| Business | Phone |
| Lonergan Alarms Ltd 70 Villarboit Cres, Concord L4K 4C7 | (905) 738-6180 |
| Richmond Fire Systems Ltd 499 Edgeley Blvd #10, Concord L4K 4H3 | (905) 660-4077 |
| Bramwood Electrical Ltd 45 Casmir Crt, Concord L4K 4H5 | (905) 738-9719 |
| Energy Corp 11 Buttermill Ave, Concord L4K 3X1 | (905) 761-5626 |