Real Estate Developer Profit Calculator
Enter your GDV, land, construction, marketing, and finance costs to instantly see development profit, ROI, and profit margin — the core metrics of any feasibility appraisal.
Development costs & revenue
Include professional fees, planning, and contingency in this figure.
Covers agent commissions, advertising, and show-home costs. Typical: 2–5% of GDV.
Development loan interest and arrangement fees, roughly. Varies with loan term and drawdown profile.
Development Profit
$750,000
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Last updated: September 11, 2026 · Reviewed by the DoCalc team
The Development Appraisal in Brief
A development appraisal (or feasibility) reduces a project to one key question: does the GDV justify the cost and risk? The standard structure is GDV minus all costs (land, build, marketing, finance, and other) equals profit. Both the absolute profit figure and the two ratios — profit on GDV and return on cost — are used by developers and lenders to judge viability.
The Formulas
Profit Margin Benchmarks
| Profit on GDV | Return on Cost | Assessment |
|---|---|---|
| ≥ 20% | ≥ 25% | Strong — exceeds most lender thresholds |
| 15–20% | 18–25% | Acceptable — meets typical lender minimum |
| 10–15% | 11–18% | Marginal — thin for most lenders, higher risk |
| < 10% | < 11% | Unviable — insufficient to cover risk |
Lenders (senior debt and mezzanine) typically require a minimum 15–20% profit on GDV before they will finance a scheme. This buffer protects against cost overruns, delays, and market movement during the build period.
Who This Calculator Is For
Property developers running a quick feasibility check before committing to land acquisition. Investors evaluating whether a development-based return justifies the risk and complexity vs. a straightforward buy-to-let. Finance professionals stress-testing a scheme's viability against cost escalation scenarios.
Frequently Asked Questions
What is GDV (Gross Development Value)?
GDV is the total estimated value of the completed development — the sum of all sale prices if every unit sold at full market value. For a rental project, it's the capitalised income value. It is the top-line revenue figure in any development appraisal.
What profit margin do developers target?
Most lenders require at least 15–20% profit on GDV as a viability threshold. Developers typically target 20%+ to allow for contingency. Below 15%, a scheme is generally considered marginal and will struggle to secure finance.
What should I include in "build cost"?
Include construction contract cost, professional fees (architect, engineer, project manager), planning fees, statutory consultations, enabling works, and contingency (typically 5–15% of contract). The more thorough the estimate, the more reliable the appraisal.
How is development finance cost estimated?
Development loans are drawn down as construction progresses, so true interest is lower than on a fully-drawn term loan. As a rough estimate, total interest ≈ (peak loan × rate × period) / 2. Entering 4–8% of land+build cost captures a typical 12–18 month build period at 7–10% annual interest.
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