Incorporated in 1939, One Source Associates, Inc. represents the industry’s finest products in lighting, lighting controls, electrical supplies, window treatments and even site amenities. Our typical selling territory includes Maryland, Washington DC, and Northern Virginia.

In April of 2016 One Source Associates expanded its territory to include Western Pennsylvania and West Virginia through the merger of Paolicelli & Associates and One Source to become Paolicelli-One Source Associates.

One Source’s corporate offices are in Columbia Maryland and Paolicelli One Source offices are in Carnegie Pennsylvania.

Our mission is to lead the industry with passionate regard for service, ethics & customer satisfaction. Our Values are
Take Care of the Customer Take Care of Each Other
Deliver Innovation Be Professional

One Source Associates has 54 team members serving our customers out of our Maryland offices and 15 team members serving customers out of our Carnegie offices.

Principals: One Source Associates & Paolicelli One Source Associates
Jack Floyd – CEO; John McLoughlin – President
Bill Tucker – Sr. VP Construction Christopher Barozzini – VP Lighting Controls
Mark Koehler – Contractor Sales Mike Morris – Director of Specification Sales

Paolicelli One Source Associates
Dave Paolicelli – President

We strive to deliver excellence to all the market segments we serve, and to that end we engage in regular, formal self-assessment and training of personnel.