| Business | Phone |
| Groundworks Construction Co 51 Kersey Cres, Richmond Hill L4C 5H4 | (905) 709-4657 |
| Pilot Contracting 40 Vogell Rd, Richmond Hill L4B 3N6 | (905) 770-5851 |
| Principle Sewer & Watermain Co 100 Winchester Lane, Richmond Hill L4C 6Y7 | (905) 889-8444 |