Free construction cost calculator
Get a first budget range for your home addition, ADU, loft conversion, renovation or new house in a few seconds. Then, if you want real numbers, an engineer can calculate your actual project.
Your estimated budget range
Breakdown by stage
| Stage | Range |
|---|
This is an automatic, indicative range based on average costs. It is not a quote or a guaranteed price. Real costs depend on your site, design, local labour market and material prices. Land, permits and furniture are not included.
Get a precise estimate from an engineer
Send us these inputs with your plans, sketch or photos. We will calculate your actual project, line by line.
How this calculator works
- It uses average building costs per square metre (or square foot) for your country, adjusted for location, project type, number of floors and finish level.
- The result is a range, because two projects of the same size can cost very differently depending on the site, the design and the contractor.
- It does not include land, permits, taxes, connection fees, landscaping or furniture.
Flagship service
Construction cost estimate
A clear budget for your addition, conversion, renovation or new house, broken down stage by stage.