Company lists · Data refreshed September 2026

Top 25 Building security companies based in Australia

Name: Building security companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 430 companies tracked

RevenueBase identified 430 building security companies headquartered in Australia as of September 2026 and tracks 3,697 professional contacts across them, including 735 with verified work emails. Melbourne is the largest hub.

This list covers building security companies headquartered in Australia, 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.

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

430Companies

3,697Contacts tracked

735Verified emails

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The 25 largest building security companies based in Australia

Ranked by team size

Top 25 of 430 building security companies based in Australia, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to building security companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SNP Security	Partial evidence	West Ryde, AustraliaHQ checked Sep 27, 2026	1,001-5,000	510 contacts →
	Partial evidence “Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Source: RevenueBase Database · checked Sep 27, 2026
2	Securitas Australia	Partial evidence	Preston, AustraliaHQ checked Sep 27, 2026	10001+	228 contacts →
	Partial evidence “We know how to offer the most effective security to our customers.” Source: RevenueBase Database · checked Sep 27, 2026
3	ADT Security Australia	Indirect evidence	Rydalmere, AustraliaHQ checked Sep 27, 2026	501-1,000	178 contacts →
	Indirect evidence “For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Source: RevenueBase Database · checked Sep 27, 2026
4	National Protective Services	Partial evidence	South Melbourne, AustraliaHQ checked Sep 27, 2026	1,001-5,000	82 contacts →
	Partial evidence “National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…” Source: RevenueBase Database · checked Sep 27, 2026
5	AG Security Group	Partial evidence	Adelaide, AustraliaHQ checked Sep 27, 2026	51-200	74 contacts →
	Partial evidence “AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.” Source: RevenueBase Database · checked Sep 27, 2026
6	Constant	Partial evidence	Parramatta, AustraliaHQ checked Sep 27, 2026	501-1,000	67 contacts →
	Partial evidence “Constant, a wholly owned Australian company, was established in 2003 providing peace of mind for our clients to get on with what is important for them, by securing their valuable…” Source: RevenueBase Database · checked Sep 27, 2026
7	CPS Security Services	Partial evidence	Epping, AustraliaHQ checked Sep 27, 2026	51-200	65 contacts →
	Partial evidence “We are CPS Security Services, a 100% Australian-owned and operated company founded in 2006.” Source: RevenueBase Database · checked Sep 27, 2026
8	Exec Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 27, 2026	501-1,000	59 contacts →
	Partial evidence “Guarding Solutions \| Armed Guards \| 24/7 Grade A1 Monitoring \| Mobile Patrols \| Electronics \| Advisory EXEC Security is an Australian owned, national company that specialises in…” Source: RevenueBase Database · checked Sep 27, 2026
9	Best Security PTY LTD	Partial evidence	Clayfield, AustraliaHQ checked Sep 27, 2026	201-500	41 contacts →
	Partial evidence “Security Company in Brisbane” Source: RevenueBase Database · checked Sep 27, 2026
10	Idetect Group	Partial evidence	Melbourne, AustraliaHQ checked Sep 27, 2026	51-200	34 contacts →
	Partial evidence “iDetect is proudly Australian owned and operated with a focus on supporting the needs of the building and construction industries throughout Australia.” Source: RevenueBase Database · checked Sep 27, 2026
11	Security1 S1	Partial evidence	Phillip, AustraliaHQ checked Sep 27, 2026	51-200	33 contacts →
	Partial evidence “Security 1 was established as a separate entity in 2001 as the electronic and manpower section of the Newham group which has operated one of the nations leading Locksmith company…” Source: RevenueBase Database · checked Sep 27, 2026
12	KGB Security	Partial evidence	Coopers Plains, AustraliaHQ checked Sep 27, 2026	11-50	33 contacts →
	Partial evidence “For nearly four decades, KGB Security has been a trusted leader in electronic and physical security solutions across Australia.” Source: RevenueBase Database · checked Sep 27, 2026
13	Oscar Security Group PTY LTD	Partial evidence	Chipping Norton, AustraliaHQ checked Sep 27, 2026	51-200	28 contacts →
	Partial evidence “Welcome to Oscar Security Group - Your Safety, Our Top Priority We pride ourselves on our people-centric approach, we set the standard for the customer experience by taking…” Source: RevenueBase Database · checked Sep 27, 2026
14	Eclipse Security Systems	Partial evidence	Hallam, AustraliaHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “Eclipse Security Systems has been providing Business and Commercial Security Solutions throughout Melboune since Over the years Eclipse Security Systems has led with the changes…” Source: RevenueBase Database · checked Sep 27, 2026
15	Group 1 Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 27, 2026	201-500	25 contacts →
	Indirect evidence “FreeCall 1800 GROUP 1.” Source: RevenueBase Database · checked Sep 27, 2026
16	Crown Security	Partial evidence	Perth, AustraliaHQ checked Sep 27, 2026	11-50	23 contacts →
	Partial evidence “Based in Joondalup (Perth, WA), at Crown Security we specialise in commercial electronic security, video surveillance, automation, smart parking solution and integration solutions.” Source: RevenueBase Database · checked Sep 27, 2026
17	Total Security Systems	Partial evidence	Canning Vale, AustraliaHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Total Security Systems is a West Australian owned company, operating for over 10 years.” Source: RevenueBase Database · checked Sep 27, 2026
18	AMA Security	Partial evidence	Adelaide, AustraliaHQ checked Sep 27, 2026	51-200	21 contacts →
	Partial evidence “AMA Security is a provider of strategically tailored security solutions for commercial, business & industry, Government and Defence clients.” Source: RevenueBase Database · checked Sep 27, 2026
19	Smokeshield Security	Partial evidence	Springvale, AustraliaHQ checked Sep 27, 2026	11-50	20 contacts →
	Partial evidence “Smokeshield Security – Protecting People, Premises & Profits for 40 Years Smokeshield Security is Australia’s market leader in advanced security solutions for commercial &…” Source: RevenueBase Database · checked Sep 27, 2026
20	Advanced Security Group	Partial evidence	Tamworth, AustraliaHQ checked Sep 27, 2026	11-50	19 contacts →
	Partial evidence “Advanced Security Group (ASG) Protecting What Is Yours At Advanced Security Group, we pride ourselves on being a trusted partner in safeguarding homes, businesses, and communities…” Source: RevenueBase Database · checked Sep 27, 2026
21	Guardtech	Partial evidence	Keilor Park, AustraliaHQ checked Sep 27, 2026	11-50	17 contacts →
	Partial evidence “Guardtech is a privately owned Australian security company established in 2016.” Source: RevenueBase Database · checked Sep 27, 2026
22	Secure People	Partial evidence	Bella Vista, AustraliaHQ checked Sep 27, 2026	11-50	15 contacts →
	Partial evidence “Secure People is a national leader in the Australian electronic security industry, supported by a highly skilled team of expert management and technical professionals.” Source: RevenueBase Database · checked Sep 27, 2026
23	Safer Community Security	Partial evidence	West Perth, AustraliaHQ checked Sep 27, 2026	51-200	14 contacts →
	Partial evidence “Full suite of security services.” Source: RevenueBase Database · checked Sep 27, 2026
24	Castle Security	Partial evidence	Malaga, AustraliaHQ checked Sep 27, 2026	11-50	14 contacts →
	Partial evidence “With clients in the Commercial, Government industrial, and residential marketplace, Australia-wide, Castle Security has the experience and knowledge to help find a solution for…” Source: RevenueBase Database · checked Sep 27, 2026
25	Excell Security	Partial evidence	Altona North, AustraliaHQ checked Sep 27, 2026	51-200	14 contacts →
	Partial evidence “Excell Security is Melbourne's "one stop shop" for security, specialising in CCTV, alarms, monitoring and access control products and services, plus mobile patrols, security…” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: building security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names building security companies.
Partial evidence: Its own public description names part of building security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 430 building security companies based in Australia

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Building security companies based in Australia at a glance

As of Sep 27, 2026

19.9%Verified-email coverage

8.6Average contacts per company

11-50Median size (employees)

8.8%Largest-city concentration · Melbourne

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

181

11-50

144

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 430 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 building security companies, 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.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “building security companies”. 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 companies), 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 companies, and records with no verified work email. Companies headquartered outside Australia 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 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, 735 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.

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 companies, 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 companies are there based in Australia?

RevenueBase identified 430 building security companies headquartered in Australia 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?

SNP Security, headquartered in West Ryde, tops this list with the largest team on record.

Which city has the most building security companies?

Melbourne leads with 38 headquartered companies, followed by Sydney (36) and Brisbane (18).

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 735 verified decision-maker contacts tracked across these 430 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.

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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.