| Business | Phone |
| Woodings Construction 12339 Carroll Ave, Rockville 20852 | (410) 685-7199 |
| Tkr Construction Corp 15905 Maple Ridge Ct, Rockville 20853 | (301) 924-5248 |
| Utility Construction 5600 Fishers Ln, Rockville 20852 | (301) 770-6277 |
| Construction Dynamics Group 6110 Executive Blvd, Rockville 20852 | (301) 984-9688 |
| Perry Construction Group Inc 15200 Shady Grove Rd # 350, Rockville 20850 | (301) 670-2835 |