65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,314 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,314 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1011 American St, San Carlos, CA 94070
Best Plumbers in San Mateo, CA (2026)
616 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Mateo: Handy Plumbing Man, LLC, CR Score 65/100; 4.9★ from 1,314 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Discount Plumbing Rooter Services, posts 24/7 hours; ranked #2 of 616.
- 2
Most-reviewed: Discount Plumbing Rooter Services, 2,670 Google reviews at 4.9★, the most of 616 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
616 San Mateo plumbers are ranked here by CR Score, from ten published factors. 236 are open 24/7, 448 open Saturdays and 341 open Sundays, based on posted hours. The median Google rating is 4.9★ across 616 rated businesses.
Top 10 plumbers in San Mateo at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Handy Plumbing Man, LLC | 65 | 4.9★ (1,314) | San Carlos, 6 mi away | 24/7 | Overall |
| 2 | Discount Plumbing Rooter Services | 65 | 4.9★ (2,670) | Daly City, 11 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Wizard Plumbing and Drain | 65 | 4.8★ (1,648) | San Mateo | Sat · Sun · Evenings | — |
| 4 | Caccia Home Services | 65 | 4.9★ (1,910) | Burlingame, 4 mi away | Sat · Sun · Evenings | — |
| 5 | Bell Plumbing | 64 | 4.9★ (658) | San Carlos, 5 mi away | 24/7 | — |
| 6 | Bayshore Plumbers | 64 | 4.9★ (880) | Redwood City, 9 mi away | 24/7 | — |
| 7 | Water Heater Specialists | 64 | 4.9★ (350) | Foster City, 3 mi away | 24/7 | — |
| 8 | Mr. Rooter Plumbing of The Oakland-Berkeley Area | 63 | 4.9★ (1,283) | Oakland, 14 mi away | 24/7 | — |
| 9 | Water Heaters Only, Inc | 63 | 5.0★ (402) | Redwood City, 9 mi away | 24/7 | — |
| 10 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.8★ (1,239) | East Palo Alto, 12 mi away | 24/7 | — |
The 616 best plumbers in San Mateo, 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 Daly City, 11 mi away
65/100CR ScoreRanked #2 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
Based in San Mateo
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 1,648 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,648 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat–Sun 8 AM–4 PM
- Address
- 2300 Palm Ave, San Mateo, CA 94403
Based in Burlingame, 4 mi away
65/100CR ScoreRanked #4 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
Based in San Carlos, 5 mi away
64/100CR ScoreRanked #5 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
Based in Redwood City, 9 mi away
64/100CR ScoreRanked #6 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
Based in Foster City, 3 mi away
64/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 350 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 350 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1160 Chess Dr STE 1, Foster City, CA 94404
Based in Oakland, 14 mi away
63/100CR ScoreRanked #8 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 Redwood City, 9 mi away
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 402 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 402 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3520 Haven Ave Unit K, Redwood City, CA 94063
Based in East Palo Alto, 12 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 1,239 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,239 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 220 Demeter St, East Palo Alto, CA 94303
Based in South San Francisco, 9 mi away
63/100CR ScoreRanked #11 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 Millbrae, 6 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 200 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 200 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1043 Pinehurst Ct, Millbrae, CA 94030
#13 Roto-Rooter
Based in Daly City, 9 mi away
63/100CR ScoreRanked #13 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 Redwood City, 7 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 253 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 253 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 639 Bair Island Rd unit 605, Redwood City, CA 94063
Based in Pacifica, 11 mi away
62/100CR ScoreRanked #15 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 Hayward, 13 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 531 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 531 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2141 Commerce Pl, Hayward, CA 94545
Based in San Francisco, 14 mi away
62/100CR ScoreRanked #17 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 Burlingame, 2 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 106 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 106 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 263 Hatch Ln B, Burlingame, CA 94010
Based in San Francisco, 12 mi away
62/100CR ScoreRanked #19 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 Mateo
62/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 947 Google reviews.
- 4.8★ from 947 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1670 S Amphlett Blvd Ste 70-21426, San Mateo, CA 94402
#21 Roto-Rooter
Based in San Francisco, 14 mi away
61/100CR ScoreRanked #21 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 San Francisco, 17 mi away
61/100CR ScoreRanked #22 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 San Mateo
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 93 Google reviews, listed on Google as “Plumber”.
- 4.6★ from 93 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3151 La Selva St Suite 3, San Mateo, CA 94403
Based in Dublin, 2 mi away
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in San Ramon, 24 mi away
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 1,948 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,948 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2415 San Ramon Valley Blvd UNIT 312, San Ramon, CA 94583
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 616 ranked plumbers here; the rest are on their profiles.
Also serving San Mateo
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 |
|---|---|---|
| All Flow Plumbing | In San Mateo | |
| Bay Water Plumbing & Water Systems | 5.0★ (1) | In San Mateo |
| Bayhill Heat & Air, Inc. | 4.0★ (19) | In San Mateo |
| Buljan Plumbers | In San Mateo | |
| City Wide Pro Plumbing | 5.0★ (2) | 10 mi |
| CPR Plumbing | 5.0★ (2) | 6 mi |
| Fast Response Plumbing & Rooter | 5.0★ (1) | In San Mateo |
| Gafi Builders and Design, Inc. | 5.0★ (2) | 11 mi |
| In & Out Plumbing and Construction | 4.6★ (119) | 7 mi |
| Kratzer Plumbing Abco Rooter | 5.0★ (2) | In San Mateo |
| NorCal Natural Habitats | 5.0★ (2) | 9 mi |
| Oro Pro Plumbing Inc. | 4.7★ (84) | 7 mi |
| Pumps & Works | 5.0★ (2) | 8 mi |
| Ron Williams Plumbing & Heating | 4.0★ (2) | 7 mi |
| Roto-Rooter Plumbing & Water Cleanup | 4.8★ (781) | 22 mi |
| San Mateo Handyman | In San Mateo | |
| Sand Hill Plumbing | In San Mateo | |
| Smelly Mels Plumbing, Inc. | 3.0★ (1) | In San Mateo |
| VRG Plumbing | 3.0★ (2) | 9 mi |
| Wing Cary Plumbing & Fire Protection | In San Mateo |
How much do plumbers cost in San Mateo?
National price ranges in USD, not adjusted for San Mateo. 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 San Mateo plumbers
We scored 616 San Mateo 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 San Mateo 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 San Mateo: frequently asked questions
Who is the best plumber in San Mateo?
By CR Score, the highest-ranked plumber in San Mateo, CA is Handy Plumbing Man, LLC with a CR Score of 65/100. It has 4.9★ from 1,314 Google reviews. It is open 24/7. Discount Plumbing Rooter Services (#2) and Wizard Plumbing and Drain (#3) follow. We ranked 616 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in San Mateo?
ContractorsRanked ranks 616 plumbers serving San Mateo, CA. 5 of them are based in San Mateo; 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 Mateo are open 24/7?
236 ranked plumbers in San Mateo post 24/7 hours. The highest-ranked are Handy Plumbing Man, LLC (#1), Discount Plumbing Rooter Services (#2) and Bell Plumbing (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in San Mateo work on weekends?
448 of 616 ranked plumbers post Saturday hours and 341 post Sunday hours. The highest-ranked open Saturdays are Handy Plumbing Man, LLC (#1), Discount Plumbing Rooter Services (#2) and Wizard Plumbing and 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 San Mateo?
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 Mateo. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Mateo plumbers have?
The median Google rating among 616 rated plumbers in San Mateo is 4.9★, with a median of 21 reviews. Discount Plumbing Rooter Services has the most, 2,670 reviews, and ranks #2. 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 San Mateo
- October 2026: CR Scores recalculated for 616 plumbers serving San Mateo.
- October 2026: 10 duplicate listings merged.
More plumbers and San Mateo pages
Plumbers near San Mateo
- Plumbers in Burlingame, CA576 ranked
- Plumbers in Foster City, CA699 ranked
- Plumbers in Hillsborough, CA564 ranked
- Plumbers in Belmont, CA670 ranked
- Plumbers in Millbrae, CA563 ranked
- Plumbers in Redwood Shores, CA694 ranked
- Plumbers in San Carlos, CA674 ranked
- Plumbers in San Bruno, CA575 ranked
- Plumbers in Redwood City, CA686 ranked
- Plumbers in South San Francisco, CA592 ranked
Other trades in San Mateo
- Roofers in San Mateo718 ranked
- Electricians in San Mateo454 ranked
- HVAC contractors in San Mateo463 ranked
- General contractors in San Mateo888 ranked
- Painters in San Mateo204 ranked
- Landscapers in San Mateo149 ranked
- Handymen in San Mateo82 ranked
- Kitchen remodelers in San Mateo433 ranked
- Bathroom remodelers in San Mateo398 ranked
- Flooring contractors in San Mateo266 ranked
- Tile installers in San Mateo55 ranked
- Drywall contractors in San Mateo25 ranked
- Concrete contractors in San Mateo206 ranked
- Fence contractors in San Mateo95 ranked
- Deck builders in San Mateo107 ranked
- Siding contractors in San Mateo92 ranked
- Window installers in San Mateo290 ranked
- Gutter installers in San Mateo153 ranked
- Insulation contractors in San Mateo98 ranked
- Solar installers in San Mateo274 ranked
- Garage door repair companies in San Mateo219 ranked
- Foundation repair companies in San Mateo123 ranked
- Tree services in San Mateo200 ranked
- Masonry contractors in San Mateo103 ranked
- Water damage restoration companies in San Mateo386 ranked
- Home builders in San Mateo458 ranked
- Demolition contractors in San Mateo83 ranked
- All contractors in San Mateo