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Chall.Eng. Corporation (CEC) is a multi-disciplined, Consulting Civil Engineering firm that investigates, evaluates and solves challenges that involve failures and design of building and shoreline structures, but excludes municipal infrastructre and services. The main goal of Chall.Eng. is to provide direct personal and efficient services to clients to reduce unnecessry costs created by many layers of staff and improve project turnaround times.

Service Area

In addition to being based in the Windsor-Essex County area, Chall.Eng. routinely covers Chatham-Wallaceburg (Kent County), Sarnia (Lambton County) and London (Middlesex County).  Our engineers are ready and willing to travel where ever the project occurs, which have included assignments in Timmins, Ontario and Lethbridge, Alberta.  In addition, Rick Patterson is a licensed Professional Engineer in the State of Michigan, USA and has completed assignments in Cleveland, Ohio, and Southeastern (Detroit), Michigan.  



Chall.Eng. Consulting Engineers, was founded in 1994 by Rick Patterson to provide professional and consulting engineering services to specialty areas as related to Civil Engineering projects. With over 4,000 investigative/structrual files and 500 coastal projects now accomplished to our credit, and having worked with many clients and companies within the Greater Essex County and beyond, Chall.Eng. has built a reputation for being an outstanding firm with quality clients.


Our Services

Building Sciences

Building condition studies, reserve fund studies, project management and building repair.


Engineering and damage assessments of building and structures.

Coastal Engineering

Shoreline and marine projects.

Structural Engineering

Small building and engineering design, structural assessments and residential structural projects.

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