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One Design and Construct is the winner of Master Builders WA Housing Excellence Award 2023 & 2022 for the Alterations and Addition.

$300,000 - $430,000 (2023) and $230,000 - $300,000 (2022) categories.

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.