At G5 Projects, we deliver high-quality commercial construction projects with a strong focus on solutions, certainty, and lasting relationships. We work across education, healthcare, retail, refurbishment and fit-out sectors, providing tailored construction outcomes that respond to the unique needs of each project.

Introduction

Delivering Complex Projects

Established in 2017, G5 Projects was formed to meet a clear gap in the Adelaide market — the need for a smaller, highly professional team capable of delivering complex projects with hands-on leadership and accountability. Originally supporting our long-standing partners at Kennett Builders, G5 Projects has since grown into an independent and trusted construction business with its own identity and capability.

We are fundamentally solutions-driven. Our projects often involve complex interfaces, live environments, heritage considerations and tight timeframes. G5 Projects takes ownership of these challenges, applying practical expertise, clear methodology and proactive problem-solving to ensure issues are resolved efficiently and outcomes consistently exceed expectations. We pride ourselves on transparent communication, collaborative delivery and mutual respect with our clients, consultants and contractors. Our approach creates trust, drives better project outcomes and is why many of our clients choose to work with G5 Projects time and time again.

Our Team

John McCulloch

General Manager

A seasoned construction leader with over 30 years’ experience delivering commercial, industrial, residential, heritage and specialist projects across Australia. Known for a calm, solutions-driven leadership style, John brings strong technical, contractual and project management expertise to consistently deliver high-quality outcomes.

Chris Engelbrecht

Project Manager

A highly experienced Project Manager with 20 years’ experience delivering commercial, aged-care, heritage, hospitality, retail and specialist infrastructure projects across Australia and international markets. Chris is recognised for his methodical approach, strong planning capability and ability to lead multidisciplinary teams to deliver safe, efficient and high-quality project outcomes.

Glen Duncan

Project Manager

Bringing more than 30 years of industry experience, Glen has delivered complex commercial, industrial, heritage and community-sector projects across South Australia. Glen's background spans from carpentry through to senior leadership, enabling a practical approach supported by clear client communication, strong planning discipline and a consistent focus on quality, safety, programme and budget outcomes.

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Contact

Solutions

At G5 Projects, we are fundamentally solution oriented. We take the time to understand each project’s unique requirements and apply practical construction expertise to develop tailored, buildable solutions. Our calm, considered approach allows us to manage complexity and resolve challenges with confidence.

We take responsibility for delivering outcomes that meet — and exceed — expectations. Through hands-on leadership, disciplined project controls and a strong focus on quality, we consistently deliver projects that are safe, well-managed and completed to a high standard.

Building strong, genuine relationships is central to how we work. We prioritise open, transparent communication and a collaborative approach with our clients and contractors, ensuring clarity, trust and alignment throughout every stage of the project.