Home Cost Australia

Home Renovation Budget Calculator

Build a line-item renovation budget with a contingency and low, base and high totals — a planning worksheet, not a market-price estimate.

This is a budgeting worksheet — enter your own low/base/high figures for each line. It does not fill in market prices for you.

Line 1
Line 2

0–50%.

Your estimate

Enter your values and select Calculate to see the estimate.

How the worksheet works

Enter your own low, base and high figure for each line item. The tool sums each column, adds fixed extras (professional fees, permits, temporary accommodation) and applies your contingency percentage to produce low, base and high totals.

Why it's a worksheet, not a price

We don't fill in market prices for you, because renovation costs depend heavily on scope, finishes, access and location. Use our cost guides to inform your figures, then bring them here. Choose a contingency that matches your risk tolerance and project uncertainty — you can model scenarios such as 10%, 15% or 20%. These are planning scenarios, not market-price claims.

How we calculated this

This estimate uses transparent inputs and a fixed formula. See our methodology for how ranges, sources and assumptions work.