Home & DIY

Home Renovation Budget Calculator

Budget a renovation by area with a contingency.

Enter your values

ⓘ Live results

Results
Total budget
$41,400.00
Base cost
$36,000.00
Contingency
$5,400.00
Labour / materials
$18,000.00 / $18,000.00

Quick answer

Renovation cost is driven by area and finish level, with labour typically 40-60% of the total and a 15% contingency essential.

cost = area x cost per unit x (1 + contingency)

How to use the Home Renovation Budget Calculator

  1. 1Measure the area being renovated.
  2. 2Use a local cost-per-unit rate for your finish level.
  3. 3Never plan below a 15% contingency on older properties.

Worked example

Using the values the calculator loads with:

Inputs

  • Area to renovate40 m² or ft²
  • Cost per unit900 $
  • Contingency15 %
  • Labour share50 %

Results

  • Total budget$41,400.00
  • Base cost$36,000.00
  • Contingency$5,400.00
  • Labour / materials$18,000.00 / $18,000.00

Frequently asked questions

Why is my quote higher?

Structural work, permits and services relocation sit outside simple area rates.

Kitchens and bathrooms?

They run 2-4x the per-area cost of bedrooms because of services and fittings.

About this calculator

Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.