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ContractorsRanked

Best Electricians in Castro Valley, CA (2026)

592 electricians ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Castro Valley: Service Champions, CR Score 90/100; 4.9★ from 1,331 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Go Brilliant Electric, posts 24/7 hours; ranked #2 of 592.

  3. 33

    Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 592 ranked; ranked #33.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

592 Castro Valley electricians are ranked here by CR Score, from 8 published factors. 126 are open 24/7, 361 open Saturdays and 229 open Sundays, based on posted hours. The median Google rating is 5.0★ across 592 rated businesses.

Top 10 electricians in Castro Valley at a glance

Top 10 electricians in Castro Valley at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Service Champions904.9★ (1,331)Livermore, 16 mi away24/7Overall
2Go Brilliant Electric884.8★ (93)Union City, 6 mi away24/7Emergencies
3Art Electrical Services And More875.0★ (334)San Francisco, 22 mi away24/7—
4Cisco Electric875.0★ (17)Ashland, 2 mi away24/7—
5Fuse Electrical874.9★ (82)Fremont, 10 mi away24/7—
6Mr. Electric of Concord CA874.9★ (241)Concord, 18 mi away24/7—
7S&B Electric874.9★ (109)Alamo, 13 mi away24/7—
8Best Electric Systems Danville865.0★ (48)Danville, 12 mi away24/7—
9Golden Electrical Services865.0★ (93)Livermore, 17 mi away24/7—
10Go Brilliant Electric864.9★ (128)Menlo Park, 18 mi away24/7—

The 592 best electricians in Castro Valley, 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.

  1. Ranked #1 in Castro Valley

    #1 Service Champions

    Based in Livermore, 16 mi away

    90/100CR Score

    Ranked #1 because of its Google rating and availability: 4.9★ from 1,331 Google reviews, open 24/7.

    • 4.9★ from 1,331 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    96 Rickenbacker Cir, Livermore, CA 94551
    View profile for Service Champions(925) 397-4867

  5. #5 Fuse Electrical

    Based in Fremont, 10 mi away

    87/100CR Score

    Ranked #5 because of its Google rating and availability: 4.9★ from 82 Google reviews, open 24/7.

    • 4.9★ from 82 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4714 Balboa Way, Fremont, CA 94536
    View profile for Fuse Electrical(341) 206-6225

  14. #14 Lee Electric Corp

    Based in San Leandro, 3 mi away

    86/100CR Score

    Ranked #14 because of its Google rating and trade focus: 5.0★ from 58 Google reviews, listed on Google as “Electrician”.

    • 5.0★ from 58 Google reviews
    Hours
    Mon–Sun 8 AM–6 PM
    Address
    476 Olive St, San Leandro, CA 94578
    View profile for Lee Electric Corp(415) 412-4321

  15. #15 Aguilar Electric

    Based in San Francisco, 18 mi away

    85/100CR Score

    Ranked #15 because of its Google rating and availability: 5.0★ from 72 Google reviews, open 24/7.

    • 5.0★ from 72 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    18 Hale St apt a, San Francisco, CA 94134
    View profile for Aguilar Electric(415) 683-7159

  17. #17 Service Champions

    Based in Livermore, 16 mi away

    85/100CR Score

    Ranked #17 because of its Google rating and availability: 4.9★ from 4,721 Google reviews, open 24/7.

    • 4.9★ from 4,721 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    207 Boeing Ct, Livermore, CA 94551
    View profile for Service Champions(925) 966-1366

  21. #21 Service Champions

    Based in Pleasanton, 9 mi away

    85/100CR Score

    Ranked #21 because of its Google rating and availability: 4.8★ from 2,337 Google reviews, open 24/7.

    • 4.8★ from 2,337 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7020 Commerce Dr, Pleasanton, CA 94588
    View profile for Service Champions(925) 248-3458

  22. #22 Electrical Land

    Based in Hayward, 6 mi away

    85/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.9★ from 96 Google reviews, listed on Google as “Electrician”.

    • 4.9★ from 96 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    30208 Industrial Pkwy SW, Hayward, CA 94544
    View profile for Electrical Land(510) 880-3442

  24. #24 EV Electrical

    Based in Oakland, 10 mi away

    85/100CR Score

    Ranked #24 because of its Google rating and availability: 4.6★ from 38 Google reviews, open 24/7.

    • 4.6★ from 38 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    616 Derby Ave, Oakland, CA 94601
    View profile for EV Electrical(818) 422-6882

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 592 ranked electricians here; the rest are on their profiles.

electricians in Castro Valley, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Go Brilliant Electrician Redwood City855.0★ (34)16 mi
27Hummingbird Electric LLC, Danville855.0★ (26)14 mi
28Expert San Francisco Electricians845.0★ (42)18 mi
29IRBIS Air Plumbing Electrical844.9★ (1,466)23 mi
30Frontline Electrical Services845.0★ (24)15 mi
31T.E.K.ELECTRICAL C/O844.7★ (14)4 mi
32S&B Electric845.0★ (34)18 mi
33Service Champions844.9★ (5,220)22 mi
34Five Or Free Electrical Heating & Air Solutions844.8★ (219)13 mi
35Artes845.0★ (50)22 mi
36VOLTYX SERVICES845.0★ (223)19 mi
37Fuse HVAC, Refrigeration, Electrical & Plumbing844.9★ (1,034)24 mi
38my OAKLAND ELECTRICIAN844.6★ (22)13 mi
39Bright Spark Electricians Milpitas835.0★ (40)21 mi
40Real Electrical Services834.6★ (9)9 mi
41Smart Repair835.0★ (38)8 mi
42Adept Electrical Solutions835.0★ (83)13 mi
43TopTech Electrical835.0★ (7)10 mi
44California Best Electricians834.7★ (106)16 mi
45BR Electric - San Ramon835.0★ (5)9 mi
46Electrical Land834.8★ (46)20 mi
47Service Champions834.9★ (3,407)23 mi
48CEZ Electric and Maintenance835.0★ (52)25 mi
49Electric Force GT835.0★ (31)21 mi
50Walsh Electric834.8★ (42)20 mi

Also serving Castro Valley

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.

Unranked electricians serving Castro Valley
BusinessGoogle ratingDistance
24/7 SF Handyman & Remodelling Service4.6★ (59)19 mi
A & E Electrical Co Inc4.0★ (2)6 mi
A & Zack's Electric5.0★ (2)4 mi
Backup Electrician Hayward3.0★ (2)6 mi
Brennan Electric2.1★ (7)3 mi
Crossroad Services5.0★ (2)4 mi
CT ElectricIn Castro Valley
Fire and Electric5.0★ (2)2 mi
Five Or Free Electrical Heating & Air Solutions4.9★ (89)20 mi
Good Guy Electric and Solar Inc5.0★ (1)In Castro Valley
Harvey ElectricIn Castro Valley
Harvey ElectricIn Castro Valley
Megaton Electric5.0★ (2)6 mi
Mercy Electric5.0★ (81)17 mi
Ortiz Painting Services5.0★ (2)6 mi
Redwood Electric Group1.0★ (2)4 mi
Reliant Alarm Services5.0★ (1)In Castro Valley
ST Discount Electric3.0★ (2)In Castro Valley
Vonnegut Electric & Solar5.0★ (2)4 mi
Wired Right Electric5.0★ (47)19 mi

How much do electricians cost in Castro Valley?

National price ranges in USD, not adjusted for Castro Valley. Each row names its basis and the month we checked it.

How much do electricians cost in Castro Valley?
JobLowTypicalHighBasisChecked
Electrical panel upgrade$518$1,347$2,193Per panel, installed; typical range of customer-reported jobs. US national rangeOctober 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).

  1. Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. 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 Castro Valley electricians

We scored 592 Castro Valley 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Castro Valley data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Electricians in Castro Valley: frequently asked questions

Who is the best electrician in Castro Valley?

By CR Score, the highest-ranked electrician in Castro Valley, CA is Service Champions with a CR Score of 90/100. It has 4.9★ from 1,331 Google reviews. It is open 24/7. Go Brilliant Electric (#2) and Art Electrical Services And More (#3) follow. We ranked 592 electricians on 8 factors, last updated October 22, 2026.

How many electricians are there in Castro Valley?

ContractorsRanked ranks 592 electricians serving Castro Valley, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which electricians in Castro Valley are open 24/7?

126 ranked electricians in Castro Valley post 24/7 hours. The highest-ranked are Service Champions (#1), Go Brilliant Electric (#2) and Art Electrical Services And More (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which electricians in Castro Valley work on weekends?

361 of 592 ranked electricians post Saturday hours and 229 post Sunday hours. The highest-ranked open Saturdays are Service Champions (#1), Go Brilliant Electric (#2) and Art Electrical Services And More (#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 Castro Valley?

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 Castro Valley. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Castro Valley electricians have?

The median Google rating among 592 rated electricians in Castro Valley is 5.0★, with a median of 12 reviews. Service Champions has the most, 5,220 reviews, and ranks #33. 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 Castro Valley

  1. October 2026: CR Scores recalculated for 592 electricians serving Castro Valley.
  2. October 2026: 7 duplicate listings merged.

More electricians and Castro Valley pages

Other trades in Castro Valley