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what we do

Multi Award Winning Renovation & Extension Builder in Western Australia

Extension & Addition

One Design and Construct is a multi-award winning extension and addition builder in Western Australia.

Kitchen Renovation

If you could visualise your dream kitchen John and his team at One Design and Construct can build it for you.

Bathrooms & Ensuite

With an extension and re-modelling of your home, why not include new bathrooms and ensuite to your master bedroom.

3×1 to 4×2 Home Conversion

We are specialists in converting simple 3 X 1 houses into intelligently designed 4 bedroom, 2 bathroom homes, complete with master ensuite and garage all wrapped up with exceptional quality craftsmanship and finishes.

Alfresco & Patio

Invest in your outdoor living space that’s both functional and beautiful. Imagine relaxing on your spacious deck, or entertaining guests on your stunning, fully equipped patio.

Commercial & Community Building Maintenance

We provide professional upgrade and renovation services for commercial and community facilities. Building needing some face lift? Talk to us.

Extension & Addition

Your character home lacking space to accommodate growing family? Why not extend at the back of the existing residence. Or it is possible to convert carport into an additional room and also have a lock up garage. Your 3×1 can be transformed to 4×2 home.

Renovation &

If you can visualise your new kitchen, laundry, and bathroom John and his team can turn your dream into reality.

Latest News

New projects, progress and updates from the One Design and Construct team.

  • Just a quick update on One Design and Construct community support for Junior Football. We, like everyone else, were just thrilled to get involved with...

  • As always here at One Design and Construct, things only seem to get busier, but we never let work get in the way of helping our community. Once again ...

  • Mel and Rys loved their two-story Kardinya home but, like all homes, it got a little tired over the years. Plus, families grow, attitudes and lifestyl...