194 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Trumbull: A & A Basement Waterproofing, CR Score 62/100; 5.0★ from 128 Google reviews; open 24/7.
Best for emergencies (open 24/7): United Waterproofing, posts 24/7 hours; ranked #2 of 194.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 194 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
194 Trumbull foundation repair companies are ranked here by CR Score, from ten published factors. 47 are open 24/7, 143 open Saturdays and 90 open Sundays, based on posted hours. The median Google rating is 4.9★ across 194 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & A Basement Waterproofing | 62 | 5.0★ (128) | Cheshire Village, 16 mi away | 24/7 | Overall |
| 2 | United Waterproofing | 61 | 4.9★ (86) | Ridgefield, 16 mi away | 24/7 | Emergencies |
| 3 | Connecticut Basement Systems | 61 | 4.8★ (1,655) | Seymour, 13 mi away | — | Most reviews |
| 4 | A DeLuca Basement Waterproofing | 58 | 4.8★ (16) | Branford, 16 mi away | 24/7 | — |
| 5 | Empire Construction Waterproofing, LLC | 57 | 5.0★ (20) | Oxford, 11 mi away | Sat · Sun | — |
| 6 | Basement Boss | 57 | 4.9★ (34) | Bethel, 19 mi away | 24/7 | — |
| 7 | Chris Landscaping & Basement Waterproofing corp | 57 | 5.0★ (74) | West Hills, 31 mi away | Sat · Sun | — |
| 8 | Full Basement Waterproofing Westchester | 56 | 5.0★ (26) | Briarcliff Manor, 32 mi away | 24/7 | — |
| 9 | Pappy's Ultimate Construction, Drainage & Waterproofing | 56 | 5.0★ (102) | Centereach, 25 mi away | 24/7 | — |
| 10 | Budget Dry Basement Waterproofing | 56 | 5.0★ (101) | Danbury, 17 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 Ridgefield, 16 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Waterproofing service”.
Based in Seymour, 13 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Trumbull.
Based in Branford, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Waterproofing service”.
Based in Oxford, 11 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 Bethel, 19 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based in West Hills, 31 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Waterproofing service”.
Based in Briarcliff Manor, 32 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Waterproofing service”.
Based in Centereach, 25 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Construction company”.
Based in Danbury, 17 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based in Rye, 31 mi away
Ranked #11 because of its Google rating and trade focus: 4.6★ from 29 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based in Stratford, 4 mi away
Ranked #13 because of its Google rating and review volume: 4.8★ from 69 Google reviews.
Based in West Haven, 13 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 120 Google reviews.
Based in Bethel, 20 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 in Wallingford Center, 34 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 435 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 21 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based in Danbury, 16 mi away
Ranked #18 because of its Google rating and review volume: 5.0★ from 91 Google reviews.
Based in Branford, 6 mi away
Ranked #19 because of its Google rating and review volume: 4.9★ from 935 Google reviews.
Based in North Haven, 20 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 390 Google reviews.
Based in Melville, 32 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Waterproofing service”.
Based in Waterbury, 25 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based in Port Jefferson, 21 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based in Lake Carmel, 25 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Foundation”.
Based in Hicksville, 38 mi away
Ranked #25 because of its Google rating and trade focus: 4.5★ from 23 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 194 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 |
|---|---|---|
| Affordable Norwalk Roofers | 5.0★ (1) | 15 mi |
| AM Basement Solutions | 5.0★ (2) | 18 mi |
| American Dry Basement Systems | 5.0★ (2) | 25 mi |
| American Dry Basement Systems LLC | 5.0★ (2) | 16 mi |
| C-Rod Foundations LLC | 5.0★ (2) | 19 mi |
| County Comfort Home Solutions | 5.0★ (2) | 36 mi |
| Doss Foundations | 5.0★ (1) | 12 mi |
| Eagle Basement Waterproofing | 5.0★ (2) | 34 mi |
| Ever Build Masonry and Waterproofing | 5.0★ (2) | 39 mi |
| High Level Construction LLC | 5.0★ (14) | In Trumbull |
| LJM Foundations & Masonry, LLC | 5.0★ (2) | 29 mi |
| Maintenance Experts of Long Island | 3.0★ (2) | 30 mi |
| MD DESIGN & BUILD LLC | In Trumbull | |
| New Haven Roofing LLC | 5.0★ (1) | 8 mi |
| Norwalk Marine Contractors Inc | 5.0★ (1) | 6 mi |
| Quality Masonry And Foundation Repair | 5.0★ (2) | 5 mi |
| Rain King Waterproofing | 3.5★ (2) | 27 mi |
| Rain King Waterproofing, Inc. | 5.0★ (2) | 14 mi |
| Torres Line Construction | 5.0★ (2) | 38 mi |
| ValueDry Basement Waterproofing & Remodeling | 4.0★ (2) | 5 mi |
National price ranges in USD, not adjusted for Trumbull. 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 194 Trumbull 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 Trumbull 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 |