About BuildBudget
Free tools and honest data to help Australians figure out if they can afford to build.
Building cost information should be free and honest
We noticed that most building cost information in Australia is either locked behind paid publications, buried in confusing builder quotes, or hopelessly generic. Homeowners planning their biggest financial decision were left guessing.
So we built free tools that give you honest, suburb-specific, up-to-date cost estimates — along with guides explaining grants, stamp duty savings, and how the building process actually works.
Tools & Guides for Every Stage
Build Cost Calculator
Personalised estimates by suburb, finish level, and home size. Updated quarterly.
City Cost Guides
Detailed breakdowns for Melbourne, Sydney, and nationally. Real market data.
Grants & Stamp Duty
FHOG eligibility by state, stamp duty savings when you build instead of buy.
Find out what your dream home will cost
Free calculator — no signup, no email required
Try the Calculator
Data from 50+ Australian builders
Updated quarterly to reflect market conditions
Real numbers from real builders
Our cost estimates are based on Q1 2026 market data sourced from multiple Australian builders, quantity surveyors, and industry bodies. We update our data quarterly to reflect current market conditions.
All cost estimates are indicative. Actual building costs depend on your specific block, design, builder, and market conditions. We always recommend getting 3+ builder quotes for your specific project.
Contact Us
Questions, corrections, or suggestions? We'd love to hear from you.
hello@buildbudget.com.auBuildBudget is a project of Buk Technology. ABN to be registered.