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14 Best Security System Installers in Denver

Denver homeowners and businesses can find installers for new alarms, whole-home cameras, access control, connected automation, and difficult system upgrades. The right choice depends on whether you are starting from scratch or fixing an existing setup.

Compare the exact equipment involved, the installer’s troubleshooting range, and how clearly the work is explained. Ask about diagnosis, maintenance, wiring, cleanup, and booking lead time before agreeing to an appointment.

How this guide is ordered

Research came first: we studied security system installers across Denver and held on to the businesses that specialize most, that customers review best and that give complete details.

Certain businesses pay to appear in more visible positions.

Top 3Full listMapHow to choose

Compare 14 local options

SafeStreets Home Security Denver#1
What stands out
  • Tailored ADT-monitored installations

SafeStreets Home Security Denver

4.91,444 reviews
Best for
Home alarm installationsCamera and automation upgrades

SafeStreets Home Security Denver designs and professionally installs ADT-monitored security systems for Colorado homes. Solutions can include alarms, cameras, smoke alarms, video surveillance and home automation, with packages tailored to the household rather than treated as a one-size-fits-all setup.

The installation process stands out for patient explanations, careful wiring and attention to keeping the home clean while work is underway. Technicians take time to demonstrate equipment and confirm that the system is functioning properly, making SafeStreets a useful option for homeowners who want guided setup instead of a DIY project.

Security Central Inc., Denver#2
What stands out
  • Practical alarm system modifications

Security Central Inc.

4.9836 reviews
67 Inverness Dr E Unit b, Englewood, CO 80112, United States
Best for
Existing alarm upgradesMobile-control integration

Security Central Inc. installs, modifies and services security and alarm systems in Denver, including upgrades that connect existing equipment with newer automation or mobile-control platforms. The team is comfortable assessing complicated installations, adding components and recommending straightforward solutions when a full replacement is unnecessary.

Its working style is defined by meticulous installation, clear explanations and responsive communication. Customers seeking practical system modifications, careful troubleshooting or a cleanly managed installation may appreciate the combination of technical problem-solving and restrained recommendations.

Next Step Communications, LLC, Denver#3
What stands out
  • Surveillance and structured cabling

  • Clean, concealed cable routing

Next Step Communications, LLC

5.0244 reviews
1459 Skyway Dr, Longmont, CO 80504, United States
Best for
Whole-home camera installationsNetworking and low-voltage wiring

Next Step Communications installs video surveillance, structured cabling, networking, low-voltage wiring and related home technology for residential and commercial properties serving the Denver region and Northern Colorado. The team also handles Starlink, distributed audio and home theater projects.

Installations are planned around the property and the customer’s intended use, with careful attention to cable routing, camera placement and a clean finished appearance. Technicians explain features as they work and can provide detailed estimates after an on-site review, including evening and weekend residential appointments.

Colorado Security Company, Denver#4
What stands out
  • Customized property assessments

  • Existing hardware can be reused

Colorado Security Company

4.8438 reviews
2401 S Downing St, Denver, CO 80210, United States
Best for
Residential alarm and camera systems

Colorado Security Company designs and installs burglar alarm and security camera systems for Denver-area homes and businesses. The process begins with a direct assessment of the property, followed by a customized proposal that can incorporate existing hardware when that makes sense for the project.

The team is known for clear communication, tidy installation and practical explanations of how the system works. Customers seeking a carefully scoped setup, reasonable equipment choices or a professional handoff after installation may find the company especially appealing.

Vivint, Denver#5
What stands out
  • Centralized smart-home control

Vivint

4.91,236 reviews
1685 S Colorado Blvd Ste. 1699M, Denver, CO 80222, United States
Best for
Households wanting integrated security and automation

Vivint provides professionally installed smart home security in Denver, bringing alarms, cameras, monitoring and home controls together through one connected platform. Depending on the selected system, homeowners can manage security, lighting and thermostat functions remotely from the Vivint app.

The installation experience emphasizes patient demonstrations, clear answers and careful testing before the technician leaves. This makes Vivint a natural fit for households that want a centralized smart-home setup rather than separate devices managed through multiple applications. Equipment, service plans and pricing vary by configuration.

OnTech Smart Services, Denver#6
What stands out
  • Starlink and satellite installation

  • Home technology setup

OnTech Smart Services

4.83,139 reviews
9601 S Meridian Blvd, Englewood, CO 80112, United States
Best for
Homeowners needing Starlink installationSatellite equipment projects

OnTech Smart Services handles home technology installations in the Denver area, including Starlink, satellite equipment and other connected-home projects. Technicians can manage roof work, cable routing and equipment setup, with an emphasis on explaining the plan before beginning and leaving the work area orderly.

The service is relevant for homeowners who prefer professional help with installations that can become time-consuming or technically demanding. Project quality depends on the specific technician and installation, so the scope, mounting approach and finishing details should be established clearly in the estimate.

Security Surveillance System, Denver#7
What stands out
  • Residential and commercial surveillance

Security Surveillance System

4.9449 reviews
10630 E Bethany Dr a, Aurora, CO 80014, United States
Best for
Commercial camera systemsAccess control installations

Security Surveillance System supplies and installs video surveillance, security cameras, burglar alarms, access control and door-entry systems for Denver homes and businesses. Commercial projects can be tailored for settings ranging from small retail spaces to larger multi-unit properties, while residential installations receive the same attention to system configuration and usability.

Technicians are recognized for arriving prepared, explaining the work and teaching customers how to manage the finished system. The company also provides maintenance and troubleshooting, making it useful for new installations, remote-viewing issues and access-control upgrades.

Vivint, Denver#8
What stands out
  • Unified smart-home platform

  • Patient system walkthroughs

Vivint

4.8565 reviews

Vivint offers smart home security and professional installation for Denver-area households, with connected alarms, cameras and remote system management through a unified platform. The service is designed to make everyday security controls easier to operate while supporting broader home automation needs.

Its strongest practical advantage is the attention given to explaining the equipment and walking homeowners through each stage of use. Representatives are described as patient, knowledgeable and willing to answer questions without rushing, which suits customers comparing integrated security systems before moving into a new home or upgrading an existing setup.

All Secure, Denver#9
What stands out
  • Broad residential and commercial security support

All Secure

4.8432 reviews
5701 Independence St, Arvada, CO 80002, United States
Best for
Homes needing integrated security equipmentBusinesses with urgent access or key issues

All Secure serves Denver with residential and commercial security solutions spanning safes, security systems, cameras, access control, alarms and car key systems. Its broader offer is useful when one provider needs to coordinate several parts of a property’s protection rather than handle a single isolated installation.

The business is especially distinguished by patient problem-solving, clear communication and efficient organization. Work is described as carefully finished, while key and access-control assistance can extend to unusual or urgent situations. That combination makes All Secure a sensible fit for homes, businesses and facilities that value hands-on support through setup, programming and follow-up service.

Denver Secure LLC#10
What stands out
  • Tailored cameras, alarms and access control

Denver Secure LLC

4.980 reviews
5650 E Evans Ave #100, Denver, CO 80222, United States

Denver Secure LLC installs and repairs alarms, CCTV and access-control systems for homes, businesses, residential communities and specialized facilities in Denver. Its approach begins with the building’s particular risks and operational needs, allowing the resulting system to be shaped around the property rather than treated as a standard package.

Camera installation and repair are central services, with support that can include multi-door access control and connected surveillance. The team’s strengths are prompt communication, quick professional work and straightforward guidance from planning through completion. It is a strong match for commercial buildings, HOAs and homeowners seeking a responsive security partner.

Pye-Barker Fire & Safety, formerly Mountain Alarm, Denver#11
What stands out
  • Fire protection and commercial security in one service scope

Pye-Barker Fire & Safety, formerly Mountain Alarm

4.7416 reviews
7276 W Mansfield Ave, Lakewood, CO 80235, United States
Best for
Commercial properties with life-safety compliance needsFacilities coordinating alarms and security systems

Pye-Barker Fire & Safety, formerly Mountain Alarm, supports Denver-area businesses with fire protection, commercial security and life-safety services. Its scope includes fire alarm inspection, testing and maintenance, detection systems, sprinklers, backflow prevention, access control, video surveillance, intrusion detection and mass notification.

The emphasis is on keeping critical systems functional, documented and aligned with applicable requirements. Life-safety equipment can include emergency lighting, exit signs, extinguishers and occupant-notification devices, while trained technicians are available for emergency response. This makes the branch particularly relevant to commercial properties managing multiple protection systems under one service plan.

Catalyst Security Group Inc, Denver#12
What stands out
  • Commercial security integration with AI analytics

Catalyst Security Group Inc

4.947 reviews
981 E 70th Ave Unit D, Denver, CO 80229, United States

Catalyst Security Group focuses on commercial security installations and integrations in Denver, with capabilities covering access control, CCTV, video surveillance, intrusion detection and AI analytics. The team is equipped for projects where cameras, networks and entry systems must work together across a business property.

Its defining strength is practical project execution: careful planning, creative solutions when site conditions become complicated, timely completion and communication throughout the work. Catalyst is particularly suited to commercial facilities, technology-focused sites and owners who want a knowledgeable installation team able to address both security hardware and the supporting infrastructure.

American Security Professionals, Denver#13
What stands out
  • Custom Honeywell systems with smart integration

American Security Professionals

4.747 reviews

American Security Professionals installs custom security systems for Denver homes and businesses, including alarms, cameras and smart integration. The company specializes in Honeywell alarm systems and also provides video surveillance, monitoring and tailored options for different property types.

Its service stands out for detailed consultations, accessible support and careful explanations of how the system will work. Installers take time to assess the property, discuss practical choices and help with app-related questions after installation. With a long-standing Denver presence and a family-owned structure, it suits property owners looking for a continuing local partner rather than a one-time equipment drop-off.

Your Security Man, Denver#14
What stands out
  • Practical systems without unnecessary upgrades

Your Security Man

5.028 reviews

Your Security Man installs and monitors security systems for homes and businesses across Denver and nearby areas. The service can include alarms, cameras, phone access and ADT-connected monitoring, with attention to using existing sensors when they remain suitable.

Joel’s approach is notably consultative: he explains options, trade-offs and budget considerations without forcing unnecessary features. Installations are handled quickly and questions receive responsive follow-up, including help connecting customers with service for equipment issues. It is a good fit for homeowners who want a clear recommendation and a practical system rather than the most complicated technology available.

The comparison at a glance

#BusinessRatingReviewsBest for
#1SafeStreets Home Security Denver 4.91,444Home alarm installations
#2Security Central Inc. 4.9836Existing alarm upgrades
#3Next Step Communications, LLC 5.0244Whole-home camera installations
#4Colorado Security Company 4.8438Residential alarm and camera systems
#5Vivint 4.91,236Households wanting integrated security and automation
#6OnTech Smart Services 4.83,139Homeowners needing Starlink installation
#7Security Surveillance System 4.9449Commercial camera systems
#8Vivint 4.8565—
#9All Secure 4.8432Homes needing integrated security equipment
#10Denver Secure LLC 4.980—
#11Pye-Barker Fire & Safety, formerly Mountain Alarm 4.7416Commercial properties with life-safety compliance needs
#12Catalyst Security Group Inc 4.947—
#13American Security Professionals 4.747—
#14Your Security Man 5.028—

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Map of security system installers in Denver

No verified neighborhoods are attached to these installer profiles, so coverage is best assessed by the service address and the type of project each company accepts. This matters when equipment, wiring, or access points make an on-site assessment necessary. Before booking, ask whether the installer travels to your property, how soon a survey can be arranged, and whether follow-up maintenance is handled locally. Confirming those details can prevent delays after the first visit.

Services to compare

  • Home alarm installationPlan a new residential alarm system with guided setup and a discussion of how the household will use it.
  • Camera system installationArrange whole-home or commercial camera coverage, including positioning, recording needs, and system integration.
  • Alarm upgradesModernize an existing alarm installation while checking which current components can remain in service.
  • Mobile-control integrationConnect compatible security equipment with mobile controls and clarify what can be monitored remotely.
  • Access controlCompare installers for access control projects serving homes, offices, or other commercial spaces.
  • Low-voltage wiringUse specialist help for networking, cabling, and connected-home infrastructure that supports security equipment.
  • System troubleshootingSeek diagnosis for complex faults, intermittent performance, or equipment that no longer communicates correctly.

How to choose security system installers in Denver

  1. Define the project scopeList every door, camera position, alarm zone, and connected device so quotes address the same installation rather than vague coverage.
  2. Ask about existing equipmentProvide model numbers for current alarms or cameras and ask what can be reused, replaced, or integrated with mobile control.
  3. Clarify wiring requirementsAsk whether the project needs new low-voltage wiring, networking changes, attic access, or wall repairs before work begins.
  4. Separate diagnosis from repairConfirm whether troubleshooting is billed or scheduled separately and what information the installer needs to identify the fault.
  5. Confirm timing and cleanupRequest an estimated installation window and ask how cables, drilling, packaging, and work areas will be left afterward.
  6. Plan maintenanceAsk what ongoing checks are recommended, who handles service visits, and how quickly support is normally arranged.

Frequently asked questions

Can an installer upgrade an existing alarm instead of replacing it?

Often, the answer depends on the equipment, wiring, software, and desired features. Give the installer the system details and ask for a compatibility assessment before approving a full replacement.

Do security installers also handle cameras and automation?

Some do. The profiles include providers focused on camera installations, integrated security and automation, mobile controls, and connected-home work. Ask whether the proposed equipment will operate together as one usable system.

When is low-voltage wiring important?

It matters when cameras, networking, access control, or other connected devices need reliable cabling. Ask for a wiring plan, the route of each cable, and how visible runs or wall penetrations will be handled.

Should I book a site assessment first?

A site assessment is useful for whole-home cameras, access control, complex upgrades, and projects involving new wiring. It lets the installer discuss coverage, equipment placement, connectivity, and practical installation constraints.

How far in advance should I schedule work?

Timing varies by project and installer. If the work involves several cameras, troubleshooting, or custom wiring, ask about the earliest assessment and installation dates before making other arrangements.

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