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ContractorsRanked

Best Plumbers in Fairfax, CA (2026)

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

The short answer

  1. 1

    Best overall in Fairfax: Marin Roto-Rooter, CR Score 92/100; 4.9★ from 1,033 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Discount Plumbing Rooter Services, posts 24/7 hours; ranked #2 of 387.

  3. 37

    Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 387 ranked; ranked #37.

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

387 Fairfax plumbers are ranked here by CR Score, from 8 published factors. 119 are open 24/7, 222 open Saturdays and 156 open Sundays, based on posted hours. The median Google rating is 4.9★ across 387 rated businesses.

Top 10 plumbers in Fairfax at a glance

Top 10 plumbers in Fairfax at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Marin Roto-Rooter924.9★ (1,033)Novato, 9 mi away24/7Overall
2Discount Plumbing Rooter Services904.9★ (2,670)Daly City, 22 mi away24/7Emergencies
3EO Plumbing Service904.9★ (171)Albany, 7 mi away24/7—
4Advanced Plumbing & Drain904.9★ (666)San Francisco, 16 mi away24/7—
5Jacob & Sons Plumbing894.9★ (75)San Anselmo, 2 mi away24/7—
6Local Plumbing895.0★ (87)San Rafael, 6 mi away24/7—
7Discount Plumbing San Francisco895.0★ (465)San Francisco, 18 mi away24/7—
8Fast Water Heater Company884.9★ (1,240)Richmond, 13 mi awaySat · Sun · Evenings—
9Benjamin Franklin Plumbing - Novato884.8★ (791)Novato, 7 mi awaySat · Sun · Evenings—
10Roto-Rooter884.9★ (391)San Francisco, 19 mi away24/7—

The 387 best plumbers in Fairfax, 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 Fairfax

    #1 Marin Roto-Rooter

    Based in Novato, 9 mi away

    92/100CR Score

    Ranked #1 because of its Google rating and availability: 4.9★ from 1,033 Google reviews, open 24/7.

    • 4.9★ from 1,033 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    885 Olive Ave Suite D, Novato, CA 94945
    View profile for Marin Roto-Rooter(415) 898-2700

  6. #6 Local Plumbing

    Based in San Rafael, 6 mi away

    89/100CR Score

    Ranked #6 because of its Google rating and availability: 5.0★ from 87 Google reviews, open 24/7.

    • 5.0★ from 87 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1221 Andersen Dr Unit M, San Rafael, CA 94901
    View profile for Local Plumbing(415) 323-5140

  10. #10 Roto-Rooter

    Based in San Francisco, 19 mi away

    88/100CR Score

    Ranked #10 because of its Google rating and availability: 4.9★ from 391 Google reviews, open 24/7.

    • 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

  14. #14 SplashFix Plumbing

    Based in South San Francisco, 24 mi away

    87/100CR Score

    Ranked #14 because of its Google rating and availability: 5.0★ from 375 Google reviews, open 24/7.

    • 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

  16. #16 Ongaro & Sons

    Based in San Anselmo, 2 mi away

    87/100CR Score

    Ranked #16 because of its Google rating and availability: 4.9★ from 762 Google reviews, open 24/7.

    • 4.9★ from 762 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    11 Ross Ave, San Anselmo, CA 94960
    View profile for Ongaro & Sons(415) 523-3755

  18. #18 Roto-Rooter

    Based in Daly City, 24 mi away

    87/100CR Score

    Ranked #18 because of its Google rating and availability: 4.9★ from 407 Google reviews, open 24/7.

    • 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

  21. #21 Isackson Plumbing

    Based in San Francisco, 16 mi away

    86/100CR Score

    Ranked #21 because of its Google rating and availability: 5.0★ from 74 Google reviews, open 24/7.

    • 5.0★ from 74 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3149 California St, San Francisco, CA 94115
    View profile for Isackson Plumbing(415) 406-3511

  24. #24 Genteel Plumbers

    Based in San Francisco, 21 mi away

    86/100CR Score

    Ranked #24 because of its Google rating and availability: 4.8★ from 345 Google reviews, open 24/7.

    • 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

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

plumbers in Fairfax, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26O'Grady Plumbing864.9★ (173)20 mi
27Pipe Spy, Inc.864.9★ (182)20 mi
28The Plumbing Two864.9★ (57)13 mi
29Big Blue Plumbing864.7★ (575)22 mi
30Petersen Plumbing Services864.5★ (63)7 mi
31Fast Response Plumbing & Rooter864.9★ (520)16 mi
32GTO. Plumbing and rooter864.9★ (59)14 mi
33Heise's Plumbing864.9★ (1,454)20 mi
34Local Plumbing865.0★ (211)11 mi
35PrimeFlow Plumbing San Pablo865.0★ (39)13 mi
36John Gleason Plumbing, Inc865.0★ (13)6 mi
37Albert Nahman Plumbing, Heating, and Cooling854.7★ (3,311)20 mi
38Roto-Rooter Plumbing & Water Cleanup854.8★ (2,560)21 mi
39Cabrillo Plumbing, Heating & Air854.9★ (966)20 mi
40Hydro Plumbing & Rooter855.0★ (67)20 mi
41AR Plumbing Inc855.0★ (8)5 mi
42Bay Ridge Plumbing INC.855.0★ (6)3 mi
43Nelson Family Plumbing & Water Heaters854.7★ (113)17 mi
44Kelly Plumbing855.0★ (35)16 mi
45Wilson's Plumbing855.0★ (3)In Fairfax
46Cal-Delta Plumbing855.0★ (20)12 mi
47Big Smile Plumbing855.0★ (91)24 mi
48Elite Plumbing Services844.9★ (123)24 mi
49Works Plumbing Repair & Drain Cleaning844.6★ (99)16 mi
50Kenneth Asire Plumbing844.9★ (432)18 mi

Also serving Fairfax

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 Fairfax
BusinessGoogle ratingDistance
ABC Maintenance and Handyman Services5.0★ (2)17 mi
All Plumbing5.0★ (2)19 mi
Bay Area Plumbing Inc3.0★ (2)8 mi
Big Brothers Plumbing Inc5.0★ (150)24 mi
Chosen Rooter & Plumbing Inc.4.8★ (297)16 mi
Desired Plumbing, Inc.5.0★ (2)19 mi
Erwyn's Plumbing Inc5.0★ (2)14 mi
Flow Form Plumbing5.0★ (2)19 mi
GAC Plumbing Company5.0★ (2)20 mi
JIMENEZ PLUMBING MARIN5.0★ (1)In Fairfax
Marin Heating and Air5.0★ (17)In Fairfax
Mr Rescue Plumbing & DrainsIn Fairfax
One Step Plumbing5.0★ (2)19 mi
Pacific Plumbing3.0★ (2)17 mi
Performance Plumbing5.0★ (2)19 mi
Precision San Francisco Plumbing5.0★ (32)17 mi
Repipe Specialists of the Bay Area4.5★ (64)14 mi
Rising Design & Construction3.0★ (2)7 mi
Rooter Bong5.0★ (2)20 mi
Ros Plumbing5.0★ (2)20 mi

How much do plumbers cost in Fairfax?

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

How much do plumbers cost in Fairfax?
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 Fairfax plumbers

We scored 387 Fairfax 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 Fairfax 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 Fairfax: frequently asked questions

Who is the best plumber in Fairfax?

By CR Score, the highest-ranked plumber in Fairfax, CA is Marin Roto-Rooter with a CR Score of 92/100. It has 4.9★ from 1,033 Google reviews. It is open 24/7. Discount Plumbing Rooter Services (#2) and EO Plumbing Service (#3) follow. We ranked 387 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Fairfax?

ContractorsRanked ranks 387 plumbers serving Fairfax, CA. 1 of them is based in Fairfax; 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 Fairfax are open 24/7?

119 ranked plumbers in Fairfax post 24/7 hours. The highest-ranked are Marin Roto-Rooter (#1), Discount Plumbing Rooter Services (#2) and EO Plumbing Service (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Fairfax work on weekends?

222 of 387 ranked plumbers post Saturday hours and 156 post Sunday hours. The highest-ranked open Saturdays are Marin Roto-Rooter (#1), Discount Plumbing Rooter Services (#2) and EO Plumbing Service (#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 Fairfax?

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

What Google rating do Fairfax plumbers have?

The median Google rating among 387 rated plumbers in Fairfax is 4.9★, with a median of 15 reviews. Albert Nahman Plumbing, Heating, and Cooling has the most, 3,311 reviews, and ranks #37. 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 Fairfax

  1. October 2026: CR Scores recalculated for 387 plumbers serving Fairfax.
  2. October 2026: 1 duplicate listing merged.

More plumbers and Fairfax pages

Other trades in Fairfax