| Business | Phone |
| Meridian Architects Engineers 26412 Broadkill Rd, Milton 19968 | (302) 684-4766 |
| Design Consultants Group 18072 Davidson Dr, Milton 19968 | (302) 684-8030 |
| Ten Bears Environmental 703 Chestnut St, Milton 19968 | (302) 684-5080 |
| Green Stone Engineering Llc 703 Chestnut St, Milton 19968 | (302) 684-1187 |