63/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 447 Google reviews, the most in Fullerton.
Best Pool Builders in Fullerton, CA (2026)
763 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Fullerton: PoolGenX, CR Score 63/100; 4.8★ from 447 Google reviews; open 24/7.
- 5
Best for emergencies (open 24/7): MIGUEL’S POOL SERVICE, posts 24/7 hours; ranked #5 of 763.
- 49
Most-reviewed: Living Water Pool Service, 272 Google reviews at 5.0★, the most of 763 ranked after PoolGenX; ranked #49.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
763 Fullerton pool builders are ranked here by CR Score, from ten published factors. 93 are open 24/7, 459 open Saturdays and 247 open Sundays, based on posted hours. The median Google rating is 4.9★ across 763 rated businesses.
Top 10 pool builders in Fullerton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PoolGenX | 63 | 4.8★ (447) | Riverside, 28 mi away | 24/7 | Overall |
| 2 | Saddleback Mountain pool and spa service | 62 | 5.0★ (253) | Rancho Santa Margarita, 24 mi away | Sat · Sun · Evenings | — |
| 3 | Leslie's Pool Supplies | 61 | 4.5★ (120) | Anaheim, 4 mi away | Sat · Sun | — |
| 4 | PSMP - Pool Service & Maintenance Professionals | 61 | 4.9★ (198) | Fullerton | — | — |
| 5 | MIGUEL’S POOL SERVICE | 61 | 4.5★ (48) | East Los Angeles, 6 mi away | 24/7 | Emergencies |
| 6 | Glendale Pool Repair&Leaks | 61 | 4.9★ (103) | Glendale, 27 mi away | 24/7 | — |
| 7 | Gary's Swimming Pool Supplies | 61 | 4.7★ (220) | Upland, 21 mi away | Sat · Sun | — |
| 8 | Proper Pool Service | 60 | 5.0★ (62) | Huntington Beach, 15 mi away | Sat · Sun · Evenings | — |
| 9 | Poolboyzoc | 60 | 5.0★ (72) | Anaheim, 18 mi away | Sat · Sun · Evenings | — |
| 10 | VINYL POOL PROS | 60 | 4.9★ (156) | Rancho Cucamonga, 27 mi away | Sat · Sun | — |
The 763 best pool builders in Fullerton, 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 Rancho Santa Margarita, 24 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 253 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Anaheim, 4 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.5★ from 120 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Fullerton
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 198 Google reviews, listed on Google as “Swimming pool repair service”.
Based in East Los Angeles, 6 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 48 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Glendale, 27 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 103 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Upland, 21 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Huntington Beach, 15 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Swimming pool contractor”.
#9 Poolboyzoc
Based in Anaheim, 18 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “Swimming pool repair service”.
#10 VINYL POOL PROS
Based in Rancho Cucamonga, 27 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Moreno Valley, 18 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 100 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Fullerton
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 100 Google reviews, listed on Google as “Swimming pool contractor”.
#13 FC Pool
Based in Los Angeles, 32 mi away
60/100CR ScoreRanked #13 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, 30 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 81 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Arcadia, 20 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Yorba Linda, 5 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Rancho Cucamonga, 18 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Torrance, 23 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 56 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Chino Hills, 13 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Garden Grove, 2 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Los Angeles, 31 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 71 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Corona, 8 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Claremont, 20 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Torrance, 25 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Marina del Rey, 32 mi away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 127 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 763 ranked pool builders here; the rest are on their profiles.
Also serving Fullerton
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 |
|---|---|---|
| All Seasons Custom Pools | 5.0★ (2) | 6 mi |
| Alpha Swimming Pool & Spa | In Fullerton | |
| Gallagher Plumbing | 5.0★ (2) | 6 mi |
| Green Pool doctor | 5.0★ (2) | 7 mi |
| Healing Waters | 5.0★ (2) | In Fullerton |
| McCoy Pool Construction | 4.5★ (2) | 5 mi |
| Mirage Pools & Spas/David Lee | 3.0★ (2) | 5 mi |
| Mory Brothers Pools | In Fullerton | |
| MSN POOL PLASTERING CONSTRUCTION | 5.0★ (2) | 7 mi |
| Nexus Pool Construction | 5.0★ (2) | 7 mi |
| North County Pool Services | 5.0★ (1) | In Fullerton |
| Pacific Blue Pools | In Fullerton | |
| Paradise Pools | 5.0★ (2) | 7 mi |
| Parral’s Pool Services | 5.0★ (1) | In Fullerton |
| Pool Concepts Unlimited | 1.0★ (2) | 3 mi |
| Pool Icons | 5.0★ (2) | 5 mi |
| Ruiz Pool & Spa | 1.0★ (2) | 5 mi |
| Scott & Co Pool & Spa Services | 5.0★ (2) | 3 mi |
| Shoreline Construction Pools | In Fullerton | |
| Thompson Pool Plumbing, Inc. | 5.0★ (2) | 4 mi |
How we ranked Fullerton pool builders
We scored 763 Fullerton 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 Fullerton 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 Fullerton: frequently asked questions
Who is the best pool builder in Fullerton?
By CR Score, the highest-ranked pool builder in Fullerton, CA is PoolGenX with a CR Score of 63/100. It has 4.8★ from 447 Google reviews. It is open 24/7. Saddleback Mountain pool and spa service (#2) and Leslie's Pool Supplies (#3) follow. We ranked 763 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Fullerton?
ContractorsRanked ranks 763 pool builders serving Fullerton, CA. 2 of them are based in Fullerton; 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 Fullerton are open 24/7?
93 ranked pool builders in Fullerton post 24/7 hours. The highest-ranked are PoolGenX (#1), MIGUEL’S POOL SERVICE (#5) and Glendale Pool Repair&Leaks (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Fullerton work on weekends?
459 of 763 ranked pool builders post Saturday hours and 247 post Sunday hours. The highest-ranked open Saturdays are PoolGenX (#1), Saddleback Mountain pool and spa service (#2) and Leslie's Pool Supplies (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Fullerton pool builders have?
The median Google rating among 763 rated pool builders in Fullerton is 4.9★, with a median of 13 reviews. PoolGenX has the most, 447 reviews, and ranks #1. 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 Fullerton count in this ranking?
Yes, if they are within 40 mi of the Fullerton 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 Fullerton
- November 2026: CR Scores recalculated for 763 pool builders serving Fullerton.
- November 2026: 9 duplicate listings merged.
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