63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 430 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 430 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4091 Riverside Dr, Chino, CA 91710
Best Electricians in Diamond Bar, CA (2026)
888 electricians ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Diamond Bar: Safe-Way Electric, CR Score 63/100; 4.9★ from 430 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Just Electric | 24/7 Licensed Electricians in Glendora and Covina, CA, posts 24/7 hours; ranked #2 of 888.
- 8
Most-reviewed: All Pro Cooling, Heating, Plumbing & Electrical, 7,425 Google reviews at 4.8★, the most of 888 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
888 Diamond Bar electricians are ranked here by CR Score, from ten published factors. 253 are open 24/7, 576 open Saturdays and 396 open Sundays, based on posted hours. The median Google rating is 4.9★ across 888 rated businesses.
Top 10 electricians in Diamond Bar at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Safe-Way Electric | 63 | 4.9★ (430) | Chino, 6 mi away | 24/7 | Overall |
| 2 | Just Electric | 24/7 Licensed Electricians in Glendora and Covina, CA | 62 | 4.7★ (584) | Covina, 6 mi away | 24/7 | Emergencies |
| 3 | Accurate Electric, Plumbing, Heating and Air | 62 | 4.9★ (951) | Glendora, 8 mi away | 24/7 | — |
| 4 | DMT Electric | 62 | 5.0★ (288) | Upland, 10 mi away | 24/7 | — |
| 5 | Express Electrical Services | 61 | 4.8★ (3,323) | Los Angeles, 20 mi away | 24/7 | — |
| 6 | Electrician Tree In Diamond Bar | 61 | 4.9★ (42) | Diamond Bar | 24/7 | — |
| 7 | Harmony Electrical, Plumbing & Air | 60 | 5.0★ (302) | Whittier, 15 mi away | 24/7 | — |
| 8 | All Pro Cooling, Heating, Plumbing & Electrical | 60 | 4.8★ (7,425) | Ontario, 16 mi away | 24/7 | Most reviews |
| 9 | Service Hero Plumbing, HVAC, and Electrical | 60 | 4.8★ (1,506) | Covina, 7 mi away | 24/7 | — |
| 10 | Electrical Land | 60 | 5.0★ (76) | Brea, 8 mi away | 24/7 | — |
The 888 best electricians in Diamond Bar, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Covina, 6 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 584 Google reviews, listed on Google as “Electrician”.
- 4.7★ from 584 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 217 N Citrus Ave Suite C, Covina, CA 91723
Based in Glendora, 8 mi away
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 951 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 951 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 715 W Foothill Blvd, Glendora, CA 91741
#4 DMT Electric
Based in Upland, 10 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 288 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 288 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W 14th St, Upland, CA 91786
Based in Los Angeles, 20 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 3,323 Google reviews, listed on Google as “Electrician”.
- 4.8★ from 3,323 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1011 Goodrich Blvd, Los Angeles, CA 90022
Based in Diamond Bar
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 42 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 42 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 750 N Diamond Bar Blvd, Diamond Bar, CA 91765
Based in Whittier, 15 mi away
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 302 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 302 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9826 Painter Ave Unit E, Whittier, CA 90605
Based in Ontario, 16 mi away
60/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 7,425 Google reviews, the most in Diamond Bar.
- 4.8★ from 7,425 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5001 Ontario Mills Pkwy, Ontario, CA 91764
Based in Covina, 7 mi away
60/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 1,506 Google reviews.
- 4.8★ from 1,506 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 706 Arrow Grand Cir, Covina, CA 91722
#10 Electrical Land
Based in Brea, 8 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 76 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 485 Apricot Ave, Brea, CA 92821
Based in Brea, 9 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 59 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 420 Apollo St # B, Brea, CA 92821
#12 MG Electric
Based in Glendora, 6 mi away
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 101 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 7 AM–5 PM · Sun 8 AM–4 PM
- Address
- 752 E Juanita Ave, Glendora, CA 91740
Based in Costa Mesa, 24 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 825 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 825 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 555 Anton Blvd Suite 150, Costa Mesa, CA 92626
Based in Avocado Heights, 4 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Whittier, 14 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 148 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 148 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11721 Whittier Blvd, Whittier, CA 90601
Based in Arcadia, 1 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 41 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
Based in Chino, 14 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 108 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 108 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Whittier, 13 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 86 Google reviews, listed on Google as “Electrical installation service”.
- 5.0★ from 86 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6528 Greenleaf Ave ste 130, Whittier, CA 90601
#19 AVE. Electric
Based in Chino, 3 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Avocado Heights, 9 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 63 Google reviews, listed on Google as “Electrical installation service”.
- 4.8★ from 63 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15463 Valley Blvd #6000, City of Industry, CA 91746
#21 The Volt Masters
Based in Anaheim, 12 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 122 Google reviews, listed on Google as “Electrical installation service”.
- 4.8★ from 122 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1088 N Tustin Ave #8800, Anaheim, CA 92807
Based in Arcadia, 7 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 28 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Chino, 6 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Rowland Heights, 4 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Electrician”.
- 4.8★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19536 E Walnut Dr S, Rowland Heights, CA 91748
Based in Anaheim, 12 mi away
59/100CR ScoreRanked #25 because of its Google rating and review volume: 5.0★ from 1,899 Google reviews.
- 5.0★ from 1,899 Google reviews
- Hours
- Mon–Fri 6 AM–8 PM · Sat–Sun 7 AM–7 PM
- Address
- 5612 E La Palma Ave, Anaheim, CA 92807
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 888 ranked electricians here; the rest are on their profiles.
Also serving Diamond Bar
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 |
|---|---|---|
| A&F Electric | 5.0★ (2) | 5 mi |
| ACOSolar Inc | 5.0★ (2) | 1 mi |
| Adams Electric | In Diamond Bar | |
| Adaptive Power Company | 5.0★ (53) | 6 mi |
| Alewine Construction Corp | In Diamond Bar | |
| Amped Up Electrical Services | In Diamond Bar | |
| Diamond Bar Affordable Electrician Specialists | In Diamond Bar | |
| Electrician Services Corp | 4.9★ (21) | 9 mi |
| Empire Energy Solutions | 5.0★ (1) | In Diamond Bar |
| FJS Electrical Services | 5.0★ (2) | 6 mi |
| High Voltage Electrical | 5.0★ (62) | 19 mi |
| JC Electric | 5.0★ (2) | 7 mi |
| Ledezma Electric | 5.0★ (1) | In Diamond Bar |
| Local Expert Electrician | 5.0★ (2) | 4 mi |
| Peter Wrate Electric | 5.0★ (2) | 3 mi |
| Pio's Electrical | 2.0★ (2) | 5 mi |
| Post Electric Co | 5.0★ (1) | In Diamond Bar |
| Smart Construction | In Diamond Bar | |
| Systems Telecommunications | In Diamond Bar | |
| Upvanta Electrician | 5.0★ (24) | 8 mi |
How much do electricians cost in Diamond Bar?
National price ranges in USD, not adjusted for Diamond Bar. 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 California
In California, Contractors State License Board (CSLB) licenses C-10 Electrical contractor license (electricians themselves are certified by the Department of Industrial Relations).
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- 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 Diamond Bar electricians
We scored 888 Diamond Bar electricians on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Diamond Bar data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Electricians in Diamond Bar: frequently asked questions
Who is the best electrician in Diamond Bar?
By CR Score, the highest-ranked electrician in Diamond Bar, CA is Safe-Way Electric with a CR Score of 63/100. It has 4.9★ from 430 Google reviews. It is open 24/7. Just Electric | 24/7 Licensed Electricians in Glendora and Covina, CA (#2) and Accurate Electric, Plumbing, Heating and Air (#3) follow. We ranked 888 electricians on ten factors, last updated October 22, 2026.
How many electricians are there in Diamond Bar?
ContractorsRanked ranks 888 electricians serving Diamond Bar, CA. 1 of them is based in Diamond Bar; 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 Diamond Bar are open 24/7?
253 ranked electricians in Diamond Bar post 24/7 hours. The highest-ranked are Safe-Way Electric (#1), Just Electric | 24/7 Licensed Electricians in Glendora and Covina, CA (#2) and Accurate Electric, Plumbing, Heating and Air (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which electricians in Diamond Bar work on weekends?
576 of 888 ranked electricians post Saturday hours and 396 post Sunday hours. The highest-ranked open Saturdays are Safe-Way Electric (#1), Just Electric | 24/7 Licensed Electricians in Glendora and Covina, CA (#2) and Accurate Electric, Plumbing, Heating and Air (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an electrician's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-10 Electrical contractor license (electricians themselves are certified by the Department of Industrial Relations). Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does electrical panel upgrade cost in Diamond Bar?
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 Diamond Bar. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Diamond Bar electricians have?
The median Google rating among 888 rated electricians in Diamond Bar is 4.9★, with a median of 13 reviews. All Pro Cooling, Heating, Plumbing & Electrical has the most, 7,425 reviews, and ranks #8. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Diamond Bar
- October 2026: CR Scores recalculated for 888 electricians serving Diamond Bar.
- October 2026: 8 duplicate listings merged.
More electricians and Diamond Bar pages
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