| Gazel Électrique inc. | 5732-0871-01 | Laval | Active |
| GDC Construction & Rénovation Inc. | 5762-4603-01 | Laval | Active |
| GDE Électrique Inc. | 5862-4230-01 | Laval | Active |
| GENCO construction rénovation inc. | 5868-0828-01 | Laval | Active |
| Général Frex inc. | 5804-9610-01 | Laval | Active |
| Génicivex inc. | 5870-3331-01 | Laval | Active |
| Geomed inc. | 8319-0330-08 | Laval | Active |
| Gesaco Construction Inc. | 5814-7752-01 | Laval | Active |
| Gesteck EL inc. | 5716-7637-01 | Laval | Active |
| Gestion & Construction Enalto Inc. | 8352-4181-57 | Laval | Active |
| Gestion ADC (1996) inc. | 8344-6930-01 | Laval | Active |
| Gestion Baalbeck inc. | 5826-6776-01 | Laval | Active |
| Gestion Bjbo inc. | 5756-4106-01 | Laval | Active |
| Gestion Concept Sur Mesure inc. | 5858-9615-01 | Laval | Active |
| Gestion Construction BL inc. | 5843-3772-01 | Laval | Active |
| Gestion Construction MC et fils inc. | 5811-6732-01 | Laval | Active |
| Gestion de Construction Langis Fortin inc. | 5740-5540-01 | Laval | Active |
| Gestion de Construction Prizm inc. | 5700-8831-01 | Laval | Active |
| Gestion du Maître inc. | 8302-5908-50 | Laval | Active |
| Gestion Enerled inc. | 5795-7896-01 | Laval | Active |
| Gestion F. Mentone Inc. | 5723-7422-01 | Laval | Active |
| Gestion François Coutu inc. | 5829-3481-01 | Laval | Active |
| Gestion GAE inc. | 5804-6780-01 | Laval | Active |
| Gestion Gravek inc. | 5866-5084-01 | Laval | Active |
| Gestion GRTG inc. | 5855-5137-01 | Laval | Active |
| Gestion Immobilière ASM inc. | 5812-1146-01 | Laval | Active |
| Gestion immobilière SMP inc. | 5645-5652-01 | Laval | Active |
| Gestion Immobry inc. | 5840-7461-01 | Laval | Active |
| Gestion Immonarca inc. | 5803-4075-01 | Laval | Active |
| Gestion JB Construction inc. | 5810-4415-01 | Laval | Active |
| Gestion Julstef inc. | 8345-4728-01 | Laval | Active |
| Gestion Max-Olivier Galarneau inc. | 5851-5446-01 | Laval | Active |
| Gestion Picone Inc. | 5828-1007-01 | Laval | Active |
| Gestion PMD inc. | 5877-1452-01 | Laval | Active |
| Gestion Régis Lagacé inc. | 5794-3151-01 | Laval | Active |
| Gestion Richer Duff inc. | 5746-6757-01 | Laval | Active |
| Gestion RMCGL inc. | 5628-5497-01 | Laval | Active |
| Gestion Robert Daigle (2004) Inc. | 8313-0120-34 | Laval | Active |
| Gestion S. Cajelais inc. | 5835-7856-01 | Laval | Active |
| Gestion S. Forget inc. | 5663-2367-01 | Laval | Active |
| Gestion Signature St-Laurent inc. | 5782-9392-01 | Laval | Active |
| Gestion Vallango inc. | 5727-1967-01 | Laval | Active |
| Ghuman Renovations inc. | 5826-6412-01 | Laval | Active |
| Gian Reno inc. | 5829-0578-01 | Laval | Active |
| Gilbas Construction inc. | 5734-0325-01 | Laval | Active |
| Gilles et fils électrique inc. | 2135-1879-82 | Laval | Active |
| Giulione Construction inc. | 5838-0007-01 | Laval | Active |
| GKP Rénovation Inc. | 5838-9982-01 | Laval | Active |
| GLD Location inc. | 5816-1357-01 | Laval | Active |
| Global Arpentage inc. | 5793-9456-01 | Laval | Active |