Martineau Coffrage Inc.
Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundationsSeptic systemsWells and water pumps
Call · 450 929-1661Septic systems in Varennes
In Varennes, 8 companies are listed as active for septic system work in RBQ data dated November 4, 2026. 6 (75%) have held their licence for 10 years or more, the oldest since 1999; none got its licence in the last 90 days. Nearest towns: Repentigny (11), Boucherville (17) and Sainte-Julie (10).
Get quotes for septic system work in VarennesFree, no obligation: describe your work once, licensed companies answer you.
Get my free quotes →9151-0446 Québec inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 929-0241Entreprises Serge Gaudette inc.
Septic systemsWells and water pumps
Call · 514 863-2581Biarritz Construction inc.
Renovation, construction and general workHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumpsAccessibility lifts
Call · 450 652-4242Massi Construction inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 929-1818Excavation E.S.M. inc.
Renovation, construction and general workSeptic systemsWells and water pumps
Call · 450 649-0442Other cities
Montréal 234Repentigny 11Boucherville 17Sainte-Julie 10L'Assomption 17Mascouche 17Terrebonne 46Longueuil 33Belœil 12Brossard 16Laval 132
Other trades in Varennes
Finding a septic system contractor in Varennes
Looking for a septic system contractor in Varennes? 1 of the 8 companies on the list work in this trade only; the others are also listed in other trades: renovation, construction and general work (6), wells and water pumps (6) and heating, ventilation and air conditioning (2).
Varennes ranks 17th of 120 cities in the Montérégie region for this trade, with 1% of the region's 552 companies.
The choice is limited in Varennes. Companies from nearby cities in the region, such as Montréal (234), Repentigny (11) and Boucherville (17), may also serve your area: ask them.
The RBQ numbers: septic systems in Varennes
8companies with an active licence
0new licences in 90 daysnone in the last 30 days
6have held their licence for 10 years or more75% · the oldest since 1999
6have a $40,000 licence bondand 2 at $20,000 · may compensate a client under RBQ rules
- All of them have a published phone number: you can call them directly.
- Most common subcategories: 2.4 On-site wastewater (septic) systems (8), 1.3 Buildings of all kinds (6), 1.4 Roads and pipelines (6), 2.2 Non-drilled water catchment works (6).
On this page: Renovation permits in Varennes
Useful guides: Septic tank pumping: how often and what to check
Open data of the Régie du bâtiment du Québec as of November 4, 2026, updated every night.
Required licence, issuing body and subcategories for this trade: Septic systems in Greater Montréal.
Homes in Varennes (2021 Census)
8,415households in a private dwelling
31%of dwellings built before 1981including 8% before 1961
79%of households own their home
62%of dwellings are single-detached houses
Source: Statistics Canada, 2021 Census, table 98-10-0233-01 (25% sample, rounded counts), Statistics Canada Open Licence.
Renovation permits in Varennes
According to the permits and certificates by-law of the City of Varennes, altering or renovating a house does not need a building permit when all of these conditions are met: the work is not covered by the PIIA (architectural integration plan) by-law, does not change the use, and does not alter the foundations, the structure, the interior partitions or exits, or the floor area or height of the building. It must also not add, close off or resize a window or door, change the class of the exterior wall cladding, or affect a fire-protection element, such as a fire separation or a fire alarm. Otherwise, a permit is required. The PIIA by-law applies in certain sectors of the city, and permit applications can be made online.
Official pages: Planning by-laws (in French) ↗ · Online permit application (in French) ↗ · Printable checklist before you sign