1956
De Vries Concreting is Established
Alle de Vries starts a small kerbing and concrete crew in Sydney under the name de Vries Concreting. Built on hard work, reliability and reputation, the business earns respect one job at a time.
1965
Growing a Reputation
As Sydney expands, so does demand for quality kerb and gutter works. de Vries Concreting become pioneers trialing extrusion kerb machine technology and was known for dependable delivery and strong relationships with local contractors and developers.
1968
Second Generation Steps In
1970
Expanding Capabilities
With steady growth across residential subdivisions, the business increases plant, equipment and crew size. The foundations for long-term growth are laid.
1985
THE REIGNS CHANGE HANDS
Alle semi-retires and formal ownership passes to Jack as he continues to steer the company to future growth and expansion.
1995
Broadening into Civil Works
Responding to market demand, the business begins expanding into small scale integrated civil packages including earthworks, drainage and roadworks positioning itself beyond a specialist trade contractor.
2000
A New Era Begins
Following Alle’s passing, the business continued to grow and evolve, carrying forward the values he instilled and remaining deeply rooted in the spirit of family that shaped it from the beginning.
2005
Third Generation Joins
Jack’s sons formally join the business, marking the start of a significant expansion phase. The company broadens into full large scale civil construction packages, increasing project scale and capability.
More family meetings. More boots on site.
2010
Delivering Complete Subdivisions
Devcon establishes itself as a trusted civil contractor delivering complete subdivision infrastructure including roads, drainage, services and retaining structures across NSW.
2015
Strengthening Systems & Scale
Investment in good people, systems, safety frameworks and project management processes allows Devcon to take on increasingly complex projects for leading developers and public sector clients.
2020
Building Through Change
Through one of the most challenging periods in modern construction history, Devcon maintains delivery momentum while supporting staff, subcontractors and clients across multiple active sites.
Major Residential Projects Delivered
Devcon contributes to significant residential communities including large-scale land developments in Sydney and New South Wales’ growth corridors, delivering critical infrastructure that enables future housing.
Pre-qualifications and strategic partnerships with NSW state government agencies facilitate the ability to reliably deliver large scale land developments.
2026
A New Look for a New Era
Devcon marks the 70 year milestone with the launch of a refreshed logo and brand identity.
The new logo reflects the evolving world around us: smarter infrastructure, changing communities, modern delivery methods and a new generation stepping forward. It signals confidence, clarity and momentum while remaining true to the foundations laid in 1956.