478 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Castaic: Payless Water Heaters & Plumbing, Inc., CR Score 66/100; 4.8★ from 1,762 Google reviews; open 24/7.
Best for emergencies (open 24/7): CastleWorks Home Services, posts 24/7 hours; ranked #2 of 478.
Most-reviewed: Dutton Plumbing, Cooling & Heating, 2,766 Google reviews at 4.7★, the most of 478 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
478 Castaic plumbers are ranked here by CR Score, from ten published factors. 243 are open 24/7, 387 open Saturdays and 305 open Sundays, based on posted hours. The median Google rating is 4.9★ across 478 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Payless Water Heaters & Plumbing, Inc. | 66 | 4.8★ (1,762) | Santa Clarita, 5 mi away | 24/7 | Overall |
| 2 | CastleWorks Home Services | 65 | 4.7★ (1,599) | Valencia, 4 mi away | 24/7 | Emergencies |
| 3 | Shellback Plumbing & Drain | 65 | 4.9★ (871) | Castaic | Sat · Sun · Evenings | — |
| 4 | Happy Flushin Plumbing | 63 | 5.0★ (1,365) | Encino, 19 mi away | 24/7 | — |
| 5 | Highsmith & Daughters Plumbing Inc | 63 | 4.9★ (866) | Malibu, 13 mi away | 24/7 | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.8★ (2,036) | Chatsworth, 16 mi away | 24/7 | — |
| 7 | Yochim Plumbing | 63 | 4.9★ (602) | Santa Clarita, 11 mi away | 24/7 | — |
| 8 | Rooter Man Plumbing | 63 | 4.8★ (1,341) | North Hills, 14 mi away | 24/7 | — |
| 9 | Dutton Plumbing, Cooling & Heating | 62 | 4.7★ (2,766) | Simi Valley, 17 mi away | 24/7 | Most reviews |
| 10 | Rooter Hero Plumbing & Air San Fernando Valley | 62 | 4.9★ (1,192) | Chatsworth, 17 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 1,762 Google reviews, listed on Google as “Plumber”.
Based in Valencia, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,599 Google reviews, listed on Google as “Plumber”.
Based in Castaic
Ranked #3 because of its Google rating and trade focus: 4.9★ from 871 Google reviews, listed on Google as “Plumber”.
Based in Encino, 19 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 1,365 Google reviews, listed on Google as “Plumber”.
Based in Malibu, 13 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 866 Google reviews, listed on Google as “Plumber”.
Based in Chatsworth, 16 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 2,036 Google reviews, listed on Google as “Plumber”.
Based in Santa Clarita, 11 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 602 Google reviews, listed on Google as “Plumber”.
Based in North Hills, 14 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 1,341 Google reviews, listed on Google as “Plumber”.
Based in Simi Valley, 17 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 2,766 Google reviews, listed on Google as “Plumber”.
Based in Chatsworth, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,192 Google reviews, listed on Google as “Plumber”.
Based in Castaic
Ranked #11 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Plumber”.
Based in San Fernando, 10 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 171 Google reviews, listed on Google as “Plumber”.
Based in Chatsworth, 18 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 996 Google reviews, listed on Google as “Plumber”.
Based in Castaic
Ranked #14 because of its Google rating and trade focus: 5.0★ from 215 Google reviews, listed on Google as “Plumber”.
Based in Santa Clarita, 14 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 250 Google reviews, listed on Google as “Plumber”.
Based in San Fernando, 18 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 572 Google reviews, listed on Google as “Plumber”.
Based in Simi Valley, 18 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 386 Google reviews, listed on Google as “Plumber”.
Based in Valencia, 5 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 56 Google reviews, listed on Google as “Plumber”.
Based in Chatsworth, 18 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 343 Google reviews, listed on Google as “Plumber”.
Based in Santa Clarita, 9 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Plumber”.
Based in Los Angeles, 16 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 176 Google reviews, listed on Google as “Plumber”.
Based in North Hills, 19 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 983 Google reviews, listed on Google as “Plumber”.
Based in North Hollywood, 14 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
Based in Thousand Oaks, 23 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 546 Google reviews, listed on Google as “Plumber”.
Based in Santa Clarita, 16 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 131 Google reviews, listed on Google as “Plumber”.
#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 478 ranked plumbers here; the rest are on their profiles.
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 |
|---|---|---|
| A-one Plumbing Heating & Air Conditioning | 3.0★ (1) | In Castaic |
| ACCULINE LEAK DETECTION | 4.9★ (99) | 18 mi |
| B's Construction & Handyman Service | 4.0★ (1) | In Castaic |
| Candu Plumbing of Chatsworth | 5.0★ (2) | 17 mi |
| Caravaggio Plumbing | 5.0★ (2) | 17 mi |
| City Light Bullet Proof Glass Construction & Electric | 5.0★ (1) | In Castaic |
| Conejo Services HVAC, Plumbing and Electrical | 4.9★ (86) | 3 mi |
| Dutton Plumbing, Cooling & Heating | 4.8★ (2,247) | 23 mi |
| Eming Construction | 5.0★ (1) | In Castaic |
| Expert Connection | In Castaic | |
| George's Plumbing & Water Heater Repair | 5.0★ (2) | 16 mi |
| Hallway Plumbing & Drain Service | 5.0★ (2) | 9 mi |
| LSP Plumbing | 4.5★ (308) | 22 mi |
| Merari Mechanical LLC | 5.0★ (2) | In Castaic |
| Mr. J´s Plumbing | In Castaic | |
| Rooter Man Plumbing of Los Angeles | 4.5★ (419) | 23 mi |
| Roto-Rooter Plumbing & Water Cleanup | 4.4★ (625) | 22 mi |
| Sandoval Plumbing | 5.0★ (65) | 17 mi |
| Save A Lot Water Heaters | 5.0★ (2) | In Castaic |
| Top Mechanical Plumbers | 5.0★ (2) | 17 mi |
National price ranges in USD, not adjusted for Castaic. 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 |
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).
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
We scored 478 Castaic 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 Castaic 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 |