Building Cost Calculator Sydney
Free calculators, data tools, and guides to help you plan your construction project in Sydney
Building Cost Calculator
Get an instant estimate for custom homes, duplexes, granny flats, knockdown rebuilds & more. Tailored to your LGA and finish level.
Open Tool NewSuburb Building Stats
Explore construction costs, zoning data, council approval times, and development potential for 30+ Western Sydney suburbs.
Open Tool NewDevelopment Feasibility Check
Check if your land can support a duplex, granny flat, townhouse, or boarding house — with cost estimates and approval pathways.
Open Tool NewRenovation vs KDR Calculator
Not sure whether to renovate or knock down and rebuild? Compare costs side-by-side for your home size, scope, and finish level.
Open Tool NewDuplex Rental Yield Calculator
Estimate gross and net rental yield for a new duplex build. Enter land cost, duplex type, and expected rents to see projected returns.
Open Tool NewGranny Flat ROI Calculator
Calculate ROI, rental yield, and payback period for a granny flat build. Enter build cost, rent, vacancy — instant results for all Western Sydney LGAs.
Open Tool NewBoarding House SEPP Calculator
Check Housing SEPP 2021 compliance, estimate boarding house construction costs, and calculate rental yield by zoning and room count.
Open ToolPlanning Your Build?
Explore our comprehensive guides and insights for building in Western Sydney