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ContractorsRanked

Best Plumbers in San Marino, CA (2026)

1,744 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in San Marino: Merry Plumbing, CR Score 94/100; 5.0★ from 652 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Western Rooter & Plumbing, posts 24/7 hours; ranked #2 of 1,744.

  3. 29

    Most-reviewed: Barker and Sons Plumbing & Rooter, 3,896 Google reviews at 4.8★, the most of 1,744 ranked; ranked #29.

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

1,744 San Marino plumbers are ranked here by CR Score, from 8 published factors. 909 are open 24/7, 1,435 open Saturdays and 1,154 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,744 rated businesses.

Top 10 plumbers in San Marino at a glance

Top 10 plumbers in San Marino at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Merry Plumbing945.0★ (652)San Marino24/7Overall
2Western Rooter & Plumbing934.9★ (1,562)Arcadia, 5 mi away24/7Emergencies
3Roto-Rooter Plumbing & Water Cleanup924.9★ (736)Pasadena, 3 mi away24/7—
4Roto-Rooter Plumbing & Water Cleanup924.8★ (1,128)Alhambra, 4 mi away24/7—
5Drainflow Solutions & Plumbing915.0★ (276)Duarte, 6 mi away24/7—
6Roto-Rooter Plumbing & Water Cleanup914.9★ (682)Glendale, 9 mi away24/7—
7Monkey Wrench Plumbing, Heating, Air & Electric904.8★ (269)Pasadena, 2 mi away24/7—
8Advantage Plumbing & Rooter905.0★ (305)Glendale, 10 mi away24/7—
9High Speed Rooter & Plumbing904.8★ (362)El Monte, 5 mi away24/7—
10Top Notch Plumbing Inc.905.0★ (515)Covina, 13 mi away24/7—

The 1,744 best plumbers in San Marino, 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 San Marino

    #1 Merry Plumbing

    Based in San Marino

    94/100CR Score

    Ranked #1 because of its Google rating and availability: 5.0★ from 652 Google reviews, open 24/7.

    • 5.0★ from 652 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1465 San Marino Ave, San Marino, CA 91108
    View profile for Merry Plumbing(626) 414-5583

  13. #13 Service Squad

    Based in Pasadena, 2 mi away

    90/100CR Score

    Ranked #13 because of its Google rating and availability: 4.9★ from 131 Google reviews, open 24/7.

    • 4.9★ from 131 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    680 E Colorado Blvd Suite 180, Pasadena, CA 91101
    View profile for Service Squad(626) 624-4288

  22. #22 R.G.Plumbing

    Based in Florence-Graham, 8 mi away

    89/100CR Score

    Ranked #22 because of its Google rating and availability: 5.0★ from 123 Google reviews, open 24/7.

    • 5.0★ from 123 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for R.G.Plumbing(323) 578-5762

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 1,744 ranked plumbers here; the rest are on their profiles.

plumbers in San Marino, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Casey & Sons Plumbing & Electric884.9★ (99)5 mi
27Dymek's Freedom Plumbing, Inc885.0★ (1,063)23 mi
28Proview Plumbing & Rooter885.0★ (293)15 mi
29Barker and Sons Plumbing & Rooter884.8★ (3,896)24 mi
30Nolasco Plumbing, Inc.885.0★ (89)7 mi
31Roto-Rooter Plumbing & Water Cleanup884.8★ (940)16 mi
32Flood Brothers Plumbing884.8★ (1,036)17 mi
33Monkey Wrench Plumbing, Heating, Air & Electric884.8★ (464)12 mi
34Mr Drain Saver Plumbing & Rooter.885.0★ (58)5 mi
3524/7 Rooter Service🔧885.0★ (130)11 mi
36Professional Plumbing Services Inc.884.9★ (133)8 mi
37Rapid Rhino Plumbing884.9★ (82)5 mi
38Rare Plumbing885.0★ (37)2 mi
39The Pro Plumbing884.9★ (48)2 mi
40Roto-Rooter Plumbing & Water Cleanup884.9★ (375)15 mi
41Agent Rooter Plumbing885.0★ (196)14 mi
42Free Flo Rooter & Plumbing885.0★ (584)9 mi
43I Love Sewers Rooter And Plumbing Sewer Specialties Inc884.9★ (200)12 mi
44Monkey Wrench Plumbing, Heating, Air & Electric884.9★ (253)13 mi
45Mr. Rooter Plumbing of South San Gabriel884.8★ (123)6 mi
46Katty's Plumbing Arcadia885.0★ (41)4 mi
47Power Plumbing884.8★ (551)15 mi
48Rooter Hero Plumbing & Air of Los Angeles884.8★ (1,243)19 mi
49Good News Plumbing & Drain884.9★ (237)14 mi
50New Generation Plumbing884.7★ (143)6 mi

Also serving San Marino

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 San Marino
BusinessGoogle ratingDistance
A. R. C- Commercial Contractors5.0★ (2)11 mi
AAA Plumbing USA5.0★ (2)3 mi
ABC Plumbing & Heating Co4.5★ (2)9 mi
All Rooter Solutions5.0★ (2)10 mi
Courtesy Plumbing4.8★ (387)13 mi
Dynamite Plumbing5.0★ (2)3 mi
I-Plumbing Services5.0★ (2)8 mi
Jerez Plumbing | Emergency Plumber, Hydrojetting, Drain Cleaning, and Tankless Water Heater Repair in La Puente, CA5.0★ (92)9 mi
Jose Cruz Plumbing Heating Electrical5.0★ (2)6 mi
Leo Plumbing Services5.0★ (2)7 mi
Lighthart Co3.0★ (2)9 mi
Los Plumbers Inc3.0★ (2)7 mi
Mora Rooter5.0★ (2)8 mi
Pershing Plumbing - Pasadena Plumbing Company5.0★ (2)5 mi
Pre Cast Drain Box5.0★ (2)2 mi
Showtime-Vince Ruiz Plumbing4.5★ (2)11 mi
Tankless Water heater Repair & Plumbing5.0★ (2)5 mi
The Cauldron Water Heaters5.0★ (2)10 mi
The Sewer Company4.9★ (215)3 mi
Victor’s Plumber5.0★ (2)11 mi

How much do plumbers cost in San Marino?

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

How much do plumbers cost in San Marino?
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 San Marino plumbers

We scored 1,744 San Marino 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 San Marino 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 San Marino: frequently asked questions

Who is the best plumber in San Marino?

By CR Score, the highest-ranked plumber in San Marino, CA is Merry Plumbing with a CR Score of 94/100. It has 5.0★ from 652 Google reviews. It is open 24/7. Western Rooter & Plumbing (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 1,744 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in San Marino?

ContractorsRanked ranks 1,744 plumbers serving San Marino, CA. 1 of them is based in San Marino; 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 San Marino are open 24/7?

909 ranked plumbers in San Marino post 24/7 hours. The highest-ranked are Merry Plumbing (#1), Western Rooter & Plumbing (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in San Marino work on weekends?

1,435 of 1,744 ranked plumbers post Saturday hours and 1,154 post Sunday hours. The highest-ranked open Saturdays are Merry Plumbing (#1), Western Rooter & Plumbing (#2) and Roto-Rooter Plumbing & Water Cleanup (#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 San Marino?

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

What Google rating do San Marino plumbers have?

The median Google rating among 1,744 rated plumbers in San Marino is 4.9★, with a median of 19 reviews. Barker and Sons Plumbing & Rooter has the most, 3,896 reviews, and ranks #29. 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 San Marino

  1. October 2026: CR Scores recalculated for 1,744 plumbers serving San Marino.
  2. October 2026: 18 duplicate listings merged.

More plumbers and San Marino pages

Other trades in San Marino