121 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Prospect: A & A Basement Waterproofing, CR Score 91/100; 5.0★ from 128 Google reviews; open 24/7.
Best for emergencies (open 24/7): Eastern Waterproofing Co Inc, posts 24/7 hours; ranked #2 of 121.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 121 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
121 Prospect foundation repair companies are ranked here by CR Score, from 8 published factors. 24 are open 24/7, 81 open Saturdays and 48 open Sundays, based on posted hours. The median Google rating is 4.9★ across 121 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & A Basement Waterproofing | 91 | 5.0★ (128) | Cheshire Village, 6 mi away | 24/7 | Overall |
| 2 | Eastern Waterproofing Co Inc | 86 | 4.9★ (111) | Manchester, 30 mi away | 24/7 | Emergencies |
| 3 | United Waterproofing | 86 | 4.9★ (86) | Ridgefield, 29 mi away | 24/7 | — |
| 4 | Basement Boss | 85 | 4.9★ (34) | Bethel, 5 mi away | 24/7 | — |
| 5 | A DeLuca Basement Waterproofing | 85 | 4.8★ (16) | Branford, 15 mi away | 24/7 | — |
| 6 | Whole Basement Waterproofing Hartford CT | 84 | 5.0★ (15) | Hartford, 23 mi away | 24/7 | — |
| 7 | Connecticut Basement Systems | 83 | 4.8★ (1,655) | Seymour, 9 mi away | — | Most reviews |
| 8 | Empire Construction Waterproofing, LLC | 83 | 5.0★ (20) | Oxford, 12 mi away | Sat · Sun | — |
| 9 | The Builders & Cleaners | 82 | 4.9★ (120) | West Haven, 14 mi away | 24/7 | — |
| 10 | JLB Masonry & Waterproofing, Basement Repair, Chimney Repair | 82 | 5.0★ (106) | Windsor Locks, 35 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 5.0★ from 128 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Manchester, 30 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 111 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ridgefield, 29 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 86 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bethel, 5 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 6 of 8 factors; credentials and recency not yet collected.
Based in Branford, 15 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hartford, 23 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Seymour, 9 mi away
Ranked #7 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most Google reviews on this list (1,655).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oxford, 12 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Haven, 14 mi away
Ranked #9 because of its Google rating and availability: 4.9★ from 120 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Windsor Locks, 35 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 106 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in North Haven, 11 mi away
Ranked #11 because of its Google rating and review volume: 4.9★ from 390 Google reviews, 390 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waterbury, 5 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Hartford, 24 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Farmington, 19 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 17 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Torrington, 21 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
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 on 6 of 8 factors; credentials and recency not yet collected.
Based in Danbury, 28 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 91 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cromwell, 19 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bristol, 11 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 27 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Hartford, 25 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Stratford, 23 mi away
Ranked #21 because of its Google rating and availability: 4.8★ from 69 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Britain, 16 mi away
Ranked #22 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bristol, 20 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Waterproofing service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Wolcott, 5 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Foundation”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Jefferson, 38 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Prospect. 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 121 Prospect foundation repair companies on 8 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. Unknown factors are left out of the score, 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 Prospect data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |