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
Mark, and his TEAM are knowledgeable, listen and understand what your needs are. They were on time, finished the job on schedule and went the extra mile to ensure that… read more
Worked as expected. Get static of neighbors on system friendly user . Best intercom service in toronto .workers are very professional and friendly. I definitely recommend .. 
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:
