| Business | Phone |
| Acorn Development Corp 2 Painted Rock Ave, Richmond Hill L4S 1R6 | (905) 770-7000 |
| Aspen Development 35 West Pearce St #33, Richmond Hill L4B 3A9 | (905) 886-7822 |
| Lorenzetti Development Corp 55 West Beaver Creek Rd #27, Richmond Hill L4B 1K5 | (905) 764-0222 |
| Willowdale Developers 70 East Beaver Creek Rd #33, Richmond Hill L4B 3B2 | (905) 731-4567 |
| Yalinam Developments Ltd 175 West Beaver Creek Rd #23, Richmond Hill L4B 3M1 | (416) 432-5705 |