9282-4457 Québec inc.
Renovation, construction and general work
Call · 450 589-8566L’Assomption has 258 licensed companies; years licensed in L’Assomption: 20 or more 52, 10 to 19 63, under 10 143.

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Renovation, construction and general work
Call · 450 589-8566Specialty contractors
Call · 450 589-6306Specialty contractors
Call · 514 973-9533Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 450 589-9775Specialty contractors
Call · 438 498-5990Septic systemsWells and water pumps
Call · 514 952-7965Electricians
Call · 450 589-9279Renovation, construction and general workConcrete and foundationsAccessibility lifts
Call · 450 589-8100Renovation, construction and general workMasonry
Call · 514 212-1448Specialty contractors
Call · 514 251-9568Renovation, construction and general workNew home builders
Call · 514 816-7664Heating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 450 589-6226Specialty contractors
Call · 450 589-5214Specialty contractors
Call · 514 554-0075Specialty contractors
Call · 514 444-9772Specialty contractors
Call · 514 647-6368Specialty contractors
Call · 450 705-1500Plumbers
Call · 514 582-1426Specialty contractors
Call · 514 977-3062Specialty contractors
Call · 514 663-3232Specialty contractors
Call · 450 589-9994Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesSeptic systemsWells and water pumps
Call · 514 705-5529Renovation, construction and general work
Call · 514 926-5694Septic systemsWells and water pumps
Call · 450 589-4710Renovation, construction and general work
Call · 514 867-3493Renovation, construction and general work
Call · 450 589-4936Specialty contractors
Call · 438 862-1101Renovation, construction and general work
Call · 514 432-6150Specialty contractors
Call · 450 898-3394Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 450 589-0832Renovation, construction and general work
Call · 450 589-8456Renovation, construction and general workPlumbersHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 450 585-9004Specialty contractors
Call · 514 838-6491Renovation, construction and general work
Call · 514 817-4394Specialty contractors
Call · 514 823-3544Septic systemsWells and water pumps
Call · 450 589-3825Specialty contractors
Call · 514 515-4741L’Assomption, 258 licensed companies — under 5 years (81), 5 to 9 years (62), 10 to 19 years (63), 20 years or more (52). Median in L’Assomption: 2017. Longest licensed in L’Assomption: Plomberie M.J. inc. (1984), 9468-3430 Québec inc. (1984) and Jean Raynault Inc. (1984). Newest: Auberge au Sommet des Vents inc. (September 23, 2026) and Madero Construction inc. (September 22, 2026). L’Assomption, licences per year: 2022 (18), 2023 (14), 2024 (18), 2025 (19), 2026 (11).
L’Assomption, trades: renovation (102), specialty (85), heating (36), stoves (24), septic (17), electrical (17), wells (16), plumbing (15), masonry (11), new homes (11), foundations (10), roofing (7). Subcategories in L’Assomption: any building (91), small buildings (80), framing (38), home ventilation (25), wood heating (24), electrical (17). Bonds in L’Assomption: 115 at $40,000, 143 at $20,000. 56 have another name.
2,410 renter and 6,795 owner households in L’Assomption; single-detached houses 60%. Periods in L’Assomption: before 1961 11%, 1961-1980 21%, 1981-2000 27%, after 2000 41%. 36 dwellings per company in L’Assomption (Montréal 162).
First licences in L’Assomption, by decade: 1980s (13), 1990s (17), 2000s (35), 2010s (86), 2020s (107). 20 years or more: 20% of licences in L’Assomption, 15% in Montréal. L’Assomption: 28 contractors per 1,000 dwellings; town average 17.6, highest Mirabel (32.4), lowest Pointe-Claire (8). Region of L’Assomption: Lanaudière, 5,107 licensed companies in all.
L’Assomption rank: 13th of 26 towns, between Boucherville (264) and Châteauguay (246). Close to L’Assomption: Repentigny (549), Mascouche (520) and Terrebonne (1,151).
One public construction tender is open in L’Assomption, according to SEAO and CanadaBuys as of November 3:
The tenders board · only the official notice counts.
According to the City of L’Assomption, any project to build, enlarge, renovate or alter a building needs a building permit. Work on an existing building whose cost (labour and materials) is $3,000 or less before taxes does not need one, as long as it does not affect the foundations, the structure or the interior partitions, does not increase the floor area, does not affect any fire-protection element, and does not involve adding or closing off a window or replacing the exterior cladding. Some sectors and types of work are subject to a PIIA (architectural integration plan), authorized by city council after a recommendation from the planning advisory committee. You can apply for a permit online.
Official pages: Permits and certificates (in French) ↗ · Printable checklist before you sign
Masonry — 11 licence holders in L’Assomption, 9 with “mason” or “brick” in their name.
Concrete and foundations — 10 companies in L’Assomption; the oldest licence dates from 1984.
Wood stoves and fireplaces — In L’Assomption, 24 companies, the oldest licensed since 1984.
New home builders — 11 companies in L’Assomption, 7 of them with “construction” or “builder” in the name.
Septic systems — In L’Assomption, 17 companies, the oldest licensed since 1984.
Wells and water pumps — 16 licence holders in L’Assomption, the first licence in 1984.