61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 389 Google reviews, the most in St. Charles.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Pool Builders in St. Charles, MD (2026)
205 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in St. Charles: Capital Hot Tubs & Saunas – Fairfax, CR Score 61/100; 4.7★ from 389 Google reviews; open 7 days a week.
- 8
Best for emergencies (open 24/7): Finn's Pool & Spa Service, posts 24/7 hours; ranked #8 of 205.
- 23
Most-reviewed: Anthony & Sylvan Pools, 389 Google reviews at 4.5★, tied for the most of 205 ranked; ranked #23.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
205 St. Charles pool builders are ranked here by CR Score, from ten published factors. 9 are open 24/7, 105 open Saturdays and 37 open Sundays, based on posted hours. The median Google rating is 4.7★ across 205 rated businesses.
Top 10 pool builders in St. Charles at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Capital Hot Tubs & Saunas – Fairfax | 61 | 4.7★ (389) | Fairfax, 28 mi away | Sat · Sun | Overall |
| 2 | Subcomm Pools | 60 | 4.9★ (137) | Falls Church, 24 mi away | Sat · Sun | — |
| 3 | Countywide Pool Services | 60 | 4.7★ (71) | Waldorf, 4 mi away | — | — |
| 4 | Marlboro Swimming Pool Supply | 60 | 4.8★ (212) | Suitland, 18 mi away | Sat | — |
| 5 | MS Home Pool Services Inc. | 59 | 4.9★ (147) | Alexandria, 19 mi away | Sat | — |
| 6 | Life Line Pool And Spa LLC | 59 | 4.9★ (97) | Cherry Hill, 11 mi away | Sat | — |
| 7 | Brighton Pools | 59 | 4.9★ (175) | Annapolis, 35 mi away | Sat · Sun | — |
| 8 | Finn's Pool & Spa Service | 59 | 4.7★ (70) | Vienna, 27 mi away | 24/7 | Emergencies |
| 9 | AquaPros, LLC | 59 | 5.0★ (181) | Chesapeake Ranch Estates, 17 mi away | — | — |
| 10 | Capital Hot Tubs & Saunas – Rockville | 59 | 4.6★ (301) | Rockville, 35 mi away | Sat · Sun | — |
The 205 best pool builders in St. Charles, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Falls Church, 24 mi away
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 137 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waldorf, 4 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 71 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 Suitland, 18 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 212 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alexandria, 19 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 147 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cherry Hill, 11 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Annapolis, 35 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 175 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vienna, 27 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 70 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chesapeake Ranch Estates, 17 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockville, 35 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.6★ from 301 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chantilly, 35 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.5★ from 329 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Springfield, 20 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 129 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Greater Upper Marlboro, 12 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 52 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#14 System Pools LLC
Based in Rockville, 32 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 102 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Springfield, 21 mi away
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.5★ from 179 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waldorf, 1 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 32 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 Hot Tubs Inc
Based in Waldorf, 17 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.2★ from 305 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chantilly, 34 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burke, 20 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 192 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lorton, 17 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lorton, 17 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 119 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#22 B&D Pools LLC
Based in Silver Spring, 34 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 88 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Jessup, 38 mi away
57/100CR ScoreRanked #23 because of its Google rating and review volume: 4.5★ from 389 Google reviews, the most in St. Charles.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#24 Subcomm Pools
Based in Alexandria, 17 mi away
56/100CR ScoreRanked #24 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 Arlington, 18 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 20 Google reviews, listed on Google as “Swimming pool contractor”.
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 205 ranked pool builders here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Summit Pools | 56 | 4.9★ (43) | 22 mi |
| 27 | True Blue Leak Detection LLC | 56 | 5.0★ (77) | 22 mi |
| 28 | McConnell Pool LLC | 56 | 4.3★ (69) | 2 mi |
| 29 | Wise Pool & Spa Service, Inc. | 55 | 4.2★ (24) | 9 mi |
| 30 | A Pool Services | 55 | 4.9★ (37) | 12 mi |
| 31 | Residential Pool Service LLC | 55 | 4.9★ (94) | 38 mi |
| 32 | Leslie's Pool Supplies | 55 | 4.3★ (46) | 13 mi |
| 33 | Leslie's Pool Supplies | 55 | 4.5★ (61) | 21 mi |
| 34 | High Sierra Pools | 55 | 4.2★ (277) | 20 mi |
| 35 | High Quality Pool Services | 55 | 5.0★ (36) | 36 mi |
| 36 | Gene Lilly Pools, Spas & Games | 55 | 4.6★ (213) | 40 mi |
| 37 | Stellar Pool Services | 55 | 4.8★ (177) | 33 mi |
| 38 | HYDRATECH LLC | 55 | 5.0★ (59) | 33 mi |
| 39 | Coversafe, Inc. | 55 | 5.0★ (46) | 18 mi |
| 40 | Splash Pools LLC | 55 | 5.0★ (56) | 22 mi |
| 41 | Occoquan Pool Services | 55 | 4.8★ (23) | 20 mi |
| 42 | Silva Pool Plastering | 55 | 4.4★ (21) | 12 mi |
| 43 | Kings Pool and Spa | 55 | 4.8★ (68) | 32 mi |
| 44 | BJ Pool and Spa | 55 | 4.5★ (61) | 25 mi |
| 45 | Mazariegos Brothers General Construction, Inc. | 54 | 4.4★ (50) | 11 mi |
| 46 | OLD DOMINION POOLS | 54 | 4.2★ (5) | 18 mi |
| 47 | Blue Haven Pools & Spas | 54 | 4.5★ (168) | 30 mi |
| 48 | Goudy Pools, Inc | 54 | 4.7★ (186) | 37 mi |
| 49 | Leslie's Pool Supplies | 54 | 4.5★ (60) | 28 mi |
| 50 | McLean Pool and Spa | 54 | 4.7★ (79) | 26 mi |
Also serving St. Charles
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 |
|---|---|---|
| Alexander Pool Corporation | 5.0★ (2) | 21 mi |
| Battlefield Services | 5.0★ (2) | 38 mi |
| Bluewater Pool Services | 5.0★ (2) | 33 mi |
| Chesapeake Pools | 3.0★ (2) | 22 mi |
| Chesapeake Water Gardens LLC | 5.0★ (2) | 9 mi |
| Empire Pool Plastering LLC | 5.0★ (1) | 22 mi |
| Exquisite pools and spa llc | 5.0★ (1) | 10 mi |
| Huston Pools | 3.0★ (2) | 28 mi |
| Jazzie Pools | 5.0★ (2) | 23 mi |
| Jupiter Pools | 5.0★ (2) | 33 mi |
| K&D Pools | 5.0★ (2) | 39 mi |
| Maryland Pool Builders | 5.0★ (2) | 17 mi |
| Maryland Pool Builders | 5.0★ (2) | 26 mi |
| MR Splash Pool Service | 5.0★ (2) | 22 mi |
| Pools & Ponds Llc | 3.0★ (2) | 12 mi |
| Premier Swimming Pool Products | 1.0★ (1) | 15 mi |
| Primavera Pool Services | 5.0★ (1) | 24 mi |
| R+R Pools and Spas | 5.0★ (1) | 18 mi |
| Robinson’s Restorations Inc | 5.0★ (2) | 34 mi |
| USA Pools - Delmarva | 3.0★ (2) | 8 mi |
How we ranked St. Charles pool builders
We scored 205 St. Charles 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 St. Charles 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 St. Charles: frequently asked questions
Who is the best pool builder in St. Charles?
By CR Score, the highest-ranked pool builder in St. Charles, MD is Capital Hot Tubs & Saunas – Fairfax with a CR Score of 61/100. It has 4.7★ from 389 Google reviews. It is open 7 days a week. Subcomm Pools (#2) and Countywide Pool Services (#3) follow. We ranked 205 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in St. Charles?
ContractorsRanked ranks 205 pool builders serving St. Charles, MD. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in St. Charles are open 24/7?
9 ranked pool builders in St. Charles post 24/7 hours. The highest-ranked is Finn's Pool & Spa Service (#8). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in St. Charles work on weekends?
105 of 205 ranked pool builders post Saturday hours and 37 post Sunday hours. The highest-ranked open Saturdays are Capital Hot Tubs & Saunas – Fairfax (#1), Subcomm Pools (#2) and Marlboro Swimming Pool Supply (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do St. Charles pool builders have?
The median Google rating among 205 rated pool builders in St. Charles is 4.7★, with a median of 21 reviews. Capital Hot Tubs & Saunas – Fairfax has the most, 389 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 St. Charles count in this ranking?
Yes, if they are within 40 mi of the St. Charles 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 St. Charles
- November 2026: CR Scores recalculated for 205 pool builders serving St. Charles.
- November 2026: 3 duplicate listings merged.
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