About Us

In July 2013 Design/Build Mechanical Limited opened its doors. We provide competitive plan & spec and design build estimates to service the commercial & industrial industry in the Southwestern Ontario area.

We work closely with Roberts Bros Sheet Metal – HVAC contractors to provide a complete mechanical estimate and project. Whether it be a small commercial plaza or large industrial project we are ready to provide our customers with a professional job from start to finish.

Joe Cunningham

Joe Cunningham


I started my plumbing apprenticeship in the commercial/industrial/institutional plumbing & heating trade in 1988. Having obtained my plumbing license in Sept. 1993 my goal was to work as one of many on projects. I never had aspirations of being a job foreman let alone a project manager & estimator but my employer had different plans. After a few years of working in the field as a job foreman I had the opportunity to work in the office as an estimator / project manager. The most important thing I learned working as a job foreman and later as a project manager is that a company’s most valuable resource is its employees.

When I opened Design/Build Mechanical Limited in 2013, my number one goal was to surround myself with self-motivated, professional plumbers and apprentices. This simple, yet powerful frame of mind has made my job easier as an owner. The going was rocky the first 3 years but as a result of Design/Build Mechanical’s employees work ethic and attention to detail has helped move the company forward into its seventh year of operation.


Your quick understanding of my client’s initial scope of work, coupled with competitive pricing and broad design knowledge contributed to Riverside 360 Inc. successfully securing this expansion project. Your onsite tradespeople are very ‘team’ minded professionals and have completed the work to the highest level of quality, which can be attributed to the close working relationship and attention to detail between our staff and the Consulting Engineers. We recommend Design/Build Mechanical for all plumbing work  related to industrial, commercial and institutional type clients.

John Porter, DirectorRiverside 360 Inc.

Bronnenco Construction Ltd. has had the pleasure of working with Design/Build Mechanical on a couple of projects in the past. Most recently the new construction of the Violence Against Women’s Shelter in St. Thomas and the renovation of Fanshawe College Practical Electrical & Mechanical program. Their response to RFIs, change orders, deficiencies etc. were completed in a timely manner and we have found them to be fair and competitive in their pricing and professional to work with. I would not hesitate to recommend Design/Build Mechanical and would be pleased to work with them on future projects.

Justin Nguyen, Project Manager/EstimatorBronnenco Construction Ltd.

We are pleased to advise that we have been doing business directly with Design/Build Mechanical Ltd. for the last year. During this time we have worked together on a substantially sized project at the Oxford Dental Clinic, along with several smaller ones (all with excellent results!). We have also worked with Mr. Cunningham through the mechanical trade businesses over the last 18 years on various projects and we have developed an exceptional working relationship with him. During that period, we have completed many projects using Joe’s expertise in the industrial, commercial and institutional sectors ranging from less than $100,000 to in excess of $2,000,000. Joe is a licensed gas fitter and is very knowledgeable and professional in all aspects of the trade. We highly recommend Design/Build Mechanical to prospective clients for any plumbing requirements.

Jim Roberts G.S.C.Roberts Bros.
Roberts Bros. Ltd.
Riverside 360 Inc.
Bronnenco Construction Ltd.