Construction Cost Calculator
Estimate hard construction cost from gross area, unit cost and contingency.
Calculated directly from the assumptions shown.
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Get the model · €49 incl. VATHow the Construction Cost calculation works
Construction cost = gross area × cost per square metre × (1 + contingency).
Example calculation
8,000 sqm at €2,200 per sqm plus 7.5% contingency gives €17,600,000 base cost and €1,320,000 contingency: €18,920,000 in total.
How professionals use the result
Use this for early screening. Add professional fees, enabling works, tax, finance, FF&E and land separately.
Common mistakes
- Mixing gross and net area
- Applying cost per square foot to square metres
- Omitting abnormal works
- Treating contingency as a substitute for scope
Construction Cost Calculator FAQs
What does the Construction Cost calculator measure?
Estimate hard construction cost from gross area, unit cost and contingency.
What formula does the Construction Cost calculator use?
Construction cost = gross area × cost per square metre × (1 + contingency).
Is the result suitable for a final investment decision?
Use it as a transparent screening calculation. Validate deal-specific tax, timing, financing and legal assumptions in a complete underwriting model before making a decision.
Do I need an account?
No. The calculator is free and runs in your browser. FormulaPlanet does not store your projects, inputs or results.
Is any input sent publicly?
No calculation is public by default. A shareable link is only created when you explicitly choose to copy one; that link contains the assumptions shown in its URL.
Why might my spreadsheet give a different answer?
Differences usually come from timing, compounding, sign conventions, fees or a different definition of the numerator or denominator. Match every period and definition before comparing.
What should I review alongside this result?
Use this for early screening. Add professional fees, enabling works, tax, finance, FF&E and land separately.
Which mistakes are most common?
Mixing gross and net area; Applying cost per square foot to square metres; Omitting abnormal works; Treating contingency as a substitute for scope.