Commercial Security Systems in Denver

The Facilities We Secure in Denver

ESI installs and services commercial security across Denver’s full range of facility types: office and multi-tenant buildings, healthcare and clinical facilities, state, city, and county government buildings, distribution and warehouse operations, manufacturing and industrial sites, retail, and education.

Denver’s mix of downtown towers, medical campuses, government facilities, and distribution corridors means most buildings need more than one system tied together, which is the work we do. Whether the site is a healthcare campus, a government building, or a manufacturing or distribution facility, we design around the building rather than a fixed template. For a deeper look at how the pieces fit together, see our guide to commercial access control systems in Colorado.

ESI’s History and Credentials

ESI has installed and serviced commercial security systems in Colorado since 1984. We dispatch our own technicians to the Denver metro from our Colorado Springs office and keep a documented service history on the systems we maintain, including systems other integrators installed.

We hold manufacturer authorizations from Axis, Avigilon, Hanwha, Genetec, Gallagher, Salto, and AMAG, and we carry CJIS compliance for government and law-enforcement work. Our team includes a state-licensed Master Electrician, licensed through Colorado DORA, and our fire alarm and low-voltage work is performed by NICET-certified technicians. We hold preferred vendor agreements with three Colorado municipalities and offer cooperative purchasing through OMNIA Partners.

Why a Local Integrator Matters for Service in Denver

A security system is only as good as the response behind it. When a camera stops recording or an access control server drops offline, the longest part of the outage is usually the wait for a qualified technician, not the repair. A Denver-based subcontractor arrangement or a national call center adds a handoff to every service call.

We dispatch our own technicians to the Denver metro from Colorado Springs, keep a documented service history on your systems, and can service equipment other integrators installed. For a facility running on a break-fix model, that response gap is where most of the real cost sits. Our service agreements replace it with scheduled inspection and priority response, and our commercial security system maintenance guide walks through what scheduled service should cover.

Frequently asked questions

Does ESI have a Denver office?

ESI serves the Denver metro from its Colorado Springs office, which covers Denver and the surrounding cities. Denver projects get a dispatched ESI technician and a documented service record, not a subcontractor. Our Fort Collins office covers Northern Colorado.

What kinds of Denver facilities does ESI work with?

Office and multi-tenant buildings, healthcare and clinical facilities, government buildings, distribution and warehouse operations, manufacturing sites, retail, and education. We are a commercial integrator and do not do residential alarm work.

Can ESI service a system another company installed?

Yes. We service and maintain access control, video, intrusion, and fire alarm systems installed by other integrators, and we can put a system that has been running on break-fix onto a scheduled maintenance agreement. A site walk first tells us what you have and what it needs.

What access control and camera brands does ESI install in Denver?

For access control, Genetec, Gallagher, AMAG, and Salto. For video, cameras from Axis, Avigilon, Hanwha, and i-PRO recorded on Milestone, Genetec, or Avigilon. We are authorized on these platforms, which is what gives you manufacturer support, warranty coverage, and current firmware over the life of the system.