Adelaide's Award Winning Custom Home and Renovation Specialists


Who is ZJ Building?

ZJ Building is more than just a building company, we are a family owned and operated, South Australian business passionate in personalising your building experience and educating you about our industry. We are specialists and experts in renovating and extending Adelaide homes with custom designs and a unique experience. Whether you’re interested in updating your kitchen or bathroom to suit your own personal style, need to extend to add some more room for your growing family or simply would like to explore your option in outdoor entertaining, ZJ Building is your one point of call for design, approvals, building work and management for all your building and renovating desires.


Meet the team!

Zakery Johnson
Owner/Director/Master Builder

After starting his carpentry apprenticeship in January 2007. He immediately fell in love with the trade and all the opportunities to build and create. He gained a lot of experience in all aspects of the building trades including supervising architectural custom home builds and small commercial projects. After recognising a gap in the industry with a lot of builders lacking in customer focus during projects that closely involve the homeowner, Zak found himself with an opportunity to create something truly unique. With a passion to deliver high quality projects and improve the lifestyles for South Australian homeowners, he started ZJ Building in 2015 and has been transforming homes ever since. With a strong drive for self improvement and professional development, Zak continues to evolve and improve the company. From building strong systems and processes for our customers benefit to proudly running a virtually paperless office, the future of ZJ Building is always looking bright.

Jacqueline Johnson
Office Manager

Behind every good builder is his wife! Jacqui is constantly working behind the scenes to develop and promote ZJ Building. She works side by side with Zak to deliver the same strong passion and building excellence to our clients. Her bubbly and friendly nature perfectly compliments her husband to bring you the brains and beauty behind ZJ Building.

Tim Sykes
Project Manager


ZJ Building leans on Tim and his expertise in cabinetry, joinery and kitchens. He is our project manager and helps coordinate the smooth process of a building project. His background from high end, architecturally designed kitchens and joinery with specific details keeps his eyes sharp on the job. He is a friendly face and a loving husband and father. We are proud to have Tim on our team and our clients must love him too, he gets great reviews!

Sam Herde

Sam is our junior carpenter and works alongside Tim to deliver our projects. He has a background in custom home framing and brings great knowledge and expertise to our team. Sam is young, motivated and very tall, standing at 6’’5 but is a big teddy bear! He enjoys spending time with his wife and their two daughters on the weekends.


Whether you have a dream of living in a beautifully designed custom built home, you desire to transform your home with extra space or you crave an elevated lifestyle through updated design and functionality – we are the team you need!

We offer a full design and construct service, completely personalised to suit your desires. We can assist you with concept plans, construction drawings, selections and the erection of your project. We have demonstrated without a doubt that we can deliver unparalleled quality of build through our material selection, attention to detail, subcontractor vetting, project management, quality control systems and creative solutions.

Our process is honest. It allows for your need to express your style into the design during planning, and install your flare into the details during construction. Limiting our projects to a select number per year allows us to ensure that we maintain our high standards of customer service and attention to detail. With ZJ Building, you won’t be left out. We use the latest technology to utilise a completely online system where you are in control. 

To learn a little bit more about us, click play below!

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