About the Renovation Cost Calculator
Put together a first renovation budget. Get build rates from local builders, add fixtures, fittings and fees, and always include a contingency — renovations rarely come in under budget.
Renovation Cost Calculator
Build a renovation budget from area, build rate, fixtures, fees and contingency.
- Enter your numbers
- Results update as you type
- Copy the answer or share the link
Runs in your browser. Your data and files never leave your device.
Results are estimates. Allow for waste, local conditions and supplier guidance before you buy.
Frequently asked questions
How much contingency for a renovation?
10–20%, and more for older homes where hidden problems are common.
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