Square metres affect tiling, waterproofing, demolition and labour time.
Bathroom Calculator
Bathroom renovation calculator for Australia
Short answer
A bathroom renovation calculator is useful before quotes because it helps you test how size, finish level and layout changes affect the likely range. Use the main calculator with project set to bathroom, then refine the result with waterproofing, plumbing, tile and access assumptions.
Calculator inputs that matter
Standard and premium fixtures can change the final range quickly.
Moving shower, toilet, vanity or bath usually increases plumbing and floor work.
Adjust your estimate
- Add risk if plumbing or electrical points move.
- Add risk for old waterproofing, water damage, soft floors or structural issues.
- Add risk for apartment access, lift bookings or strata rules.
- Check whether demolition, rubbish removal and certificates are included.
What to do after calculating
- Take photos from all corners and measure the bathroom.
- Decide what stays in place and what moves.
- Choose standard, mid-range or premium finish assumptions.
- Send the same scope to multiple contractors for comparable quotes.
Quote Brief
Turn your estimate into a contractor-ready brief
Share your bathroom size, suburb and scope so your request can be compared against similar contractor quotes.
This calculator content is general planning information only. A licensed contractor must inspect the bathroom before giving an accurate quote.