4.9/5.0 2,140+ Google reviews
#1 Top-Rated Electrical Company in Denver, CO
Master electricians who quote the whole job in writing before a single wire moves — then leave your walls, floors, and breaker labels cleaner than we found them.
- Licensed, bonded & insured master electricians
- Upfront flat-rate pricing — quoted before work starts
- Same-day service across the Denver metro
- Licensed & insured — CO ME# 3004821
- Background-checked technicians
- 5-year workmanship warranty
- Same-day appointments
- Permits pulled & inspections met
- jobs completed last year
- 4,300+
- average emergency response
- 42 min
- across 2,140 Google reviews
- 4.9 / 5
- of quotes honored — no surprise line items
- 100%
Service index
What we fix, wire, and upgrade
View all servicesEvery job below is quoted flat-rate up front and covered by a five-year written workmanship warranty.
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Panel Upgrades & Replacement Aging fuse boxes and crowded 100-amp panels replaced with a labeled, code-current 200-amp service — permit pulled, inspection met, and the old panel hauled away. Explore this service
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Whole-Home Rewiring Knob-and-tube and aluminum branch circuits retired room by room, staged so your power is never off overnight — even mid-project. Explore this service
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Lighting Design & Installation Recessed layouts, dimmer scenes, and under-cabinet runs planned to the inch — patched and painted clean where we cut. Explore this service
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EV Charger Installation Level 2 chargers sized to your panel’s real capacity, with load calculations documented for your inspector and your insurer. Explore this service
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Outlets, Switches & GFCI Dead outlets, warm switch plates, two-prong receptacles, and missing GFCI protection fixed in a single visit, tested under load. Explore this service
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24/7 Emergency Electrical & Troubleshooting Burning smells, sparking outlets, and total power loss reach a live dispatcher any hour of any day — someone who can see the real schedule and commit to an arrival time on the first call. Explore this service
EST. 2012 CO ME# 3004821
Why homeowners pick us
The boring promises, kept every single visit
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What you approve is what you pay
You sign off on a flat-rate number in writing before any tool comes out of the truck. If a job runs longer or turns out more complicated once a wall is open, that risk sits with us — the number you approved doesn’t move.
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We work with what’s actually behind the wall
Older wiring, mismatched work from past owners, and additions tied into original circuits all get diagnosed on their own terms. We repair what can be repaired and say so plainly when a section needs to come out.
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A licensed electrician runs every job
Every visit is run by a licensed journeyman or master electrician, not an apprentice working unsupervised. Every truck can pull a permit and pass an inspection without a callback.
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We leave it labeled and clean
Drop cloths down, a typed panel directory, and a swept-clean finish are standard on every visit — not reserved for the jobs we think you’re watching closely. You should notice the power is back on, not that we were ever inside.
How it works
From first call to five-year guarantee
The same four steps on every job — a repair visit or a whole-home rewire.
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Reach a real person fast
Call or submit the form and a dispatcher confirms your arrival window within minutes — most standard calls get a same-day slot.
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See the price before we start
The electrician on-site diagnoses the problem with meters and writes up a flat-rate quote before opening a panel. There’s no hourly meter running while you decide.
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The work gets done to code
Proper materials, NEC-compliant methods, and a room-by-room walkthrough with you before anyone packs up the truck.
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Backed by a written guarantee
Five years on labor, printed directly on your invoice. If anything we touched gives you trouble, we come back and fix it at no charge.
Recent work
Jobs from the last few months
Real streets, real houses, no stock-photo showroom. Captions tell you what happened at each one.
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A tired breaker swapped and torque-checked, no callback needed
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Copper runs pulled clean, labeled, and to code
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A dedicated subpanel added for a finished basement, no main upgrade required
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A full safety inspection before we ever quote a repair
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Standby generator wired in and load-tested before the next outage
Google reviews for Copperline Electric
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Panel died on a Friday, new 200-amp service energized Monday afternoon. The quote they texted Saturday was the exact amount on the invoice. That alone earns the fifth star.
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Two other companies wanted to open three walls to find a dead circuit. Copperline traced it with a meter in forty minutes — one small cut, patched before they left.
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Booked online at 7am, electrician at the door by 10:30. He put down runners without being asked and labeled every breaker in a panel he wasn’t even there to fix.
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Whole-house rewire on our 1948 bungalow. Five days, power on every evening, and the typed panel directory at the end was a thing of beauty.
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EV charger installed with a proper load calc, permit and all — passed inspection first try. Only ding: the first appointment slot was three days out during a cold snap.
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Third time using them. Same story every time: on time, flat price honored, work explained in plain English. They’re our electricians now, full stop.
Proof of volume
3,800+ jobs across the metro
Every glow on this map is a neighborhood we worked in in the last 12 months. The bigger the glow, the more doors we knocked on. Your street is probably already on our routes.
- Highlands 512 jobs
- Lakewood 419 jobs
- Capitol Hill 402 jobs
- Cherry Creek 387 jobs
The crew
The people who show up at your door
Photos on the vans match the faces at your door — no rotating subcontractors, no strangers.
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Walt Brennan
Owner · Master Electrician
Started Copperline in 2012 with one van and a rule: quote it straight, wire it once. Still rides along on every service upgrade.
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Reese Calder
Master Electrician
Twenty years in, the tech other electricians call when a diagnosis doesn’t add up. Leads our troubleshooting work.
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Finn Hartigan
Lead Technician
Runs our emergency rotation. Holds the company record: dispatch to restored power in 51 minutes.
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June Hartley
Service Manager
The voice on the phone and the reason your arrival window is real. Builds every route herself, every morning.
A one-minute welcome from the owner.
Where we work
Serving Denver and the surrounding metro
Dispatching from 2340 Larimer St — same-day windows in every neighborhood below and the streets around it.
- Highlands Serving Highlands and surrounding neighborhoods
- Five Points Serving Five Points and surrounding neighborhoods
- Capitol Hill Serving Capitol Hill and surrounding neighborhoods
- Cherry Creek Serving Cherry Creek and surrounding neighborhoods
- Washington Park Serving Washington Park and surrounding neighborhoods
- Lakewood Serving Lakewood and surrounding neighborhoods
Questions, answered straight
Things people ask before they book
Anything else? Call (720) 555-0147 — a dispatcher answers, not a phone tree.
Ask us directlyHow soon can someone actually get to my house?
Standard calls typically get a same-day or next-morning window. Dead circuits, sparking outlets, breakers that won’t reset, and burning smells jump the queue and get dispatched immediately — a live scheduler checks real truck locations and gives you an honest arrival time instead of a vague estimate.
Is the estimate really free, or does that change once you’re here?
It stays free. Diagnosis and a written flat-rate quote don’t cost anything on a standard visit, and the number you approve is the number on the final invoice — not a starting point for negotiation.
How do I know your electricians are actually licensed?
Ask, and expect a straight answer with a license number on the spot. Every job here is run by a licensed journeyman or master electrician, and we carry full liability coverage — no unsupervised apprentices sent out alone.
My house has old wiring — knob-and-tube, aluminum branch circuits, two-prong outlets — can you even work with that?
That describes a large share of the homes we work in. Knob-and-tube behind plaster walls, aluminum branch circuits from the 60s and 70s, ungrounded two-prong outlets — we diagnose what’s actually there and explain the options in plain terms, targeted repair versus a staged rewire.
Do you actually pull permits, or is that an upcharge?
Permits are pulled whenever the work legally requires one — panel upgrades, rewires, new circuits — and it’s built into the quote, not added after. We schedule the inspection and meet the inspector ourselves. Treat a suspiciously cheap panel or rewire quote that skips this step as a red flag.
What happens if something you fixed breaks again?
You’re covered by a five-year written labor guarantee on every repair, printed on the invoice. Come back within that window and we make it right at no charge. Installed equipment also carries its full manufacturer warranty.
How can I pay, and is financing actually available?
Card, check, and cash are all accepted, along with financing on larger jobs like panel upgrades and whole-home rewires. Financing terms are approved and locked in before work starts — never presented as a surprise at the end.
When you say 24/7, does a human actually answer at 3 AM?
Yes — nights, weekends, and holidays ring to the same on-call dispatcher who runs the daytime schedule, not a machine or a third-party answering service. They can see truck locations in real time and commit to a window on that first call.
One last nudge
Get your free estimate today
Tell us what’s going on and a dispatcher will confirm your window — usually within the hour.
Free estimates · Flat-rate pricing · CO ME# 3004821