Company lists · Data refreshed September 2026

Top 24 Security companies for buildings based in Australia

Name: Security companies for buildings based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 511 companies tracked

RevenueBase identified 511 security companies for buildings headquartered in Australia as of September 2026 and tracks 7,800 professional contacts across them, including 1,557 with verified work emails and 329 with mobile numbers. Sydney is the largest hub.

This list covers security companies for buildings 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, how directly it supports the match, and when it was last checked. Data refreshed 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

511Companies

7,800Contacts tracked

1,557Verified emails

329Mobile numbers

Explore all 511 companies → Free signup · no credit card · 500 free credits

The 24 largest security companies for buildings based in Australia

Ranked by team size

Top 24 of 511 security companies for buildings based in Australia, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security companies for buildings: 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	Wilson SecurityStrong evidence	Essendon Fields, AustraliaHQ checked Sep 6, 2026	5,001-10,000	1,813
	“At Wilson Security, we are committed to building a safer future for everyone.” Source: company website · checked Sep 6, 2026
2	SecurecorpIndirect evidence	Mulgrave, AustraliaHQ checked Sep 6, 2026	1,001-5,000	630
	“Securecorp employ more than 2,500 staff across Australia and have an annual turnover in excess of $100 million.” Source: company website · checked Sep 6, 2026
3	SNP SecurityPartial evidence	West Ryde, AustraliaHQ checked Sep 6, 2026	1,001-5,000	510
	“Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Source: company website · checked Sep 6, 2026
4	MA Services GroupIndirect evidence	Keilor Park, AustraliaHQ checked Sep 6, 2026	5,001-10,000	274
	“MA Services Group is a 100% Australian owned company, founded with the vision of providing high performance, customer centric services in a safe and fair environment.” Source: company website · checked Sep 6, 2026
5	Securitas AustraliaPartial evidence	Preston, AustraliaHQ checked Sep 6, 2026	10001+	228
	“We know how to offer the most effective security to our customers.” Source: company website · checked Sep 6, 2026
6	ADT Security AustraliaIndirect evidence	Rydalmere, AustraliaHQ checked Sep 6, 2026	501-1,000	178
	“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Source: company website · checked Sep 6, 2026
7	Southern Cross Group ServicesIndirect evidence	Wetherill Park, AustraliaHQ checked Sep 6, 2026	1,001-5,000	96
	“A wholly owned Australian company, Southern Cross Group Services is one of the country’s leading integrated facility service solutions providers.” Source: company website · checked Sep 6, 2026
8	ISECPartial evidence	Alexandria, AustraliaHQ checked Sep 6, 2026	201-500	87
	“Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Source: company website · checked Sep 6, 2026
9	National Protective ServicesPartial evidence	South Melbourne, AustraliaHQ checked Sep 6, 2026	1,001-5,000	82
	“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: company website · checked Sep 6, 2026
10	Infront Security ServicesPartial evidence	Brisbane, AustraliaHQ checked Sep 6, 2026	201-500	82
	“Infront Security Services was established in 2002 to provide a fresh alternative to the Qld security marketplace, focussing predominately on event management and crowd control…” Source: company website · checked Sep 6, 2026
11	AG Security GroupPartial evidence	Adelaide, AustraliaHQ checked Sep 6, 2026	51-200	74
	“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: company website · checked Sep 6, 2026
12	Signal SecurityPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	11-50	69
	“Australia's Multisite Security Specialist.” Source: company website · checked Sep 6, 2026
13	Seme SolutionsPartial evidence	Perth, AustraliaHQ checked Sep 6, 2026	51-200	67
	“SEME Solutions have been one of Australia’s leading provider of security solutions for over 50 years, specialising in the integration of CCTV, Access Control, Intruder Detection…” Source: company website · checked Sep 6, 2026
14	ConstantPartial evidence	Parramatta, AustraliaHQ checked Sep 6, 2026	501-1,000	67
	“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: company website · checked Sep 6, 2026
15	Commander Security ServicesPartial evidence	Sydney, AustraliaHQ checked Sep 6, 2026	n/a	66
	“Commander Security Services is an Australian owned and operated company that has been created, and its foundations built on over 25 years’ experience in the security industry.” Source: company website · checked Sep 6, 2026
16	CPS Security ServicesPartial evidence	Epping, AustraliaHQ checked Sep 6, 2026	51-200	65
	“We are CPS Security Services, a 100% Australian-owned and operated company founded in 2006.” Source: company website · checked Sep 6, 2026
17	Monjon AustraliaPartial evidence	Cheltenham, AustraliaHQ checked Sep 6, 2026	201-500	64
	“Monjon (Australia) Pty Ltd (Monjon) is a family owned business with over two decades of experience in the provision of security risk management solutions for residential…” Source: company website · checked Sep 6, 2026
18	Exec SecurityPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	501-1,000	59
	“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: company website · checked Sep 6, 2026
19	Guardian Venue Management InternationalPartial evidence	Sydney, AustraliaHQ checked Sep 6, 2026	201-500	53
	“Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Source: company website · checked Sep 6, 2026
20	Premium SolutionsPartial evidence	Woollahra, AustraliaHQ checked Sep 6, 2026	51-200	52
	“Combining the very best personnel, processes and technology, Premium Solutions will redefine your expectations of the security industry.” Source: company website · checked Sep 6, 2026
21	Vault Protective Security ServicesPartial evidence	Subiaco, AustraliaHQ checked Sep 6, 2026	201-500	42
	“Founded in 2011, Vault Protective Security Services is a Perth based company and leading provider of crowd control and security services.” Source: company website · checked Sep 6, 2026
22	Best Security PTY LTDPartial evidence	Clayfield, AustraliaHQ checked Sep 6, 2026	201-500	41
	“Security Company in Brisbane” Source: company website · checked Sep 6, 2026
23	Lima ONE Protection GroupPartial evidence	Adelaide, AustraliaHQ checked Sep 6, 2026	201-500	38
	“There are numerous factors that contribute to Lima One excelling in the security industry, we believe our attitude and approach to our clients and the professionalism of our hands…” Source: company website · checked Sep 6, 2026
24	Idetect GroupPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	34
	“iDetect is proudly Australian owned and operated with a focus on supporting the needs of the building and construction industries throughout Australia.” Source: company website · checked Sep 6, 2026

Showing 24 of 511 security companies for buildings based in Australia

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Security companies for buildings based in Australia at a glance

As of Sep 6, 2026

11-50Median size (employees)

SydneyLargest hub · 45 HQs

329Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

162

11-50

171

51-200

116

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

1,433

31–60

121

61–90

90–180

180+

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 for buildings, 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 Australia whose own description of what they do matches “security companies for buildings”. 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 for buildings, 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 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, 1,557 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 for buildings by metro

Security companies for buildings in Sydney45
Security companies for buildings in Melbourne42

Frequently asked

How many security companies for buildings are there based in Australia?

RevenueBase identified 511 security companies for buildings 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?

Wilson Security, headquartered in Essendon Fields, tops this list with the largest team on record.

Which city has the most security companies for buildings?

Sydney leads with 45 headquartered companies, followed by Melbourne (42) and Brisbane (21).

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 1,557 verified decision-maker contacts tracked across these 511 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 6, 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.