65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 447 Google reviews, listed on Google as “Swimming pool repair service”.
Best Pool Builders in Grand Terrace, CA (2026)
557 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Grand Terrace: PoolGenX, CR Score 65/100; 4.8★ from 447 Google reviews; open 24/7.
- 6
Best for emergencies (open 24/7): Blue Star pool and Spa Services, posts 24/7 hours; ranked #6 of 557.
- 2
Most-reviewed: Inland Empire Hot Spring Spas, 773 Google reviews at 4.9★, the most of 557 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
557 Grand Terrace pool builders are ranked here by CR Score, from ten published factors. 53 are open 24/7, 341 open Saturdays and 171 open Sundays, based on posted hours. The median Google rating is 4.8★ across 557 rated businesses.
Top 10 pool builders in Grand Terrace at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PoolGenX | 65 | 4.8★ (447) | Riverside, 11 mi away | 24/7 | Overall |
| 2 | Inland Empire Hot Spring Spas | 65 | 4.9★ (773) | Moreno Valley, 10 mi away | Sat · Sun | Most reviews |
| 3 | VINYL POOL PROS | 61 | 4.9★ (156) | Rancho Cucamonga, 16 mi away | Sat · Sun | — |
| 4 | Tak-It-EZ Pool & Spa | 60 | 4.7★ (125) | Fontana, 8 mi away | Sat · Sun | — |
| 5 | Saddleback Mountain pool and spa service | 60 | 5.0★ (253) | Rancho Santa Margarita, 31 mi away | Sat · Sun · Evenings | — |
| 6 | Blue Star pool and Spa Services | 60 | 5.0★ (92) | Big Bear Lake, 28 mi away | 24/7 | Emergencies |
| 7 | BENchmark Pool Services | 59 | 5.0★ (63) | Redlands, 13 mi away | Sat · Sun · Evenings | — |
| 8 | Gary's Swimming Pool Supplies | 59 | 4.7★ (220) | Upland, 22 mi away | Sat · Sun | — |
| 9 | Sparkle Pool Services, Inc | 59 | 5.0★ (40) | Riverside, 8 mi away | Sat · Sun · Evenings | — |
| 10 | Poolwerx Redlands | 59 | 4.4★ (108) | Redlands, 6 mi away | Sat · Sun | — |
The 557 best pool builders in Grand Terrace, 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 Moreno Valley, 10 mi away
65/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 773 Google reviews, the most in Grand Terrace.
Based in Rancho Cucamonga, 16 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 Fontana, 8 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 125 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Rancho Santa Margarita, 31 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 253 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Big Bear Lake, 28 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 92 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Redlands, 13 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Upland, 22 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Riverside, 8 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Redlands, 6 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.4★ from 108 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Moreno Valley, 19 mi away
59/100CR 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 San Bernardino, 8 mi away
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.4★ from 104 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Fontana, 8 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.4★ from 84 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Riverside, 12 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 72 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Riverside, 7 mi away
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.1★ from 50 Google reviews, listed on Google as “Swimming pool contractor”.
Based in San Bernardino, 6 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.2★ from 129 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Fontana, 8 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 36 Google reviews, listed on Google as “Swimming pool contractor”.
Based in San Bernardino, 7 mi away
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 116 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Rancho Cucamonga, 21 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Moreno Valley, 8 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.1★ from 133 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Riverside, 7 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 87 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Eastvale, 15 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 164 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Riverside, 10 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 174 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Ontario, 16 mi away
58/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Riverside, 6 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 14 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 557 ranked pool builders here; the rest are on their profiles.
Also serving Grand Terrace
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 |
|---|---|---|
| Baja Pool Service, LLC | 3.0★ (2) | 9 mi |
| Bigums Pool Services | 5.0★ (2) | 11 mi |
| Blue Pool Services | 1.0★ (2) | 11 mi |
| Chris Quality Pool Repair | 3.0★ (2) | 13 mi |
| CnC Pool Construction, LLC | 5.0★ (2) | In Grand Terrace |
| Commercial Pool Spa Services | 3.0★ (2) | 4 mi |
| Concrete Transformations of CA | 5.0★ (2) | 10 mi |
| Coolwater Pools and Landscape | 5.0★ (2) | 15 mi |
| Crystal Blue Pools & Spas | 4.5★ (2) | 13 mi |
| Doyle's Pool Company | 5.0★ (2) | 11 mi |
| Genesis Pool & Spa Services | 3.5★ (2) | 11 mi |
| Leo's Pool Services | 3.0★ (2) | 11 mi |
| Marben Custom Pools | 3.0★ (2) | 8 mi |
| Modern Builder Inc. | 5.0★ (2) | 12 mi |
| Oscar's Swimming Pool Service | 5.0★ (2) | 8 mi |
| Protek Pool Systems | 5.0★ (2) | 9 mi |
| Rancho Cucamonga Pool Contractors | 5.0★ (2) | 15 mi |
| River's Heating & Air | 4.5★ (2) | 15 mi |
| Ryan's Pool & Spa | 3.0★ (2) | 14 mi |
| Surface Renewal Pool Tile Cleaning Inc. | 1.0★ (2) | 11 mi |
How we ranked Grand Terrace pool builders
We scored 557 Grand Terrace 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 Grand Terrace 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 Grand Terrace: frequently asked questions
Who is the best pool builder in Grand Terrace?
By CR Score, the highest-ranked pool builder in Grand Terrace, CA is PoolGenX with a CR Score of 65/100. It has 4.8★ from 447 Google reviews. It is open 24/7. Inland Empire Hot Spring Spas (#2) and VINYL POOL PROS (#3) follow. We ranked 557 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Grand Terrace?
ContractorsRanked ranks 557 pool builders serving Grand Terrace, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in Grand Terrace are open 24/7?
53 ranked pool builders in Grand Terrace post 24/7 hours. The highest-ranked are PoolGenX (#1), Blue Star pool and Spa Services (#6) and Moe's Pool And Spa Service (#15). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Grand Terrace work on weekends?
341 of 557 ranked pool builders post Saturday hours and 171 post Sunday hours. The highest-ranked open Saturdays are PoolGenX (#1), Inland Empire Hot Spring Spas (#2) and VINYL POOL PROS (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Grand Terrace pool builders have?
The median Google rating among 557 rated pool builders in Grand Terrace is 4.8★, with a median of 13 reviews. Inland Empire Hot Spring Spas has the most, 773 reviews, and ranks #2. 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 Grand Terrace count in this ranking?
Yes, if they are within 40 mi of the Grand Terrace 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 Grand Terrace
- November 2026: CR Scores recalculated for 557 pool builders serving Grand Terrace.
- November 2026: 5 duplicate listings merged.
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