About Us

Devcon Civil Pty Ltd

Devcon is a third generation family owned and operated company with decades of experience in roads, civil, concrete, drainage, kerb & gutter and associated works. Through the proficient delivery of the projects we undertake, Devcon has established itself as a highly professional company delivering on-time, high quality outcomes in this demanding market.

The business was originally established in the 1950's by Allen De Vries. Allen had a reputation as a hard worker and delivering exceptionally high quality. His son Jack joined him in the 70’s and as Jack built on the business the reputation for high quality grew even further.

During the 90’s Gavin and Matthew joined Jack and then took over from Jack in the following decade, with brother Simon also joining the team.

The key attitude that drives the team is one of professionalism. This is a niche that was identified as being of high importance to this industry and one that is conspicuous by it’s absence. Through high levels of communication and relationship building Devcon sets itself apart as a company that our clients ‘want’ to deal with. Quality is of equal value to professionalism.

The prevailing motto which we abide by and which is drilled into all staff is:

“Would I be proud of this job if it were at my place?”


With the high standards we set for ourselves, you can be confident that your project will receive the attention and attitude it deserves. After all, it’s your project. Why risk using anyone else?

Our Vision

Our company boasts a management team that has years of hands-on experience, Devcon is in a position to undertake all types of civil projects throughout Sydney and surrounds.

We are well along the process of gaining pre-qualification with the Civil Contractors Federation, which will provide extra confidence for all of our stakeholders. At the forefront of all that we do, is a desire to be professional, offer outstanding communication, and client satisfaction.

We will achieve this through:
  • Acting fairly and with integrity
  • Recognising our clients needs and integrating these with the needs of our staff, consultants, subcontractors and the community
  • Being commercially competitive
  • Giving priority to quality
  • Encouraging a performance driven culture
  • Creating a safe, challenging and fun workplace, balanced with time for family and recreation
  • Making meaningful contributions to our local and international community

What our clients say?

  • The work was undertaken in an efficient manner with the projects running on time and the people that were involved with the projects were experienced and efficient with their work.

  • You have a great business that many larger companies would give anything to have 10% of your X factor

  • In all instances I found Devcon to be co-operative and professional in their approach to the work undertaken.

  • The work was done quickly and with great care and the end result was exceptional

  • ...every task was done with a smile and a great attitude.

  • Devcon have brought to our site more the X factor than just one thing. That thing that you cannot put your finger on but it's something, for me it’s the family business attitude that I will remember, and the ability to make us feel like we were the most important client in the world every day."

  • I look forward to working on other projects with Devcon.