When Mark Kostiw founded Square Security Inc. over a decade ago, the goal was straightforward: provide Toronto businesses with high-quality security solutions delivered through a streamlined, efficient installation process. Today, Square supports commercial clients across Ontario with customized system designs tailored to their operational needs, installed by a seasoned and highly skilled team.
Square Security installed a card access system for our office, covering both the perimeter doors and the server room. The entire project was completed to a high standard, on time,… read more
Square provided very high levels of quality at a very reasonable price. The equipment was installed with near military precision and before we knew it, we had a state… read more
Excellent service with a smooth installation process. Their 3-year warranty gives us peace of mind. Highly recommend for their security solutions! Really helpful! 
We design and install security systems for organizations of every size—from small local businesses to complex, multi-site enterprise deployments for some of Canada’s largest companies.
We serve Toronto and Southern Ontario, including:
