Learn more about sustainable energy efficient homes

Find a sustainable home for you and your family that’s warm in winter & cool in summer

Unlock our prices for energy-efficient homes in the Blue Mountains & Western Sydney – including bushfire zones and passive house estimates

The most sustainable & energy efficient homes in the world

We’re sustainable house builders, specialising in award-winning architectural homes.
Are you looking for a unique home that’s energy efficient? Passive House we use features, modelling & accreditation to achieve extraordinary results which have been shown to perform the best in the world. We’ll help you achieve what you want – be it a zero carbon home, low VOC materials, solar passive design, Passive House, just let us know what you’re after.

Building passive homes the Blue Mountains, Hawkesbury & Western Sydney areas.

We take pride in building a community of happy clients who we still enjoy catching up with, for years after we’ve finished building.

Our Expertise and



Is vital for us. We quality-check every stage of building. We use professional trades and high quality materials


An energy-efficient homes means they feel warm in winter and cool in summer, with lower power bills and carbon footprint


Your home is guaranteed to last. Ask us about our guarantee

Let us be a part of your journey in making your dream home come true.

Sustainable House Builders Blue Mountains & Western Suburbs

Split Building believes that close communication between a builder and the homeowner is the key to a successful home construction project. We work closely with our clients to get their design ideas, special requests, and specific needs to be able to create their dream sustainable home. We treat every project as ours so you are guaranteed to have us on your side from start to finish.

We always work with the best suppliers and professional subcontractors that share our value for delivering excellence in everything that we do.

Welcome to Country

Split Building acknowledges and respects Aboriginal and Torres Strait Islander Peoples across Australia as the Traditional Custodians of our lands, waters and seas. We:

Recognise their unique ability to care for Country and their deep spiritual connection with Country.

Honour Elders past, present and emerging, whose knowledge and wisdom will ensure the continuation of Aboriginal and Torres Strait Islander cultures, and the values which uphold them.

Recognise and respect Aboriginal and Torres Strait Islander Peoples as the oldest continuous living cultures in the world. We acknowledge the Traditional Custodians for their wisdom, insight and connection to the land, waters and seas – the same land, waters and seas which are a central focus of our profession.

‘Welcome to Country’ and ‘Acknowledgement of Country’ is more than just a statement for us. It is with our heart and being that we want to extend our deepest respect to our Traditional Custodians, their communities and Country.

Why Work With Us

Split Building has been building dream homes in the Blue Mountains and in the Western Sydney for over 25 years. Building custom homes with integrity means being upfront and honest and having an eye for details. We value word of mouth so our reputation in our community means we always we’re always here to answer questions or do anything for our clients.

All of our partner suppliers and contractors are professionals and work the same way we do.
We value our client’s experience above anything else. Which is why having high quality standards for custom-built homes in the Blue Mountains and Western Sydney suburbs, is vital for your happiness and ours.