Security Guard Services in Markham, Ontario

Protecting Markham Around the Clock

Xtreme Security Inc. serves Markham and York Region from our national network of 4,800 full-time security professionals, with access to 17,000 hired guards across Canada. As a privately-owned Canadian company operating in every province, every local assignment is backed by our 24/7 National Security Operations Centre, 270+ marked mobile patrol units and 40+ regional offices.

Markham's technology corridor and corporate head offices demand security with a professional, corporate polish. We provide concierge-style front-desk officers, access control, visitor management and executive floor protection for tech campuses and headquarters — officers who represent your brand as well as they protect it.

The city's commercial and industrial parks, along with retail centres like Markville, need reliable everyday coverage. Our uniformed guards and mobile patrols handle overnight property checks, alarm response and parking enforcement across commercial portfolios.

Construction — from office builds to high-density residential — rounds out our work. Gate guards, material protection and fire watch coverage, every shift documented with GPS-verified checklists and live photos.

When you hire Xtreme Security in Markham, you get corporate-grade, documented protection. Call 1-800-730-3712 or request a quote online for a free risk assessment of your Markham property.