Company lists · Data refreshed September 2026
Top 25 Security companies based in Houston, United States
This directory lists 184 security companies based in Houston, United States, with 2,111 contacts and 292 email addresses for business research and outreach. As of September 2026, New York is the single most-represented city among the companies on the list.
Security companies provide services, systems, or products that protect people, property, facilities, data, networks, or other assets from security threats. This list covers companies that provide security products or services, including physical security, cybersecurity, monitoring, access control, risk management, and related protection solutions. Ranked by team size, largest first. Data current as of September 6, 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.
The 25 largest security companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 223 | ||||
“5 STAR Event Services is a Licensed Private Security Company that specializes in uniformed guards and specialty event security and staffing in the sports and entertainment…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 128 | ||||
“Bulldog Security Services is a family-owned national ADT Authorized Dealer with over a decade of industry experience.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Protos OFF Duty ServicesIndirect evidence | 121 | |||
“OFF DUTY SERVICES, INC.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 88 | ||||
“Mission Statement “Always Exceed Expectations” ADM Security Solutions exceeds expectations by providing innovative, comprehensive security solutions incorporating high value…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | SentriforceIndirect evidence | 76 | |||
“SentriForce is a leading provider of comprehensive video surveillance solutions for construction sites, residential neighborhoods, apartment communities, retail commercial…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | RAE SecurityStrong evidence | 59 | |||
“RAE Security is a customer centric Security business.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Ranger GuardStrong evidence | 54 | |||
“We provide security guard services to apartment complexes and businesses all over the Houston area.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 45 | ||||
“We provide professional, licensed, and uniformed security guards and vehicle patrol.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 43 | ||||
“The premier security company of Texas where customers come first.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 33 | ||||
“All Campus Security globally offers customized integrated security solutions including video surveillance, door access control, intrusion detection, fire protection, structured…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 30 | ||||
“CalAtlantic is a leader in the security industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 28 | ||||
“Advantage Interests Inc is a Fire Protection, Security and System Integration Company located in Houston,Texas, United States.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Becklar Video Remote GuardingIndirect evidence | 23 | |||
“Becklar Remote Guarding delivers cutting-edge video surveillance solutions, combining AI technology with live operator intervention to proactively prevent crime and protect assets…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 23 | ||||
“City Security Services is a state-licensed security guard service in Houston, TX, and we are committed to protecting both our clients and their interests.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 20 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Avail Security Group, John Mccracken Principal COOStrong evidence | 20 | |||
“Security has become a current-day necessity.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Nationwide Investigations & Security, INCIndirect evidence | 20 | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 19 | ||||
“OMNI Fire and Security was started in 1987 to provide a locally owned option to the "big box" national firms.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | PPI SecurityStrong evidence | 16 | |||
“PPI Security is a company based out of HOUSTON, TEXAS, United States.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 16 | ||||
“International Guard Services provides professional and reliable security officers to multiple industries.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 15 | ||||
“Strategic Protection Solutions is a Texas-based company that specializes in providing peace-of-mind tools and resources to a broad list of industries.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Transnet Communications LLCStrong evidence | 14 | |||
“TRANSNET is a service provider for electronic security solutions as well as an IT expert that provides assessment, designs, installations, monitoring and maintenance to Security &…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 | ||||
“Always Ready to Answer the Call Whether you are the property manager of an apartment complex, shopping mall, or other facilities, you may at some point need the services of a…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 13 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 12 | ||||
“Integrated Security Solutions - Intelligent Video, Access Control, CCTV, Video/Intercom, Mobile & Remote Surveillance, Perimeter Detection, Monitored Security & Alarms, Biometric…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 184 security companies based in Houston, United States
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Security companies based in Houston, United States at a glance
As of Sep 6, 2026Companies by employee count
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 Houston, over 184 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 security companies, 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 Houston, United States whose own description of what they do matches “security companies”. 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 security companies, and records with no verified work email. Companies headquartered outside Houston 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, 292 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 6, 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.
Security companies by metro in the United States
- Security companies in New York224
- Security companies in Los Angeles187
- Security companies in Houston184
- Security companies in Miami154
- Security companies in Chicago102
- Security companies in Atlanta99
- Security companies in Dallas99
- Security companies in Austin84
- Security companies in Phoenix84
- Security companies in Las Vegas67
- Security companies in Orlando66
- Security companies in San Antonio59
- Security companies in Tampa59
- Security companies in Charlotte56
- Security companies in Denver56
- Security companies in San Diego55
- Security companies in Indianapolis46
- Security companies in Sacramento46
- Security companies in San Francisco45
- Security companies in San Jose45
- Security companies in Jacksonville44
- Security companies in Seattle44
- Security companies in Baltimore42
- Security companies in Nashville37
- Security companies in Fort Lauderdale36
- Security companies in Columbus34
- Security companies in Memphis34
- Security companies in Portland34
- Security companies in Washington34
- Security companies in Philadelphia32
- Security companies in Raleigh32
- Security companies in Columbia31
- Security companies in Fort Worth31
- Security companies in Cincinnati30
- Security companies in Brooklyn29
- Security companies in Louisville28
- Security companies in Wilmington28
- Security companies in Albuquerque26
- Security companies in Richmond26
- Security companies in Riverside26
- Security companies in Springfield26
- Security companies in Boca Raton25
- Security companies in Boston25
- Security companies in Colorado Springs25
- Security companies in Irvine25
Frequently asked
How many security companies are based in Houston, United States?
RevenueBase counts 184 security companies based in Houston, United States on this list.
How many contacts and email addresses are available for security companies?
The list includes 2,111 contacts and 292 email addresses for security companies.
Which city has the most security companies on the list?
New York is the single most-represented city among the companies on the list.
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Security companies by geography
- Security companies based in the United States
- Security companies based in the United Kingdom
- Security companies based in Brazil
- Security companies based in France
- Security companies based in Canada
- Security companies based in Germany
- Security companies based in Italy
- Security companies based in Australia
- Security companies based in the Netherlands
- Security companies based in Mexico
- Security companies based in South Africa
- Security companies based in Spain
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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.