64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 103 Google reviews, listed on Google as “Swimming pool repair service”.
Best Pool Builders in Altadena, CA (2026)
758 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Altadena: Glendale Pool Repair&Leaks, CR Score 64/100; 4.9★ from 103 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Encore Builders - Outdoor Living, posts 24/7 hours; ranked #2 of 758.
- 3
Most-reviewed: Living Water Pool Service, 272 Google reviews at 5.0★, the most of 758 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
758 Altadena pool builders are ranked here by CR Score, from ten published factors. 112 are open 24/7, 444 open Saturdays and 260 open Sundays, based on posted hours. The median Google rating is 4.9★ across 757 rated businesses.
Top 10 pool builders in Altadena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Glendale Pool Repair&Leaks | 64 | 4.9★ (103) | Glendale, 8 mi away | 24/7 | Overall |
| 2 | Encore Builders - Outdoor Living | 63 | 5.0★ (177) | Canoga Park, 27 mi away | 24/7 | Emergencies |
| 3 | Living Water Pool Service | 62 | 5.0★ (272) | La Cañada Flintridge, 4 mi away | — | Most reviews |
| 4 | Premier Leak Detection Sunland | 62 | 4.9★ (113) | Sunland, 11 mi away | Sat · Sun · Evenings | — |
| 5 | FC Pool | 62 | 4.7★ (146) | Los Angeles, 20 mi away | 24/7 | — |
| 6 | Royal Globe Pool Construction | 62 | 4.9★ (81) | Los Angeles, 17 mi away | 24/7 | — |
| 7 | SilverKing Leisure Pool Services | 62 | 5.0★ (161) | Santa Clarita, 31 mi away | 24/7 | — |
| 8 | Pool Builder Arcadia | 62 | 5.0★ (68) | Arcadia, 7 mi away | Sat · Sun · Evenings | — |
| 9 | Ultimate Pool Guy | 62 | 5.0★ (73) | Sherman Oaks, 19 mi away | 24/7 | — |
| 10 | Sunshine Pool and Leak Stoppers | 62 | 4.9★ (58) | La Cañada Flintridge, 4 mi away | Sat · Sun · Evenings | — |
The 758 best pool builders in Altadena, 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 Canoga Park, 27 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 177 Google reviews, listed on Google as “Swimming pool contractor”.
Based in La Cañada Flintridge, 4 mi away
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Sunland, 11 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 113 Google reviews, listed on Google as “Swimming pool repair service”.
#5 FC Pool
Based in Los Angeles, 20 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.7★ from 146 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Los Angeles, 17 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 81 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Santa Clarita, 31 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Arcadia, 7 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Sherman Oaks, 19 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Swimming pool contractor”.
Based in La Cañada Flintridge, 4 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “Swimming pool repair service”.
Based in North Hills, 20 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 153 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Sunland, 12 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 104 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Los Angeles, 19 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 71 Google reviews, listed on Google as “Swimming pool contractor”.
Based in San Fernando, 18 mi away
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Studio City, 14 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 109 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Northridge, 25 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 93 Google reviews, listed on Google as “Swimming pool contractor”.
#17 Tumi Builders
Based in Encino, 23 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 117 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Beverly Hills, 18 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 115 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Los Angeles, 20 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 88 Google reviews, listed on Google as “Swimming pool repair service”.
#20 Mr. Pool Leaks
Based in North Hollywood, 15 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 91 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Marina del Rey, 24 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 127 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Sherman Oaks, 18 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 97 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Upland, 26 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.7★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based in North Hills, 22 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 126 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Culver City, 20 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 108 Google reviews, listed on Google as “Swimming pool repair service”.
Pool builders 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 758 ranked pool builders here; the rest are on their profiles.
Also serving Altadena
20 more pool builders within 40 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 |
|---|---|---|
| BP Pool Service | 5.0★ (2) | 13 mi |
| Castillo Pool Service | 5.0★ (2) | 2 mi |
| Condor Inc | 5.0★ (2) | 11 mi |
| Crow Design Build, Inc | In Altadena | |
| Crystal Clear Pool Solutions | 3.0★ (2) | 8 mi |
| DOWNTOWN POOLS | 5.0★ (2) | 12 mi |
| Gardens Inc | 5.0★ (2) | In Altadena |
| George's Pool and Spa cleaning Service & repair | 5.0★ (2) | 7 mi |
| Glendale Pool Builders | 5.0★ (2) | 8 mi |
| Jeremy's Electric / Solar for Less | 5.0★ (2) | 10 mi |
| L.A Cover Guy | 2.0★ (2) | 6 mi |
| mission pool & spa | 3.0★ (2) | 10 mi |
| Nadar Inc | 5.0★ (1) | In Altadena |
| Pacific Custom Pools Inc | 5.0★ (2) | 3 mi |
| Pepe’s Pools Inc. | 5.0★ (2) | 6 mi |
| Phil Gomez Pool Services | 1.0★ (2) | 13 mi |
| Poolside Gardens, Inc. | 5.0★ (2) | In Altadena |
| Proficiency plumbing and fire | 5.0★ (5) | In Altadena |
| Sarian's Pool Services | 4.0★ (2) | 12 mi |
| Ventura Pool Services | 4.5★ (2) | 7 mi |
How we ranked Altadena pool builders
We scored 758 Altadena pool builders 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 November 3, 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 Altadena 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 |
Pool builders in Altadena: frequently asked questions
Who is the best pool builder in Altadena?
By CR Score, the highest-ranked pool builder in Altadena, CA is Glendale Pool Repair&Leaks with a CR Score of 64/100. It has 4.9★ from 103 Google reviews. It is open 24/7. Encore Builders - Outdoor Living (#2) and Living Water Pool Service (#3) follow. We ranked 758 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Altadena?
ContractorsRanked ranks 758 pool builders serving Altadena, CA. 1 of them is based in Altadena; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in Altadena are open 24/7?
112 ranked pool builders in Altadena post 24/7 hours. The highest-ranked are Glendale Pool Repair&Leaks (#1), Encore Builders - Outdoor Living (#2) and FC Pool (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Altadena work on weekends?
444 of 758 ranked pool builders post Saturday hours and 260 post Sunday hours. The highest-ranked open Saturdays are Glendale Pool Repair&Leaks (#1), Encore Builders - Outdoor Living (#2) and Premier Leak Detection Sunland (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Altadena pool builders have?
The median Google rating among 757 rated pool builders in Altadena is 4.9★, with a median of 11 reviews. Living Water Pool Service has the most, 272 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pool builders?
Each pool builder 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.
Do pool builders outside Altadena count in this ranking?
Yes, if they are within 40 mi of the Altadena city center, our service radius for pool builders. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can pool builders pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Altadena
- November 2026: CR Scores recalculated for 758 pool builders serving Altadena.
- November 2026: 9 duplicate listings merged.
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