Bathroom Renovation Cost Calculator

Get an indicative cost range for your Cairns bathroom renovation. Adjust the size, type and layout to see how the estimate changes.

Your project details

Bathroom renovation Cairns cost method

The calculator starts with a base cost for the selected bathroom size and applies a multiplier for the renovation type. A layout change adds roughly 15% because it involves relocating plumbing and drainage.

  • Small bathroom base: $18,000
  • Medium bathroom base: $28,000
  • Large bathroom base: $42,000
  • Refresh multiplier: 0.6
  • Mid-range multiplier: 1.0
  • Luxury multiplier: 1.6
  • Layout change: +15%

The result is then shown as a +/- 15% range to reflect the uncertainty of any estimate without a site visit. For work over $3,300, Queensland law requires a written Domestic Building Contract from a QBCC-licensed contractor.

Queensland Building and Construction Commission (QBCC)

Important disclaimer

The estimate produced here is indicative only. It is not a quote and does not bind any contractor or supplier in our network. Real prices vary by site conditions, scope, finish level, supplier availability and prevailing market conditions. Always obtain a written fixed-price quote from a QBCC-licensed building contractor before committing to a renovation budget.