Structured cabling and low-voltage installation in Denver
Cablify installs network cabling, fiber, security cameras, access control and Wi-Fi across the Denver metro, from Downtown and the Tech Center to Aurora, Lakewood, Littleton, Broomfield and Boulder.
- Costliest hailstorm
- May 8, 2017, about $2.3 billion insured
- Peak gust at DIA, 2025
- 66 mph
- Biggest recent swing
- 69°F to -3°F in about 40 hours, February 2018
- Record low
- -29°F, January 9, 1875
Colorado’s electrical license stops at Class 2
The state’s electrical law does not apply to Class 2 and Class 3 remote-control, signaling and power-limited circuits as the National Electrical Code defines them. It also exempts security, data processing, communications and sound systems from electrical licensing.
Fire alarm systems at 50 volts or less are exempt from licensing too, but they stay subject to the law’s inspection and permit rules. Power wiring still needs a licensed electrician.
| System | State electrical license |
|---|---|
| Class 2 and Class 3 circuits | Outside the electrical law |
| Security systems of 50 volts or less | Exempt |
| Computer data processing systems | Exempt beyond the controller terminals |
| Telephone, radio and antenna systems | Exempt unless their power cables are hard-wired into the building’s electrical system |
| Fire alarm at 50 volts or less | Exempt from licensing, still inspected and permitted |
Denver and Aurora license the fire trades
Where the state steps back, the cities step in.
Denver
The Denver Fire Department licenses contractors for fire alarm systems, public safety bi-directional amplifier (BDA) systems and mass notification systems. Apprentices working under a journeyman register with the department.
The 2025 Denver Building and Fire Codes, based on the 2024 I-codes, took effect on December 31, 2025. Denver enforces the 2023 National Electrical Code.
Aurora
Aurora issues a Fire Alarm Systems Contractor license, which needs four years as a fire alarm installer or an active NICET Level II certificate. Its Emergency Responder Radio Coverage Contractor license asks the lead installer for an FCC general radio operator’s license and in-building system training.
Aurora does not issue its own electrical contractor license. Electricians use their Colorado state licenses.
We plan the risers, pathways and rooms these systems need and coordinate with your licensed fire alarm and BDA contractors.
Hail, wind and fast swings
The May 8, 2017 storm dropped hail up to baseball size on Denver and its western suburbs and became Colorado’s costliest insured catastrophe, at about $2.3 billion. Colorado logged 244 hail events with stones of an inch or larger in 2025, sixth among the states, and the season peaks in mid-June.
Wind is the other test. The Weather Service recorded gusts of 100 mph or more in and near the foothills in 2025, and in December 2025 Xcel shut off power to about 69,000 customers as a safety measure during high winds.
- Impact-rated camera housings where hail or vandalism is likely
- Mounts, poles and brackets chosen for foothill wind loads
- Battery backup on access control and recorders that covers planned power shutoffs
- Outdoor cameras and enclosures rated for subzero nights and 100°F afternoons
- Server rooms sized for altitude: ASHRAE lowers the allowable inlet temperature for IT equipment above 900 meters, and Denver sits near 1,600
Empty floors, new homes
CBRE put Downtown Denver office vacancy at 40.1% in the third quarter of 2026, against 28.8% for the metro.
Downtown
TIAA’s move out of 293,000 square feet at 1670 Broadway accounted for 61% of the quarter’s lost occupancy.
Southeast and the Tech Center
Vacancy fell to its lowest level since mid-2024 after a fourth straight quarter of positive absorption.
Cherry Creek
Almost all of the metro’s 461,000 square feet of new office construction is here.
Conversions
Five downtown office conversions totaling 520 homes, including the Petroleum and Symes buildings, received almost $56 million in city funding.
A conversion rewires the whole building. The old office cabling comes out, and each apartment needs its own data outlets and Wi-Fi, with building fiber, intercoms, access control and garage cameras shared across the property.
Data centers: Denver paused, Aurora builds
Denver’s City Council unanimously passed a moratorium on new data centers in May 2026. It runs to May 2027 while the city rewrites its rules, and projects already permitted for construction can continue.
That includes CoreSite’s DE3 in Elyria-Swansea, a 180,000 square foot building on a campus planned for about 600,000 square feet and 60 MW. In Aurora, QTS plans more than 160 MW on its 65-acre campus off Gun Club Road.
Inside the hall
Fiber trunks, cross-connects and overhead tray built to the operator’s standards.
Around the site
Cameras, badge readers and mantraps tied into the security system.
Offices and support space
Copper, Wi-Fi and meeting rooms for the staff who run the building.
Monitoring
Network drops for power, cooling and leak sensors.
Across the metro
From the foothills to the airport.
Littleton and Highlands Ranch
Lockheed Martin’s Waterton Canyon campus holds about 8,000 of its roughly 11,000 Colorado employees, and the company plans up to 1,250 new jobs in Douglas and Jefferson counties.
Denver International Airport
82.4 million passengers in 2025, on a 53 square mile site, the largest airport site in North America.
Aurora
Data centers, warehouses and medical campuses east of the city.
Lakewood and the west side
Office parks, federal buildings and retail along the Sixth Avenue corridor.
Broomfield and Boulder
Offices and research space along US 36.
Common questions
Does Colorado require an electrical license for network cabling?
No. Under C.R.S. 12-115-116 the state’s electrical law does not apply to Class 2 and Class 3 circuits, and data, communications and security systems of 50 volts or less are exempt from licensing. Power wiring still needs a licensed electrician.
Who installs fire alarm and BDA systems in Denver?
Contractors licensed by the Denver Fire Department. We plan the pathways and rooms those systems need and coordinate with your licensed vendor.
Does the data center moratorium affect my project?
It pauses new data centers inside Denver city limits until May 2027, and projects already permitted can continue. It does not apply in Aurora or other suburbs.
Which cities do you cover?
Our Denver market covers Denver, Aurora, Lakewood, Englewood, Littleton, Centennial, Highlands Ranch, Broomfield, Westminster and Boulder.
Request a quote in Denver
Send the address, building type and what you need installed. For outdoor cameras, tell us which walls face the weather.