| Business | Phone |
| Engineering Plant Svc 2172 Yucca Ln, Altadena 91001 | (626) 798-4102 |
| Allstate Electric Contractors 1748 Harding Ave, Altadena 91001 | (626) 797-0415 |
| Global Electrical 3624 Glenrose Ave, Altadena 91001 | (626) 791-2907 |
| Guerrero Electric 3101 Marengo Ave, Altadena 91001 | (626) 791-4226 |
| Lrc Electric 3379 Ellington Villa Dr, Altadena 91001 | (626) 798-2295 |
| Soule & Assoc 3314 Canyon Crest Rd, Altadena 91001 | (626) 797-0436 |
| Wood Electric Co 444 W Palm St, Altadena 91001 | (626) 797-5704 |