Who We Are

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

Mark is a graduate of Drexel University with a BS in Commerce and Engineering. He has been selling in the construction industry for 25 years with an emphasis on specification-driven products. Mark is active in many industry trade organizations including AIA/BEC, CSI, ACI and ICRI and has held a number of officer and board member positions in CSI. 

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

CSI: Building Knowledge, Improving Project Delivery
International Concrete Repair Institute
American Concrete Institute: Always advancing
AIA Philadelphia