150 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Seymour: A & A Basement Waterproofing, CR Score 64/100; 5.0★ from 128 Google reviews; open 24/7.
Best for emergencies (open 24/7): United Waterproofing, posts 24/7 hours; ranked #3 of 150.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 150 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
150 Seymour foundation repair companies are ranked here by CR Score, from ten published factors. 29 are open 24/7, 109 open Saturdays and 64 open Sundays, based on posted hours. The median Google rating is 4.9★ across 150 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & A Basement Waterproofing | 64 | 5.0★ (128) | Cheshire Village, 4 mi away | 24/7 | Overall |
| 2 | Connecticut Basement Systems | 62 | 4.8★ (1,655) | Seymour | — | Most reviews |
| 3 | United Waterproofing | 60 | 4.9★ (86) | Ridgefield, 22 mi away | 24/7 | Emergencies |
| 4 | Basement Boss | 59 | 4.9★ (34) | Bethel, 7 mi away | 24/7 | — |
| 5 | Empire Construction Waterproofing, LLC | 58 | 5.0★ (20) | Oxford, 4 mi away | Sat · Sun | — |
| 6 | A DeLuca Basement Waterproofing | 58 | 4.8★ (16) | Branford, 11 mi away | 24/7 | — |
| 7 | Eastern Waterproofing Co Inc | 58 | 4.9★ (111) | Manchester, 38 mi away | 24/7 | — |
| 8 | Alpha Basement Waterproofing Connecticut | 57 | 5.0★ (37) | Waterbury, 13 mi away | Sat | — |
| 9 | Groundworks | 56 | 4.9★ (390) | North Haven, 11 mi away | Sat · Sun · Evenings | — |
| 10 | Budget Dry Basement Waterproofing | 56 | 4.8★ (435) | Wallingford Center, 27 mi away | — | — |
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.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
Based in Seymour
Ranked #2 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Seymour.
Based in Ridgefield, 22 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethel, 7 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 in Oxford, 4 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based in Branford, 11 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Waterproofing service”.
Based in Manchester, 38 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 111 Google reviews, listed on Google as “Waterproofing service”.
Based in Waterbury, 13 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based in North Haven, 11 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 390 Google reviews.
Based in Wallingford Center, 27 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 435 Google reviews, listed on Google as “Waterproofing service”.
Based in West Haven, 10 mi away
Ranked #11 because of its Google rating and review volume: 4.9★ from 120 Google reviews.
Based in Danbury, 20 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based in Hartford, 32 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethel, 19 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Wolcott, 13 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Foundation”.
Based in Hamden, 8 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based in Branford, 7 mi away
Ranked #17 because of its Google rating and review volume: 4.9★ from 935 Google reviews.
Based in Bristol, 18 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 in Centereach, 36 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Construction company”.
Based in Lake Carmel, 26 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Foundation”.
Based in East Hartford, 33 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based in Danbury, 21 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 91 Google reviews.
Based in Torrington, 28 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based in Stratford, 15 mi away
Ranked #24 because of its Google rating and review volume: 4.8★ from 69 Google reviews.
Based in Seymour
Ranked #25 because of its Google rating and trade focus: 3.9★ from 22 Google reviews, listed on Google as “Waterproofing service”.
#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 150 ranked foundation repair companies here; the rest are on their profiles.
20 more foundation repair companies 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 |
|---|---|---|
| AM Basement Solutions | 5.0★ (2) | 21 mi |
| American Dry Basement Systems | 5.0★ (2) | 36 mi |
| American Dry Basement Systems LLC | 5.0★ (2) | 19 mi |
| Attic Systems | 5.0★ (2) | In Seymour |
| C-Rod Foundations LLC | 5.0★ (2) | 19 mi |
| Craftsman Stone & Masonry | 4.9★ (76) | In Seymour |
| Dr. Energy Saver | 3.2★ (11) | In Seymour |
| Dr. Energy Saver Connecticut | 4.1★ (33) | In Seymour |
| Eagle Basement Waterproofing | 5.0★ (2) | 22 mi |
| Ever Build Masonry and Waterproofing | 5.0★ (2) | 26 mi |
| Illyrians Construction | In Seymour | |
| JABRY'S ROOFING | 5.0★ (2) | 31 mi |
| LJM Foundations & Masonry, LLC | 5.0★ (2) | 18 mi |
| New Haven Roofing LLC | 5.0★ (1) | 6 mi |
| Quality Masonry And Foundation Repair | 5.0★ (2) | 16 mi |
| Rain King Waterproofing | 3.5★ (2) | 34 mi |
| Rain King Waterproofing, Inc. | 5.0★ (2) | 18 mi |
| Sal Mangione & Sons Construction Co | 5.0★ (1) | In Seymour |
| Scholar Painting & Restoration | In Seymour | |
| ValueDry Basement Waterproofing & Remodeling | 4.0★ (2) | 16 mi |
National price ranges in USD, not adjusted for Seymour. 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 150 Seymour 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 Seymour 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 |