Company lists · Data refreshed September 2026

Top 25 Building maintenance contractors based in Canada

Name: Building maintenance contractors based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 998 companies tracked

RevenueBase identified 998 building maintenance contractors headquartered in Canada as of September 2026 and tracks 13,991 professional contacts across them, including 5,077 with verified work emails. Toronto is the largest hub.

This list covers building maintenance contractors headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

998Companies

13,991Contacts tracked

5,077Verified emails

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The 25 largest building maintenance contractors based in Canada

Ranked by team size

Top 25 of 998 building maintenance contractors based in Canada, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to building maintenance contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	GDI Integrated Facility Services	Indirect evidence	Lasalle, QC, CanadaHQ checked Sep 16, 2026	10001+	2,560 contacts →
	Indirect evidence “GDI provides unequalled capability and expertise in the facility services sector across Canada and the United States.” Source: RevenueBase Database · checked Sep 16, 2026
2	Modern Niagara	Indirect evidence	Kanata, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	1,556 contacts →
	Indirect evidence “We build for life.” Source: RevenueBase Database · checked Sep 16, 2026
3	Ainsworth INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	1,405 contacts →
	Partial evidence “Our customers depend on their buildings, industrial assets, processes, and energy management, to help them meet competitive challenges.” Source: RevenueBase Database · checked Sep 16, 2026
4	BEST	Partial evidence	Coquitlam, BC, CanadaHQ checked Sep 16, 2026	1,001-5,000	343 contacts →
	Partial evidence “BEST is one of Canada’s leading janitorial and maintenance service providers, specializing in high-traffic public facilities across the country.” Source: RevenueBase Database · checked Sep 16, 2026
5	Navada	Partial evidence	Longueuil, QC, CanadaHQ checked Sep 16, 2026	501-1,000	280 contacts →
	Partial evidence “Thanks to its multidisciplinary team, Navada offers a simple, turnkey approach to building services engineering.” Source: RevenueBase Database · checked Sep 16, 2026
6	Gateway Mechanical Services	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 16, 2026	201-500	208 contacts →
	Indirect evidence “Founded in 1968, Gateway Mechanical is a privately owned company that has established itself as a leader in the commercial and industrial refrigeration, heating and air…” Source: RevenueBase Database · checked Sep 16, 2026
7	Right Time Group Of Companies	Indirect evidence	St. Catharines, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	193 contacts →
	Indirect evidence “The Right Time Group of Companies has been proudly providing a full range of home HVAC solutions to customers across Ontario, Manitoba, Saskatchewan, Alberta and British Columbia…” Source: RevenueBase Database · checked Sep 16, 2026
8	Alpine Building Maintenance	Strong evidence	Delta, BC, CanadaHQ checked Sep 16, 2026	1,001-5,000	168 contacts →
	Strong evidence “About Us: Alpine Building Maintenance is a proudly Canadian, minority-owned, and operated provider of premium facility cleaning and maintenance services.” Source: RevenueBase Database · checked Sep 16, 2026
9	Team Group	Partial evidence	Aurora, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	137 contacts →
	Partial evidence “TEAM Group is a self-performing provider of industrial cleaning, integrated facility management, technical cleaning, facility maintenance, and specialized industrial services…” Source: RevenueBase Database · checked Sep 16, 2026
10	Cleanmark North America	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	103 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
11	Milani Plumbing, Heating, & AIR Conditioning	Indirect evidence	Burnaby, BC, CanadaHQ checked Sep 16, 2026	51-200	95 contacts →
	Indirect evidence “Milani has been specializing in servicing the plumbing, drainage and heating needs of commercial and residential clients since 1956.” Source: RevenueBase Database · checked Sep 16, 2026
12	ROY	Indirect evidence	Anjou, QC, CanadaHQ checked Sep 16, 2026	1,001-5,000	92 contacts →
	Indirect evidence “Nous offrons une gamme complète de services intégrés d'entretien d'immeubles par l'intermédiaire de cinq filiales spécialisées et plus de 1 500 employés à votre service.” Source: RevenueBase Database · checked Sep 16, 2026
13	Baulne	Partial evidence	Lachine, QC, CanadaHQ checked Sep 16, 2026	51-200	89 contacts →
	Partial evidence “BAULNE is a company based in Montreal and Quebec City, providing HVAC building mechanics services (heating/cooling) for the following sectors: industrial, commercial…” Source: RevenueBase Database · checked Sep 16, 2026
14	Freshco	Indirect evidence	Burlington, ON, CanadaHQ checked Sep 16, 2026	51-200	88 contacts →
	Indirect evidence “Freshco is an award-winning facilities management firm with over 30 years of experience serving Fortune 500 brands across North America.” Source: RevenueBase Database · checked Sep 16, 2026
15	MOM Cleaning	Indirect evidence	Mont-royal, QC, CanadaHQ checked Sep 16, 2026	201-500	85 contacts →
	Indirect evidence “MOM Cleaning is a commercial cleaning service provider established in 2004.” Source: RevenueBase Database · checked Sep 16, 2026
16	Quickcontractors.com INC	Indirect evidence	Guelph, ON, CanadaHQ checked Sep 16, 2026	51-200	80 contacts →
	Indirect evidence “Recently completing its 1.8 Millionth installation and having being tagged as the No.1 fastest growing construction company in Canada by Canadian Business magazine…” Source: RevenueBase Database · checked Sep 16, 2026
17	Impact Cleaning Services	Indirect evidence	Etobicoke, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	74 contacts →
	Indirect evidence “For seven decades, our approach has been about doing the little things right.” Source: RevenueBase Database · checked Sep 16, 2026
18	Irestify	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	201-500	70 contacts →
	Indirect evidence “iRestify, the tech-enabled cleaning service loved by multi-family and office property managers across North America.” Source: RevenueBase Database · checked Sep 16, 2026
19	EPM Mecanic	Indirect evidence	Laval, QC, CanadaHQ checked Sep 16, 2026	51-200	67 contacts →
	Indirect evidence “Les origines d’EPM Mecanic remontent à 1978, alors sous le nom d’E.P.M.” Source: RevenueBase Database · checked Sep 16, 2026
20	Whiterose Janitorial Services	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	501-1,000	64 contacts →
	Indirect evidence “Whiterose Janitorial Services Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
21	Lysair	Indirect evidence	Laval, QC, CanadaHQ checked Sep 16, 2026	51-200	63 contacts →
	Indirect evidence “Depuis 1987, Lysair se démarque par la qualité de ses projets et de ses services d’entretien en ventilation, climatisation et chauffage dans les secteurs résidentiels…” Source: RevenueBase Database · checked Sep 16, 2026
22	GSF Canada INC	Indirect evidence	Laval, QC, CanadaHQ checked Sep 16, 2026	501-1,000	60 contacts →
	Indirect evidence “GSF a été fondée en 1963, compte plus de 20 employés et 90 succursales dans le monde.” Source: RevenueBase Database · checked Sep 16, 2026
23	GNR Corbus	Indirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 16, 2026	201-500	58 contacts →
	Indirect evidence “Que ce soit en climatisation, en ventilation, en réfrigération, en congélation, en plomberie, en chauffage ou pour les procédés de gaz naturel, nous avons un technicien qualifié…” Source: RevenueBase Database · checked Sep 16, 2026
24	PSL Patrick Sprack LTD	Indirect evidence	Sudbury, ON, CanadaHQ checked Sep 16, 2026	51-200	51 contacts →
	Indirect evidence “PSL is one of the fastest growing mechanical service providers in Northern Ontario.” Source: RevenueBase Database · checked Sep 16, 2026
25	Customair	Indirect evidence	Port Coquitlam, BC, CanadaHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence “Custom Air started in 1991 when the founders decided that the commercial and industrial HVAC industry would benefit from a different kind of company - a company aimed at providing…” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: building maintenance contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names building maintenance contractors.
Partial evidence: Its own public description names part of building maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building maintenance contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 998 building maintenance contractors based in Canada

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Building maintenance contractors based in Canada at a glance

As of Sep 16, 2026

36.3%Verified-email coverage

14.0Average contacts per company

11-50Median size (employees)

8.1%Largest-city concentration · Toronto

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

428

11-50

338

51-200

148

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 998 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among building maintenance contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “building maintenance contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names building maintenance contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among building maintenance contractors, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 5,077 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Building maintenance contractors by metro

Building maintenance contractors in Toronto81
Building maintenance contractors in Calgary64
Building maintenance contractors in Edmonton56
Building maintenance contractors in Vancouver35
Building maintenance contractors in Mississauga33
Building maintenance contractors in Ottawa33
Building maintenance contractors in Montreal28

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names building maintenance contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many building maintenance contractors are there based in Canada?

RevenueBase identified 998 building maintenance contractors headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

GDI Integrated Facility Services, headquartered in Lasalle, tops this list with the largest team on record.

Which city has the most building maintenance contractors?

Toronto leads with 81 headquartered companies, followed by Calgary (64) and Edmonton (56).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,077 verified decision-maker contacts tracked across these 998 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.