| Construction YGince inc. | 5841-6710-01 | Estrie | Active |
| Construction YMC inc. | 5796-3100-01 | Abitibi-Témiscamingue | Active |
| Construction Yor inc. | 5801-8938-01 | Montréal | Active |
| Construction Youri Durand inc. | 5777-9944-01 | Lanaudière | Active |
| Construction Ypo inc. | 5762-1286-01 | Laurentides | Active |
| Construction Yvan Deraps (1999) Inc. | 8233-6785-48 | Côte-Nord | Active |
| Construction Yvan Lapalme inc. | 5642-9673-01 | Estrie | Active |
| Construction Yves Beaudry Inc. | 5644-8251-01 | Lanaudière | Active |
| Construction Yves Grassone inc | 5820-2458-01 | Lanaudière | Active |
| Construction Yves Lachance Inc. | 8291-9234-32 | Laval | Active |
| Construction Yves Lavallée St-Hyacinthe inc. | 5595-4747-01 | Montérégie | Active |
| Construction Yves Paquet inc. | 8318-4481-42 | Lanaudière | Active |
| Construction Yves Robidoux et fils inc. | 5771-4883-01 | Laurentides | Active |
| Construction Yves Rodrigue inc. | 8262-7191-43 | Laurentides | Active |
| Construction Yves-Paul Bérubé inc. | 5800-6412-01 | Lanaudière | Active |
| Construction Yvon Bouchard inc. | 8325-5455-18 | Montérégie | Active |
| Construction Yvon Loiselle Inc. | 2947-2560-51 | Montérégie | Active |
| Construction Yvon Marquis Inc. | 2551-7830-06 | Estrie | Active |
| Construction Z. Max inc. | 5636-6909-01 | Mauricie | Active |
| CONSTRUCTION Z.A.M. INC. | 5613-7680-01 | Bas-Saint-Laurent | Active |
| Construction Zag-Mag inc. | 5798-7497-01 | Montréal | Active |
| Construction Zak inc. | 5790-2900-01 | Montréal | Active |
| Construction Zap Inc. | 5783-2511-01 | Laurentides | Active |
| Construction Zencor Inc. | 5859-4029-01 | Montréal | Active |
| Construction Zendeck inc. | 5859-4151-01 | Montérégie | Active |
| Construction ZFRL inc. | 5822-3017-01 | Mauricie | Active |
| Construction ZMV inc. | 5751-6122-01 | Montréal | Active |
| Construction Zol inc. | 5668-0770-01 | Montréal | Active |
| Construction Zolé inc. | 5736-0992-01 | Lanaudière | Active |
| Construction Zori inc. | 5821-2747-01 | Laurentides | Active |
| Construction ZR Inc. | 5825-0549-01 | Lanaudière | Active |
| Construction-ESV inc. | 5727-2056-01 | Laurentides | Active |
| Construction-Habitation Régent C.P.G. inc. | 8109-0755-42 | Montérégie | Active |
| Construction-Plex inc. | 8101-9242-03 | Laurentides | Active |
| Construction-Réfrigération Dumont inc. | 5807-1366-01 | Montérégie | Active |
| Construction-Rénovation C3 inc. | 5793-9704-01 | Capitale-Nationale | Active |
| Construction-Rénovation Clavel inc. | 5865-5556-01 | Laurentides | Active |
| Construction-Rénovation Denis Lepage Inc. | 5601-9565-01 | Capitale-Nationale | Active |
| Construction-Rénovation Francis Laporte inc. | 5786-6170-01 | Montérégie | Active |
| Construction-Rénovation Goodmen inc. | 5724-0657-01 | Laurentides | Active |
| Construction-Rénovation J.Marceau inc. | 5819-3301-01 | Chaudière-Appalaches | Active |
| Construction-Rénovation L.M.P. Inc. | 5673-3330-01 | Montérégie | Active |
| Construction-Rénovation Lehoux Rivard inc. | 5716-8304-01 | Chaudière-Appalaches | Active |
| Construction-Renovation Lenor inc. | 5714-9585-01 | Montréal | Active |
| Construction-Rénovation Levasseur inc. | 5796-1161-01 | Bas-Saint-Laurent | Active |
| Construction-Rénovation Louis Grandchamp inc. | 5740-5946-01 | Lanaudière | Active |
| Construction-Rénovation Marc Pépin inc. | 8356-7768-21 | Chaudière-Appalaches | Active |
| Construction-Rénovation Mirabel inc. | 5695-8937-01 | Laurentides | Active |
| Construction-Rénovation Sylvain Lemay inc. | 5713-3365-01 | Montérégie | Active |
| Construction-Rénovation Titan inc. | 5700-4871-01 | Abitibi-Témiscamingue | Active |