90/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 2,857 Google reviews, open 24/7.
- 4.9★ from 2,857 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1020 W 124th Ave #700, Westminster, CO 80234
Best Electricians in Boulder, CO (2026)
347 electricians ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Boulder: Mister Sparky Of Denver, CR Score 90/100; 4.9★ from 2,857 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Mr. Electric of Boulder, posts 24/7 hours; ranked #2 of 347.
- 24
Most-reviewed: Applewood Plumbing Heating & Electric, 16,555 Google reviews at 4.8★, the most of 347 ranked; ranked #24.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
347 Boulder electricians are ranked here by CR Score, from 8 published factors. 71 are open 24/7, 158 open Saturdays and 109 open Sundays, based on posted hours. The median Google rating is 4.9★ across 347 rated businesses.
Top 10 electricians in Boulder at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mister Sparky Of Denver | 90 | 4.9★ (2,857) | Westminster, 16 mi away | 24/7 | Overall |
| 2 | Mr. Electric of Boulder | 88 | 4.8★ (62) | Boulder | 24/7 | Emergencies |
| 3 | A&B Electric | 87 | 5.0★ (995) | Aurora, 25 mi away | 24/7 | — |
| 4 | M and M Heating, Cooling, Plumbing and Electrical | 87 | 4.9★ (3,075) | Longmont, 13 mi away | 24/7 | — |
| 5 | Excel Electric | 86 | 4.9★ (113) | Longmont, 11 mi away | 24/7 | — |
| 6 | Prometheus Electric | 86 | 4.7★ (25) | Boulder | 24/7 | — |
| 7 | Titus Electrical Services | 86 | 4.8★ (1,055) | Berthoud, 21 mi away | 24/7 | — |
| 8 | AAA Service Plumbing, Heating & Electric | 86 | 4.8★ (12,904) | Golden, 21 mi away | 24/7 | — |
| 9 | Salzano Electric Denver | 86 | 5.0★ (369) | Denver, 24 mi away | 24/7 | — |
| 10 | Welzig Heating, Air, Plumbing & Electric | 86 | 4.9★ (1,269) | Longmont, 13 mi away | 24/7 | — |
The 347 best electricians in Boulder, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Boulder
88/100CR ScoreRanked #2 because of its Google rating and availability: 4.8★ from 62 Google reviews, open 24/7.
- 4.8★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1495 Canyon Blvd Ste 212, Boulder, CO 80302
#3 A&B Electric
Based in Aurora, 25 mi away
87/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 995 Google reviews, open 24/7.
- 5.0★ from 995 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Longmont, 13 mi away
87/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 3,075 Google reviews, open 24/7.
- 4.9★ from 3,075 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 S Bowen Cir, Longmont, CO 80501
Based in Longmont, 11 mi away
86/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 113 Google reviews, open 24/7.
- 4.9★ from 113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 90 Disc Dr Unit #1, Longmont, CO 80503
Based in Boulder
86/100CR ScoreRanked #6 because of its Google rating and availability: 4.7★ from 25 Google reviews, open 24/7.
- 4.7★ from 25 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4949 Broadway STE 118, Boulder, CO 80304
Based in Berthoud, 21 mi away
86/100CR ScoreRanked #7 because of its Google rating and availability: 4.8★ from 1,055 Google reviews, open 24/7.
- 4.8★ from 1,055 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 341 1st St Unit E10, Mead, CO 80542
Based in Golden, 21 mi away
86/100CR ScoreRanked #8 because of its Google rating and availability: 4.8★ from 12,904 Google reviews, open 24/7.
- 4.8★ from 12,904 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14998 W 6th Ave Suite 800, Golden, CO 80401
Based in Denver, 24 mi away
86/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 369 Google reviews, open 24/7.
- 5.0★ from 369 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1615 California St Suite 402, Denver, CO 80202
Based in Longmont, 13 mi away
86/100CR ScoreRanked #10 because of its Google rating and availability: 4.9★ from 1,269 Google reviews, open 24/7.
- 4.9★ from 1,269 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1831 Boston Ave, Longmont, CO 80501
Based in Wheat Ridge, 18 mi away
85/100CR ScoreRanked #11 because of its Google rating and availability: 4.8★ from 4,249 Google reviews, open 24/7.
- 4.8★ from 4,249 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9830 Interstate 70 Frontage Rd S, Wheat Ridge, CO 80033
Based in Westminster, 16 mi away
84/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 54 Google reviews, open 24/7.
- 5.0★ from 54 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1341 W 121st Ave, Westminster, CO 80234
Based in Arvada, 18 mi away
84/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 166 Google reviews, open 24/7.
- 4.8★ from 166 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5550 W 60th Ave, Arvada, CO 80003
Based in Golden, 17 mi away
84/100CR ScoreRanked #14 because of its Google rating and availability: 4.7★ from 4,159 Google reviews, open 24/7.
- 4.7★ from 4,159 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 16360 Table Mountain Pkwy, Golden, CO 80403
Based in Thornton, 19 mi away
84/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,027 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 1,027 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2200 E 104th Ave # 205, Thornton, CO 80233
Based in Boulder
84/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 64 Google reviews, listed on Google as “Electrician”.
- 4.7★ from 64 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 1738 Pearl St, Boulder, CO 80302
Based in Federal Heights, 17 mi away
84/100CR ScoreRanked #17 because of its Google rating and availability: 4.9★ from 61 Google reviews, open 24/7.
- 4.9★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2510 W 99th Pl, Federal Heights, CO 80260
Based in Broomfield, 12 mi away
84/100CR ScoreRanked #18 because of its Google rating and availability: 4.8★ from 4,647 Google reviews, open 24/7.
- 4.8★ from 4,647 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11780 Colmans Way, Broomfield, CO 80020
Based in Westminster, 16 mi away
84/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 64 Google reviews, open 24/7.
- 4.8★ from 64 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8671 Wolff Ct, Westminster, CO 80031
Based in Denver, 22 mi away
84/100CR ScoreRanked #20 because of its Google rating and availability: 4.8★ from 3,635 Google reviews, open 24/7.
- 4.8★ from 3,635 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4217 Delaware St, Denver, CO 80216
Based in Denver, 25 mi away
83/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 168 Google reviews, open 24/7.
- 4.9★ from 168 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2789 W Alameda Ave Suite B, Denver, CO 80219
Based in Boulder
83/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Electrician”.
- 4.6★ from 45 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
- Address
- 435 Waite Dr, Boulder, CO 80301
Based in Denver, 24 mi away
83/100CR ScoreRanked #23 because of its Google rating and availability: 4.8★ from 2,877 Google reviews, open 24/7.
- 4.8★ from 2,877 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 646 Bryant St, Denver, CO 80204
Based in Denver, 21 mi away
83/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 16,555 Google reviews, the most Google reviews on this list (16,555).
- 4.8★ from 16,555 Google reviews
- Hours
- Mon–Sun 6 AM–10 PM
- Address
- 5000 W 29th Ave, Denver, CO 80212
Based in Golden, 20 mi away
82/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 328 Google reviews, open 24/7.
- 5.0★ from 328 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15750 S Golden Rd #J, Golden, CO 80401
Electricians ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 347 ranked electricians here; the rest are on their profiles.
Also serving Boulder
20 more electricians within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| 24-7 Restoration, Inc. | 4.8★ (66) | In Boulder |
| Brilliance Electrical Services | 3.0★ (2) | 14 mi |
| Chilcoat Electric | 3.0★ (2) | 13 mi |
| CV Electric Fraser | 5.0★ (1) | In Boulder |
| Dodge Brothers Electric | 4.9★ (21) | 19 mi |
| Golden Hands Handyman Services | 4.7★ (31) | In Boulder |
| Goodfellas Heating, Cooling, Plumbing & Electric | 4.6★ (430) | 17 mi |
| Great West Electrical Contractors | 5.0★ (2) | 14 mi |
| Hafz electrician | In Boulder | |
| Handyman VanHorn | In Boulder | |
| Kanes Electric | 5.0★ (2) | 12 mi |
| Light in the Dark Electric | 5.0★ (22) | 23 mi |
| Lightning Horse Electric LLC | 5.0★ (15) | 13 mi |
| Lone Wolf Electric | 4.4★ (5) | 15 mi |
| Mighty Pine Heating & Air | 4.9★ (550) | 19 mi |
| NCSL International | In Boulder | |
| Omega Custom Design | 5.0★ (1) | In Boulder |
| Rakes Electric | 5.0★ (2) | 12 mi |
| SERVPRO of Greater Boulder | 4.5★ (111) | In Boulder |
| Workhorse Solutions | In Boulder |
How much do electricians cost in Boulder?
National price ranges in USD, not adjusted for Boulder. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Electrical panel upgrade | $518 | $1,347 | $2,193 | Per panel, installed; typical range of customer-reported jobs. US national range | October 2026 |
How to check an electrician's license in Colorado
In Colorado, Colorado State Electrical Board (DORA) licenses Electrical wiring and equipment work.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
How we ranked Boulder electricians
We scored 347 Boulder electricians on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Boulder data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Electricians in Boulder: frequently asked questions
Who is the best electrician in Boulder?
By CR Score, the highest-ranked electrician in Boulder, CO is Mister Sparky Of Denver with a CR Score of 90/100. It has 4.9★ from 2,857 Google reviews. It is open 24/7. Mr. Electric of Boulder (#2) and A&B Electric (#3) follow. We ranked 347 electricians on 8 factors, last updated October 22, 2026.
How many electricians are there in Boulder?
ContractorsRanked ranks 347 electricians serving Boulder, CO. 7 of them are based in Boulder; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which electricians in Boulder are open 24/7?
71 ranked electricians in Boulder post 24/7 hours. The highest-ranked are Mister Sparky Of Denver (#1), Mr. Electric of Boulder (#2) and A&B Electric (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which electricians in Boulder work on weekends?
158 of 347 ranked electricians post Saturday hours and 109 post Sunday hours. The highest-ranked open Saturdays are Mister Sparky Of Denver (#1), Mr. Electric of Boulder (#2) and A&B Electric (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an electrician's license in Colorado?
In Colorado, Colorado State Electrical Board (DORA) handles licensing and covers Electrical wiring and equipment work.
How much does electrical panel upgrade cost in Boulder?
Electrical panel upgrade typically costs $518 to $2,193, with $1,347 typical (Per panel, installed; typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Boulder. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Boulder electricians have?
The median Google rating among 347 rated electricians in Boulder is 4.9★, with a median of 19 reviews. Applewood Plumbing Heating & Electric has the most, 16,555 reviews, and ranks #24. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank electricians?
Each electrician gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Boulder
- October 2026: CR Scores recalculated for 347 electricians serving Boulder.
- October 2026: 1 duplicate listing merged.
More electricians and Boulder pages
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