| Business | Phone |
| Ahneman Associates 200 Railroad Ave # Ll, Greenwich 6830 | (203) 869-7707 |
| Tkn Consulting 33 Talbot Ln # 8, Greenwich 6830 | (203) 531-8444 |
| Sound View Engineers & Land 70 Arch St, Greenwich 6830 | (203) 422-2220 |
| S & S Engineering 25 Lewis St # 305, Greenwich 6830 | (203) 629-5811 |
| Cooperman Weiss Consulting 434 Riversville Rd, Greenwich 6831 | (203) 869-5612 |
| Peter Gubinski Consulting 27 Church St, Greenwich 6830 | (203) 531-6397 |
| Olaf Soot Assoc 9 Tomahawk Ln, Greenwich 6830 | (203) 661-4522 |
| Joyella Media Partners 35 Mason St # 3, Greenwich 6830 | (203) 622-7171 |