Contact Details


Level 7, 109 Pitt St
Sydney NSW 2000
+61 2 9699 9999

ABN  27159679339

Company Profile

GSTHREE is a national provider of security, cleaning, and labour hire solutions. As we are a multi-skilled organisation, we have the ability to integrate multiple services into one package offering a greater cost-saving to our clients whilst ensuring all operational components are adhered to and monitored through our online portal GS-Live. Further to this, we have an innovative app based platform which provides our clients access to all staffing information, site protocols, and other documentation. This system can be tailored to include client requisites and has the ability to further evolve in accordance to client requirements. We have worked on numerous government projects including rail, transport, construction and for major petrochemical clients. We are currently on one of the largest government transport projects in Australia.

Products and Services

Security Division:
Static Guarding
Crowd Control
Mobile Patrols
CPP Services
Concierge Services
Retail Shopping Centres
Commercial/Industrial Warehouses
Construction/Rail Site Protection
Electronic Surveillance Systems & Access Control
CCTV Installation
Security Training and Development
Cleaning Division:
Retail Shopping Centres
Commercial/Industrial Warehouses
Construction/Rail Sites
Office Buildings
Labour Hire
Specialising in Petrochemical & Metal Fab Services
Pipe Fitters


ASIAL Member
Supply Chain Sustainability School Member
ISO 9001:2015 Quality Management System
ISO14001:2015 Environmental Management Systems
AS/NZS 4801:2001 Occupational Health & Safety Management Systems