- Carnegie Mellon University
- Kiski Area High School
- St. Joseph's University
- University of Pennsylvania
- University of Pittsburgh
- West Virginia University
- Burt Hill Kosar Rittlemann Associates
- The Design Alliance
- Eckert, Seamans, Cherin & Mellott
- L.D. Astorino & Associates Ltd.
- Reed, Smith, Shaw & McClay
- Pepper, Hamilton & Scheetz
- The Buncher Group
- Forest City Commercial Construction, Inc.
- J.J. Gumberg Co.
- Oliver Realty/Grubb & Ellis
- Spectacor Management Inc.
- Brickstone Developers
- Allegheny County
- Canadian Consulate
- Commonwealth of Pennsylvania
- Internal Revenue Service
- City of Pittsburgh
- Whitehall Borough
- Century III Mall
- Hilton Hotels
- Kaufmann's
- South Hills Village
- Wannamakers
- The Westin Convention Center
- ALCOA
- Dravo Corporation
- Fisher Scientific Corporation
- IBM Corporation
- PPG Industries, Inc.
- Volkswagen of America
- Blue Cross of Western Pennsylvania
- Bryn Mawr Hospital
- Pennsylvania Mercy Hospital
- South Hills Health System
- Western Psychiatric Institute
- Wexford Nursing Home
- Alcosan
- AT & T Company
- Consolidated Natural Gas Company
- Ebensburg Cogeneration Facility
- Jacksonville Electric Authority
- New Castle Water Authority