Company lists · Data refreshed September 2026

Top 25 Residential security system installers worldwide

RevenueBase identified 11,352 residential security system installers worldwide as of September 2026 and tracks 105,472 professional contacts across them, including 18,624 with verified work emails. The United States is the largest market and London the largest hub.

This list covers residential security system installers 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 29, 2026. Country and city lists for residential security system installers 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 29, 2026 86% judged on-target in blind review
11,352Companies
105,472Contacts tracked
18,624Verified emails
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The 25 largest residential security system installers worldwide

Ranked by team size
Top 25 of 11,352 residential security system installers worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to residential security system installers: 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
1Partial evidenceBoca Raton, FL, United StatesHQ checked Sep 29, 2026n/a20,475 contacts →

Partial evidence

“ADT is the most trusted name in smart home security, helping protect and connect what matters most at home and beyond.”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceIstanbul, TürkiyeHQ checked Sep 29, 20261,001-5,0002,126 contacts →

Strong evidence

“Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceNorth Kansas City, MO, United StatesHQ checked Sep 29, 20261,001-5,0001,276 contacts →

Partial evidence

“Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceWest Palm Beach, FL, United StatesHQ checked Sep 29, 2026501-1,000849 contacts →

Strong evidence

“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceCharlotte, NC, United StatesHQ checked Sep 29, 2026501-1,000763 contacts →

Partial evidence

“For more than 30 years, CPI Security has been a leader in customized home and business security and home automation services.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceMississauga, ON, CanadaHQ checked Sep 29, 20261,001-5,000759 contacts →

Partial evidence

“Chubb provides an unparalleled portfolio of security and life safety solutions to Canadian institutions, businesses and residences.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceWarrendale, PA, United StatesHQ checked Sep 29, 2026501-1,000677 contacts →

Partial evidence

“Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceSpainHQ checked Sep 29, 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 29, 2026
9Partial evidenceTulsa, TX, United StatesHQ checked Sep 29, 2026501-1,000572 contacts →

Partial evidence

“Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceZollikofen, SwitzerlandHQ checked Sep 29, 2026501-1,000542 contacts →

Strong evidence

“Securiton AG has been a leading manufacturer and installer of alarm and security systems since 1948 and is part of the Swiss Securitas Group.”

Source: RevenueBase Database · checked Sep 29, 2026
11Strong evidenceKingston 5, JamaicaHQ checked Sep 29, 20261,001-5,000542 contacts →

Strong evidence

“KingAlarm Systems began operations in March and, in a relatively short time, has become the largest Electronic Security Company not just in Jamaica but the entire Caribbean…”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceBrazilHQ checked Sep 29, 2026n/a446 contacts →

Indirect evidence

“A Inviolável atua no mercado há mais de 25 anos.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceLehi, UT, United StatesHQ checked Sep 29, 2026501-1,000444 contacts →

Indirect evidence

“When you partner with SafeStreets, you’re joining forces with America’s #1 choice for helping them protect the things they value most.”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceBlackburn, United KingdomHQ checked Sep 29, 2026n/a393 contacts →

Strong evidence

“At Global Security Ltd, we are proud to be one of the UK’s trusted suppliers of CCTV, intruder alarms, access control, and fire safety systems.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceSouthfield, MI, United StatesHQ checked Sep 29, 2026501-1,000389 contacts →

Partial evidence

“Guardian Alarm is one of the largest independently-owned security companies protecting both homes and businesses throughout the Midwest.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceBradford, United KingdomHQ checked Sep 29, 2026501-1,000326 contacts →

Partial evidence

“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceNashville, TN, United StatesHQ checked Sep 29, 2026201-500324 contacts →

Partial evidence

“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceSantos, BrazilHQ checked Sep 29, 20261,001-5,000321 contacts →

Indirect evidence

“A empresa oferece profissionais qualificados para diversas funções, entre elas, portaria e/ou controlador de acesso, auxiliar de serviços gerais, zeladoria, atendente, auxiliar…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceSyosset, NY, United StatesHQ checked Sep 29, 2026201-500302 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
20Strong evidenceProvidence, RI, United StatesHQ checked Sep 29, 2026201-500288 contacts →

Strong evidence

“Alliance Security is an award-winning, industry leader in both home security and smart home technology, offering customers the most advanced, professionally installed technologies…”

Source: RevenueBase Database · checked Sep 29, 2026
21Strong evidenceOrange, CA, United StatesHQ checked Sep 29, 202651-200232 contacts →

Strong evidence

“One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceAurora, IL, United StatesHQ checked Sep 29, 2026201-500225 contacts →

Partial evidence

“Family owned and operated since 1968, Alarm Detection Systems, Inc.(ADS) understands that nothing is more important than the safety of your family and the protection of your…”

Source: RevenueBase Database · checked Sep 29, 2026
23Strong evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-200220 contacts →

Strong evidence

“Guardian Security Systems is the leader in residential and commercial life safety solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
24Strong evidenceNoida, IndiaHQ checked Sep 29, 2026201-500210 contacts →

Strong evidence

“A’nG INDIA specializes in Security surveillance, Fire Detection and CCTV products with system design and custom engineering being a major strength.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 2026201-500206 contacts →

Partial evidence

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 11,352 residential security system installers worldwide

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Residential security system installers worldwide at a glance

As of Sep 29, 2026
17.7%Verified-email coverage
9.3Average contacts per company
1-10Median size (employees)
1.2%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
6,664
11-50
3,534
51-200
792
201-500
137
501-1,000
44
1,001-5,000
33
5,001-10,000
6
10001+
11

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 residential security system installers, 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 residential security system installers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “residential security system installers”. 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 residential security system installers), 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 residential security system installers, 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, 18,624 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 29, 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.

Residential security system installers by location

30 lists · largest first

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

Countries

Cities

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 residential security system installers, 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 residential security system installers are there worldwide?

RevenueBase identified 11,352 residential security system installers 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?

ADT, headquartered in Boca Raton, tops this list with the largest team on record.

Which country has the most residential security system installers?

The United States leads with 2,660 companies, followed by the United Kingdom (1,276) and Brazil (763). Every residential security system installers list by country and city is linked on this page.

Which city has the most residential security system installers?

London leads with 132 headquartered companies, followed by Sao Paulo (128) and Houston (49).

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 18,624 verified decision-maker contacts tracked across these 11,352 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 29, 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.