| Business | Phone |
| Hunt Surveys Inc 45a West Wilmot St #207, Richmond Hill L4B 1K1 | (905) 764-8759 |
| Otto Ertl Ontario Land Srvyr 1234 Reid St #10, Richmond Hill L4B 1C1 | (905) 731-7834 |
| P Salna Co Ltd 10225 Yonge St, Richmond Hill L4C 3B2 | (905) 884-3988 |
| Rowan-Stanciu Ltd 24 Lorne Ave, Richmond Hill L4C 1C1 | (905) 764-9909 |