Company lists · Data refreshed September 2026

Top 25 Private security firms based in Los Angeles, United States

Name: Private security firms based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 133 companies tracked

RevenueBase identified 133 private security firms headquartered in Los Angeles, United States as of September 2026 and tracks 1,989 professional contacts across them, including 135 with verified work emails. New York is the largest hub.

This list covers private security firms headquartered in Los Angeles, United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

133Companies

1,989Contacts tracked

135Verified emails

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The 25 largest private security firms based in Los Angeles, United States

Ranked by team size

Top 25 of 133 private security firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names private security firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Professional Security Consultants, INCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	626
	“Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Source: company website · checked Sep 5, 2026
2	Global Security ConceptsPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	501-1,000	102
	“A security company committed to serving our clients at the highest level.” Source: company website · checked Sep 5, 2026
3	Black BOX Security, INCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	91
	“Black Box Security Inc.” Source: company website · checked Sep 5, 2026
4	LAW Security & InvestigationsPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	39
	“LSI is a full spectrum security solutions provider that specializes in manpower.” Source: company website · checked Sep 5, 2026
5	Bogaard Group International, INCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	32
	“At BGI, we approach every project with a best practices philosophy and an aim to balance risks and threats with global market standards.” Source: company website · checked Sep 5, 2026
6	Allied International SecurityPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	32
	“Allied International Security offers armed/unarmed Guards, Patrol Services, CCTV Surveillance for businesses, construction sites, schools, etc.” Source: company website · checked Sep 5, 2026
7	Guardian Eagle Security INCStrong evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	201-500	30
	“We provide the foremost in private security guards and patrol services available today.” Source: company website · checked Sep 5, 2026
8	Global Vision SecurityPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	26
	“Global Vision Security was founded by Xecutive Monster® with a vision for a security company considerably different from that of our competitors.” Source: company website · checked Sep 5, 2026
9	Savage Iii, INCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	201-500	23
	“Savage Inc.” Source: company website · checked Sep 5, 2026
10	California Panther SecurityPartial evidence	Los Angeles, United StatesHQ checked Sep 5, 2026	201-500	22
	“California Panther Security Inc.” Source: company website · checked Sep 5, 2026
11	Safehouse Security SolutionsPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	20
	“Safehouse Security Solutions specializes in delivering elite, world-class security services tailored for corporations, high-profile individuals, and VIPs internationally.” Source: company website · checked Sep 5, 2026
12	Franklin Global, INCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	16
	Source: company website · checked Sep 5, 2026
13	Aventus Security LLCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	201-500	13
	“At Aventus Security, we are more than just a security service provider – we are your partners in safeguarding what matters most.” Source: company website · checked Sep 5, 2026
14	American Global Security, INCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	12
	“American Global Security aims to place the bar high for personal protection solutions in California by using advanced methods, acquiring the greatest of expectations for our…” Source: company website · checked Sep 5, 2026
15	Armaplex SecurityPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	11
	“Valian Group dba Armaplex Security is a Los Angeles based Security and Risk Company with a focus on filling gaps in the Security Industry.” Source: company website · checked Sep 5, 2026
16	AAA Protective Security And Consulting Group INCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1-10	11
	Source: company website · checked Sep 5, 2026
17	Securitech Security Services INCIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1-10	10
	Source: company website · checked Sep 5, 2026
18	Mancini International, INCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	7
	“Mancini International is a corporate security company with a 30+ year track record of providing security for executives, heads of state, and corporate assets in 48 countries.” Source: company website · checked Sep 5, 2026
19	Estate Security Services, INCPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	7
	“Elite Protection for High-Net-Worth Clients, Luxury Brands & Exclusive Estates At Estate Security Services, Inc, security is more than just a service-it’s a lifestyle of…” Source: company website · checked Sep 5, 2026
20	DustwunPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1-10	7
	“DUSTWUN provides comprehensive bespoke security solutions for individuals and organizations around the globe.” Source: company website · checked Sep 5, 2026
21	Security Guard Solutions INCStrong evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	5
	“Security Guard Solutions provides our clients with private security services that are customized to meet their security needs and executed to the highest possible standards.” Source: company website · checked Sep 5, 2026
22	LOW Ready ProtectionIndirect evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	11-50	5
	“Low Ready Protection is a Veteran owned organization with over 20 years of industry experience.” Source: company website · checked Sep 5, 2026
23	Itac SecurityPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1-10	5
	“Founded by ex-Israeli Police Special Forces Officer, ITAC provides specialty security services and tactical training.” Source: company website · checked Sep 5, 2026
24	Aable SecurityPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	3
	“Aable Security has been protecting Los Angeles since 1998 with one promise, dependable security you can trust.” Source: company website · checked Sep 5, 2026
25	Globe Protective ServicesPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	1-10	2
	“Globe Protective Services is a Los Angeles based security company that was founded by an individual who recognized the increasing need for security services.” Source: company website · checked Sep 5, 2026

Showing 25 of 133 private security firms based in Los Angeles, United States

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Private security firms based in Los Angeles, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 148 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 133 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 private security firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Los Angeles, United States whose own description of what they do matches “private security firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among private security firms, and records with no verified work email. Companies headquartered outside Los Angeles 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 an evidence 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, 135 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 5, 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.

Private security firms by metro in the United States

Private security firms in New York148
Private security firms in Los Angeles133
Private security firms in Houston102
Private security firms in Miami82
Private security firms in Chicago62
Private security firms in Atlanta60
Private security firms in Dallas59
Private security firms in Austin49
Private security firms in Phoenix44
Private security firms in Las Vegas43
Private security firms in Orlando37
Private security firms in Denver33
Private security firms in Washington33
Private security firms in Tampa31
Private security firms in San Diego28
Private security firms in Seattle28
Private security firms in Charlotte27
Private security firms in Nashville27
Private security firms in San Antonio25
Private security firms in San Francisco25

Frequently asked

How many private security firms are there based in Los Angeles, United States?

RevenueBase identified 133 private security firms headquartered in Los Angeles, United States 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?

Professional Security Consultants, INC, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most private security firms?

New York leads with 148 headquartered companies, followed by Los Angeles (133) and Houston (102).

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 135 verified decision-maker contacts tracked across these 133 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 5, 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.