Three Crowns Electric

Commercial Panels

Longmont, CO

Boulder County • Licensed & Insured

50% of our profit back if we're over time or over budget.

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Commercial Panels • Longmont

Commercial Electrical Panels in Longmont, Colorado

Longmont homeowners and businesses count on Three Crowns Electric for commercial electrical panels. We've been serving Boulder County since 2002 — our trucks are on Longmont streets every week, from Old Town Longmont and Prospect New Town to the neighborhoods that need us most.

Three-phase panel installation, upgrades, and maintenance for commercial facilities — tenant finish, retail buildouts, warehouse expansions, and medical/dental office upgrades. We handle coordination with the utility, load calculations, main switchgear, distribution panels, and sub-panels.

We cover every Longmont neighborhood — Old Town Longmont, Prospect, Mountain Brook, Southmoor Park — and zip codes 80501, 80503, 80504. Whether you're in a 1970s ranch or a brand-new build, the scope is the same: diagnosis first, written quote second, work starts only when you say go.

Common in Longmont

What We Handle in Longmont

  • Tenant finish for a new retail or restaurant space
  • Warehouse expansion needing more three-phase capacity
  • Medical or dental office with specialty equipment loads
  • Existing panel too small for new HVAC or equipment
  • Aging switchgear flagged on an insurance inspection

Commercial Panels in Longmont

$3,000–$15,000+

Pricing for commercial panels in Longmont depends on your home's setup, panel condition, and scope of work. Free estimates — written on paper, no pressure.

50% of our profit back if we go over the quoted timeline or bust the estimate. In writing.

Frequently Asked Questions

Common questions about Commercial Panels in Longmont.

Do you handle commercial tenant finish electrical work?

Yes — it's most of our commercial volume. Retail buildouts, restaurants, offices, medical and dental, light industrial. We coordinate with the GC, the inspector, and the utility from the start so the schedule holds and the certificate of occupancy comes through on time.

Can you work directly with my general contractor?

Yes — that's our preference on most commercial work. We communicate on the GC's schedule, show up for the same meetings the other trades are at, and keep our scope coordinated with plumbing, HVAC, and fire. If you're the property owner running the project directly, we also work that way.

What size commercial panels do you install?

Everything from 200A single-phase up through 800A three-phase main switchgear plus distribution and sub-panels. Bigger than that, we partner with a switchgear specialist we trust. Tell us the facility type, square footage, and equipment list and we'll tell you what you actually need.

How much does a commercial panel upgrade cost?

Typical range is $3,000 to $15,000 or more depending on amperage, whether it's single or three-phase, and whether the utility has to re-feed the service. We quote the whole scope — panel, breakers, feeder, labor, permit, inspection, and utility coordination — as a single itemized number.

Get in Touch
With Our Team

We make it easy to connect with a licensed electrician who understands your needs. Reach out by phone, email, or by filling out the simple form below — and experience the Three Crowns Electric difference.

(970) 645-3114 Admin@Threecrownselectric.Com
Monday – Friday 7:30 am - 5 pm

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