61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.6★ from 287 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Best Pool Builders in Thorold, ON (2026)
194 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Thorold: POOL BUSTERS, CR Score 61/100; 4.6★ from 287 Google reviews.
- 20
Best for emergencies (open 24/7): Niagara Landscaping Lawn Care and Cleaning (NLLC), posts 24/7 hours; ranked #20 of 194.
- 2
Most-reviewed: Majestic Pools, 831 Google reviews at 4.7★, the most of 194 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
194 Thorold pool builders are ranked here by CR Score, from ten published factors. 12 are open 24/7, 123 open Saturdays and 62 open Sundays, based on posted hours. The median Google rating is 4.7★ across 194 rated businesses.
Top 10 pool builders in Thorold at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | POOL BUSTERS | 61 | 4.6★ (287) | Welland, 11 km away | — | Overall |
| 2 | Majestic Pools | 61 | 4.7★ (831) | Depew, 46 km away | Sat · Sun | Most reviews |
| 3 | MP Paradise Pools and Spas | 58 | 4.4★ (243) | Niagara Falls, 9 km away | Sat | — |
| 4 | MP Paradise Pools and Spas | 58 | 4.5★ (218) | Welland, 14 km away | Sat | — |
| 5 | Premier Pool Group | 58 | 4.9★ (229) | Mississauga, 58 km away | Sat · Sun · Evenings | — |
| 6 | Buffalo Pool Service LLC | 58 | 4.8★ (335) | Buffalo, 46 km away | Sat · Evenings | — |
| 7 | The Pool Shoppe | 58 | 4.4★ (645) | Hamilton, 52 km away | Sat · Sun | — |
| 8 | Paradox Pools Inc. | 58 | 4.9★ (31) | Welland, 13 km away | Sat · Sun | — |
| 9 | Lakeshore Pools and Hot Tubs | 58 | 4.9★ (280) | Mississauga, 58 km away | Sat · Sun | — |
| 10 | Kandu Pools | 57 | 4.8★ (25) | Niagara Falls, 8 km away | Sat · Sun | — |
The 194 best pool builders in Thorold, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Depew, 46 km away
61/100CR ScoreRanked #2 because of its Google rating and review volume: 4.7★ from 831 Google reviews, the most in Thorold.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Niagara Falls, 9 km away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.4★ from 243 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Welland, 14 km away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.5★ from 218 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mississauga, 58 km away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 229 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Buffalo, 46 km away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 335 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hamilton, 52 km away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.4★ from 645 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Welland, 13 km away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 31 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mississauga, 58 km away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 280 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 Kandu Pools
Based in Niagara Falls, 8 km away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 6 km away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.3★ from 144 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hamilton, 53 km away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.4★ from 500 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Welland, 10 km away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 6 km away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 74 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 54 km away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.3★ from 565 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Niagara Falls, 15 km away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 62 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 WNY Pool Service
Based in Lancaster, 55 km away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 201 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 56 km away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 478 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#19 Doneen Sales
Based in Port Colborne, 24 km away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.6★ from 66 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Niagara Falls, 11 km away
56/100CR ScoreRanked #20 because of its Google rating and review volume: 4.7★ from 157 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakville, 59 km away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 205 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Thorold
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakville, 55 km away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.3★ from 362 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Welland, 16 km away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.2★ from 171 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St. Catharines, 9 km away
56/100CR ScoreRanked #25 because of its Google rating and review volume: 4.3★ from 711 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 194 ranked pool builders here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Aqua-Don Pool Service & Supplies | 56 | 4.3★ (82) | 8 km |
| 27 | MP Paradise Hot Tub & Swim Spa Outlet | 56 | 5.0★ (8) | 2 km |
| 28 | Palladium Pools | 56 | 4.8★ (32) | 13 km |
| 29 | Buds Spas & Pools | 56 | 4.4★ (390) | 62 km |
| 30 | Trident Pool Leak Detection | 56 | 4.9★ (64) | 53 km |
| 31 | Boldt Pools and Spas | 56 | 4.9★ (203) | 22 km |
| 32 | Sun & Splash Pool Service | 56 | 4.8★ (47) | 27 km |
| 33 | Pool Brite Inc | 56 | 4.7★ (90) | 35 km |
| 34 | Smart Pools | 55 | 4.5★ (43) | 52 km |
| 35 | Pool Ninjas | 55 | 4.9★ (106) | 54 km |
| 36 | Swimshine Pools | 55 | 4.9★ (109) | 59 km |
| 37 | Precision Pools | 55 | 4.7★ (41) | 29 km |
| 38 | Liners Plus | 55 | 4.5★ (29) | 30 km |
| 39 | Parrot Pool Service | 55 | 4.8★ (46) | 48 km |
| 40 | Blue Pools | 55 | 5.0★ (85) | 55 km |
| 41 | Gib-San Pool and Hot Tub Centre | 55 | 4.5★ (175) | 62 km |
| 42 | Pool Guy ON | 54 | 4.8★ (47) | 56 km |
| 43 | Risko Contracting | 54 | 5.0★ (13) | 13 km |
| 44 | Recreational Warehouse Mississauga | 54 | 4.4★ (158) | 62 km |
| 45 | A.J. Pools | 54 | 5.0★ (28) | 13 km |
| 46 | KD Pool Builders | 54 | 5.0★ (7) | 35 km |
| 47 | Smiley Pool Service | 54 | 3.8★ (42) | 27 km |
| 48 | MP Paradise Pools and Spas | 54 | 4.4★ (70) | 32 km |
| 49 | Clear Water Pools and Construction Services | 54 | 5.0★ (54) | 32 km |
| 50 | Gary Pools & Leisure | 54 | 4.1★ (131) | 33 km |
Also serving Thorold
20 more pool builders within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Aquastar Pool Services | 4.0★ (1) | 55 km |
| Eco Niagara Construction | 5.0★ (2) | 6 km |
| Falcon Pool & Gas Works | 5.0★ (1) | 37 km |
| Garden City Pools | 4.0★ (2) | 11 km |
| Hannah Pools | 3.5★ (2) | In Thorold |
| Honey Pool & Home | 5.0★ (2) | 54 km |
| Kodiak Contracting | 5.0★ (1) | 43 km |
| Luxe Pools & Design Inc | 5.0★ (2) | 61 km |
| Pool House Buffalo | 4.0★ (1) | 44 km |
| Pools Tubs Liners - PTL Direct Ltd | 5.0★ (2) | 11 km |
| Pur Pools | 5.0★ (2) | 13 km |
| Royal Pools And Landscape | 5.0★ (2) | 61 km |
| Schwimmer pools | 4.0★ (1) | 54 km |
| Steadfast Home Services | 5.0★ (10) | In Thorold |
| Superb Pools & Spa | 5.0★ (2) | 64 km |
| Superior Stone Landscape Contractors | 5.0★ (2) | 52 km |
| Swimming pool liner replacements | 5.0★ (1) | In Thorold |
| Team Pool Doctors | 5.0★ (1) | 53 km |
| Total Land Care Services | 5.0★ (2) | 7 km |
| WNYpoolliners.com | 5.0★ (2) | 27 km |
How we ranked Thorold pool builders
We scored 194 Thorold 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 Thorold 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 Thorold: frequently asked questions
Who is the best pool builder in Thorold?
By CR Score, the highest-ranked pool builder in Thorold, ON is POOL BUSTERS with a CR Score of 61/100. It has 4.6★ from 287 Google reviews. Majestic Pools (#2) and MP Paradise Pools and Spas (#3) follow. We ranked 194 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Thorold?
ContractorsRanked ranks 194 pool builders serving Thorold, ON. 1 of them is based in Thorold; the rest serve it from nearby towns. Another 20 within 64 km are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in Thorold are open 24/7?
12 ranked pool builders in Thorold post 24/7 hours. The highest-ranked is Niagara Landscaping Lawn Care and Cleaning (NLLC) (#20). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Thorold work on weekends?
123 of 194 ranked pool builders post Saturday hours and 62 post Sunday hours. The highest-ranked open Saturdays are Majestic Pools (#2), MP Paradise Pools and Spas (#3) and MP Paradise Pools and Spas (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Thorold pool builders have?
The median Google rating among 194 rated pool builders in Thorold is 4.7★, with a median of 34 reviews. Majestic Pools has the most, 831 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 Thorold count in this ranking?
Yes, if they are within 64 km of the Thorold city centre, 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 Thorold
- November 2026: CR Scores recalculated for 194 pool builders serving Thorold.
- November 2026: 2 duplicate listings merged.
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