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Best Plumbers in South San Francisco, CA (2026)

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

The short answer

  1. 1

    Best overall in South San Francisco: Discount Plumbing Rooter Services, CR Score 67/100; 4.9★ from 2,670 Google reviews; open 24/7.

  2. 2

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

  3. 46

    Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 2,560 Google reviews at 4.8★, the most of 592 ranked after Discount Plumbing Rooter Services; ranked #46.

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

592 South San Francisco plumbers are ranked here by CR Score, from ten published factors. 216 are open 24/7, 407 open Saturdays and 300 open Sundays, based on posted hours. The median Google rating is 4.9★ across 592 rated businesses.

Top 10 plumbers in South San Francisco at a glance

Top 10 plumbers in South San Francisco at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Discount Plumbing Rooter Services674.9★ (2,670)Daly City, 4 mi away24/7Overall
2SplashFix Plumbing655.0★ (375)South San Francisco24/7Emergencies
3Caccia Home Services654.9★ (1,910)Burlingame, 4 mi awaySat · Sun · Evenings—
4Roto-Rooter644.9★ (407)Daly City, 2 mi away24/7—
5Discount Plumbing San Francisco645.0★ (465)San Francisco, 7 mi away24/7—
6Works Plumbing Repair & Drain Cleaning644.8★ (631)Pacifica, 5 mi away24/7—
724/7 Rooter & Plumbing644.7★ (848)San Francisco, 5 mi away24/7—
8Mr. Rooter Plumbing of The Oakland-Berkeley Area634.9★ (1,283)Oakland, 13 mi away24/7—
9Dr. Drain Plumbing and Rooter635.0★ (200)Millbrae, 4 mi away24/7—
10Advanced Plumbing & Drain634.9★ (666)San Francisco, 10 mi away24/7—

The 592 best plumbers in South San Francisco, 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 SplashFix Plumbing

    Based in South San Francisco

    65/100CR Score

    Ranked #2 because of its Google rating and trade focus: 5.0★ from 375 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 375 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    387 Newman Dr, South San Francisco, CA 94080
    View profile for SplashFix Plumbing(415) 223-5389

  3. #3 Caccia Home Services

    Based in Burlingame, 4 mi away

    65/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,910 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 1,910 Google reviews
    Hours
    Mon–Tue 8 AM–5 PM · Wed–Fri 8 AM–9 PM · Sat–Sun 10 AM–6 PM
    Address
    1660 Gilbreth Rd, Burlingame, CA 94010
    View profile for Caccia Home Services(650) 342-5363

  4. #4 Roto-Rooter

    Based in Daly City, 2 mi away

    64/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 407 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 407 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3840 Bayshore Blvd, Brisbane, CA 94005
    View profile for Roto-Rooter(415) 480-7073

  12. #12 Roto-Rooter

    Based in San Francisco, 6 mi away

    63/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.9★ from 391 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 391 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    60 29th St #428, San Francisco, CA 94110
    View profile for Roto-Rooter(415) 964-3302

  13. #13 Whistle Plumbing

    Based in Daly City, 3 mi away

    63/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 365 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 365 Google reviews
    Hours
    Mon–Sun 6 AM–11 PM
    Address
    158 Dennis Dr, Daly City, CA 94015
    View profile for Whistle Plumbing(650) 664-3139

  15. #15 Genteel Plumbers

    Based in San Francisco, 5 mi away

    63/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.8★ from 345 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 345 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1181 Revere Ave, San Francisco, CA 94124
    View profile for Genteel Plumbers(833) 436-8335

  18. #18 Bell Plumbing

    Based in San Carlos, 13 mi away

    62/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.9★ from 658 Google reviews, listed on Google as “Plumber”.

    • 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

  21. #21 Bayshore Plumbers

    Based in Redwood City, 16 mi away

    62/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.9★ from 880 Google reviews, listed on Google as “Plumber”.

    • 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

  22. #22 O'Grady Plumbing

    Based in San Francisco, 6 mi away

    62/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.9★ from 173 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 173 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1610 Evans Ave, San Francisco, CA 94124
    View profile for O'Grady Plumbing(415) 985-0155

  24. #24 Heise's Plumbing

    Based in San Francisco, 5 mi away

    62/100CR Score

    Ranked #24 because of its Google rating and review volume: 4.9★ from 1,454 Google reviews.

    • 4.9★ from 1,454 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    260 Ocean Ave, San Francisco, CA 94112
    View profile for Heise's Plumbing(415) 333-0704

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

plumbers in South San Francisco, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Big Blue Plumbing614.7★ (575)11 mi
27Fast Response Plumbing & Rooter614.9★ (520)9 mi
28Water Heaters Only, Inc614.9★ (531)16 mi
29Roto-Rooter Plumbing & Water Cleanup615.0★ (191)12 mi
30Water Heaters Only, Inc615.0★ (402)17 mi
31Roto-Rooter Plumbing & Water Cleanup614.8★ (1,239)20 mi
32Plumbing Care Inc614.9★ (1,948)25 mi
33Cabrillo Plumbing, Heating & Air614.9★ (966)6 mi
34VanGo Rooter614.8★ (112)In South San Francisco
35ASAP Plumbing Pros615.0★ (251)16 mi
36Hydro Plumbing & Rooter615.0★ (67)6 mi
37Plumbing & Rooter Service614.9★ (61)4 mi
38Works Plumbing Repair & Drain Cleaning614.8★ (106)6 mi
39Magic Plumbing Heating & Cooling614.9★ (1,876)5 mi
40Precision Flow Plumbing604.8★ (68)5 mi
41Shoreway Plumbing, Inc.604.9★ (253)15 mi
42Trinity Liquid Waste Services604.9★ (62)6 mi
43Isackson Plumbing605.0★ (74)9 mi
44Pipe Spy, Inc.604.9★ (182)13 mi
45X-Ray Plumbing And Drain605.0★ (33)4 mi
46Roto-Rooter Plumbing & Water Cleanup604.8★ (2,560)13 mi
47R & L Plumbing604.7★ (211)5 mi
48JK Plumbing604.9★ (110)5 mi
49George Salet Plumbing, Inc.605.0★ (486)2 mi
50Fast Water Heater Company604.9★ (1,240)20 mi

Also serving South San Francisco

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 South San Francisco
BusinessGoogle ratingDistance
ABC Maintenance and Handyman Services5.0★ (2)9 mi
All Pro Plumbing and Rooter4.6★ (93)10 mi
AS PLUS PLUMBING CORP5.0★ (29)5 mi
ASAP Plumbing & Water HeaterIn South San Francisco
Ayala’s Plumbing Solutions5.0★ (2)5 mi
Bay Plumbing5.0★ (2)13 mi
Ben Jacobs Plumbing5.0★ (2)5 mi
Chosen Rooter & Plumbing Inc.4.8★ (297)10 mi
City Wide Pro Plumbing5.0★ (2)3 mi
dpw, inc.In South San Francisco
Economy Plumbing5.0★ (24)4 mi
Kratzer Plumbing Abco Rooter5.0★ (2)10 mi
Plumbing 1 builders5.0★ (2)7 mi
Pros Plumber San Francisco5.0★ (32)5 mi
Rooter Bong5.0★ (2)5 mi
Ros Plumbing5.0★ (2)6 mi
Roto-Rooter Plumbing & Water Cleanup4.8★ (229)16 mi
Smiling Viking Plumbing5.0★ (2)11 mi
Total Works General Contractors5.0★ (2)13 mi
VRG Plumbing3.0★ (2)6 mi

How much do plumbers cost in South San Francisco?

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

How much do plumbers cost in South San Francisco?
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 South San Francisco plumbers

We scored 592 South San Francisco 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 South San Francisco 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 South San Francisco: frequently asked questions

Who is the best plumber in South San Francisco?

By CR Score, the highest-ranked plumber in South San Francisco, CA is Discount Plumbing Rooter Services with a CR Score of 67/100. It has 4.9★ from 2,670 Google reviews. It is open 24/7. SplashFix Plumbing (#2) and Caccia Home Services (#3) follow. We ranked 592 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in South San Francisco?

ContractorsRanked ranks 592 plumbers serving South San Francisco, CA. 5 of them are based in South San Francisco; 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 South San Francisco are open 24/7?

216 ranked plumbers in South San Francisco post 24/7 hours. The highest-ranked are Discount Plumbing Rooter Services (#1), SplashFix Plumbing (#2) and Roto-Rooter (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in South San Francisco work on weekends?

407 of 592 ranked plumbers post Saturday hours and 300 post Sunday hours. The highest-ranked open Saturdays are Discount Plumbing Rooter Services (#1), SplashFix Plumbing (#2) and Caccia Home Services (#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 South San Francisco?

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

What Google rating do South San Francisco plumbers have?

The median Google rating among 592 rated plumbers in South San Francisco is 4.9★, with a median of 20 reviews. Discount Plumbing Rooter Services has the most, 2,670 reviews, and ranks #1. 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 South San Francisco

  1. October 2026: CR Scores recalculated for 592 plumbers serving South San Francisco.
  2. October 2026: 7 duplicate listings merged.

More plumbers and South San Francisco pages

Other trades in South San Francisco