| Title | Country | State / Province | City | Phone | Email Sort descending |
|---|---|---|---|---|---|
| exp Services Inc. | United States | Wisconsin | Milwaukee | 414 221-0088 | |
| STS Group Inc. | United States | California | Sherman Oaks | 818 430-5854 | |
| Dextra Frankel Design Associates | United States | California | Santa Monica | 310 581-6532 | |
| Brinjac Engineering | United States | Pennsylvania | Philadelphia | 215 592-9611 | |
| Integrated Lighting Design | United States | California | Tarzana | 818 578-6606 | |
| Light This! | United States | Massachusetts | Boston | 617 227-6920 | |
| McMillan Group, Inc. | United States | Connecticut | Westport | 203 227-8696 | |
| HOK Chicago | United States | Illinois | Chicago | 312 782-1000 | |
| Palindrome Lighting Design | United States | Maryland | Crofton | 410 451-3200 | |
| Lighting Design Alliance | United States | California | Long Beach | 562 989-3843 | |
| Bos Lighting Design | United States | Texas | Houston | 713 869-9559 | |
| OGCB, Inc. | United States | Tennessee | Memphis | 901 452-6283 | |
| Cooley Monato Studio, Inc. | United States | New York | New York | 212 674-4488 | |
| Design Elements Inc | United States | Wisconsin | Milwaukie | 414 221-9299 | |
| C.M. Kling and Associates, Inc | United States | Virginia | Alexandria | 703 684-6270 | |
| Hartranft Lighting Design (DC Office) | United States | District of Columbia | Washington | 240 731-1058 | |
| exp Services Inc. | United States | Florida | Maitland | 407 660-0088 | |
| Gotham Light & Power | United States | New York | East Hampton | 631 907-9362 | |
| Robert Newell Lighting Design | United States | New Jersey | Westfield | 908 654-9304 | |
| Euchromia Lighting Design | United States | Ohio | Kettering | 937 298-6684 | |
| Collaborative Lighting LLC | United States | Massachusetts | Sudbury | 978 369-6788 | |
| Hugh Lighting Design | United States | Illinois | Oak Park | 708 445-0995 | |
| APM Engineering | United States | District of Columbia | Washington | 202 783-0850 | |
| Impact Lighting & Production | United States | California | Richmond | 800 457-7501 | |
| BNA Consulting | United States | Utah | Salt Lake City | 801 532-2196 | |
| Linda Cummings Lighting Consult. | United States | Texas | Houston | 713-524-1200 | |
| Quentin Thomas Associates | United States | New York | Douglaston | 718 423-3044 | |
| Design Forum | United States | Ohio | Dayton | 937 439-4400 | |
| Emphasis Lighting Group | United States | Minnesota | Minnetonka | 612 933-9904 | |
| ONeil Langan Architects, PC | United States | New York | New York | 212 941-9270 |