Project Feasibility Calculator
What Will It Cost to Build on Your NSW Property?
Answer six short sections and get an indicative house or duplex development budget — construction, site, approvals, contributions and contingency, priced separately so you can see what actually moves the number.
Time
≈ 3 minutes
You Get
Low / expected / upper
Basis
Real cost schedule
Not
A building quotation
Step 01
Tell us about your property
The address matters. Duplex permissibility and development standards depend on zoning, local controls and site constraints — two identical designs can cost very differently on two streets.
Start typing and pick your address — we set the region from it.
Sets the regional labour and supplier adjustment.
Not sure? Start with a house — you can switch to duplex at any time and compare.
Frontage drives duplex feasibility and design options.
Building costs are still moving. Later starts carry a higher allowance.
Feasibility estimate only — not a quotation. Rates effective August 2026.