We build relationships
Put our product knowledge, factory resources and experience to work for you.
Founded in 1990, Construction Sales Group, Inc. is a Manufacturers’ Representative Sales Agency specializing in the sale of engineered materials and architecturally specified products to the construction industry in Pennsylvania, New Jersey and Delaware.
Our core principles
Strong technical support
Highest quality service
Ongoing customer communication
Meet your team

Mark Kennedy CSI, CDT

Jim Harduk CSI, CCPR
Jim is a graduate of The Richard Stockton College of NJ with a BA in Sales & Marketing. He has been selling in the construction industry for over 20 years and previously worked as a Superintendent and Project Manager for a construction firm. Jim is an active member of CSI and previously served as Treasurer for the Philadelphia Chapter.

Debbie Sterling
Debbie has over 20 years of experience in customer service, office administration, sales and marketing with Construction Sales Group. Debbie has tremendous technical aptitude to handle the intricacies of the products we represent and the complex duties of Office Manager in the fast-paced environment of commercial construction.
Our Memberships



