Property development

Development Profit and Margin Calculator

Calculate development profit, margin on revenue and return on cost. Enter your own assumptions and local rates.

What this calculator estimates

Calculate development profit, margin on revenue and return on cost. It combines the inputs below to produce Estimated development profit. Every assumption remains editable so the estimate can reflect the property, financing and location being evaluated.

Worked example

Using the displayed sample assumptions, the calculator produces $1,050,000. This is an illustration, not a market quote. Change one input at a time to understand what drives the result.

Inputs and assumptions

• Completed value or sale revenue — sample input: 6000000 currency units
• Land cost — sample input: 900000 currency units
• Hard costs — sample input: 3000000 currency units
• Soft costs — sample input: 550000 currency units
• Financing and carrying costs — sample input: 300000 currency units
• Selling and leasing costs — sample input: 200000 currency units

How to interpret the result

Stress-test cost, timing, financing and stabilization assumptions. Compare a conservative case with an expected case and keep a record of the assumptions used.

Common mistake to avoid

Do not treat a preliminary budget as a guaranteed project cost. Local definitions, taxes, lending practices and measurement requirements can materially change the result.

Related calculators

Reviewed 2026-09-08.