CJ Duncan and Johns Lyng Group unite in strategic partnership, bringing together over a century of industry excellence

News December 1, 2025

With over 45 years of proven expertise, CJ Duncan is now backed by Johns Lyng Group, a powerhouse with 72 years of success. Together, they’re strengthening the CJ Duncan legacy and expanding its capabilities for the future.

CJ Duncan, a trusted name in remedial building for more than four decades, has announced a new strategic partnership with Johns Lyng Group. This milestone marks the beginning of an exciting new era for CJ Duncan, combining its proud heritage, strong reputation, and specialist expertise with Johns Lyng Group’s national scale, resources, and operational capability.

Together, the two companies bring over 117 years of combined experience to the building and construction sector. This partnership positions CJ Duncan to accelerate its growth, enhance its service offering, and deliver even greater value to clients, staff, and the wider community.

Legacy & Trust – A History of Excellence

CJ Duncan has built a trusted reputation over 45 years for quality, reliability, and strong client relationships. The partnership represents a natural evolution, reinforcing CJ Duncan’s legacy with Johns Lyng Group’s 72 years of operational experience.

With more than a century of combined history in remedial and construction services, CJ Duncan and Johns Lyng Group unite shared values of integrity, professionalism, and excellence. The existing CJ Duncan team and leadership remain in place, ensuring complete continuity for all clients and partners.

Vision for the Future

With the backing of Johns Lyng Group, CJ Duncan gains new strategic capability. Their reputation and market presence in Sydney were key factors in forming the partnership, offering a strong platform for future expansion and regional growth.

The partnership increases capacity to take on larger and more complex projects while ensuring long-term stability for both staff and clients. It represents an exciting new chapter for CJ Duncan as it continues to lead with confidence and deliver excellence in the remedial building sector.

Committed to Transparency

The partnership strengthens CJ Duncan’s capability while maintaining compliance with industry standards and competitive processes. CJ Duncan will continue to operate independently and transparently, upholding its long-standing commitment to fairness across all client engagements.

Empowering our People

CJ Duncan remains committed to the people and culture that have shaped its success. The dedicated team and leadership will continue to deliver the same high standards of service clients know and trust.

Whilst team and leadership remain unchanged, the partnership brings fresh opportunities for staff while maintaining the values and standards that define the business.

Ben Duncan, Managing Director – CJ Duncan shares:
“Our people are at the heart of CJ Duncan. This partnership ensures our team can continue doing what they do best, supported by greater opportunities for the future.”

Strengthening Client Confidence

Clients can expect no disruption to projects or services – CJ Duncan remains committed to reliable delivery and trusted outcomes.

With Johns Lyng Group’s support, CJ Duncan now has an even stronger foundation to deliver future projects at scale, ensuring long-term confidence for clients, staff, and the community.

Ben Duncan, Managing Director – CJ Duncan adds:
“Our clients and community can expect the same trusted service they know us for, now strengthened by the added scale and stability this partnership provides.”

The strategic partnership between CJ Duncan and Johns Lyng Group marks a milestone in the evolution of both businesses. United by shared values and a combined legacy of more than 100 years, the partnership builds on a proud history while opening a new era of opportunity, growth, and excellence across the Australian building industry.

Further details: the proposed partnership between the parties is expected to complete in the first half of 2026 subject to, among other things, clearance from the Australian Competition and Consumer Commission and approval by the Foreign Investment Review Board.