| Business | Phone |
| Artech Design Consultants Inc 85 West Wilmot St #9, Richmond Hill L4B 1K7 | (905) 882-6516 |
| Tpe Group 40 Vogell Rd #54, Richmond Hill L4B 3N6 | (905) 883-6400 |
| Dero Building Consultants Inc 20 Wertheim Crt #13, Richmond Hill L4B 3A8 | (905) 889-8434 |
| Vincad Drafting 45 West Wilmot St #B, Richmond Hill L4B 1K1 | (905) 762-1116 |