House construction cost calculator

Enter your plot and built-up area, floors and finish level to get an itemised estimate with low, typical and high scenarios. Every rate and assumption behind the result is shown and editable — pick a listed city to pre-fill a regional multiplier from published figures, or set your own.

Construction cost calculator

These are indicative planning estimates, not a contractor quotation. Actual costs depend on site conditions, design, location, material specifications, labour rates and local approvals.

Location & plot
Specification
Bedrooms and bathrooms are informational and do not change the estimate.
Editable assumptions (rate, contingency, FAR…)

Enter your details and press Calculate.

How this estimate is built

01

Rate × area

An all-in rate per sq ft of built-up area for your finish level, adjusted by the regional multiplier and a factor for floor count.

02

Split and contingency

The base cost is split across nine work categories, then a contingency percentage is added on top.

03

Checked for buildability

Your plan is validated against floor-area ratio and ground coverage limits, so the budget rests on something you can actually get sanctioned.

Full formulas are documented in the project's guides. Rates and quantities are illustrative planning assumptions with stated sources and review dates, not verified market data.