Company lists · Data refreshed September 2026

Top 25 Private investigation companies based in Canada

RevenueBase identified 131 company matches for private investigation companies associated with Canada as of September 2026 and tracks 932 professional contacts across them, including 151 with verified work emails. Toronto is the largest hub.

This list covers company matches for private investigation companies associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
131Companies
932Contacts tracked
151Verified emails
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The 25 largest private investigation companies based in Canada

Ranked by team size
Top 25 of 131 company matches for private investigation companies based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchToronto, ON, CanadaHQ recorded Sep 20, 202651-20072 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchYork, ON, CanadaHQ recorded Sep 20, 2026201-50064 contacts →

Exact match

“Our highly organized, hard-working and intelligent office staff are here to ensure you receive the best possible service.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchMontréal-nord, CanadaHQ recorded Sep 20, 202651-20053 contacts →

Exact match

“SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchWaterloo, ON, CanadaHQ recorded Sep 20, 202651-20045 contacts →

Exact match

“Larrek Investigations has been in operation since April 30, 1980, with our current ownership having been in place since October 31, 2008.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchToronto, ON, CanadaHQ recorded Sep 20, 2026201-50044 contacts →

Exact match

“Welcome to Skanna Security & Investigations The SKANNA ADVANTAGE … our company standards All Skanna Investigators and Security Guards are licensed by the Government of Ontario…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchSaint-Hubert, QC, CanadaHQ recorded Sep 20, 202651-20033 contacts →

Exact match

“Groupe Trak est une firme spécialisée dans le secteur de la sécurité corporative qui offre une gamme complète de services professionnels et personnalisés : SERVICES RH…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchToronto, ON, CanadaHQ recorded Sep 20, 202651-20033 contacts →

Exact match

“Full service security and investigative services firm operating out of head office in Toronto, Ontario.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchMississauga, ON, CanadaHQ recorded Sep 20, 202651-20027 contacts →

Exact match

“Aberdeen Investigation Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchQuébec, QC, CanadaHQ recorded Sep 20, 202651-20025 contacts →

Exact match

“Référence de choix en matière d’investigation et de protection, Haute Protection la Capitale offre une gamme étendue de solutions spécialisées à des clients provenant de toutes…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchDieppe, NB, CanadaHQ recorded Sep 20, 2026501-1,00019 contacts →

Exact match

“Admiral is a licensed and bonded Provincial Private Security and Investigation Agency.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchToronto, ON, CanadaHQ recorded Sep 20, 202651-20016 contacts →

Exact match

“Corporate Investigations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchToronto, ON, CanadaHQ recorded Sep 20, 20261-1014 contacts →

Exact match

“The concept of lawyers who investigate or ‘investigation counsel,’ is not something new to Canada’s justice system.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchMarkham, ON, CanadaHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Reed Research is your powerful partner in Insurance, Corporate and Legal Investigations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchTrenton, ON, CanadaHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Integrity Investigative Solutions Limited is a full-service Private Investigation and Security Service agency that provides a wide range of professional investigative services to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchBarrie, ON, CanadaHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Mitchell Partners Investigation Services is a full-service private investigation and consulting firm based in Toronto, Canada.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMontreal, QC, CanadaHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“Civil and criminal Investigations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLangley, BC, CanadaHQ recorded Sep 20, 20261-108 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchMontréal, QC, CanadaHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Diligence Investigation Canada est le fruit d’un parcours débuté il y a plus de 27 ans par Daniel Girard, un passionné du renseignement qui a d’abord fait ses armes dans le…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchStoney Creek, ON, CanadaHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Full service investigation firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchBrampton, BC, CanadaHQ recorded Sep 20, 202611-506 contacts →

Exact match

“The “AXIS” of any object is at the center of its action; “Vero“ from the Latin “VERITAS” means truth.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchMontréal, QC, CanadaHQ recorded Sep 20, 202611-506 contacts →

Exact match

“Securi-Check Group works in the field of investigation, pre-employment checks, pre-rental checks and fingerprinting.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchOakville, ON, CanadaHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Klatt Investigations is a top-tier Canadian private investigations firm with partnerships to the most highly regarded private investigation firms worldwide.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchOttawa, ON, CanadaHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Inquisitive Intel is a full-service Private Intelligence and Cyber Security firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchVancouver, BC, CanadaHQ recorded Sep 20, 202611-504 contacts →

Exact match

“Chas & Associates is a boutique investigation firm based in Vancouver, British Columbia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchToronto, ON, CanadaHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Specialty Risk & Intelligence Services Inc.(SRIS) is a multidisciplinary Intelligence, Investigation and Risk Consulting agency that was founded by a group of industry experts.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 131 private investigation companies based in Canada

See the full list, filter by size, metro and specialty, and access 151 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Private investigation companies based in Canada at a glance

As of Sep 20, 2026
16.2%Verified-email coverage
7.1Average contacts per company
1-10Median size (employees)
17.6%Largest-city concentration · Toronto
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
70
11-50
36
51-200
14
201-500
6
501-1,000
3

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 131 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Canada whose business descriptions match “private investigation companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 151 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “private investigation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many private investigation companies are there based in Canada?

RevenueBase identified 131 company matches for private investigation companies associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

The Investigators Group INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most private investigation companies?

Toronto leads with 23 company records, followed by Ottawa (8) and Montreal (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 151 professional contacts with verified work emails tracked across these 131 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.