115 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Plymouth: A & A Basement Waterproofing, CR Score 61/100; 5.0★ from 128 Google reviews; open 24/7.
Best for emergencies (open 24/7): Eastern Waterproofing Co Inc, posts 24/7 hours; ranked #3 of 115.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 115 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
115 Plymouth foundation repair companies are ranked here by CR Score, from ten published factors. 23 are open 24/7, 74 open Saturdays and 42 open Sundays, based on posted hours. The median Google rating is 4.9★ across 115 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & A Basement Waterproofing | 61 | 5.0★ (128) | Cheshire Village, 18 mi away | 24/7 | Overall |
| 2 | Connecticut Basement Systems | 59 | 4.8★ (1,655) | Seymour, 20 mi away | — | Most reviews |
| 3 | Eastern Waterproofing Co Inc | 59 | 4.9★ (111) | Manchester, 27 mi away | 24/7 | Emergencies |
| 4 | Basement Boss | 58 | 4.9★ (34) | Bethel, 12 mi away | 24/7 | — |
| 5 | United Waterproofing | 58 | 4.9★ (86) | Ridgefield, 33 mi away | 24/7 | — |
| 6 | Alpha Basement Waterproofing Connecticut | 57 | 5.0★ (37) | Waterbury, 8 mi away | Sat | — |
| 7 | Whole Basement Waterproofing Hartford CT | 57 | 5.0★ (15) | Hartford, 20 mi away | 24/7 | — |
| 8 | Wet Basement Waterproofing | 57 | 5.0★ (13) | Torrington, 9 mi away | Sat · Sun · Evenings | — |
| 9 | Residential ResQ LLC | 56 | 4.9★ (46) | Wolcott, 7 mi away | Evenings | — |
| 10 | HCW Basement Waterproofing | 56 | 4.9★ (24) | East Hartford, 20 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Seymour, 20 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Plymouth.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 27 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 111 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bethel, 12 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ridgefield, 33 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterbury, 8 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hartford, 20 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Torrington, 9 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wolcott, 7 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Foundation”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Hartford, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oxford, 20 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Branford, 27 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windsor Locks, 28 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wallingford Center, 34 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 435 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bethel, 24 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington, 14 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newington, 16 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bristol, 19 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 27 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Britain, 15 mi away
Ranked #19 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Haven, 23 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 390 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Danbury, 29 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bristol, 6 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Hartford, 22 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Bristol, 18 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Waterproofing service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lake Carmel, 31 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Foundation”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Plymouth. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | $2,225 | $5,174 | $8,133 | Per project: typical range of customer-reported repairs. US national range | October 2026 |
We scored 115 Plymouth foundation repair companies 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 October 22, 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 Plymouth 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 |