Company lists · Data refreshed September 2026

Top 25 Building security consultants worldwide

RevenueBase identified 3,558 building security consultants worldwide as of September 2026 and tracks 36,566 professional contacts across them, including 7,707 with verified work emails. The United States is the largest market and London the largest hub.

This list covers building security consultants worldwide, 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 27, 2026. Country and city lists for building security consultants follow the table.

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 27, 2026 86% judged on-target in blind review
3,558Companies
36,566Contacts tracked
7,707Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest building security consultants worldwide

Ranked by team size
Top 25 of 3,558 building security consultants worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to building security consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceColumbia, MD, United StatesHQ checked Sep 27, 20261,001-5,0001,655 contacts →

Indirect evidence

“Worldwide, we are most recognized for our leadership in fire protection engineering, a tradition of responsibility we have advanced with pride since 1939.”

Source: RevenueBase Database · checked Sep 27, 2026
2Strong evidencePearl River, NY, United StatesHQ checked Sep 27, 20265,001-10,0001,050 contacts →

Strong evidence

“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceWestwood, MA, United StatesHQ checked Sep 27, 20261,001-5,000748 contacts →

Partial evidence

“Improving Security.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceSpainHQ checked Sep 27, 20261,001-5,000659 contacts →

Indirect evidence

“comienzos de 1989 se funda SABICO SEGURIDAD S.A, estando inscrita en el Registro de Empresas de Seguridad con el nº 1731.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceMiami, FL, United StatesHQ checked Sep 27, 20261,001-5,000553 contacts →

Partial evidence

“Security Alliance is a highly experienced provider of security solutions for private and business environments.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 2026501-1,000519 contacts →

Partial evidence

“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidencePhoenix, AZ, United StatesHQ checked Sep 27, 2026201-500354 contacts →

Partial evidence

“Since 1985, Telgian has served as a trusted partner to clients around the globe, providing innovative fire, security, life safety consulting and engineering/design services…”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceSão Paulo, BrazilHQ checked Sep 27, 20261,001-5,000304 contacts →

Indirect evidence

“Há mais de 25 anos no mercado, com atuação nacional e com uma estrutura moderna, o Grupo Liberdade tem se destacado na execução de serviços de segurança que não se limitam a…”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceRockville Centre, NY, United StatesHQ checked Sep 27, 20261,001-5,000275 contacts →

Partial evidence

“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.”

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceAjman, United Arab EmiratesHQ checked Sep 27, 2026501-1,000261 contacts →

Partial evidence

“AJ Security AJ Security has been delivering successful security services to our clients for over the past years.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceEdmond, OK, United StatesHQ checked Sep 27, 202651-200250 contacts →

Partial evidence

“Orion Security Systems (OSS) provides elite technical, physical, and cyber security solutions for customers with simple to complex needs.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceRancho Cucamonga, CA, United StatesHQ checked Sep 27, 2026201-500234 contacts →

Partial evidence

“Safety and security should always be top priority.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceSingaporeHQ checked Sep 27, 202651-200228 contacts →

Partial evidence

“AVTEL specialise in electronic security systems.”

Source: RevenueBase Database · checked Sep 27, 2026
14Partial evidenceReston, VA, United StatesHQ checked Sep 27, 20261,001-5,000172 contacts →

Partial evidence

“ASP is a premium contract security services company based in Northern Virginia and a wholly owned subsidiary of SecurAmerica.”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceRehovot, IsraelHQ checked Sep 27, 202651-200167 contacts →

Partial evidence

“Citadel is an Information Security Consulting company.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceMemphis, TN, United StatesHQ checked Sep 27, 2026201-500157 contacts →

Indirect evidence

“State Systems is a privately owned total protection company that seeks to embody its mission of protecting life and property into every client and product every day.”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceHammond, LA, United StatesHQ checked Sep 27, 2026n/a156 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceSaint Louis, MO, United StatesHQ checked Sep 27, 202651-200149 contacts →

Partial evidence

“Faith Group LLC was established in 2004 as a full-service women-owned consulting and engineering firm specializing in the planning and design of security, IT, audiovisual, safety…”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceAustin, United StatesHQ checked Sep 27, 2026201-500138 contacts →

Partial evidence

“Priebe Security Services, known and respected for nearly two decades, has been providing personalized, client centric professional security services for most of Austin’s most…”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceLarkspur, CA, United StatesHQ checked Sep 27, 202651-200136 contacts →

Partial evidence

“ZBeta is a world-class strategic physical security design and managed services firm.”

Source: RevenueBase Database · checked Sep 27, 2026
21Partial evidenceAnn Arbor, MI, United StatesHQ checked Sep 27, 2026201-500134 contacts →

Partial evidence

“i2G Systems is an industry leading safety and security technology and professional services firm, specializing in design, engineering, program management, installation…”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceNoida, IndiaHQ checked Sep 27, 202651-200127 contacts →

Indirect evidence

“Founded in 2015 with four passionate individuals, Momentum India has grown into a dynamic team of over 150 multi-disciplinary experts dedicated to creating safer, more secure, and…”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidencePinhais - Alphaville, BrazilHQ checked Sep 27, 202651-200127 contacts →

Indirect evidence

“Inspirar confiança é a meta que guia todas as nossas ações.”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceStockholm, SwedenHQ checked Sep 27, 202651-200123 contacts →

Partial evidence

“Briab offers expertise and services in fire safety, risk management and physical security.”

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceBrisbane Airport, New ZealandHQ checked Sep 27, 2026201-500123 contacts →

Partial evidence

“Optic Security Group is a leading provider of converged security risk management solutions serving the needs of corporate, enterprise, and government clients across Australia and…”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 3,558 building security consultants worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,707 reachable decision-makers.

Free signup · no credit card

View the full list →

Building security consultants worldwide at a glance

As of Sep 27, 2026
21.1%Verified-email coverage
10.3Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
2,184
11-50
956
51-200
267
201-500
76
501-1,000
27
1,001-5,000
28
5,001-10,000
4
10001+
2

Email recency is reported on each country list linked below.

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 security consultants, 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.
Coverage
Every country. Country and city lists for building security consultants are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “building security consultants”. 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 security consultants), 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 security consultants, and records with no verified work email.
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, 7,707 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 27, 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 security consultants by location

17 lists · largest first

Every Building security consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 security consultants, 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 security consultants are there worldwide?

RevenueBase identified 3,558 building security consultants worldwide 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?

Jensen Hughes, headquartered in Columbia, tops this list with the largest team on record.

Which country has the most building security consultants?

The United States leads with 875 companies, followed by the United Kingdom (210) and France (171). Every building security consultants list by country and city is linked on this page.

Which city has the most building security consultants?

London leads with 58 headquartered companies, followed by Sao Paulo (39) and Paris (31).

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 7,707 verified decision-maker contacts tracked across these 3,558 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,558 building security consultants worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.