Over 30 Years of Experience


Main Flow has been working in the civil and plumbing sector for more than 30 years. Founded by two brothers, Mainflow was built on family values and quality workmanship. Now run by the second generation who still live the same ethics.

Personalised Service

Complete transparency and quality of our work on each and every project we undertake.

Licensed & Certified Team

Mainflow are Sydney Water accredited, licensed and certified and a preferred civil contractor in Sydney

Delivery and Stability

Conducting works in a timely and reliable manor is what we do best at Mainflow.

Competitive Pricing

We believe in transparency so you’ll get the best price first time around on tenders and quotes.

Sydney Water Contractor

With a focus on efficiency, reliability, and compliance with Sydney Water standards, we ensure that projects are completed to the highest standards of quality and safety.

Civil & Infrastructure

Our Civil and Infrastructure division is dedicated to delivering comprehensive solutions tailored to meet the evolving needs of projects.


Mainflow Plumbing services encompass a comprehensive range of solutions tailored to meet the diverse needs of residential, commercial, and industrial clients

Engineering & Design

Our civil engineers apply principles of mathematics and physics to solve problems related to these structures, ensuring they are safe, durable, and sustainable.

Our Clients

Discuss Your Civil and Plumbing Needs With US

Please feel free to contact us with any questions and queries you might have. We are always happy to hear from you.