Calculators / Interactive tools
Free real estate development calculators.
Decision tools for testing land, cost, funding, sales, rental income, and exit assumptions before they become expensive commitments.
Playbook
Decision tools / Free calculator suite
Land · Capital · Design · Delivery · Operations
Calculator hub
Which calculator should you use?
Use the calculators as a development workflow: screen the site, test the land value, shape the product, stress the cost, check the funding gate, then compare the exit strategy.
Each tool is free to use and designed as a transparent first-pass decision aid, not a black-box valuation.
Development Feasibility Calculator
Test revenue, cost, finance, timing, and return assumptions in one clear development view.
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Rental Yield Calculator
Move from headline rent to net yield with allowances for vacancy, service charge, and operating cost.
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Land Residual Calculator
Estimate the land value a project can support after development costs and target returns.
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Construction Cost Sensitivity
See how cost escalation and specification choices affect margin and required selling price.
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Apartment Mix Optimizer
Compare unit mixes using saleability, efficiency, rental demand, and gross development value.
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REIT Acquisition Screener
Screen income assets for yield, lease quality, concentration, and capital expenditure risk.
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Rent vs Buy Investment Test
Compare buying a home with renting and investing the difference over a chosen holding period.
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Build-to-Sell vs Build-to-Rent Comparator
Compare selling units with holding the same project as a rental asset using NOI, exit value, and margin.
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Site Acquisition Go/No-Go Calculator
Screen a site using price discipline, title, planning, access, utilities, market evidence, and approval risk.
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Pre-Sales Requirement Calculator
Estimate the binding pre-sales needed before construction start using lender, funding, deposit, and sales-velocity tests.
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Development workflow
01
Acquire
Screen a site, test land value, and decide whether the opportunity deserves serious due diligence.
02
Shape
Test apartment mix, development feasibility, construction costs, and the pricing logic of the project.
03
Fund
Estimate how much must be pre-sold, what the lender may require, and whether construction start is supportable.
04
Exit
Compare selling, renting, holding income, acquisition screens, and buyer/investor decisions.
Guides
Read before you model.
Rent vs buy: when renting and investing beats buying
A buyer/investor guide to comparing home ownership with renting and investing the difference.
Read guide →How many units must be pre-sold before construction starts?
A development guide to pre-sales thresholds, lender conditions, funding gaps, deposits, and sales velocity.
Read guide →Questions / Method
How to use these calculators.
What are real estate development calculators?
Real estate development calculators are decision tools that translate assumptions about land, cost, sales, rent, funding, and timing into outputs such as feasibility, land value, margin, required pre-sales, yield, and go/no-go signals.
Which calculator should I use before buying land?
Start with the Site Acquisition Go/No-Go Calculator to screen control, planning, access, market, and price discipline. Then use the Land Residual Calculator to estimate the land value a project can support.
Which calculator should I use before starting construction?
Use the Development Feasibility Calculator, Construction Cost Sensitivity Calculator, Apartment Mix Optimizer, and Pre-Sales Requirement Calculator before construction start. Together they test margin, cost pressure, product mix, funding cover, and sales readiness.
Are the calculators investment advice?
No. They are educational decision aids. They make assumptions visible and help structure judgement, but they do not replace valuation, legal, tax, planning, technical, lending, or investment advice.
Tool outputs are decision aids, not investment advice. Use them to structure judgement before seeking project-specific valuation, legal, tax, planning, lending, or technical advice.