| Business | Phone |
| Bottoms Up Garden & Mntnc 1837 Grand Oaks Ave, Altadena 91001 | (626) 797-9200 |
| Environmental Design Systems 2123 Minoru Dr, Altadena 91001 | (818) 952-5238 |
| S E Farnum Assoc 1940 Midwick Dr, Altadena 91001 | (626) 791-1762 |
| Thomas Batcheller Cox Assoc 646 W Mendocino St, Altadena 91001 | (626) 798-2365 |