Who we are

Cooper & Jones Plumbing

40 Years of Excellence

Cooper & Jones Plumbing work alongside Perth’s largest commercial builders to provide WA’s leading hydraulic & civil draining solutions that go above and beyond our clients needs. We have been proudly operating in WA for over fourty years and are proud to be 100% Western Australian owned and managed. 

We pride ourselves on our highly skilled, diverse and powerful team. Our supportive culture has allowed us to craft a team of experts who’ve stayed with the company for over a decade. Additionally, our strong affiliation with the Master Plumbing Association ensures we’re assisting in the crafting of quality WA tradespeople.

What We Stand For

Diversity: We’re proud to have a diverse team at Cooper & Jones. The variety of backgrounds has allowed us to create a supportive and nurturing environment.
Loyalty: The quality of our culture can be shown by the longevity of our employees, with many exceeding ten years with the company.
Family Friendly: At the end of the day, family comes first. We’re proud to have a workplace that supports West Australian families.
Community Oriented: We support upcoming tradespeople by offering work experience and placements with the Master Plumbing Association and several schools.
West is Best: We’re 100% Western Australian Owned and proud to have been operating in this exceptional state for over forty years.

Our Team

Larry Watson

Managing Director

Kylie Treacy

Financial Controller

Mark Jansen

Project Manager

Troy Gatt

Project Manager

Martin Tilley

Project Manager

Mark Hammond

Project Manager

Kiel Tilley

Business Development Manager

Liam Purdy


What Our Clients Say

Cooper & Jones Plumbing' have been supplying and providing of hydraulic works for 'Giorgi Group' for approximately the last 30 years. We have always found Cooper & Jones Plumbing to be very co-operative and professional in every aspect. Cooper & Jones have consistently provided a high-level of service for Giorgi Group, routinely completing their work on time. We highly recommend their services.

Giorgi GroupGuido Giorgi - Managing Director

Cooper and Jones Plumbing has a long history of working on our projects and they have never let us down. From their site staff to their senior management they are always there to assist and to make our life as a builder that much easier. Honest, organised, efficient and proactive are just a few words we would use to describe them.

Universal ConstructionsChris Patten - Construction Manager

Acu-Tech Piping Systems are a WA owned pipe manufacturer, specialising in water, gas and fire service pipe. We have been working closely with Cooper and Jones for over 20 years. They are a leading, highly professional commercial plumbing company who focus on quality and expert workmanship. Together we have delivered many successful projects.

Acu-Tech Piping SystemsIvan Morren - CEO

Cooper & Jones are a well organised professional plumbing company that are dedicated to ensuring successful outcomes on projects. It is this approach that makes them a plumbing contractor of choice and a pleasure to work with time and time again.

PACT ConstructionJonathan Wilson - Project Manager

It’s great to see Mike leading and mentoring a committed team of young plumbers and apprentices on site, and the resultant high quality of work and pride in their workmanship that they are producing. So it fantastic to view first hand a group of young plumbers who are so committed to their trade.

Jacobs CWN Hydraulic and Fire ServicesDavid Belcastro - Team Leader

Cooper and Jones are a valued long term supporter of Capstone Construction. As an organisation they take pride in their work and always deliver a high quality product

Capstone ConstructionMatt Lucarelli

We have worked closely with the team at Cooper & Jones for over 20 years now across a wide range of projects, including highly complex systems, and are impressed with the professionalism, thoroughness and quality of tradesmanship evident in their work!

Allied PumpsPhil Smith - Business Development Manager

Cooper & Jones Plumbing have undertaken numerous large and complex projects designed by Hydraulics Design Australia for over 20 years. Cooper & Jones have consistently delivered high quality plumbing installations with a level of workmanship, management expertise and professional service that is second to none. The Directors of Hydraulics Design Australia consider Cooper & Jones Plumbing to be one of the best commercial plumbing contractors within Western Australia and would have no hesitation in recommending Cooper & Jones Plumbing to undertake projects of any size, nature and complexity.

Hydraulics Design AustraliaQuentin Oma - Director