Home Extensions in Perth That Feel Like They Were Always There

When your family has outgrown your home but you love where you live, an extension is often the smartest move. RBJ Home Improvements designs and builds extensions across Perth that blend seamlessly with your existing home.

More Space, Without Leaving the Home You Love

Moving house is expensive, stressful and uncertain. A well-planned extension gives you the space you need while keeping everything else you’ve built, your neighbourhood, your schools, and your community.

At RBJ Home Improvements, we’ve been building extensions and additions for Perth families for over 40 years. From a single-room addition to a full second storey, we handle the whole project from planning through to handover.

Why Perth Families Choose RBJ for Their Extension

Extensions that match your existing home

Getting an extension to look and feel like part of the original build takes skill and attention to detail. We’ve been doing it for 40 years, and we take that part of the job seriously.

Full project management from day one

We handle design consultation, council approvals, engineering, construction and all trade coordination. You have one point of contact and one team accountable for the whole job.

Honest advice on what will and won't work

Not every extension idea is structurally or financially the right call. We’ll tell you honestly what works for your home and your budget and suggest alternatives where needed.

Experience with Perth homes of all ages

Older Perth homes come with quirks that can catch less experienced builders off guard. We know what to look for and how to plan around it so it doesn’t become a problem mid-build.

A result worth the investment

A quality extension adds real value to your property. We build with that in mind, using quality materials and tradespeople whose work stands up over time.

What We Take Care Of

Initial consultation and project scoping
Design advice and conceptual drawings
Council and shire building permit applications
Energy efficiency and engineering assessments
Site preparation and foundations
Structural build including carpentry, brickwork and roofing
Loft conversions and upper storey additions
Single and double storey extensions
Room additions including bedrooms, living areas, studies and more
Coordination of all trades including plumbing, electrical and tiling
Internal fit-out and finishing
Building inspections throughout
Final handover walkthrough

Is a Home Extension Right for You?

An extension with RBJ is a great fit if you:

Need more space but love your location and don’t want to move
Have a growing family and need extra bedrooms, living areas or a dedicated workspace
Want to add a second storey to maximise your block
Have an older Perth home with unused potential
Want a builder who will manage the entire project without you having to coordinate trades yourself

Not sure whether an extension or a full renovation is the better option for your situation? We’re happy to talk it through and give you an honest recommendation based on your home and your goals.

FAQ

Do I need council approval for a home extension in Perth?

In most cases, yes. Structural additions, second storey builds and anything that changes the footprint or height of your home will require a building permit. We manage the full approvals process on your behalf.

Can you add a second storey to my existing Perth home?

Yes, second storey additions are something we have extensive experience with. We’ll assess your existing structure, manage the engineering requirements, and build an upper storey that integrates properly with what’s already there.

How long does a home extension typically take?

It depends on the size and complexity of the project. We’ll give you a realistic timeframe during your free quote consultation, along with a clear picture of what to expect at each stage.

Will the extension match my existing home?

Matching materials, finishes and style to your existing home is something we take seriously. We’ll discuss this with you during planning and make sure the end result looks intentional, not tacked on.

Ready to Make More of Your Home?

If you’re thinking about adding space to your Perth home, we’d love to hear about it. Get in touch for a no-obligation chat and a free, honest quote from a builder who’s been doing this for over 40 years.

Or call us on 0419 998 660, we’re happy to talk through it.