New Homes, Extensions and Renovations QUOTING TOOL

Know the Real Cost of Your Dream Home, Before You Talk to a Builder

Our tool gives you a builder-quality estimates, created with real data, verified by industry experts, and tailored to your project type. Meet B4U Build, Australia’s most accurate renovation cost calculator and home building cost estimator, trusted by 15,000+ homeowners.

Get Your Estimate

pricing tool

Why Homeowners Feel Stuck

Most homeowners go into builder meetings blind, no idea what a renovation, extension, or new build actually costs. You get quotes that vary wildly, you can’t compare options, and you can’t tell if you’re being overcharged. Without a reliable home renovation calculator or house building cost estimate, it’s almost impossible to budget smartly, plan confidently, or know when a quote is fair.

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Built by Builders, for Homeowners

The smarter, safer way to start your home project. Get builder-quality estimates with our house cost estimator, without needing plans. B4U Build is created by builders using real data, verified by industry experts, and tailored to your project type.

Accurate, realistic builder estimates

Compare options: rebuild, extend, or renovate

Itemised cost breakdowns (no hidden extras)

Budget smarter and avoid overcapitalising

THE PROCESS

How B4U Build Works

B4U Build allows you to design your home to your budget
With a simple step by step process, you can create your home within your budget and keep adjusting until you are happy with both the build brief and the budget.

Click through the steps below to see our process

Choose your project type

Start by telling us what you’re planning – a renovation, an extension / addition, or a new home — so we can set everything up for you.

Add your project & site detail

We’ll ask a few basics about your site, budget and the level of finish you want so the estimate makes sense. Our home construction cost estimator factors in site conditions, inclusions, and finishes to calculate a realistic budget.

Choose your spaces

Pick the rooms and features in your project – bedrooms, kitchens, living areas and more. You can add, remove or change these anytime.

View your instant estimate

Get a detailed renovation cost estimate or house building calculator result in under 3 minutes. See total projected costs broken down by category.

Download your brief

Export your cost report and builder brief. Walk into every conversation with a builder armed with a completed home building calculator summary ready to share with your builders and designers.

Discover more about how B4U works

In the long run it saved me time and money and simplified the process.

Pete, Consumer

Step into the future with B4U Build

Step into your future with B4U Build. As not just a builder, but a father, I understand the challenges that come with turning dreams into reality. As you embark on this journey, know that you’re not just estimating costs; you’re crafting lifestyle solutions.

You’re not alone in this – the entire B4U Build team take personal ownership of your vision. Whether you’re working out the cost of building a house in Australia or planning an extension or renovation, together we’re scripting the story of a successful transformation.Together, we’re scripting the story of a successful transformation. Your dream space is just an estimate away from becoming a reality. If you have any questions, feel free to reach out.

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Start your project the smart way — with clarity, not confusion.

Get Your Estimate View pricing

Why choose B4U Build?

15,000+

Homeowners have used our renovation calculator Australia to plan their build.

5-10%

5–10% Accuracy The most precise free house building cost calculator available

3 minutes

to create a full estimate

3

major industry features – Three Birds, The Australian Builders network & The Good Builder Podcast

1

tool that helps you get a clear estimate

For Builders & Contractors

Stop Wasting Time.
Start Building Smarter.

B4U Build’s white-label home building calculator puts your brand front and centre, and delivers pre-qualified leads who already know their budget. Add our estimation tool directly to your website and give to a renovation costs calculator result the moment they enquire, reducing back-and-forth before quoting. Capture qualified leads while providing instant value to potential clients. No development required.

White-label embedding on your website

Instant Budget Feedback

Generate qualified leads automatically

Real-time client collaboration

Learn more about B4U for Builders