Building Code College Instructor Profile

Glenn Mathewson, MCP

Glenn Mathewson

Glenn Mathewson

To learn more about Glenn Mathewson’s work in the construction industry, please visit his website


Glenn began his construction career in the trenches, starting as a laborer and carpenter’s apprentice, to framing homes as a subcontractor and later operating his own remodeling and deck-construction company. Glenn then spent five years working for the City of Westminster, CO as a building, plumbing and mechanical inspector, and earned a Master Code Professional certification from the International Code Council. He continues to work for the City as a part-time plans analyst and allots the remainder of his professional time to freelance work.

Drawing on his experience as a tradesman, contractor, consultant and building inspector, he is able to review, discuss and teach the standards of construction with a true understanding of the realities involved with applying them in the field.

Glenn has authored dozens of technical articles in the “Professional Deck Builder” and the “Journal of Light Construction”, as well as the International Code Council’s book, Deck Construction Based on the 2009 International Residential Code. From 2001 to the end of 2013, he took the role as Technical Advisor to the North American Deck and Railing Association (NADRA), where he assisted the association with code related initiatives and the development of the Master Deck Professional, Codes and Standards Certification. Glenn also works as a construction and code educator, with audiences ranging from contractors to building officials at both public and private events.

In 2012 he began exploring the use of technology to make codes more accessible and understandable. At the end of the year he opened, an emerging, ICC-approved, online school, to provide his and other instructors’ education anywhere in the world. Taking education even further, Glenn is developing a suite of mobile applications to support code compliant installations.’s first app, The Combustion Air Calculator, is available at Google Play.

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