Colorado moved to the 2026 National Electrical Code for permits on or after August 1, 2026, so most commercial lighting jobs permitted this fall are reviewed against the new edition. Permits issued before that date generally stayed on the 2023 code. For a typical LED retrofit, the code edition matters less than the scope: rewiring, new controls, exterior fixtures, and emergency lighting are what pull a job into permit review. Confirm the edition and the permitting authority with whoever pulls your permit before you order fixtures.
Which code edition applies to my lighting project?
The permit date decides it, not the day the lift shows up. Sources report that Colorado adopted the 2026 NEC with an effective date of August 1, 2026, and permits issued before that date generally remained under the 2023 edition.
The NEC isn’t self-enforcing. The edition that applies depends on adoption by the authority having jurisdiction, and Fort Collins, Loveland, Greeley, Windsor, Longmont, and Boulder each run their own permitting and inspection. A building near a city line may fall under the county instead. Before a proposal is signed, the contractor should put in writing which jurisdiction issues the permit and which code edition it will be inspected under.
What changed that touches commercial lighting
Most of what owners notice is outside. One reported 2026 change expands GFCI protection for certain outdoor outlets and hardwired outdoor equipment. That can reach sign lighting, exterior lighting controls, and similar installations, which matters if your project includes wall packs, parking-lot poles, or a lit monument sign.
Inside, the bigger shift is what a retrofit really involves. A fixture swap on an existing circuit is treated differently from ballast-bypass rewiring, new 0–10 V dimming wiring, added occupancy sensors, or changes to emergency lighting circuits. Many commercial buildings run lighting at 277 volts, and some use 480-volt or three-phase distribution, so “it’s just lights” isn’t how an inspector sees it.
Rebates add a second timeline. In Fort Collins, Loveland, and Longmont, the Efficiency Works business program updated its rules on January 1, 2026, and lists existing-facility lighting retrofits as an active path. Xcel Energy projects typically require preapproval before equipment is purchased or installed. Buying fixtures first can cost you the rebate, even if the install passes inspection.
Mistakes we see on commercial retrofits
Ordering fixtures before checking code and rebates. If the scope needs a permit, or the rebate needs preapproval, both should be settled before a pallet of fixtures shows up.
Hearing “we usually skip the permit” and accepting it. Ask whether this exact scope needs a permit, who pulls it, and who schedules the inspection. You should get permit and inspection records at closeout.
Treating exit signs and emergency fixtures like regular lights. Emergency drivers, battery units, and exit signs carry life-safety requirements. Ask what’s being tested versus just replaced.
Comparing bids that don’t cover the same work. A low number can leave out lifts, permit fees, controls programming, disposal, or after-hours labor. Ask for a line-item scope with fixture models and counts.
Frequently asked questions
Does an LED retrofit need an electrical permit?
It depends on the scope and the jurisdiction. Swapping a fixture on the same circuit may be handled differently from rewiring, adding controls, exterior lighting, or anything touching emergency circuits. Your building department makes the call.
Do our emergency lights and exit signs have to be updated for the new code?
Not automatically. Existing equipment isn’t replaced just because the code changed, but any emergency lighting you alter or add should meet the code your jurisdiction has adopted, and it should be tested before closeout.
Can you install lighting after hours so we don’t shut down?
Usually, yes. Ask for a phasing plan up front that covers work hours, which circuits will be shut off and when, and whether after-hours labor is included in the price.
What we do about it
Three Crowns Electric handles commercial lighting for offices, retail, warehouses, and restaurants across Northern Colorado, from LED retrofits to parking-lot and emergency lighting. We confirm the permitting authority and code edition, check whether your utility needs preapproval before anything is ordered, and line-item the scope so you can compare bids honestly. Most commercial lighting projects run $1,000–$20,000+ depending on fixture count, access, controls, and permits. Work is done by salaried technicians under Master Electrician Jon Trujillo, carries a 2-year warranty, and sits behind 518 five-star Google reviews. See our commercial lighting service or call (970) 645-3114.
