At CSL Doors & Security, we design and install professional systems that protect people, property, and operations. Our team works closely with business owners, property managers, and contractors to deliver reliable, code-compliant installations built for real-world commercial environments.
Our services include commercial camera systems for monitoring and documentation, access control systems that manage and track entry, and alarm systems that help protect facilities during and after business hours. Each system is designed to integrate seamlessly, giving you clear visibility, controlled access, and dependable security across your operation.
We also provide cabling infrastructure to support security, access control, and network connectivity. From new construction to system upgrades, CSL Doors & Security delivers clean, organized cabling that ensures long-term performance and supports the technology your business relies on every day.
Design and installation of professional surveillance systems that provide clear visibility, remote access, and reliable monitoring for commercial properties. Our camera systems help deter theft, improve safety, and support operational oversight.
We install access control systems that give you control over who enters your building and when. Our solutions replace traditional keys with secure, trackable access for commercial environments.
We provide commercial alarm systems designed to detect unauthorized entry and trigger fast alerts. These systems add an essential layer of protection for your facility, equipment, or inventory.
We install and service commercial-grade doors built for security, durability, and code compliance. Our door solutions support offices, warehouses, retail spaces, and multi-tenant properties.
We offer professional rekeying services that allow you to change access without replacing your existing hardware. Rekeying is a cost-effective solution for tenant changes, employee turnover, and security updates.
We supply, install, and service commercial locks designed for high-traffic and high-security environments. Our locking solutions are selected to meet the demands of your facility.
We install structured low-voltage cabling to support security systems, access control, and network connectivity. Our cabling work is clean, organized, and built for long-term performance.
We diagnose and repair commercial security systems, including cameras, access control, alarms, and cabling. Our team works quickly to restore system reliability and minimize downtime.
We have a satisfaction guarantee, which means you can try us risk free.
We 100% stand behind our work and product.
If you are not completely satisfied with the outcome, we will make it right at no additional cost to you.
Besides commercial security services, we also offer locksmith services and door installation or repair.
We've been serving St Louis businesses since 1995 and are locally owned & operated.
If you are locked out or cannot close up your business, someone from CSL Doors & Security will always answer your call.
We will always deliver you the best solutions with no surprises on timeline or budget.
