Free tool

Run your own feasibility. Free, unlimited.

The same framework we use to assess every site we look at. Sign up for a free account and run as many scenarios as you like.

What it does

Real assumptions. Honest verdict.

Most feasibility tools are designed to make a deal look better than it is. They use optimistic build costs, ignore holding costs, and assume best-case sale prices. Ours doesn't.

We built this calculator to give a quick, honest read on whether a development site stacks up financially. It uses the inputs that actually matter, applies conservative assumptions where there's uncertainty, and tells you clearly where the project lands: proceed, borderline, or walk away.

There's no magic here. It's arithmetic applied carefully. The same arithmetic every experienced developer runs before committing to anything.

01
You're assessing a site you've found

Plug in the land price, expected build cost, and likely sale price to see if the numbers actually work before you get attached to the idea.

02
You want to understand how development works

Run a hypothetical to see how changing one variable (land cost, build cost, end value) and how it changes the margin. It's the fastest way to build intuition for the numbers.

03
You're stress-testing a deal

Run the calculator on best case, worst case, and most likely case. If it only works in the best case scenario, that's important information before you make an offer.

A note on assumptions

The calculator applies cost assumptions based on typical Sunshine Coast development conditions: professional fees, holding costs, contingency, and sales costs. You can adjust inputs to reflect your specific situation. If a deal only works when you strip out contingency and assume zero holding costs, it probably doesn't work.

What it covers
InputLand cost
InputBuild cost
InputGross realisation (GRV)
InputDevelopment type
CalculatedProfessional fees
CalculatedHolding costs
CalculatedContingency
OutputDeveloper profit & margin
Free · Unlimited use

DevelopSURE Feasibility Calculator

Get a clear read on whether your site stacks up. Takes about 3 minutes.

Development type Subdivision / Units
Land cost $ ___,___
Build cost $ ___,___
Gross realisation $ ___,___
Your verdict Proceed / Borderline / Walk away
Disclaimer: This calculator is a general guidance tool only. DevelopSURE is not liable for any financial decisions you make based on the results. Always seek independent professional advice before making any investment or financial decision.
Sign up free & start calculating →

Create a free account to access the calculator. Takes under a minute.

Questions?

If you've run the numbers and want to talk through what they mean, or if you're looking at a site on the Sunshine Coast, get in touch.

jessica@developsure.com.au
Common questions

Things people ask before they run the numbers.

Is this calculator really free?

Yes. Just create a free account and you get unlimited access. No credit card, no upsell. We built it because access to good tools shouldn't be gated behind a program fee. Run as many scenarios as you like.

What types of development does it cover?

Subdivision and unit development: the two most common small-scale development types on the Sunshine Coast, and the ones we have the most direct experience with.

How accurate are the cost assumptions?

They're designed to be conservative, not aspirational. Professional fees, holding costs, contingency, and selling costs are applied based on our own project experience. You can adjust inputs to reflect your specific situation.

Can I use the result to make a purchase decision?

Use it as a starting point, not a final answer. A feasibility calculator gives you a directional read. Follow it with detailed analysis and a conversation with a town planner, QS, and solicitor before making any offer.

Ready to run your numbers?

Sign up free and start your first feasibility today.

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