| Business | Phone |
| Excel Engineering 440 State Pl, Escondido 92029 | (760) 745-8118 |
| H L Engineering & Surveying 381 Engel St, Escondido 92029 | (760) 741-0533 |
| Hamada Engineering 925 Cimarron Ter, Escondido 92029 | (760) 489-5834 |
| Logan Engineering 530 Deadwood Dr, Escondido 92029 | (760) 744-8474 |
| Wunderlin Engineering Inc 939 S Andreasen Dr, Escondido 92029 | (760) 743-2238 |
| Szytel Engineering & Surveying 304 State Pl, Escondido 92029 | (760) 741-6979 |
| Civilplan 120 W Grand Ave, Escondido 92025 | (760) 522-7567 |
| Masson & Assoc Inc 200 E Washington Ave # 200, Escondido 92025 | (760) 741-3570 |
| Manitou Engineering Co 350 W 9th Ave # B, Escondido 92025 | (760) 741-9921 |
| Land Engineering 201 E Grand Ave # 2f, Escondido 92025 | (760) 741-2689 |