| Business | Phone |
| A-1 National Alarme & Serrure 2515 Rue Notre-Dame, Lachine H8S 2G8 | (514) 637-5541 |
| A-1 National Lock & Alarm 2515 Rue Notre-Dame, Lachine H8S 2G8 | (514) 620-2262 |
| A-1 Securite Daniel 2515 Rue Notre-Dame, Lachine H8S 2G8 | (514) 277-1152 |
| Serrurier Lacroix Ltee 650 Rue Notre-Dame, Lachine H8S 2B3 | (514) 695-7716 |