5 Piliers inc.
Renovation, construction and general workPlumbers
Call · 514 829-5649Plumbers on the Plateau-Mont-Royal (Montréal)
Le Plateau-Mont-Royal has 9 plumbing companies; years licensed on the Plateau-Mont-Royal: 20 or more 3, 10 to 19 1, under 10 5.
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Ahuntsic-Cartierville 22Anjou 17Côte-des-Neiges 12Côte-Saint-Luc, Hampstead and Montréal-West 11Lachine 14LaSalle 17Le Plateau-Mont-Royal 9Le Sud-Ouest 20Mercier–Hochelaga-Maisonneuve 16Montréal-Nord 16Mount Royal (TMR) 1NDG (Notre-Dame-de-Grâce) 7Outremont 4Rivière-des-Prairies–Pointe-aux-Trembles 51Rosemont–La Petite-Patrie 12Saint-Laurent 30Saint-Léonard 28Verdun 6Ville-Marie (Downtown) 11Villeray–Saint-Michel–Parc-Extension 13West Island 32Westmount 1All of Montréal
Pégase construction inc.
Renovation, construction and general workElectriciansPlumbersHeating, ventilation and air conditioningSeptic systemsWells and water pumps
Call · 514 603-0266Plomberie et chauffage Fairmount inc.
PlumbersHeating, ventilation and air conditioning
Call · 514 279-9797Tecksol DGE inc.
Renovation, construction and general workElectriciansPlumbersHeating, ventilation and air conditioning
Call · 514 985-5633Opsis Services Drummondville S.E.C.
Renovation, construction and general workElectriciansPlumbersHeating, ventilation and air conditioning
Call · 514 603-02669523-0462 Québec inc.
Plumbers
Call · 514 700-6731OPSIS gestion d'infrastructures inc.
Renovation, construction and general workElectriciansPlumbersHeating, ventilation and air conditioning
Call · 514 603-0266Construction Multi-Mécanique inc.
Renovation, construction and general workPlumbersHeating, ventilation and air conditioningSeptic systemsWells and water pumps
Call · 819 636-0376Rénovations Martin Martin inc.
Plumbers
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Le Plateau-Mont-Royal by the numbers
Le Plateau-Mont-Royal: years licensed, plumbers
Le Plateau-Mont-Royal, 9 plumbing companies — under 5 years (2), 5 to 9 years (3), 10 to 19 years (1), 20 years or more (3). Median on the Plateau-Mont-Royal: 2017. Longest licensed on the Plateau-Mont-Royal: Plomberie et chauffage Fairmount inc. (1984), Rénovations Martin Martin inc. (1994) and OPSIS gestion d'infrastructures inc. (1999). Newest: 9523-0462 Québec inc. (September 18, 2026) and 5 Piliers inc. (October 16, 2023).
Le Plateau-Mont-Royal: licences, plumbers
Other trades on the Plateau-Mont-Royal: renovation (6), heating (6), electrical (4), septic (2); single trade: 2 of 9. Subcategories on the Plateau-Mont-Royal: small buildings (6), any building (6), natural gas (6), oil (6), hydronic (6), piping (5). Bonds on the Plateau-Mont-Royal: 6 at $40,000, 3 at $20,000; 8 CMMTQ licences. 3 have another name.
Comparisons, Le Plateau-Mont-Royal
First licences on the Plateau-Mont-Royal, by decade: 1980s (1), 1990s (2), 2010s (4), 2020s (2). 20 years or more: 33% of licences on the Plateau-Mont-Royal, 5th of 22 areas (island: 24%).
Neighbours of Le Plateau-Mont-Royal
Le Plateau-Mont-Royal covers the Plateau, the Mile End and the Mile-Ex. Le Plateau-Mont-Royal rank: 17th of 22 areas, between Côte-Saint-Luc, Hampstead and Montréal-West (11) and NDG (Notre-Dame-de-Grâce) (7). Le Plateau-Mont-Royal share: 3% of 350 plumbers.
Permits issued, Le Plateau-Mont-Royal
Plumbing on the Plateau-Mont-Royal: 33 of 1,391 permits, 2%. By keyword, Le Plateau-Mont-Royal: bathrooms 33. Plumbing: 2% on the Plateau-Mont-Royal, 4% across Montréal. In all, Le Plateau-Mont-Royal: 1,391 permits, 1,258 of them alterations. In the ranking, Le Plateau-Mont-Royal is 12th of 19 (Montréal-Nord (36), Villeray–Saint-Michel (33)). Peak on the Plateau-Mont-Royal: 7 in February 2026; low: 0 in July 2026.
Source: Ville de Montréal, “Permis de construction, transformation et démolition”, open data, CC BY 4.0 · permits issued October 27, 2025 to October 26, 2026 · dataset updated October 29, 2026 · trades counted from the work descriptions.
Le Plateau-Mont-Royal: permits and rules
On the Plateau-Mont-Royal, you can walk in without an appointment at the borough’s permit counter, or file interior and exterior renovation applications online. For an extension or a new building, you must first book a preliminary meeting by email. The borough’s PIIA (site planning and architectural integration) By-law 2005-18 applies to the whole territory, notably to new buildings, extensions and some work affecting the appearance of a building or a heritage property.
Official pages: Permit counter – Le Plateau-Mont-Royal (in French) ↗ · PIIA – Le Plateau-Mont-Royal (in French) ↗