| Construction Samuel Berthiaume Inc. | 5762-3027-01 | Montérégie | Active |
| Construction Samuel Chamberland inc. | 5690-3289-01 | Montérégie | Active |
| Construction Samuel Chartier Inc. | 5818-3153-01 | Chaudière-Appalaches | Active |
| Construction Samuel Desjardins inc. | 5848-6143-01 | Mauricie | Active |
| Construction Samuel Desrosiers inc. | 5843-2246-01 | Côte-Nord | Active |
| Construction Samuel Girard inc. | 5819-8524-01 | Laurentides | Active |
| Construction Samuel Goupil Inc. | 5716-8072-01 | Chaudière-Appalaches | Active |
| Construction Samuel Guérard inc. | 5609-0186-01 | Chaudière-Appalaches | Active |
| Construction Samuel Ouimet inc. | 5686-3400-01 | Lanaudière | Active |
| Construction Samuel Parent inc. | 5859-7592-01 | Mauricie | Active |
| Construction Samuel Renaud inc | 5625-8478-01 | Lanaudière | Active |
| Construction Sandré inc. | 5796-0510-01 | Laval | Active |
| Construction Santco Inc. | 8266-7866-23 | Montréal | Active |
| Construction Santerre inc. | 5808-2538-01 | Bas-Saint-Laurent | Active |
| Construction Santos inc. | 5740-5268-01 | Laval | Active |
| Construction Saucier Héroux inc. | 5760-8671-01 | Abitibi-Témiscamingue | Active |
| Construction Sauriol inc. | 5825-1455-01 | Laurentides | Active |
| Construction Sauvageau & Frères inc. | 5874-1240-01 | Capitale-Nationale | Active |
| Construction Sauvageau Inc. | 8354-2845-10 | Nord-du-Québec | Active |
| Construction Savadenn inc. | 5863-8255-01 | Montérégie | Active |
| Construction Savco inc. | 5659-9012-01 | Montréal | Active |
| Construction Savcon inc. | 5657-4841-01 | Montréal | Active |
| Construction Savoir-Faire inc. | 5800-4193-01 | Montérégie | Active |
| Construction Sawaz Inc. | 5615-8710-01 | Montréal | Active |
| Construction Sawdust inc. | 5749-6739-01 | Montréal | Active |
| Construction SBCO inc. | 5676-1505-01 | Lanaudière | Active |
| Construction SBEC Inc. | 5612-8523-01 | Montréal | Active |
| Construction SC4 inc. | 5849-4592-01 | Montérégie | Active |
| Construction Scandinor inc. | 5811-5098-01 | Laurentides | Active |
| Construction Scandium inc. | 5784-8087-01 | Laval | Active |
| Construction Scantland inc. | 5757-7892-01 | Gaspésie--Îles-de-la-Madeleine | Active |
| Construction Schorer inc. | 5585-7957-01 | Montérégie | Active |
| Construction Scott inc. | 5834-1009-01 | Montérégie | Active |
| Construction Scremin & Beaulieu Inc. | 5645-3491-01 | Côte-Nord | Active |
| Construction Sculptura inc. | 5842-8632-01 | Saguenay--Lac-Saint-Jean | Active |
| Construction Seban inc. | 5863-0211-01 | Estrie | Active |
| Construction Sébastien Bourdeau Inc. | 8322-1739-48 | Estrie | Active |
| Construction Sébastien Chaput inc. | 5774-7693-01 | Laurentides | Active |
| Construction Sébastien Cloutier inc. | 5801-6841-01 | Montérégie | Active |
| Construction Sébastien Desgagnés inc. | 5740-6498-01 | Estrie | Active |
| Construction Sébastien Dubé inc. | 5769-4671-01 | Bas-Saint-Laurent | Active |
| Construction Sébastien Forest inc. | 5738-6310-01 | Laval | Active |
| Construction Sébastien Gareau inc. | 5657-1094-01 | Lanaudière | Active |
| Construction Sébastien Lamothe inc. | 5820-4991-01 | Centre-du-Québec | Active |
| Construction Sébastien Lombardo inc. | 5852-0982-01 | Montérégie | Active |
| Construction Sébastien Péloquin inc. | 5808-1894-01 | Laurentides | Active |
| Construction Sébastien Raymond inc. | 5870-3471-01 | Estrie | Active |
| Construction Sébastien Rousseau inc. | 5868-5793-01 | Mauricie | Active |
| Construction Sébastien Roy Inc | 8343-2948-04 | Lanaudière | Active |
| Construction Sébastien Tanguay inc. | 5791-3766-01 | Lanaudière | Active |