63/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 447 Google reviews, the most in Glendora.
Best Pool Builders in Glendora, CA (2026)
825 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Glendora: PoolGenX, CR Score 63/100; 4.8★ from 447 Google reviews; open 24/7.
- 4
Best for emergencies (open 24/7): Glendale Pool Repair&Leaks, posts 24/7 hours; ranked #4 of 825.
- 17
Most-reviewed: Living Water Pool Service, 272 Google reviews at 5.0★, the most of 825 ranked after PoolGenX; ranked #17.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
825 Glendora pool builders are ranked here by CR Score, from ten published factors. 105 are open 24/7, 491 open Saturdays and 263 open Sundays, based on posted hours. The median Google rating is 4.9★ across 825 rated businesses.
Top 10 pool builders in Glendora at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PoolGenX | 63 | 4.8★ (447) | Riverside, 29 mi away | 24/7 | Overall |
| 2 | Gary's Swimming Pool Supplies | 62 | 4.7★ (220) | Upland, 10 mi away | Sat · Sun | — |
| 3 | VINYL POOL PROS | 61 | 4.9★ (156) | Rancho Cucamonga, 17 mi away | Sat · Sun | — |
| 4 | Glendale Pool Repair&Leaks | 61 | 4.9★ (103) | Glendale, 22 mi away | 24/7 | Emergencies |
| 5 | Pool Builder Arcadia | 61 | 5.0★ (68) | Arcadia, 9 mi away | Sat · Sun · Evenings | — |
| 6 | Cali Coast Pools | 61 | 4.7★ (24) | Glendora | 24/7 | — |
| 7 | Pool Cleaning Service and Maintenance | 61 | 4.9★ (63) | Claremont, 9 mi away | Sat · Sun · Evenings | — |
| 8 | ORCA Pool Cleaning Service and Maintenance | 60 | 5.0★ (31) | Rancho Cucamonga, 12 mi away | 24/7 | — |
| 9 | Johnny's Pool & Spa Service | 60 | 4.1★ (204) | Covina, 3 mi away | Sat · Sun | — |
| 10 | Saddleback Mountain pool and spa service | 60 | 5.0★ (253) | Rancho Santa Margarita, 37 mi away | Sat · Sun · Evenings | — |
The 825 best pool builders in Glendora, 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 Upland, 10 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Rancho Cucamonga, 17 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Glendale, 22 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 103 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Arcadia, 9 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Glendora
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Claremont, 9 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Rancho Cucamonga, 12 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Covina, 3 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.1★ from 204 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Rancho Santa Margarita, 37 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 253 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Moreno Valley, 20 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”.
#12 FC Pool
Based in Los Angeles, 33 mi away
59/100CR ScoreRanked #12 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
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 81 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Chino Hills, 12 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Sunland, 27 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 113 Google reviews, listed on Google as “Swimming pool repair service”.
Based in La Puente, 7 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 74 Google reviews, listed on Google as “Swimming pool repair service”.
Based in La Cañada Flintridge, 20 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Sherman Oaks, 34 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Los Angeles, 32 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 71 Google reviews, listed on Google as “Swimming pool contractor”.
#20 AQUA POOL PRO
Based in Rancho Cucamonga, 14 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Rancho Cucamonga, 16 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 176 Google reviews, listed on Google as “Swimming pool repair service”.
#22 Westmod
Based in Glendora
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Upland, 11 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Glendora
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.0★ from 66 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Rancho Cucamonga, 15 mi away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
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 825 ranked pool builders here; the rest are on their profiles.
Also serving Glendora
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 |
|---|---|---|
| 3m Pools | 5.0★ (2) | 7 mi |
| Affordable Pool Service & Repair | In Glendora | |
| Aquaman Pool Service Chino Hills | 5.0★ (2) | 9 mi |
| Baccaro Pool Service | 2.5★ (2) | 11 mi |
| BP Pool Service | 5.0★ (2) | 11 mi |
| CaliPoolTechs | 5.0★ (2) | 4 mi |
| Condor Inc | 5.0★ (2) | 10 mi |
| Corey Pool Care | 5.0★ (2) | 13 mi |
| Gardens Inc | 5.0★ (2) | 7 mi |
| h2o pro pool | 5.0★ (2) | 11 mi |
| Huntington Pools Inc. | 5.0★ (2) | 4 mi |
| Modern Paving | 5.0★ (2) | 11 mi |
| Pacific Custom Pools Inc | 5.0★ (2) | 13 mi |
| Phil Gomez Pool Services | 1.0★ (2) | 9 mi |
| Ruf Pools | In Glendora | |
| Ryan's Pool & Spa | 1.0★ (1) | In Glendora |
| So Cal Pool Company | In Glendora | |
| The Pool Geeks | 4.5★ (2) | 5 mi |
| Tropical Pools | 2.5★ (2) | 8 mi |
| Water Visuals | 5.0★ (2) | 11 mi |
How we ranked Glendora pool builders
We scored 825 Glendora 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 Glendora 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 Glendora: frequently asked questions
Who is the best pool builder in Glendora?
By CR Score, the highest-ranked pool builder in Glendora, CA is PoolGenX with a CR Score of 63/100. It has 4.8★ from 447 Google reviews. It is open 24/7. Gary's Swimming Pool Supplies (#2) and VINYL POOL PROS (#3) follow. We ranked 825 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Glendora?
ContractorsRanked ranks 825 pool builders serving Glendora, CA. 5 of them are based in Glendora; 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 Glendora are open 24/7?
105 ranked pool builders in Glendora post 24/7 hours. The highest-ranked are PoolGenX (#1), Glendale Pool Repair&Leaks (#4) and Cali Coast Pools (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Glendora work on weekends?
491 of 825 ranked pool builders post Saturday hours and 263 post Sunday hours. The highest-ranked open Saturdays are PoolGenX (#1), Gary's Swimming Pool Supplies (#2) and VINYL POOL PROS (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Glendora pool builders have?
The median Google rating among 825 rated pool builders in Glendora is 4.9★, with a median of 12 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 Glendora count in this ranking?
Yes, if they are within 40 mi of the Glendora 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 Glendora
- November 2026: CR Scores recalculated for 825 pool builders serving Glendora.
- November 2026: 11 duplicate listings merged.
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