Physical & Electronic
Security Services
Across Sydney
From licensed security guards and mobile patrols to CCTV, alarms, intercoms and access control — Sentinel Security Service protects commercial properties, construction sites, events and businesses across Sydney and NSW.
Trusted Across Every Sector
We tailor physical and electronic security solutions to the specific risks and compliance requirements of each industry we protect across Sydney and NSW.
Commercial Property
Office towers, retail centres and corporate premises protected by trained guards, access control and monitored CCTV.
Construction & Building Sites
Active building sites secured against theft, vandalism and trespassing with patrols, lock-ups and site guarding.
Retail & Shopping Centres
Loss prevention, crowd management and visible deterrence for retail stores, arcades and shopping centres.
Body Corporate & Residential
Residential complexes, apartment buildings and strata sites covered by patrols, intercoms and access control.
Healthcare & Aged Care
Sensitive, professional security for hospitals, clinics and aged-care facilities with vetted, trained personnel.
Government & Education
Trusted security for government facilities, schools and universities operating to strict compliance standards.
Comprehensive Security Services
We deliver tailored security solutions for commercial businesses, construction sites, events and residential properties.
Master Security Licences
Sentinel Security Service holds master security licences across multiple states, so your site is always covered by properly licensed personnel.
Mobile Security Patrols Across Sydney
Our marked Sentinel patrol vehicles provide a highly visible, mobile security presence across Greater Sydney. Regular patrols and rapid alarm response deliver dependable protection for commercial premises, construction sites and vacant properties — a cost-effective alternative to a continuous static guard presence.
- Scheduled & random patrol routes
- Rapid alarm response across Sydney
- Lock-up & unlock services
- Detailed patrol & incident reports
Need urgent patrol cover? Call us on 1300 949 994.
Advanced Electronic Security Solutions
Combine Sentinel's physical security expertise with modern technology — CCTV, alarms, intercoms and access control working together to protect your property.
Serving Sydney & Surrounding Areas
Operating from our Seven Hills office in New South Wales, we deliver security services across Greater Sydney and surrounding regions.
Security You Can Depend On
At Sentinel Security Service, we combine professional personnel, modern security technology and proactive protection strategies to deliver dependable security solutions.
24/7 Availability
Round-the-clock security services ensuring your property is protected at all times, day and night.
Trained Professionals
All personnel are highly trained, licensed and experienced in delivering exceptional security services.
Tailored Solutions
Custom security strategies designed around your unique requirements, budget and risk profile.
Rapid Response
Quick alarm response and incident management, minimising risk and ensuring swift resolution.
Dependable Security, Built on Trust
We focus on the fundamentals that matter to the businesses, property managers and site operators we work with across Sydney — professional personnel, transparent reporting and a security partner you can rely on.
NSW Licensed
Sentinel Security Service operates under NSW Master Security Licence M/L 000109204, with all guards holding current NSW security licences.
Fully Insured
Comprehensive public liability and professional indemnity cover, with certificates available on request before any engagement begins.
24/7 Operations
Security operations run around the clock, every day of the year — including overnight coverage, weekend patrols and emergency alarm response.
Detailed Reporting
Clear, written incident and patrol reporting after every attendance, so you have a dependable record of your site's security activity.
Want to hear from clients we've worked with? Ask us for references relevant to your industry and site.
A Structured Security Process
Every engagement follows a clear, proven methodology — so your security is deliberate, documented and dependable from day one.
Assess
We start with a thorough site risk assessment to identify vulnerabilities, threats and your specific operational requirements.
Design
A tailored security plan is designed around your site, budget and risk profile — combining the right personnel, patrols and technology.
Deploy
Licensed, vetted personnel and proven security technology are deployed to your site with clear procedures and accountability.
Monitor & Report
Ongoing oversight, incident response and clear written reporting keep your site protected and you fully informed at every step.
Frequently Asked Questions
Everything you need to know about our services, licensing and availability.
Still have questions? Get in touch with our team — we're happy to help.
