Bathroom Renovation Cost Calculator
Get an indicative cost range for your Gold Coast bathroom renovation. Adjust the size, scope and finish level to see how the estimate changes.
Your project details
Indicative range
This is an indicative range only, not a quote. We have applied a buffer of plus or minus 12% to reflect the uncertainty of any estimate made without a site visit. Set aside a further contingency for surprises found once the old bathroom is stripped out.
How this bathroom renovations Gold Coast estimate is calculated
The calculator starts with a base cost for the bathroom size you choose, then applies a multiplier for the renovation scope and another for the finish level. Any optional extras are added as a fixed amount, and the total is shown as a plus or minus 12% range.
Method and formula
Estimate = (size base x scope multiplier x finish multiplier) + extras. The low and high figures apply a plus or minus 12% buffer to that total.
Assumptions used
- Small base: $20,000
- Standard base: $30,000
- Large base: $47,000
- Cosmetic refresh: x0.8
- Full strip-out: x1.0
- Layout change: x1.15 (relocating plumbing and drainage)
- Budget finish: x0.9
- Standard finish: x1.0
- Premium finish: x1.2
- Buffer: plus or minus 12%
The base figures are aligned with approximate 2026 Gold Coast and South East Queensland market averages: a small or budget renovation around $15,000 to $25,000, a standard full renovation around $25,000 to $35,000, and a premium or large renovation around $35,000 to $60,000 or more. These are market averages, not quotes, and exclude structural changes, asbestos removal and major plumbing relocations.
Assumption set: the existing room is structurally sound, access is normal, selections are available, no asbestos or major defect is discovered, and the estimate excludes council approvals, design fees and specialist remediation.
Source and your rights
In Queensland, residential building work valued over $3,300 (including labour and materials) must be carried out by a contractor holding the relevant licence and covered by a written DBC (Domestic Building Contract, the formal agreement that sets out scope, price and terms). Wet-area waterproofing is regulated building work and must be done to Australian Standard AS 3740. Verify a contractor's licence and read your contract rights with the Queensland regulator.
Important disclaimer
The estimate produced here is indicative only. It is not a quote. Real prices vary by layout changes, fixture quality, waterproofing scope, site access and prevailing labour and material costs. Use it as a planning guide before requesting a written quote.
Licensed bathroom renovators carry out the building work and should hold the relevant QBCC licence for their scope. Bath Renovation Gold Coast helps you prepare the room, scope and suburb details that make the quote conversation clearer.