Straight answers from an electrical contractor that's been wiring Colorado since 1981: what's typical in the Denver market in 2026, what actually drives the number up or down, how permits and Xcel coordination work, and how long the whole thing takes.
In the Denver metro in 2026, a full 100-amp-to-200-amp service upgrade — new panel, meter socket, service entrance, and grounding, permitted and inspected — typically lands between $4,000 and $7,500. A like-for-like panel replacement that keeps your existing service size usually runs $1,500 to $4,000.
Those are market-typical ranges, not our price list — the honest number for your house depends on things a contractor can only see on site. But if a quote lands far outside these ranges in either direction, ask why. As a published comparison point, Denver contractor UniColorado lists $5,050–$7,350 for a 200A upgrade in its own 2026 cost guide — squarely inside the range above.
| Scope of work | Typical range |
|---|---|
| Like-for-like panel replacementSame service size — new panel & breakers only | $1,500 – $4,000 |
| 100A → 200A full service upgradePanel, meter socket, service entrance & grounding | $4,000 – $7,500 |
| Electrical permitVaries by jurisdiction — Denver, home-rule cities, or State Electrical Board | $100 – $500 |
Market-typical ranges compiled from published Denver-area cost guides and 2026 market data — not Over-All Electric line-item pricing. Every home gets a written, flat quote after a load calculation and site visit.
G-101.1
Plenty of older panels are fine. These are the situations where replacement or a service upgrade is genuinely warranted:
G-101.2
Swapping a panel for a new one at the same size is the simple case. Going from 100A to 200A means the service entrance conductors, meter socket, and grounding system usually change too — that's the difference between the two rows in the table above. It's a different project wearing the same name.
Overhead services with an aging mast or riser, undersized conductors, or clearance problems add real work. Underground services can require utility-side coordination. This is the single biggest "we had to open up the quote" item in the metro.
Every panel replacement in Colorado requires a permit and inspection. Fees typically run $100–$500 depending on where you live — the City & County of Denver runs its own program, several home-rule cities run theirs, and everywhere else falls to the State Electrical Board (details below).
A service upgrade requires Xcel to disconnect and reconnect your service. Contractors who do these weekly know the process and schedule it tightly; the coordination itself is part of the cost, and Xcel's schedule is part of your timeline.
Grounding electrode upgrades, bonding for water and gas lines, AFCI/GFCI protection required by current code when circuits are touched, relocating the panel, adding a subpanel or whole-home surge protection — each is legitimate scope that moves the number. A good quote itemizes what's included so you're comparing like to like.
G-101.3
The physical work is usually one day, with your power off for roughly 4–8 hours. The calendar looks more like this:
Plan on one to three weeks from signed quote to inspected, finished upgrade — longer if your jurisdiction's inspection queue or Xcel's schedule is backed up.
G-101.4
Colorado splits electrical permitting two ways:
What doesn't change: the permit is not optional. Unpermitted panel work surfaces during home sales and insurance underwriting with impressive reliability, and retro-permitting someone else's uninspected work costs more than doing it right once. A legitimate contractor pulls the permit as part of the job — if a bidder suggests skipping it "to save you money," that's your cue to keep shopping.
G-101.5
A panel is the one piece of your electrical system where everything in the house meets the utility. Mistakes don't flicker a light — they cook service conductors, fail inspections, void insurance claims, and in the worst cases start fires. Colorado requires this work to be done by a licensed electrical contractor under permit for exactly that reason.
Before you hire anyone, ask three questions: What's your Colorado electrical contractor license number? Who pulls the permit? Who coordinates the Xcel disconnect? If any answer is fuzzy, the price doesn't matter.
For a full 100A-to-200A service upgrade in the Denver metro — new panel, meter socket, service entrance, and grounding, permitted and inspected — most homeowners see quotes in the $4,000 to $7,500 range in 2026. As a published comparison point, Denver contractor UniColorado lists $5,050 to $7,350 for a 200A upgrade. A like-for-like panel swap that keeps your existing service size typically runs $1,500 to $4,000. Quotes far below these ranges usually exclude the meter, service entrance, grounding, or the permit.
Yes — always. A panel replacement or service upgrade requires an electrical permit and inspection everywhere in the Denver metro. The City and County of Denver runs its own permitting and inspection program; some surrounding home-rule cities do too, while other areas fall under the Colorado State Electrical Board. Permit fees typically run about $100 to $500 depending on the jurisdiction. Unpermitted panel work routinely surfaces during home sales and insurance underwriting, and fixing it after the fact costs more than permitting it up front.
The on-site work is usually one day, with the power off for roughly four to eight hours. The full project takes longer than that day: a service upgrade has to be coordinated with Xcel Energy for the disconnect and reconnect, and the work must pass inspection. Plan on one to three weeks from signed quote to finished, inspected upgrade depending on utility and inspection scheduling in your jurisdiction.
Not always. It depends on a load calculation — a code-defined tally of what your home's service can support. Many 100A homes can take a Level 2 EV charger with load management or a smaller circuit; others are already near capacity and need 200A before adding anything. A licensed electrician should run the load calc before you buy equipment, because the answer changes both the price and the design.
Yes. Federal Pacific (Stab-Lok) and Zinsco panels have well-documented histories of breakers that fail to trip under fault conditions, which is a fire risk. Many insurers now decline or surcharge policies on homes with these panels, and home inspectors flag them on nearly every sale. If your home has one, replacement is strongly recommended regardless of whether you're upgrading service size.
Increasingly, yes. Insurers in Colorado have been sending letters requiring replacement of Federal Pacific/Zinsco panels and fuse boxes as a condition of renewal, and some decline coverage on 60-amp services. If you've received one of these letters, get a licensed contractor's quote and a realistic timeline before your renewal date — the fix is routine, but utility and inspection scheduling means it isn't same-week.
Over-All Electric has been wiring Colorado since 1981 — the same family, three generations of Front Range work, and a BuildZoom score in the top 4% of 55,949 Colorado contractors. We hold CO Electrical Contractor License #1912, pull the permit, run the load calc, and coordinate Xcel — the whole job, one contractor.
Request a quote and a real person calls you back by the next business day — usually sooner. You get a written flat price, and if you don't actually need the upgrade, we'll tell you that too.
Not sure if your panel will survive the buyer's inspection? We'll inspect the whole electrical system for a flat $150 and hand you a detailed written report — what's fine, what's not, what it takes to fix. No upselling; the report is the product.
Book a $150 inspection