| Business | Phone |
| Abroyd Communications Ltd 50 Goebel Ave, Cambridge N3C 1Z1 | (519) 220-0420 |
| Advanced Design Inc 1575 Bishop St N, Cambridge N1R 7J4 | (519) 623-1055 |
| Angstrom Engineering 140 Mcgovern Dr #12, Cambridge N3H 4R7 | (519) 653-8883 |
| Irish Creek Consultants 6566 Ellis Rd, Cambridge N3C 2V4 | (519) 658-9999 |
| Meritech Services Inc 1315 Bishop St North, Cambridge N1R 6Z2 | (519) 623-1140 |
| Spl Control Inc 1400 Bishop St N #200, Cambridge N1R 6W8 | (519) 623-6100 |
| Stantec Consulting Ltd 152 Main St, Cambridge N1R 6R1 | (519) 622-3005 |
| Cambridge Engineering & Plnng 15 Cambridge St, Cambridge N1R 3R8 | (519) 740-1529 |
| Efficiency Engineering Inc 155 Robinson Rd, Cambridge | (519) 624-9965 |