Cost per Unit Calculator
Divide total project cost by the number of completed residential units.
Compare projects with a consistent cost scope, unit size and unit mix.
Continue in the full model.
Move from this screening result to the complete Multifamily Development Model.
Get the model · €79 incl. VATHow the Cost per Unit calculation works
Cost per unit = total development cost ÷ completed units.
Example calculation
€18m of project cost across 90 completed units equals €200k per unit.
How professionals use the result
Use cost per unit to benchmark density and design options. Review unit size and mix before comparing schemes.
Common mistakes
- Excluding land or finance without labelling it
- Dividing by planned rather than deliverable units
- Ignoring unit size
- Mixing gross and net areas
Cost per Unit Calculator FAQs
What does the Cost per Unit calculator measure?
Divide total project cost by the number of completed residential units.
What formula does the Cost per Unit calculator use?
Cost per unit = total development cost ÷ completed units.
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 cost per unit to benchmark density and design options. Review unit size and mix before comparing schemes.
Which mistakes are most common?
Excluding land or finance without labelling it; Dividing by planned rather than deliverable units; Ignoring unit size; Mixing gross and net areas.