Management Team

Mike Booth

519-842-4392 Ext. 236

Mike joined the Grassmere team in 1989 and became a partner in the company in 1995. In 2006, he became sole owner of Grassmere Construction Ltd.

With a background in architecture and over 35 years of experience in the construction industry, Mike has strong leadership and management abilities and a meticulous approach to workmanship. He also serves as vice president of Grassmere’s sister company, KDM Erectors.

Patti Marsh

519-842-4392 Ext. 223

Patti joined us in 2003, and her keen analytical mind is a great asset to our team.

As an energetic, motivated individual who never loses sight of the big picture, Patti oversees the finance team and manages the day-to-day activities for both Grassmere and our sister company, KDM Erectors.

Herman Sinke

Pre-Construction Manager
519-842-4392 Ext . 234

Herman has been with Grassmere since 2012, bringing over 40 years of experience in the marketing, sales, estimating and project management aspects of the construction industry.

As Pre-Construction Manager, Herman’s specific expertise is in the design-build process—from concept to completion. With a background in Architectural Technology, he has managed a variety of industrial, commercial and institutional (ICI) sector projects.