64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 2,670 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 2,670 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 570 Sylvan St, Daly City, CA 94014
Best Plumbers in Mill Valley, CA (2026)
431 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Mill Valley: Discount Plumbing Rooter Services, CR Score 64/100; 4.9★ from 2,670 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): EO Plumbing Service, posts 24/7 hours; ranked #2 of 431.
- 35
Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 431 ranked; ranked #35.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
431 Mill Valley plumbers are ranked here by CR Score, from ten published factors. 135 are open 24/7, 254 open Saturdays and 174 open Sundays, based on posted hours. The median Google rating is 4.9★ across 431 rated businesses.
Top 10 plumbers in Mill Valley at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Discount Plumbing Rooter Services | 64 | 4.9★ (2,670) | Daly City, 16 mi away | 24/7 | Overall |
| 2 | EO Plumbing Service | 63 | 4.9★ (171) | Albany, 1 mi away | 24/7 | Emergencies |
| 3 | Advanced Plumbing & Drain | 63 | 4.9★ (666) | San Francisco, 10 mi away | 24/7 | — |
| 4 | Marin Roto-Rooter | 63 | 4.9★ (1,033) | Novato, 14 mi away | 24/7 | — |
| 5 | Discount Plumbing San Francisco | 63 | 5.0★ (465) | San Francisco, 12 mi away | 24/7 | — |
| 6 | Fast Water Heater Company | 63 | 4.9★ (1,240) | Richmond, 10 mi away | Sat · Sun · Evenings | — |
| 7 | Local Plumbing | 62 | 5.0★ (87) | San Rafael, 4 mi away | 24/7 | — |
| 8 | Ace Plumbing & Rooter, Inc. | 62 | 4.9★ (931) | San Francisco, 12 mi away | Sat · Sun · Evenings | — |
| 9 | Roto-Rooter | 62 | 4.9★ (391) | San Francisco, 13 mi away | 24/7 | — |
| 10 | Sharky Plumbing 510 & Rooter LLC - Plumbing Service in Oakland Ca | 61 | 5.0★ (62) | Alameda, 3 mi away | 24/7 | — |
The 431 best plumbers in Mill Valley, 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.
Based in Albany, 1 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 171 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 171 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Francisco, 10 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 666 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 666 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3450 Sacramento St #204, San Francisco, CA 94118
Based in Novato, 14 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 1,033 Google reviews, listed on Google as “Plumber”.
- 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
Based in San Francisco, 12 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 465 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 465 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4321 24th St, San Francisco, CA 94114
Based in Richmond, 10 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 1,240 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,240 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–5 PM
- Address
- 1065 Hensley St, Richmond, CA 94801
Based in San Rafael, 4 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “Plumber”.
- 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
Based in San Francisco, 12 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 931 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 931 Google reviews
- Hours
- Mon–Sun 6 AM–10 PM
- Address
- 1090 Bryant St, San Francisco, CA 94103
#9 Roto-Rooter
Based in San Francisco, 13 mi away
62/100CR ScoreRanked #9 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
Based in Alameda, 3 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Francisco, 10 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 520 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 520 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 9 AM–5 PM
- Address
- 4444 Geary Blvd # 203, San Francisco, CA 94118
Based in Oakland, 22 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,283 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,283 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 50 Hegenberger Loop, Oakland, CA 94621
Based in San Francisco, 15 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 848 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 848 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1070 Quesada Ave, San Francisco, CA 94124
Based in San Anselmo, 5 mi away
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 75 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 75 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5 Belle Ave, San Anselmo, CA 94960
Based in Novato, 11 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 791 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 791 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 22 Digital Dr, Novato, CA 94949
Based in South San Francisco, 18 mi away
61/100CR ScoreRanked #16 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
Based in Mill Valley
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.5★ from 63 Google reviews, listed on Google as “Plumber”.
- 4.5★ from 63 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 751 E Blithedale Ave #1403, Mill Valley, CA 94942
#18 Roto-Rooter
Based in Daly City, 18 mi away
60/100CR ScoreRanked #18 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
Based in Pacifica, 19 mi away
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 631 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 631 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1137 Palmetto Ave, Pacifica, CA 94044
Based in Richmond, 11 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 127 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 127 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1000 13th St, Richmond, CA 94801
#21 Genteel Plumbers
Based in San Francisco, 15 mi away
60/100CR ScoreRanked #21 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
Based in San Francisco, 14 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 261 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 261 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 540 Barneveld Ave # D, San Francisco, CA 94124
Based in San Francisco, 10 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 74 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3149 California St, San Francisco, CA 94115
#24 O'Grady Plumbing
Based in San Francisco, 14 mi away
60/100CR ScoreRanked #24 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
Based in Alameda, 17 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.7★ from 575 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 575 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 768 Stewart Ct, Alameda, CA 94501
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 431 ranked plumbers here; the rest are on their profiles.
Also serving Mill Valley
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.
| Business | Google rating | Distance |
|---|---|---|
| ABC Maintenance and Handyman Services | 5.0★ (2) | 10 mi |
| AR Plumbing Inc | 5.0★ (8) | 3 mi |
| Ayala’s Plumbing Solutions | 5.0★ (2) | 15 mi |
| Bay Area Plumbing Inc | 3.0★ (2) | 3 mi |
| Ben Jacobs Plumbing | 5.0★ (2) | 14 mi |
| Erwyn's Plumbing Inc | 5.0★ (2) | 12 mi |
| Fast Local Plumbers | 4.7★ (83) | 13 mi |
| Flow Form Plumbing | 5.0★ (2) | 15 mi |
| J&K Plumbing Pro's | In Mill Valley | |
| J&K Plumbing Services | In Mill Valley | |
| Ongaro & Sons | 4.9★ (762) | 5 mi |
| Performance Plumbing | 5.0★ (2) | 15 mi |
| Plumbing 1 builders | 5.0★ (2) | 15 mi |
| Plumbing Aaron Bernal Heights | 4.5★ (2) | 15 mi |
| Precision Flow Plumbing | 4.8★ (68) | 14 mi |
| Repipe Specialists of the Bay Area | 4.5★ (64) | 8 mi |
| Rising Design & Construction | 3.0★ (2) | 10 mi |
| Rooter Bong | 5.0★ (2) | 14 mi |
| Ros Plumbing | 5.0★ (2) | 14 mi |
| Zak Plumbing Co | In Mill Valley |
How much do plumbers cost in Mill Valley?
National price ranges in USD, not adjusted for Mill Valley. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | $882 | $1,348 | $1,826 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 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).
- Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
- Check that the status is active and the name matches the contract or truck.
- 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 Mill Valley plumbers
We scored 431 Mill Valley 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.
| Factor | Weight | Computed from | In Mill Valley data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Plumbers in Mill Valley: frequently asked questions
Who is the best plumber in Mill Valley?
By CR Score, the highest-ranked plumber in Mill Valley, CA is Discount Plumbing Rooter Services with a CR Score of 64/100. It has 4.9★ from 2,670 Google reviews. It is open 24/7. EO Plumbing Service (#2) and Advanced Plumbing & Drain (#3) follow. We ranked 431 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Mill Valley?
ContractorsRanked ranks 431 plumbers serving Mill Valley, CA. 2 of them are based in Mill Valley; 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 Mill Valley are open 24/7?
135 ranked plumbers in Mill Valley post 24/7 hours. The highest-ranked are Discount Plumbing Rooter Services (#1), EO Plumbing Service (#2) and Advanced Plumbing & Drain (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Mill Valley work on weekends?
254 of 431 ranked plumbers post Saturday hours and 174 post Sunday hours. The highest-ranked open Saturdays are Discount Plumbing Rooter Services (#1), EO Plumbing Service (#2) and Advanced Plumbing & Drain (#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 Mill Valley?
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 Mill Valley. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Mill Valley plumbers have?
The median Google rating among 431 rated plumbers in Mill Valley is 4.9★, with a median of 17 reviews. Albert Nahman Plumbing, Heating, and Cooling has the most, 3,311 reviews, and ranks #35. 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 Mill Valley
- October 2026: CR Scores recalculated for 431 plumbers serving Mill Valley.
- October 2026: 1 duplicate listing merged.
More plumbers and Mill Valley pages
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Other trades in Mill Valley
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- Siding contractors in Mill Valley85 ranked
- Window installers in Mill Valley248 ranked
- Gutter installers in Mill Valley100 ranked
- Insulation contractors in Mill Valley65 ranked
- Solar installers in Mill Valley229 ranked
- Garage door repair companies in Mill Valley126 ranked
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- Tree services in Mill Valley130 ranked
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