| Installation Aguilar inc. | 5857-5770-01 | Montréal | Active |
| Installation Centralvac Inc. | 8310-9660-26 | Montréal | Active |
| Installation Cuisines Beryo inc. | 5769-6551-01 | Montréal | Active |
| Installation de cuisine AAA inc. | 5832-5135-01 | Montréal | Active |
| Installation Lonario Québec inc. | 5763-9304-01 | Montréal | Active |
| Installation Portes et Fenêtres Olivier Inc. | 5684-3097-01 | Montréal | Active |
| Installation Quincaillerie Électrifiée Inc. | 5822-8263-01 | Montréal | Active |
| Installation Sol-Tra Inc. | 2549-3636-29 | Montréal | Active |
| Installations Ardeco inc. | 8231-8015-28 | Montréal | Active |
| Installations Doorcorp (2008) Inc. | 8358-2304-01 | Montréal | Active |
| Installations électriques J.D. inc. | 5614-8919-01 | Montréal | Active |
| Installe Rénove GM inc. | 5647-1410-01 | Montréal | Active |
| Instaluminium inc. | 5717-4112-01 | Montréal | Active |
| Instamétal inc. | 5817-8187-01 | Montréal | Active |
| Institut de recherches cliniques de Montréal | 1350-4758-00 | Montréal | Active |
| Intégrité Construction inc. | 5854-0972-01 | Montréal | Active |
| Intelgest inc. | 8318-8227-02 | Montréal | Active |
| Intense Construction inc. | 8352-4546-11 | Montréal | Active |
| Inter-Provinciale électrique ltée | 1675-3212-24 | Montréal | Active |
| Intex Deco inc. | 2866-4712-76 | Montréal | Active |
| Into (1972) inc. | 8003-3905-99 | Montréal | Active |
| Investissement Angrignon inc. | 5760-4985-01 | Montréal | Active |
| Investissement Chambord inc. | 5681-4288-01 | Montréal | Active |
| Investissements Candiac (II) S.E.C. | 5836-0389-01 | Montréal | Active |
| Investissements Clarbridge Drolet inc. | 5776-7238-01 | Montréal | Active |
| Investissements Claric MCH inc. | 5808-2439-01 | Montréal | Active |
| Investissements Claricblu2 inc. | 5746-1220-01 | Montréal | Active |
| Investissements Claricpur Brossard inc. | 5745-0504-01 | Montréal | Active |
| Investissements Claricpur Longueuil inc. | 5763-0295-01 | Montréal | Active |
| Investissements Claricpur St-Lambert Inc. | 5858-2032-01 | Montréal | Active |
| Investissements Divco Capital Limitée | 8117-5440-28 | Montréal | Active |
| Investissements Parniani inc. | 5740-4592-01 | Montréal | Active |
| Investissements St-Elzéar inc. | 5787-7524-01 | Montréal | Active |
| Ioan plomberie inc. | 5838-8273-01 | Montréal | Active |
| Ionta Nadeau Lagacé Finition de béton inc. | 5795-6385-01 | Montréal | Active |
| IP4B inc. | 8331-1027-30 | Montréal | Active |
| Ipex inc. | 5556-2631-01 | Montréal | Active |
| IPM Rénovation inc. | 5767-6892-01 | Montréal | Active |
| IRC Électro-Pro inc. | 5842-6263-01 | Montréal | Active |
| Irrigation et Construction AMB inc. | 5879-1674-01 | Montréal | Active |
| Irriglobe inc. | 5701-3914-01 | Montréal | Active |
| Isael Moises inc. | 5728-8144-01 | Montréal | Active |
| Isolation Exper+ inc. | 5732-2059-01 | Montréal | Active |
| Isolation Francis Lachapelle inc. | 5642-5432-01 | Montréal | Active |
| Isolation ISOBEC Inc. | 5663-6160-01 | Montréal | Active |
| Isolation Isolpro inc. | 5882-8419-01 | Montréal | Active |
| Ital Forge Ornemental ltée | 1125-0487-86 | Montréal | Active |
| Italbec International Inc. | 8232-5788-11 | Montréal | Active |
| J & M Réno-Construction inc. | 5756-4510-01 | Montréal | Active |
| J Kor Construction inc. | 5870-8454-01 | Montréal | Active |