(408) 745-1111

Welcome to Guardsline Security Inc

Guardsline Security Inc, provides fully qualified contract security guard services to corporations, commercial properties, residential areas, Government buildings, and industrial complexes including hospitals and banks in the San Francisco Bay Area and in the Silicon Valley. GSI is fully insured and licensed by State, and Local Governments. We have the experience as well as the credentials to service sites of all types.

Our Mission

Here at Guardsline Security Inc, we understand the importance of keeping your company safe and secure. That’s why we work hard to provide high-quality service and protect your property. Guardsline Security is dedicated to servicing big and small businesses across Silicon Valley with our expertly trained guards. We are here to serve our community!

Private Security Services

Commercial – Industrial – Residential


Guardsline Security Inc, is best known for its On-site Guard Service. Our Security officer make foot patrols every 30 to 40 minutes, stopping at checkpoints and detailing any suspicious activity. Our guards work hard to effectively prevent vandalism, unlawful entry, and theft.


Our patrolling officer will make sure the building is totally secure by checking doors, windows, gates, and alarm panels, and looking for signs of break-ins or chemical spills. Every check-up or inspection of the building will be recorded on a Daily Activity Report (DAR) which will be provided by the officer at the end of the shift.

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   Contact us any time at (408)745-1111