| Business | Phone |
| Abidien 236 Helen Ave, Markham L3R 1K1 | (905) 479-9600 |
| Ashdale Homes 3075 14th Ave, Markham L3R 0G9 | (905) 475-9211 |
| Chiavatti Developments Ltd 7725 Birchmount Rd, Markham L3R 9X3 | (905) 940-0528 |
| Avenue Homes Ltd 239 Carlton Rd, Markham L3R 3M3 | (905) 305-1165 |
| Hanson Consilium Construction 7850 Woodbine Ave #300, Markham L3R 0B9 | (905) 305-9692 |
| Jim A Bajari Constructions 6795 14th Ave, Markham L6B 1A8 | (905) 294-1122 |
| Landmortgage Corp 9230 Warden Ave, Markham L3R 0K2 | (905) 474-0002 |
| Lloyd Baker & Sons Ltd 7170 Highway 7, Markham L6B 1A8 | (905) 294-0542 |
| Mauro Homes 70 Gibson Dr, Markham L3R 4C2 | (905) 475-7893 |
| Metrosquare Properties Ltd 3636 Steeles Ave E, Markham L3R 1K9 | (905) 940-3636 |
| Monarch Construction Ltd 6 Bushberry Crt, Markham L3P 7S9 | (905) 474-1331 |
| Murray Brown Construction 4522 Major Mackenzie Dr E, Markham L6C 1K6 | (905) 887-5576 |
| Oak Meadows 17 Cornell Meadows Ave, Markham L6B 1B6 | (905) 472-4216 |
| Oak Meadows Cornell Country Glen Rd, Markham | (905) 294-1413 |
| Powermar Development Ltd 7768 Mccowan Rd, Markham L3P 3J3 | (905) 513-6511 |
| Promark Telecon 501 Alden Rd, Markham L3R 3L4 | (905) 943-4400 |
| Remington Homes 189 Coppard Ave, Markham L3S 4A6 | (905) 472-0429 |
| Best Homes 167 Helen Ave, Markham L3R 1J7 | (905) 948-9966 |
| Silver Fox Building Group 300 Steelcase Rd W #3, Markham L3R 2W2 | (905) 470-1764 |
| Spanton General Contracting 254 Denison St, Markham L3R 1B6 | (905) 944-9397 |
| Summit Pointe 7768 Mccowan Rd, Markham L3P 3J3 | (905) 513-6522 |
| Urban Renaissance Cornell Inc 2 Settlement Park Ave, Markham L6B 1B5 | (905) 471-0585 |
| Vanbots 50 Acadia Ave #200, Markham L3R 0B3 | (905) 477-7718 |
| Cellino Construction 180 Bullock Dr, Markham L3P 7N2 | (905) 294-2392 |
| Early Addition Construction 34 Miley Dr, Markham L3R 4V3 | (905) 479-7243 |
| Fairchild Construction Ltd 66 Bates Way, Markham L6C 1R7 | (416) 623-6832 |