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ContractorsRanked

Best Plumbers in Union City, CA (2026)

775 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Union City: Plumbing Care Inc, CR Score 92/100; 4.9★ from 1,948 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Water Heaters Only, Inc, posts 24/7 hours; ranked #2 of 775.

  3. 18

    Most-reviewed: Jazz Heating, Air Conditioning and Plumbing, 3,438 Google reviews at 4.9★, the most of 775 ranked; ranked #18.

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

775 Union City plumbers are ranked here by CR Score, from 8 published factors. 301 are open 24/7, 582 open Saturdays and 440 open Sundays, based on posted hours. The median Google rating is 4.9★ across 775 rated businesses.

Top 10 plumbers in Union City at a glance

Top 10 plumbers in Union City at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Plumbing Care Inc924.9★ (1,948)San Ramon, 13 mi away24/7Overall
2Water Heaters Only, Inc914.9★ (531)Hayward, 7 mi away24/7Emergencies
3Monarch Plumbing and Rooter Inc914.9★ (248)Hayward, 3 mi away24/7—
4Mr. Rooter Plumbing of The Oakland-Berkeley Area914.9★ (1,283)Oakland, 14 mi away24/7—
5Handy Plumbing Man, LLC914.9★ (1,314)San Carlos, 14 mi away24/7—
6Roto-Rooter Plumbing & Water Cleanup914.8★ (1,239)East Palo Alto, 11 mi away24/7—
7Bayshore Plumbers904.9★ (880)Redwood City, 12 mi away24/7—
8Payless Water Heaters and Tankless Water Heaters904.8★ (353)Newark, 4 mi away24/7—
9Bay Water Plumbing & Water Systems904.9★ (185)Newark, 4 mi away24/7—
10Water Heaters Only, Inc905.0★ (402)Redwood City, 12 mi away24/7—

The 775 best plumbers in Union City, 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 Union City

    #1 Plumbing Care Inc

    Based in San Ramon, 13 mi away

    92/100CR Score

    Ranked #1 because of its Google rating and availability: 4.9★ from 1,948 Google reviews, open 24/7.

    • 4.9★ from 1,948 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2415 San Ramon Valley Blvd UNIT 312, San Ramon, CA 94583
    View profile for Plumbing Care Inc(925) 255-6352

  7. #7 Bayshore Plumbers

    Based in Redwood City, 12 mi away

    90/100CR Score

    Ranked #7 because of its Google rating and availability: 4.9★ from 880 Google reviews, open 24/7.

    • 4.9★ from 880 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3158 Rolison Rd, Redwood City, CA 94063
    View profile for Bayshore Plumbers(650) 523-7970

  16. #16 Bell Plumbing

    Based in San Carlos, 14 mi away

    90/100CR Score

    Ranked #16 because of its Google rating and availability: 4.9★ from 658 Google reviews, open 24/7.

    • 4.9★ from 658 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    611 Industrial Rd #8, San Carlos, CA 94070
    View profile for Bell Plumbing(650) 525-2273

  20. #20 Drain Doctor

    Based in San Jose, 17 mi away

    89/100CR Score

    Ranked #20 because of its Google rating and availability: 4.9★ from 875 Google reviews, open 24/7.

    • 4.9★ from 875 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1277 N 15th St, San Jose, CA 95112
    View profile for Drain Doctor(408) 281-0911

  25. #25 Plumbing Point, Inc.

    Based in Santa Clara, 14 mi away

    89/100CR Score

    Ranked #25 because of its Google rating and availability: 5.0★ from 258 Google reviews, open 24/7.

    • 5.0★ from 258 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4701 Patrick Henry Dr Building 25 Suite 107, Santa Clara, CA 95054
    View profile for Plumbing Point, Inc.(408) 556-9132

Plumbers 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 775 ranked plumbers here; the rest are on their profiles.

plumbers in Union City, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Rooter Hero Plumbing & Air of San Jose894.8★ (3,216)23 mi
27Roto-Rooter Plumbing & Water Cleanup894.8★ (1,039)16 mi
28Smart Plumbers Inc. DBA Smart Plumbers & Rooters894.8★ (1,167)17 mi
29Roto-Rooter Plumbing & Water Cleanup894.8★ (781)15 mi
30All Panthers Plumbing Inc895.0★ (37)1 mi
31Water Heater Specialists894.9★ (350)14 mi
32Water Heaters Only, Inc894.9★ (552)17 mi
33Mr. Rooter Plumbing of The Tri-Valley884.8★ (271)10 mi
34Michael Gardner Plumbing885.0★ (94)9 mi
35R.B. Travis884.8★ (824)17 mi
36Shoreway Plumbing, Inc.884.9★ (253)13 mi
37Union City Plumbing Water Heaters Services885.0★ (49)In Union City
38Mr. Rooter Plumbing of Hayward884.9★ (37)2 mi
39Elite Rooter884.7★ (1,298)18 mi
40Fito Plumbers Inc.884.8★ (98)6 mi
41Jose's Plumbing and Rooter Inc885.0★ (116)12 mi
42Commando Plumbing884.9★ (150)12 mi
43MTZ Plumbing inc885.0★ (160)15 mi
44Star Rooter & Plumbing Inc884.7★ (138)7 mi
45APlus Plumbing874.8★ (28)1 mi
46Superior Plumbing874.9★ (433)20 mi
47Gogo Rooter874.9★ (459)21 mi
48URV Projects Plumbing Service874.9★ (183)15 mi
49USA Leak Detector and Plumbing874.7★ (94)7 mi
50West Peak Trenchless & Plumbing874.9★ (184)16 mi

Also serving Union City

20 more plumbers within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked plumbers serving Union City
BusinessGoogle ratingDistance
Airborne Plumbing5.0★ (2)6 mi
Alpha Omega Plumbing Inc5.0★ (2)11 mi
Aqua Clear Plumbing5.0★ (2)8 mi
Armstrong PlumbingIn Union City
ASAP Plumbing & Water Heater1.0★ (2)8 mi
Cal-Tech Plumbing1.0★ (1)In Union City
Calimo Plumbing Solutions5.0★ (2)8 mi
East Bay Leak Detectors5.0★ (2)6 mi
Gafi Builders and Design, Inc.5.0★ (2)13 mi
Manica Builders3.0★ (2)7 mi
mtz plumbing inc5.0★ (2)1 mi
On R Way Plumbing & Drain Cleaning5.0★ (92)4 mi
Pete's Pipes & Rooter Cleaning5.0★ (2)7 mi
Plamar USA4.5★ (71)In Union City
Plumbing Patrol4.5★ (2)7 mi
Plumbing The Bay4.7★ (148)8 mi
Rooter Tec Plumbing and Drain5.0★ (2)5 mi
VIP Plumbing & Drain3.0★ (2)8 mi
Water Heaters Only5.0★ (2)7 mi
Water Works Plumbing Co. Inc.5.0★ (2)10 mi

How much do plumbers cost in Union City?

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

How much do plumbers cost in Union City?
JobLowTypicalHighBasisChecked
Water heater replacement$882$1,348$1,826Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026

How to check a plumber's license in California

In California, Contractors State License Board (CSLB) licenses C-36 Plumbing contractor license.

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 Union City plumbers

We scored 775 Union City plumbers 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 Union City 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

Plumbers in Union City: frequently asked questions

Who is the best plumber in Union City?

By CR Score, the highest-ranked plumber in Union City, CA is Plumbing Care Inc with a CR Score of 92/100. It has 4.9★ from 1,948 Google reviews. It is open 24/7. Water Heaters Only, Inc (#2) and Monarch Plumbing and Rooter Inc (#3) follow. We ranked 775 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Union City?

ContractorsRanked ranks 775 plumbers serving Union City, CA. 2 of them are based in Union City; 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 plumbers in Union City are open 24/7?

301 ranked plumbers in Union City post 24/7 hours. The highest-ranked are Plumbing Care Inc (#1), Water Heaters Only, Inc (#2) and Monarch Plumbing and Rooter Inc (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Union City work on weekends?

582 of 775 ranked plumbers post Saturday hours and 440 post Sunday hours. The highest-ranked open Saturdays are Plumbing Care Inc (#1), Water Heaters Only, Inc (#2) and Monarch Plumbing and Rooter Inc (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in California?

In California, Contractors State License Board (CSLB) handles licensing and covers C-36 Plumbing contractor license. 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 water heater replacement cost in Union City?

Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Union City. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Union City plumbers have?

The median Google rating among 775 rated plumbers in Union City is 4.9★, with a median of 25 reviews. Jazz Heating, Air Conditioning and Plumbing has the most, 3,438 reviews, and ranks #18. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank plumbers?

Each plumber 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 Union City

  1. October 2026: CR Scores recalculated for 775 plumbers serving Union City.
  2. October 2026: 12 duplicate listings merged.

More plumbers and Union City pages

Other trades in Union City