(705) 424-0203 info@division15.ca


Who We Are

Division 15 Plumbing & Mechanical Inc. is a full service Plumbing and Mechanical Contracting company serving Barrie and Simcoe County. We provide complete solutions for all institutional plumbing, and industrial plumbing applications. In 2016, we were proud to announce that we merged with a prominent local HVAC and Sheet Metal company, bringing full sheet metal fabrication, design and installation in house.

We are considered among the most notable Plumbing and Mechanical Contractors in Simcoe County, including Barrie, Innisfil, Midland, Orillia, New Tecumseth, Allison, Beeton, Tottenham, Angus, Collingwood, Stayner and Creemore.

As a Plumbing Contractor & Sheet Metal Contractor in Barrie and Simcoe County, we provide only the best quality products available and sound workmanship. We pride ourselves on being responsive to our customers’ needs, while remaining a competitive contractor in the construction industry.

Our President, Ian Van Leeuwen, earned his Master Plumber license in 1989 and has helped construct many of the buildings that you see today in the Barrie and Simcoe County area. In 2006 he partnered with his sister, Katherine, and formed Division 15 Plumbing & Mechanical Inc. Ian and the team have vast experience in commercial, institutional and industrial plumbing & HVAC; excelling in renovations, new builds and custom design build projects.

Our team is made up of licensed commercial Plumbers, Licensed Sheet Metal Workers, Licensed Gasfitters, Registered Apprentices and certified Cross Connection & Backflow Prevention specialists. Knowledgeable and skilled at the most advanced techniques and technologies in HVAC design & installations, chillers, hydronic heating, infloor heating, gas piping, backflow prevention and plumbing design & installations. If you have a project in mind, our team will design and install custom solutions for your plumbing and mechanical systems.


We are proud members and supporters of the following Construction and Business Associations: 

Represents over 400 non-residential construction and related business members.


Representing the industrial, commercial, institutional and heavy civil construction companies of Ontario.


The Canadian Federation of Independent Business (CFIB) is the big voice for small businesses.​


The Mechanical Contractors Association of Canada is a vibrant and diverse national trade association serving the needs of mechanical contractors of all sizes.


We understand that constructing a building or performing a renovation takes a whole team approach. We aim to build partnerships with contractors and subcontractors to ensure the end clients’ project is completed on time, on budget and done right – the first time, while remaining competitive and profitable.

We build solid relationships with local Engineers who work with us on design-build applications to ensure the most appropriate solution is designed.

We are dedicated to the ongoing betterment and advancement of the construction industry in Barrie and Simcoe County. Our Vice President, Katherine, sat on the Board of Directors at the Barrie Construction Association from 2005 through 2015, finishing her term as President. She has dedicated 1000’s of hours supporting local initiatives and building a stronger association for the construction community in Simcoe County.

Team Approach


We are proud to say that many of our Contractor and Commercial, & Institutional clients have been using our services for many years.
Here’s what a few of them have had to say about us:

“ We look for reputable firms with quality management, skilled employees and project experience when we accept trades to our pre-qualified roster. Division 15 Plumbing Inc. brings all this to the Simcoe County District School Board. I have personally had the pleasure of working with them on many projects and have found their work to be of the highest quality.”


Simcoe County District School Board

“Division 15 Plumbing Inc. completed the plumbing in our building that houses the Alliston OPP in New Tecumseth, ON… We would not hesitate to use them again for the development of any of our buildings.”


Goldspade Investments

“In October 2011, we moved into our beautiful 8700 sqft new veterinary hospital. Division 15 Plumbing completed all of our plumbing work. As we are a veterinary facility, you can imagine the extensive plumbing requirements. During the building process and completion we found all the workers to be knowledgeable and skilled in all of their undertakings. … we would have no hesitation in recommending Division 15 Plumbing.”


Owner of Allandale Veterinary Hosptial
Barrie, ON

“We have utilized Division 15 Plumbing on numerous institutional & commercial projects over the last five years, and have never experienced anything but prompt, professional, courteous service. They have rapidly become one of our ‘go to’ mechanical sub-contractors. When we occasionally enter the ‘design build’ market in the Barrie and Orillia area, they are usually our first choice for a mechanical contractor.”


Vice-President of Quinan Construction Ltd., General Contractors
Orillia, ON

Need a quote or help with your next plumbing or mechanical project?

Call or email today to speak with one of our estimators who will happily answer any questions you may have.