Demtec Construction inc.
Renovation, construction and general work
Call · 514 880-6946RBQ data dated November 3, 2026: 63 companies active in Saint-Constant for renovation or construction work. 16 (25%) have held their licence for 10 years or more, the oldest since 1997; 3 got theirs in the last 90 days. Close by: Candiac (80), La Prairie (56) and Brossard (210).

Renovation, construction and general work
Call · 514 880-6946Renovation, construction and general workPlumbersHeating, ventilation and air conditioning
Call · 514 779-7700Renovation, construction and general work
Call · 514 726-8181Renovation, construction and general work
Call · 514 766-6666Renovation, construction and general work
Call · 438 868-5525Renovation, construction and general work
Call · 438 881-3463Renovation, construction and general work
Call · 438 396-4070Renovation, construction and general work
Call · 514 619-9188Renovation, construction and general work
Call · 438 492-4098Renovation, construction and general work
Call · 514 442-5123Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 973-7671Renovation, construction and general work
Call · 514 503-3889Renovation, construction and general workSeptic systemsWells and water pumps
Call · 514 933-5057Renovation, construction and general workSeptic systemsWells and water pumps
Call · 514 977-1269Renovation, construction and general work
Call · 514 647-4340Renovation, construction and general work
Call · 450 638-4369Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 808-1701Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 779-8481Renovation, construction and general work
Call · 438 820-9878Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 581-4420Renovation, construction and general work
Call · 514 766-6666Renovation, construction and general work
Call · 450 993-1358Renovation, construction and general workPainters
Call · 438 394-7365Renovation, construction and general work
Call · 514 895-0124Renovation, construction and general work
Call · 514 885-4168Renovation, construction and general work
Call · 514 794-8002Renovation, construction and general workNew home builders
Call · 514 894-4894Renovation, construction and general work
Call · 514 946-8708Renovation, construction and general work
Call · 514 467-2821Renovation, construction and general work
Call · 438 499-8440Renovation, construction and general work
Call · 514 430-3377Renovation, construction and general work
Call · 514 583-7501Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 438 324-0779Renovation, construction and general work
Call · 514 886-9153Renovation, construction and general work
Call · 514 884-5984Renovation, construction and general work
Call · 450 635-8436Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 995-2901Renovation, construction and general work
Call · 438 366-2309Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 514 791-7876Renovation, construction and general work
Call · 514 250-2233Ad · Featured placement · examplePreview only — this is not a contractor listing
Montréal 3,211Candiac 80La Prairie 56Brossard 210Châteauguay 96Longueuil 442Pointe-Claire 47Dollard-des-Ormeaux 79Chambly 85Laval 1,220Saint-Bruno-de-Montarville 80
Looking for a renovation contractor in Saint-Constant? 43 of the 63 companies on the list work in this trade only; the others are also listed in other trades: heating, ventilation and air conditioning (10), wood stoves and fireplaces (8) and electricians (3).
In the Montérégie region, 4,184 companies work in this trade across 146 cities; Saint-Constant has 63 of them (17th).
On this page: Renovation permits in Saint-Constant
Useful guides: Multigenerational home in Québec: tax credit and permits · Digging and retaining walls: locate request and permits · Rebuilding a balcony: fibreglass deck, railings, permits
Open data of the Régie du bâtiment du Québec as of November 3, 2026, updated every night.
Required licence, issuing body and subcategories for this trade: Renovation, construction and general work in Greater Montréal.
Source: Statistics Canada, 2021 Census, table 98-10-0233-01 (25% sample, rounded counts), Statistics Canada Open Licence.
According to the City of Saint-Constant, most construction and renovation work needs a permit, which must be obtained before the work starts. To get it, you give the planning department all the plans and documents describing the project. A permit for minor work can be applied for online, and the request can be tracked online; every meeting with the land-use planning department is by appointment.
Official pages: Permits for construction and renovation work (in French) ↗ · Printable checklist before you sign