60/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 159 Google reviews, listed on Google as “Swimming pool contractor”.
Best Pool Builders in Darien, CT (2026)
561 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Darien: Lifeguard LI, CR Score 60/100; 4.9★ from 159 Google reviews; open 7 days a week.
- 7
Best for emergencies (open 24/7): New Canaan Pool Service, posts 24/7 hours; ranked #7 of 561.
- 2
Most-reviewed: Island Recreational, 2,882 Google reviews at 4.5★, the most of 561 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
561 Darien pool builders are ranked here by CR Score, from ten published factors. 48 are open 24/7, 358 open Saturdays and 145 open Sundays, based on posted hours. The median Google rating is 4.6★ across 561 rated businesses.
Most of this list also appears on the Pool builders in Stamford ranking. See Pool builders in Stamford
Top 10 pool builders in Darien at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Lifeguard LI | 60 | 4.9★ (159) | Glen Cove, 17 mi away | Sat · Sun · Emergency | Overall |
| 2 | Island Recreational | 60 | 4.5★ (2,882) | Massapequa, 26 mi away | Sat · Sun | Most reviews |
| 3 | Bob the Diver | 60 | 5.0★ (364) | Ronkonkoma, 26 mi away | Sat · Sun · Evenings | — |
| 4 | Pool Doctor | 59 | 4.8★ (604) | East Northport, 16 mi away | Sat | — |
| 5 | Suntek Pools & Spas | 59 | 4.9★ (319) | Farmingdale, 24 mi away | Sat · Sun | — |
| 6 | Pool Leak Detection LLC | 58 | 5.0★ (320) | Woodbury, 32 mi away | Sat · Sun · Evenings | — |
| 7 | New Canaan Pool Service | 58 | 4.7★ (20) | Norwalk, 4 mi away | 24/7 | Emergencies |
| 8 | Florida Concepts Pools & spa’s Inc. | 58 | 4.9★ (79) | Mahopac, 24 mi away | 24/7 | — |
| 9 | OUTSIDE | 58 | 4.9★ (126) | Port Chester, 11 mi away | Sat | — |
| 10 | LEM-US POOLS | 58 | 4.9★ (512) | Hawthorne, 36 mi away | Sat · Sun | — |
The 561 best pool builders in Darien, 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 Massapequa, 26 mi away
60/100CR ScoreRanked #2 because of its Google rating and review volume: 4.5★ from 2,882 Google reviews, the most in Darien.
Based in Ronkonkoma, 26 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 364 Google reviews, listed on Google as “Swimming pool repair service”.
#4 Pool Doctor
Based in East Northport, 16 mi away
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 604 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Farmingdale, 24 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 319 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Woodbury, 32 mi away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 320 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Norwalk, 4 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Mahopac, 24 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Swimming pool contractor”.
#9 OUTSIDE
Based in Port Chester, 11 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 126 Google reviews, listed on Google as “Swimming pool repair service”.
#10 LEM-US POOLS
Based in Hawthorne, 36 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 512 Google reviews, listed on Google as “Swimming pool contractor”.
#11 Advantage L.I.
Based in Holbrook, 27 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 218 Google reviews, listed on Google as “Swimming pool contractor”.
Based in East Elmhurst, 31 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Hackensack, 33 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 102 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Danbury, 22 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 272 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Selden, 38 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Long Island City, 32 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Coram, 28 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 176 Google reviews, listed on Google as “Swimming pool contractor”.
Based in New York City, 26 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 100 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Jefferson Valley-Yorktown, 26 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 238 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Lake Ronkonkoma, 26 mi away
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 226 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Stamford, 5 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Commack, 19 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Swimming pool contractor”.
#23 in2blue design
Based in Norwalk, 3 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Swimming pool contractor”.
#24 Aquacade Pools
Based in Hicksville, 23 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 268 Google reviews, listed on Google as “Swimming pool contractor”.
Based in New York City, 16 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “Swimming pool contractor”.
How we ranked Darien pool builders
We scored 561 Darien 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 Darien 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 Darien: frequently asked questions
Who is the best pool builder in Darien?
By CR Score, the highest-ranked pool builder in Darien, CT is Lifeguard LI with a CR Score of 60/100. It has 4.9★ from 159 Google reviews. It is open 7 days a week. Island Recreational (#2) and Bob the Diver (#3) follow. We ranked 561 pool builders on ten factors, last updated November 2, 2026.
Which pool builders in Darien are open 24/7?
48 ranked pool builders in Darien post 24/7 hours. The highest-ranked are New Canaan Pool Service (#7), Florida Concepts Pools & spa’s Inc. (#8) and Wizard of Pools Inc (#12). Lifeguard LI (#1) also lists emergency service. Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Darien work on weekends?
358 of 561 ranked pool builders post Saturday hours and 145 post Sunday hours. The highest-ranked open Saturdays are Lifeguard LI (#1), Island Recreational (#2) and Bob the Diver (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Darien pool builders have?
The median Google rating among 561 rated pool builders in Darien is 4.6★, with a median of 20 reviews. Island Recreational has the most, 2,882 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 Darien count in this ranking?
Yes, if they are within 40 mi of the Darien 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 Darien
- November 2026: CR Scores recalculated for 561 pool builders serving Darien.
- November 2026: 2 duplicate listings merged.
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