371 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Norwalk: United Waterproofing, CR Score 61/100; 4.9★ from 86 Google reviews; open 24/7.
Best for emergencies (open 24/7): A & A Basement Waterproofing, posts 24/7 hours; ranked #2 of 371.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 371 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
371 Norwalk foundation repair companies are ranked here by CR Score, from ten published factors. 89 are open 24/7, 295 open Saturdays and 216 open Sundays, based on posted hours. The median Google rating is 5.0★ across 371 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | United Waterproofing | 61 | 4.9★ (86) | Ridgefield, 15 mi away | 24/7 | Overall |
| 2 | A & A Basement Waterproofing | 60 | 5.0★ (128) | Cheshire Village, 29 mi away | 24/7 | Emergencies |
| 3 | Bonded Waterproofing Solutions | 59 | 5.0★ (130) | Bergenfield, 34 mi away | 24/7 | — |
| 4 | Connecticut Basement Systems | 58 | 4.8★ (1,655) | Seymour, 26 mi away | — | Most reviews |
| 5 | Full Basement Waterproofing Westchester | 58 | 5.0★ (26) | Briarcliff Manor, 20 mi away | 24/7 | — |
| 6 | Rain King Waterproofing | 58 | 4.6★ (29) | Rye, 17 mi away | 24/7 | — |
| 7 | We Fix Cracks | 58 | 4.8★ (18) | Stamford, 6 mi away | Sat · Sun | — |
| 8 | Chris Landscaping & Basement Waterproofing corp | 58 | 5.0★ (74) | West Hills, 26 mi away | Sat · Sun | — |
| 9 | HRC Waterproofing | 57 | 4.9★ (77) | Jamaica, 37 mi away | 24/7 | — |
| 10 | Rain King Waterproofing | 57 | 5.0★ (4) | Stamford, 7 mi away | 24/7 | — |
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: 4.9★ from 86 Google reviews, listed on Google as “Waterproofing service”.
Based in Cheshire Village, 29 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
Based in Bergenfield, 34 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Waterproofing service”.
Based in Seymour, 26 mi away
Ranked #4 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Norwalk.
Based in Briarcliff Manor, 20 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Waterproofing service”.
Based in Rye, 17 mi away
Ranked #6 because of its Google rating and trade focus: 4.6★ from 29 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 6 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based in West Hills, 26 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Waterproofing service”.
Based in Jamaica, 37 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 7 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based in Centereach, 21 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Construction company”.
Based in Garden City Park, 29 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 115 Google reviews, listed on Google as “Waterproofing service”.
Based in Melville, 21 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Waterproofing service”.
Based in Hicksville, 26 mi away
Ranked #14 because of its Google rating and trade focus: 4.5★ from 23 Google reviews, listed on Google as “Waterproofing service”.
Based in Danbury, 19 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based in Albertson, 27 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 215 Google reviews, listed on Google as “Waterproofing service”.
Based in Branford, 29 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Waterproofing service”.
Based in Greenburgh, 17 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
Based in Carlstadt, 39 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 42 Google reviews, listed on Google as “Waterproofing service”.
Based in Oxford, 23 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based in Tarrytown, 23 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based in Westbury, 26 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 93 Google reviews, listed on Google as “Roofing contractor”.
Based in Huntington, 16 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 Greenburgh, 10 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Waterproofing service”.
Based in Greenburgh, 16 mi away
Ranked #25 because of its Google rating and review volume: 5.0★ from 100 Google reviews.
#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 371 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 |
|---|---|---|
| A.M. Santella Construction Company Inc. | 4.3★ (6) | In Norwalk |
| ADR Contracting | 4.5★ (2) | In Norwalk |
| Conte Co LLC | 4.0★ (4) | In Norwalk |
| Contemporary Tiny Homes | Connecticut ADU Builder | 5.0★ (4) | In Norwalk |
| Domus Constructors LLC | 5.0★ (7) | In Norwalk |
| GEM Masonry LLC | 5.0★ (5) | In Norwalk |
| Green Solutions Landscaping LLC | 4.9★ (40) | In Norwalk |
| L.A. IACONO, LLC | 5.0★ (3) | In Norwalk |
| Leon Restoration Inc | 5.0★ (20) | In Norwalk |
| Level Up - Masonry Work | 4.9★ (45) | In Norwalk |
| M. Rivas Masonry & Paving LLC | 5.0★ (14) | In Norwalk |
| Masonry Solutions LLC | 4.9★ (68) | In Norwalk |
| MMA Dryer Vent Cleaning Services Norwalk, CT | 4.9★ (22) | In Norwalk |
| Norwalk Masonry | 5.0★ (18) | In Norwalk |
| Paramount Sealcoating | 5.0★ (4) | In Norwalk |
| Pink's Concrete Design | 4.6★ (18) | In Norwalk |
| Sayayin Painting LLC | 5.0★ (21) | In Norwalk |
| Stone By Ric | 4.8★ (19) | In Norwalk |
| WEGLARZ CONSTRUCTION INC | 1.0★ (2) | In Norwalk |
| Zveno Electric | 5.0★ (2) | In Norwalk |
National price ranges in USD, not adjusted for Norwalk. 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 371 Norwalk 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 Norwalk 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 |