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ContractorsRanked

Best Plumbers in Alum Rock, CA (2026)

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

The short answer

  1. 1

    Best overall in Alum Rock: Rooter Hero Plumbing & Air of San Jose, CR Score 66/100; 4.8★ from 3,216 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Drain Doctor, posts 24/7 hours; ranked #2 of 471.

  3. 12

    Most-reviewed: EJ Plumbing & Water Heaters, 3,719 Google reviews at 4.9★, the most of 471 ranked; ranked #12.

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

471 Alum Rock plumbers are ranked here by CR Score, from ten published factors. 201 are open 24/7, 372 open Saturdays and 295 open Sundays, based on posted hours. The median Google rating is 4.9★ across 471 rated businesses.

Most of this list also appears on the Plumbers in San Jose ranking. See Plumbers in San Jose

Top 10 plumbers in Alum Rock at a glance

Top 10 plumbers in Alum Rock at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Rooter Hero Plumbing & Air of San Jose664.8★ (3,216)San Jose, 5 mi away24/7Overall
2Drain Doctor654.9★ (875)San Jose, 4 mi away24/7Emergencies
3Mike Counsil Plumbing and Rooter654.8★ (1,482)San Jose, 5 mi away24/7—
4Elite Rooter644.7★ (1,298)San Jose, 4 mi away24/7—
5Water Heaters Only, Inc644.9★ (552)San Jose, 5 mi away24/7—
6Smart Plumbers Inc. DBA Smart Plumbers & Rooters644.8★ (1,167)Santa Clara, 7 mi away24/7—
7Gogo Rooter644.9★ (459)San Jose, 4 mi away24/7—
8Roto-Rooter Plumbing & Water Cleanup644.8★ (1,657)San Jose, 10 mi away24/7—
9$15 Sewer & Drain Service634.8★ (609)San Jose, 4 mi away24/7—
10Roto-Rooter Plumbing & Water Cleanup634.8★ (1,039)Santa Clara, 7 mi away24/7—

The 471 best plumbers in Alum Rock, 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.

  2. #2 Drain Doctor

    Based in San Jose, 4 mi away

    65/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 875 Google reviews, listed on Google as “Plumber”.

    • 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

  4. #4 Elite Rooter

    Based in San Jose, 4 mi away

    64/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 1,298 Google reviews, listed on Google as “Plumber”.

    • 4.7★ from 1,298 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    245 Kinney Dr, San Jose, CA 95112
    View profile for Elite Rooter(408) 827-1315

  7. #7 Gogo Rooter

    Based in San Jose, 4 mi away

    64/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.9★ from 459 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 459 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    326 Phelan Ave #B, San Jose, CA 95112
    View profile for Gogo Rooter(408) 882-1576

  14. #14 Allstar Plumbing

    Based in San Jose, 4 mi away

    62/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.8★ from 297 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 297 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    326 Phelan Ave # A, San Jose, CA 95112
    View profile for Allstar Plumbing(408) 282-7020

  17. #17 Plumbing Point, Inc.

    Based in Santa Clara, 9 mi away

    62/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 258 Google reviews, listed on Google as “Plumber”.

    • 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

  22. #22 Superior Plumbing

    Based in San Jose, 11 mi away

    62/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.9★ from 433 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 433 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6132 Bollinger Rd, San Jose, CA 95129
    View profile for Superior Plumbing(408) 944-5275

Plumbers ranked #38 to #45

#1 to #25 are shown in full above. Here are #38 to #45, in CR Score order; each links to its profile. We publish the top 45 of 471 ranked plumbers here; the rest are on their profiles.

plumbers in Alum Rock, ranks 38 to 45
RankBusinessCR ScoreGoogle ratingDistance
38Bigg Tree Rooter & Plumbing614.9★ (274)6 mi
45Rooter Solutions Plumbers604.9★ (157)4 mi

Also serving Alum Rock

1 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 Alum Rock
BusinessGoogle ratingDistance
JM Water Heaters & Drains5.0★ (221)7 mi

How much do plumbers cost in Alum Rock?

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

How much do plumbers cost in Alum Rock?
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 Alum Rock plumbers

We scored 471 Alum Rock plumbers 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Alum Rock data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Plumbers in Alum Rock: frequently asked questions

Who is the best plumber in Alum Rock?

By CR Score, the highest-ranked plumber in Alum Rock, CA is Rooter Hero Plumbing & Air of San Jose with a CR Score of 66/100. It has 4.8★ from 3,216 Google reviews. It is open 24/7. Drain Doctor (#2) and Mike Counsil Plumbing and Rooter (#3) follow. We ranked 471 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in Alum Rock?

ContractorsRanked ranks 471 plumbers serving Alum Rock, CA. Another 1 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Alum Rock are open 24/7?

201 ranked plumbers in Alum Rock post 24/7 hours. The highest-ranked are Rooter Hero Plumbing & Air of San Jose (#1), Drain Doctor (#2) and Mike Counsil Plumbing and Rooter (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Alum Rock work on weekends?

372 of 471 ranked plumbers post Saturday hours and 295 post Sunday hours. The highest-ranked open Saturdays are Rooter Hero Plumbing & Air of San Jose (#1), Drain Doctor (#2) and Mike Counsil Plumbing and Rooter (#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 Alum Rock?

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

What Google rating do Alum Rock plumbers have?

The median Google rating among 471 rated plumbers in Alum Rock is 4.9★, with a median of 27 reviews. EJ Plumbing & Water Heaters has the most, 3,719 reviews, and ranks #12. 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 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 Alum Rock

  1. October 2026: CR Scores recalculated for 471 plumbers serving Alum Rock.
  2. October 2026: 8 duplicate listings merged.

More plumbers and Alum Rock pages

Other trades in Alum Rock