Newcastle's House Extensions Specialist

House and Building Extensions Service

Need more space at home or looking to grow with your lifestyle instead of moving? At Altered Building and Renovations, our House and Building Extensions service helps you create the extra room you need, designed to suit your home and how you live. From larger living areas and additional bedrooms to home offices and sunrooms, we turn ideas into practical, well-designed spaces.

Whether you’re planning a modern extension, a traditional addition that feels like it has always been part of the home, or something more distinctive, our team has the experience to deliver it. We manage the full process from design and planning through to approvals and construction, keeping things clear and straightforward along the way.

An extension is an investment in both your home and your future, giving you more usable space without the stress of relocating.



Get in touch with Altered Building and Renovations to talk through your extension project and start planning your extra space.

Why choose Altered for your build

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Experienced, local builders delivering exceptional results

Our local experience ensures smoother approvals, practical design decisions and results that suit the local lifestyle.

Experienced, local builders delivering exceptional results

Every build is completed with a strong focus on quality materials, attention to detail, and professional trades. 

Experienced, local builders delivering exceptional results

Our clients value our transparent quoting and hands-on approach, giving you confidence at every stage of your project.

Jessie and the Altered Building team were the perfect choice. His communication and quality of work were outstanding, and the whole team was incredibly helpful, flexible, and friendly. They guided us in making smart decisions while keeping us on budget. Managed other trades exceptionally. Most of all, I really felt safe with these guys and trust them to carry out high quality work. We’ll definitely be using them again!

Evan, Mayfield

We couldn’t be happier with the incredible outdoor oasis that Jesse and team have created for our family. From start to finish, the team was professional, reliable, and an absolute pleasure to work with. They took our vision and brought it to life with thoughtful design, top quality workmanship, and attention to every detail. We highly recommend Altered Building and Renovations to anyone looking for high quality construction with genuine care for their clients.

Leonnie, Maitland

Happy to recommend Jesse and the team from Altered. They did a brilliant job at our house this year building a pool deck in a tricky yard (sloped & lots of council conditions) plus fencing, retaining walls and remodeling our pergola. The whole team were always professional, punctual & reliable. Leaving everything neat and tidy and being respectful of the rest of our property and our neighbours. They made the experience stress-free and we will definitely be using them again for our next few projects. Happy to recommend to anyone.

Elaine, Belmont