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ContractorsRanked

Best Plumbers in Cotati, CA (2026)

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

The short answer

  1. 1

    Best overall in Cotati: Mr. Rooter Plumbing of Sonoma County, CR Score 65/100; 4.9★ from 923 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 227.

  3. 42

    Most-reviewed: Moore Home Heating Cooling & Plumbing Services, 1,764 Google reviews at 4.7★, the most of 227 ranked; ranked #42.

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

227 Cotati plumbers are ranked here by CR Score, from ten published factors. 58 are open 24/7, 129 open Saturdays and 92 open Sundays, based on posted hours. The median Google rating is 5.0★ across 227 rated businesses.

Top 10 plumbers in Cotati at a glance

Top 10 plumbers in Cotati at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Mr. Rooter Plumbing of Sonoma County654.9★ (923)Santa Rosa, 8 mi away24/7Overall
2Roto-Rooter Plumbing & Water Cleanup654.7★ (393)Cotati24/7Emergencies
3Elite Plumbing Services644.9★ (123)Cotati24/7—
4Rooter Hero Plumbing & Air of Santa Rosa644.9★ (401)Rohnert Park, 2 mi awaySat · Sun · Evenings—
5Marin Roto-Rooter634.9★ (1,033)Novato, 17 mi away24/7—
6Rooter Man Sonoma County634.9★ (570)Santa Rosa, 7 mi awaySat · Sun—
7Redwood Sewer & Drain Services635.0★ (163)Larkfield-Wikiup, 7 mi away24/7—
8KC Home Services Plumbing, Heating & AC Repair624.9★ (827)Santa Rosa, 6 mi away24/7—
9West Coast Plumbing624.9★ (90)Santa Rosa, 6 mi away24/7—
10Mr Plumber614.9★ (30)Cotati24/7—

The 227 best plumbers in Cotati, 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.

  5. #5 Marin Roto-Rooter

    Based in Novato, 17 mi away

    63/100CR Score

    Ranked #5 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
    View profile for Marin Roto-Rooter(415) 898-2700

  9. #9 West Coast Plumbing

    Based in Santa Rosa, 6 mi away

    62/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 90 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    374 Yolanda Ave Suite D, Santa Rosa, CA 95404
    View profile for West Coast Plumbing(707) 750-9900

  10. #10 Mr Plumber

    Based in Cotati

    61/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 30 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Mr Plumber(707) 695-0016

  15. #15 Small Jobs Plumbing, Inc.

    Based in Rohnert Park, 2 mi away

    60/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.9★ from 181 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 181 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat 9 AM–2 PM · Sun closed
    Address
    5625 State Farm Dr unit 45, Rohnert Park, CA 94928
    View profile for Small Jobs Plumbing, Inc.(707) 241-4154

  17. #17 Northbound Plumbing

    Based in Santa Rosa, 3 mi away

    60/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 23 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5989 Petaluma Hill Rd, Santa Rosa, CA 95404
    View profile for Northbound Plumbing(707) 806-6991

  20. #20 Curoso Plumbing Inc.

    Based in Santa Rosa, 10 mi away

    60/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 281 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 281 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat 7 AM–5 PM · Sun closed
    Address
    1925 Fulton Rd, Santa Rosa, CA 95403
    View profile for Curoso Plumbing Inc.(707) 625-5309

  22. #22 Rock Solid Drains

    Based in Santa Rosa, 6 mi away

    60/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 130 Google reviews
    Hours
    Mon–Fri 7 AM–9 PM · Sat 8 AM–5 PM · Sun closed
    Address
    468 Yolanda Ave Ste 301, Santa Rosa, CA 95404
    View profile for Rock Solid Drains(707) 889-8191

  25. Based in Rohnert Park, 2 mi away

    59/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 70 Google reviews
    Hours
    Mon–Sat 7 AM–7 PM · Sun closed
    Address
    5880 Commerce Blvd Suite 101, Rohnert Park, CA 94928
    View profile for Popular Plumbing(707) 806-0911

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

plumbers in Cotati, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Ongaro & Sons594.9★ (1,222)8 mi
27707 Plumbers, Inc. & Electric595.0★ (192)10 mi
28Broadhead Construction595.0★ (19)In Cotati
29Big Island Plumbing595.0★ (45)13 mi
30GAC Plumbing Company594.9★ (23)8 mi
31All About Plumbing595.0★ (13)5 mi
32Petersen Plumbing Services594.5★ (40)8 mi
33Same Day Heating, Cooling, Plumbing594.9★ (531)15 mi
34Christopher Robin's Plumbing595.0★ (99)8 mi
35Ongaro & Sons584.9★ (538)6 mi
36American Sewer & Drain585.0★ (22)10 mi
37Sewer Line Survey585.0★ (18)8 mi
38Monkey Wrench Plumbing584.8★ (16)8 mi
39Santa Rosa Plumbing585.0★ (4)In Cotati
40Finetti Plumbing & Backflow585.0★ (13)8 mi
41Owens & Sons Plumbing584.6★ (55)14 mi
42Moore Home Heating Cooling & Plumbing Services584.7★ (1,764)9 mi
43Community Plumbing Services585.0★ (72)8 mi
44Fast Local Plumbers584.7★ (83)18 mi
45Flow Elite Plumbing & Hydronic Heating585.0★ (21)13 mi
46Nor Cal Leaks583.4★ (5)In Cotati
47Mike’s Plumbing & Rooter Service575.0★ (84)17 mi
48Super Service Plumbing575.0★ (113)6 mi
49Bellows Plumbing, Heating, Cooling & Electrical574.9★ (480)20 mi
50Frati Plumbing575.0★ (47)In Cotati

Also serving Cotati

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 Cotati
BusinessGoogle ratingDistance
Bragg Home Services4.9★ (486)11 mi
Brush Creek Plumbing4.9★ (10)15 mi
Clear Wood Plumbing LLC5.0★ (6)7 mi
Desired Plumbing, Inc.5.0★ (2)7 mi
Elevated Comfort4.9★ (949)In Cotati
Flowright Plumbing5.0★ (22)17 mi
Henry Mechanical5.0★ (866)15 mi
Herrera Plumbing LLC5.0★ (5)15 mi
Hulbert Heating & Air Conditioning Inc5.0★ (54)In Cotati
Newline Plumbing, LLC5.0★ (7)18 mi
Nor Cal leaks5.0★ (7)8 mi
Regina Plumbing5.0★ (2)22 mi
Remons Main Sewer Camera Services & Drain Clearing5.0★ (20)9 mi
Rich your Local Handyman Services5.0★ (4)10 mi
Scott Cramer Plumbing5.0★ (2)5 mi
Scott Silva Plumbing5.0★ (1)In Cotati
Taurian Construction5.0★ (7)12 mi
The Cardenas Plumbing5.0★ (7)19 mi
Todd Norris Plumbing & Heating5.0★ (2)21 mi
Trimyc Mechanical5.0★ (1)In Cotati

How much do plumbers cost in Cotati?

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

How much do plumbers cost in Cotati?
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 Cotati plumbers

We scored 227 Cotati 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 Cotati 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 Cotati: frequently asked questions

Who is the best plumber in Cotati?

By CR Score, the highest-ranked plumber in Cotati, CA is Mr. Rooter Plumbing of Sonoma County with a CR Score of 65/100. It has 4.9★ from 923 Google reviews. It is open 24/7. Roto-Rooter Plumbing & Water Cleanup (#2) and Elite Plumbing Services (#3) follow. We ranked 227 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in Cotati?

ContractorsRanked ranks 227 plumbers serving Cotati, CA. 10 of them are based in Cotati; 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 Cotati are open 24/7?

58 ranked plumbers in Cotati post 24/7 hours. The highest-ranked are Mr. Rooter Plumbing of Sonoma County (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Elite Plumbing Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Cotati work on weekends?

129 of 227 ranked plumbers post Saturday hours and 92 post Sunday hours. The highest-ranked open Saturdays are Mr. Rooter Plumbing of Sonoma County (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Elite Plumbing 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 Cotati?

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

What Google rating do Cotati plumbers have?

The median Google rating among 227 rated plumbers in Cotati is 5.0★, with a median of 15 reviews. Moore Home Heating Cooling & Plumbing Services has the most, 1,764 reviews, and ranks #42. 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 Cotati

  1. October 2026: CR Scores recalculated for 227 plumbers serving Cotati.
  2. October 2026: 1 duplicate listing merged.

More plumbers and Cotati pages

Other trades in Cotati