation $5,000 – $12,000 Visible mould or efflorescence, no damage to adjacent rooms. Strip wet area, re-membrane to AS 3740, re-tile.

Moderate — subfloor or wall damage $12,000 – $25,000 Water has reached the subfloor, plasterboard or adjacent walls. Includes substrate replacement, treatment and re-build.

Severe — structural rebuild $25,000 – $40,000+ Multiple rooms affected, framing rotted, ceilings below damaged. Full strip-out, structural repair, re-membrane and re-fit.

Important: In NSW, waterproofing on jobs over $5,000 must be done by a licensed builder under HBCF cover. If your original builder is still trading and the job is under 6 years old, you may have a major-defect claim. We can help you assess it.

About these numbers: Indicative price ranges based on Sydney supply & labour costs as at May 2026. Actual cost depends on access, structural condition, plumbing layout and finish selections. We provide written fixed-price quotes after an on-site assessment.

Tillow Built · NSW Lic. 393831C · Master Builders NSW · ABN 12 345 678 901