61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 507 Google reviews, the most in Belvidere.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Pool Builders in Belvidere, IL (2026)
76 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Belvidere: Wolter Pools & Spas, CR Score 61/100; 4.9★ from 507 Google reviews; open Saturdays until 3 PM.
- 18
Best for emergencies (open 24/7): Jimmy’s cleaning services LLC, posts 24/7 hours; ranked #18 of 76.
- 6
Most-reviewed: Cada Pools and Spas, 257 Google reviews at 4.8★, the most of 76 ranked after Wolter Pools & Spas; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
76 Belvidere pool builders are ranked here by CR Score, from ten published factors. 9 are open 24/7, 47 open Saturdays and 17 open Sundays, based on posted hours. The median Google rating is 4.8★ across 76 rated businesses.
Most of this list also appears on the Pool builders in Rockford ranking. See Pool builders in Rockford
Top 10 pool builders in Belvidere at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wolter Pools & Spas | 61 | 4.9★ (507) | Beloit, 22 mi away | Sat | Overall |
| 2 | Sonco Pools & Spas | 59 | 4.7★ (131) | Machesney Park, 11 mi away | Sat | — |
| 3 | Rockford Pool & Spa | 58 | 4.6★ (126) | Loves Park, 10 mi away | Sat | — |
| 4 | The Spa Shop | 58 | 4.9★ (73) | Belvidere | — | — |
| 5 | Arvidson Pools & Spas | 58 | 4.5★ (247) | Crystal Lake, 29 mi away | Sat · Sun | — |
| 6 | Cada Pools and Spas | 57 | 4.8★ (257) | Saint Charles, 35 mi away | Sat | Most reviews |
| 7 | Make A Splash Pools & Spas | 57 | 4.9★ (29) | Rockford, 11 mi away | — | — |
| 8 | Oasis Pool Water | 56 | 5.0★ (18) | South Beloit, 17 mi away | Sat · Sun · Evenings | — |
| 9 | Hot Tub Tony'z | 56 | 4.1★ (106) | Loves Park, 10 mi away | Sat | — |
| 10 | Nelson's HomeTowne Recreation | 56 | 4.2★ (220) | Janesville, 32 mi away | Sat · Sun | — |
The 76 best pool builders in Belvidere, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Machesney Park, 11 mi away
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 131 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 10 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 126 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#4 The Spa Shop
Based in Belvidere
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Crystal Lake, 29 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 247 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 35 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 257 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 11 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 29 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in South Beloit, 17 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 10 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.1★ from 106 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 32 mi away
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.2★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Freeport, 39 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#12 Poolside Pros
Based in Loves Park, 10 mi away
55/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.0★ from 85 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 37 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 10 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#15 JnT Pool Service
Based in Rockford, 18 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.3★ from 26 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 36 mi away
54/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 70 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 35 mi away
54/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 48 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Carpentersville, 31 mi away
54/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Machesney Park, 13 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 3.2★ from 10 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hampshire, 24 mi away
54/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 8 mi away
54/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Roscoe, 14 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.2★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#23 Meechs Beaches
Based in Crystal Lake, 25 mi away
53/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodstock, 20 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.0★ from 56 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrington, 37 mi away
53/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Belvidere pool builders
We scored 76 Belvidere 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 2, 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 Belvidere 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 Belvidere: frequently asked questions
Who is the best pool builder in Belvidere?
By CR Score, the highest-ranked pool builder in Belvidere, IL is Wolter Pools & Spas with a CR Score of 61/100. It has 4.9★ from 507 Google reviews. It is open Saturdays until 3 PM. Sonco Pools & Spas (#2) and Rockford Pool & Spa (#3) follow. We ranked 76 pool builders on ten factors, last updated November 2, 2026.
How many pool builders are there in Belvidere?
ContractorsRanked ranks 76 pool builders serving Belvidere, IL. 1 of them is based in Belvidere; the rest serve it from nearby towns. Counts are as of November 2026.
Which pool builders in Belvidere are open 24/7?
9 ranked pool builders in Belvidere post 24/7 hours. The highest-ranked are Jimmy’s cleaning services LLC (#18), Gator's Pool Service LLC (#19) and Northern Lites Gas Company (#20). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Belvidere work on weekends?
47 of 76 ranked pool builders post Saturday hours and 17 post Sunday hours. The highest-ranked open Saturdays are Wolter Pools & Spas (#1), Sonco Pools & Spas (#2) and Rockford Pool & Spa (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Belvidere pool builders have?
The median Google rating among 76 rated pool builders in Belvidere is 4.8★, with a median of 18 reviews. Wolter Pools & Spas has the most, 507 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 Belvidere count in this ranking?
Yes, if they are within 40 mi of the Belvidere 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 Belvidere
- November 2026: CR Scores recalculated for 76 pool builders serving Belvidere.
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