140 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hamden: A & A Basement Waterproofing, CR Score 63/100; 5.0★ from 128 Google reviews; open 24/7.
Best for emergencies (open 24/7): A DeLuca Basement Waterproofing, posts 24/7 hours; ranked #3 of 140.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 140 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
140 Hamden foundation repair companies are ranked here by CR Score, from ten published factors. 27 are open 24/7, 98 open Saturdays and 57 open Sundays, based on posted hours. The median Google rating is 4.9★ across 140 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & A Basement Waterproofing | 63 | 5.0★ (128) | Cheshire Village, 5 mi away | 24/7 | Overall |
| 2 | Connecticut Basement Systems | 61 | 4.8★ (1,655) | Seymour, 8 mi away | — | Most reviews |
| 3 | A DeLuca Basement Waterproofing | 59 | 4.8★ (16) | Branford, 7 mi away | 24/7 | Emergencies |
| 4 | Eastern Waterproofing Co Inc | 58 | 4.9★ (111) | Manchester, 33 mi away | 24/7 | — |
| 5 | United Waterproofing | 58 | 4.9★ (86) | Ridgefield, 31 mi away | 24/7 | — |
| 6 | Basement Boss | 58 | 4.9★ (34) | Bethel, 11 mi away | 24/7 | — |
| 7 | Budget Dry Basement Waterproofing | 58 | 4.8★ (435) | Wallingford Center, 18 mi away | — | — |
| 8 | Groundworks | 57 | 4.9★ (390) | North Haven, 3 mi away | Sat · Sun · Evenings | — |
| 9 | Empire Construction Waterproofing, LLC | 57 | 5.0★ (20) | Oxford, 14 mi away | Sat · Sun | — |
| 10 | Alpha Basement Waterproofing Connecticut | 57 | 5.0★ (37) | Waterbury, 13 mi away | Sat | — |
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, 8 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Hamden.
Based in Branford, 7 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Waterproofing service”.
Based in Manchester, 33 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 111 Google reviews, listed on Google as “Waterproofing service”.
Based in Ridgefield, 31 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 in Bethel, 11 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 Wallingford Center, 18 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 435 Google reviews, listed on Google as “Waterproofing service”.
Based in North Haven, 3 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 390 Google reviews.
Based in Oxford, 14 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based in Waterbury, 13 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based in West Haven, 8 mi away
Ranked #11 because of its Google rating and review volume: 4.9★ from 120 Google reviews.
Based in Hamden
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based in Hartford, 26 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 Bristol, 10 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 27 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 East Hartford, 28 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based in Centereach, 38 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Construction company”.
Based in Danbury, 29 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethel, 28 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Windsor Locks, 40 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Concrete contractor”.
Based in Torrington, 30 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based in Branford, 13 mi away
Ranked #22 because of its Google rating and review volume: 4.9★ from 935 Google reviews.
Based in Newington, 21 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Waterproofing service”.
Based in New Britain, 20 mi away
Ranked #24 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based in West Haven, 9 mi away
Ranked #25 because of its Google rating and review volume: 4.8★ from 68 Google reviews.
National price ranges in USD, not adjusted for Hamden. 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 140 Hamden 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 Hamden 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 |