| Title | Country | State / Province | City | Phone | Email Sort descending |
|---|---|---|---|---|---|
| George Sexton Associates | United States | New York | New York | 212 736-4842 | |
| Yarnell Associates | United States | Missouri | Kansas City | 816 931-2222 | |
| Lighting Design Studio, LLC | United States | California | Hermosa Beach | 310 798-8706 | |
| Robert Singer & Associates, Inc. | United States | New York | New York | 212 369-1300 | |
| 521 Atelier, LLC | United States | Pennsylvania | Bryn Mawr | 484 380-2590 | |
| Leni Schwendinger Light Projects LTD | United States | New York | New York | 212 947-6282 | |
| Brian Orter Lighting Design BOLD | United States | California | Los Angeles | 213 412-3180 | |
| Oxford Lighting Consultants | United States | Mississippi | Oxford | 601 234-4981 | |
| Design One Corporation | United States | New York | New York | 212 477-5662 | |
| Reyes Engineering, Inc. | United States | Oregon | Portland | 503 771-1986 | |
| RTKL Assoc. Inc. | United States | District of Columbia | Washington | 202 833-4400 | |
| Yeager Design, LLC | United States | New York | Brewster | 845 279-2812 | |
| Ellerbe Becket | United States | Minnesota | Minneapolis | 612 376-1841 | |
| CUH2A, Inc. | United States | Illinois | Chicago | 312 258-1212 | |
| Lam Partners Inc | United States | Massachusetts | Cambridge | 617 354-4502 | |
| T. Kondos Associates, Inc. | United States | New York | New York | 212 736-5510 | |
| U Lighting, Inc. | United States | New York | New York | 212 242-6456 | |
| Yeager Design, LLC | United States | Oregon | Lake Oswego | 503 675-1273 | |
| exp Services Inc. | United States | California | San Diego | 858 597-0555 | |
| STV Incorporated | United States | New York | New York | 212 777-4400 | |
| Syska Hennessy Group | United States | California | Los Angeles | 800 858-2478 | |
| The Ruzika Company | United States | California | Irvine | 949 253-3479 | |
| Lindsley Consultants Inc. | United States | New York | New York | 212 564-2800 | |
| Ralph Appelbaum Associates | United States | New York | New York | 212 334-8200 | |
| City Design Group | United States | Florida | Casselberry | 407 339-0695 | |
| Illumination Prod. Svcs. ILL | United States | New York | New York | 212 582.8648 | |
| TSC Design | United States | New York | New York | 212 213-4595 | |
| Palm Beach Lighting Design | United States | Florida | Coral Gables | 305 444-9273 | |
| exp Services Inc. | United States | Wisconsin | Milwaukee | 414 221-0088 | |
| STS Group Inc. | United States | California | Sherman Oaks | 818 430-5854 |