New construction, renovation, additions. We handle everything, from the plans to the last screw.
Whether you are dreaming of a new build or transforming the home you already own, we approach every project with the same rigour. From design through to finishing, including coordinating the trades. You have one point of contact.
Our residential projects on the South Shore include single-family homes, condos, additions, major renovations and heritage restorations.
From the slab to the handover of the keys. We coordinate the plans, the trades and the schedule, so you follow the progress without managing fifteen subcontractors.
Full refits, structural work, heritage restoration. We work within the existing building while respecting the character of the home.
Adding a room, a storey or an annex. We handle the connection to the existing structure so the addition never looks tacked on.
Finished basements, converted garages, unused space turned into living space. Insulation, soundproofing and finishing included.
The two most technical rooms in the house. Plumbing, electrical, ventilation and finishing all coordinated by the same team.
The complete building envelope. As an authorized Isothermic dealer, we also supply and install the doors and windows.
You describe your project. We call you back within 48 business hours to understand what you have in mind.
We come to you to see the existing building, take measurements and assess the real constraints.
You receive a detailed quote, line by line. No opaque lump sum. You see exactly what you are paying for.
One point of contact from start to finish. We coordinate the trades, the deliveries and the schedule.
A final inspection with you, correction of any items noted, then handover of documents and applicable warranties.



In most South Shore municipalities, yes. A permit is required as soon as you modify the structure, the floor area or the exterior appearance of the building. That is almost always the case for an addition, an added storey or a major renovation. We guide you through the process with your city.
Yes. We carry out residential projects throughout Montreal's South Shore: Longueuil, Brossard, Boucherville, Saint-Hubert, La Prairie, Candiac, Saint-Bruno, Mont-Saint-Hilaire, Chambly and Beloeil.
Yes. Construction Adexy holds RBQ licence 5798-6135-01. You can verify it at any time in the public register of the Régie du bâtiment du Québec.
No. You can call us with nothing more than an idea. We work from design through to finishing and coordinate the professionals your project requires. If you already have plans, we work with them.
Addition, major renovation, new construction, basement, kitchen — tell us your vision. We call you back within 48 hours with an honest estimate.