Contactors
- ADT Security Systems
- Aldona Fire Protection
- Ameritech
- AT&T
- AMD Contractors
- Amtex Electric
- Crow Construction
- DGA Alarm
- E-J Electric
- Firecom Inc.
- Firecraft Inc.
- F-Systems Inc.
- Gordon Construction
- Grinnell
- H&D Electric
- Herbert Construction
- Honeywell Inc.
- HRH Contractors
- Kleinberg Electric
- Kleinknecht Electric
- MASS Electric
- McGraw Hudson Construction
- M&D Contractors
- R.B. Samuels Inc.
- F.J. Sciame Construction Corp.
- Secco Electric
- Siemens Europe
- Simplex Grinnell
- SJS Signal & Communication
- StructureTone
- Tishman Construction
- Turner Construction Corp.
- Twins Electric
- York Hunter / Full Spectrum
Commercial Office Buildings
- AIG Realty
- American International Group
- Bank of New York
- Citibank
- CS First Boston
- Compass Management
- Cushman & Wakefield
- Dime Savings Bank
- Durst Organization
- Edward S. Gordon
- Fazen Organization
- Fener Realty
- Helmsley Spear
- JMB Properties
- Jones Lang LaSalle
- Newmark Realty
- Tishman - Speyr
- Union Bank of Switzerland
- Xerox
Department Stores and malls
- Barney's New York
- Bay Plaza Mall
- Bergdorf Goodman
- Brooks Brothers
- Bloomingdale's
- Kings Plaza Mall
- Macy's Herald Square
- Queens Mall
Educational
- Brooklyn Academy of Music
- Columbia University
- Fordham University
- John Jay College
- New School University
- New York University
- Queens College
- York College
Equipment Distributors
- ADT
- Ansul
- Case / ACME
- Casey Systems
- Cerberus Pyrotechnics
- Edwards Systems Technology
- Elf-Atochem
- Firecom Inc.
- Grinnell
- GS Building Systems
- Harbor Industries
- Honeywell
- Johnson Controls
- Notifier
- Multiplex
- Pyrotenax USA
- Radionics
- Simplex
- Wheelock
Health Clubs
- Bally's
- Health & Tenis Corp.
Houses of Worship
- Rutgers Presbyterian Church
- St. Bartholomew's Church
- Temple Shaaray Tefila
Hospitals
- Bronx Hospital
- Cornell University Medical Center
- Hospital for Joint Diseases
- Hospital for Special Surgery
- NYU Medical Center
- Memorial Sloan Kettering Cancer Center
- Mt. Sinai Hospital
- Regents Hospital
- Wyckoff Hospital
Hotels
- Beacon Hotel
- Hemsley Hotel
- Hotel Pennsylvania
- Marriott
- New York Hilton and Towers
- Ramada Hotel
- Sheraton
- Waldorf=Astoria
- Warwick Hotel
Insurance
- HIP of Greater NY
- American International Group
New York City Landmarks, Museums and Institutions
- Cooper-Hewitt Museum
- Lincoln Center
- Madison Square Garden
- Radio City Music Hall
- Rockefeller Center
- The Morgan Library
- United Nations
News, Entertainment and Publishing
- AOL Time Warner
- Daily News
- Scholastic Inc.
- Time Warner
- Warner Bros.
Oil & Gas
- Brooklyn Union Gas
- Gaseteria
- Mobil
- Shell Oil
Parcel
- UPS
- FedEx
Pharmaceutical
- American Home Products
- DuPont Merck
- Pfizer Inc.
Restaurants
- Planet Hollywood
Social Organizations and Foundations
- Bowery Mission
- United Cerebral Palsy Foundation
- UJA Federation
Telecom
- New York Telephone
- NYNEX
U.S. Federal Projects
- Thurgood Marshal U.S. Courthouse Building (New York City, NY)
- Alexander Hamilton U.S. Custom and Smithsonian Museum of Native American Building (New York City, NY)
- Ted Weiss Federal Building (New York City, NY)
- Alfonse m. D'Amato U.S. Federal Courthouse Building (Central Islip, NY)
- Redzikowo Naval Support Facility (Radzikowo, Poland)
- 3 Gateway Center (Newark, NJ)
- 250 Broadway (New York City, NY)
- 820 Concourse Village West (Bronx, NY)
- Joseph Addabbo Federal Building (Queens, NY)
- 250 Munoz Rivera Ave (San Juan, Puerto Rico)
- 270 Munoz Rivera Ave (San Juan, Puerto Rico)