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At Lonergan Engineering, integrity drives everything we do. Now in our second decade of operations, we’ve established a highly esteemed practice, including industry leadership in integrated systems testing.


We’re more than engineers—we’re problem solvers, educators, and industry advocates. We believe in sharing knowledge, building strong partnerships, and delivering real-world solutions that ensure our clients’ success. Because, frankly, we give a damn.

We bridge the gap between engineering and execution. Our team blends licensed engineers, trade professionals, and experienced managers, bringing both technical expertise and hands-on know-how. This balance allows us to design solutions that are not only innovative but also practical, cost-effective, and built to work in the real world.

We are deeply committed to the discipline that defines our profession. As consulting engineers, we comply with a stringent set of regulatory requirements defined by professional engineering licensing bodies. We maintain relevant licensing, continuous learning practices and are actively engaged in developing the next generation of engineers.

Simcoe county

We provide engineering and design services that power our local hospitals, schools, office spaces and industrial facilities. Whether it’s a new build, renovation or retrofit, we provide expert engineering services, feasibility assessments, and due diligence reporting to ensure safe, efficient, and future-ready solutions.

Integrated system

As an independent Integrated Testing Coordinator (ITC), we are the trusted partners to verify that fire protection and life safety systems work together as designed under normal and emergency conditions. As a ULC Listed firm, we develop test plans, oversee implementation, and document results – ensuring compliance with relevant standards and giving building owners confidence in their operations.

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Consulting Engineer

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Senior Electrical Engineer

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Associate

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Contract Administrator / Integrated Testing Coordinator

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Administrator

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Integrated TestingCoordinator

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Junior Electrical Designer

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Operations

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Jr. IST Coordinator