Adelaide's Award Winning Custom Home and Renovation Specialists


Our family building for your family...

When you choose to build with ZJ Building, you’re supporting a family owned and operated South Australian business. Our team has over 40 years of combined experience in the building and construction industry. 

We are experts in renovations and extensions of heritage homes, difficult blocks and eco-friendly designs. We are committed to delivering a high-quality product along with intimate customer service. And with our streamlined processes and fixed priced contracts, the seamless integration of planning, design and construction delivers a product that truly defines who you are.

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 Skyes

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 father in a growing family. He loves his spare time with his son Sam and newborn daughter. We are proud to have Tim on our team and our clients must love him too, he gets great reviews!

Sam Herde


Sam is one of our superstar carpenter, working alongside Tim, Alex and Madison to deliver our projects. He has a background in custom home framing and brings great knowledge and expertise to our team. Sam is young and motivated and very tall, standing at 6’’5. He enjoys spending time with his wife and their two daughters on the weekends.

Alex Iannace


Alex is another of our talented young carpenters. Having had substantial experience in high end extensions and renovations, you’ll find Alex working on-site alongside Sam and Madison making sure your project is of the utmost quality! Clients love Alex’s humble and kind nature.

Madison Zarlenga

Apprentice Carpenter

Madison is our superstar apprentice and regular class clown. You’ll find him on-site eagerly learning and working alongside Sam and Alex, always lifting spirits. He’s a promising young man with a terrific work ethic, that’s why he’s been nominated for HIA’s 2021 Apprentice of the Year – wish him luck!  

Jaimee Elliott

Admin and Marketing Manager

Our newest member Jaimee is our administration and marketing extraordinaire. She’s the pillar that holds up the office team and the sunshine you see in our social media feeds. She’ll always greet you with a smile and the best part is she’s a trained barista so she can make you the best coffee you’ll ever have!

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