211 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Mahopac: HV Ground Solutions, CR Score 62/100; 5.0★ from 175 Google reviews; open 24/7.
Best for emergencies (open 24/7): United Waterproofing, posts 24/7 hours; ranked #2 of 211.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 211 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
211 Mahopac foundation repair companies are ranked here by CR Score, from ten published factors. 60 are open 24/7, 164 open Saturdays and 120 open Sundays, based on posted hours. The median Google rating is 5.0★ across 211 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | HV Ground Solutions | 62 | 5.0★ (175) | Wappingers Falls, 19 mi away | 24/7 | Overall |
| 2 | United Waterproofing | 61 | 4.9★ (86) | Ridgefield, 13 mi away | 24/7 | Emergencies |
| 3 | Bonded Waterproofing Solutions | 59 | 5.0★ (130) | Bergenfield, 34 mi away | 24/7 | — |
| 4 | A & A Basement Waterproofing | 58 | 5.0★ (128) | Cheshire Village, 38 mi away | 24/7 | — |
| 5 | Full Basement Waterproofing Westchester | 58 | 5.0★ (26) | Briarcliff Manor, 20 mi away | 24/7 | — |
| 6 | Connecticut Basement Systems | 57 | 4.8★ (1,655) | Seymour, 35 mi away | — | Most reviews |
| 7 | Apex Developement Asphalt Paving | 57 | 4.6★ (17) | Lake Carmel, 10 mi away | Sat · Sun | — |
| 8 | New York Basement Waterproofing Technologies | 57 | 5.0★ (11) | West Point, 20 mi away | 24/7 | — |
| 9 | Budget Dry Basement Waterproofing | 57 | 5.0★ (101) | Danbury, 14 mi away | — | — |
| 10 | Rain King Waterproofing | 56 | 4.6★ (29) | Rye, 27 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: 5.0★ from 175 Google reviews, listed on Google as “Waterproofing service”.
Based in Ridgefield, 13 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 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 Cheshire Village, 38 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
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 Seymour, 35 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Mahopac.
Based in Lake Carmel, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 17 Google reviews, listed on Google as “Foundation”.
Based in West Point, 20 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
Based in Danbury, 14 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Waterproofing service”.
Based in Rye, 27 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 29 Google reviews, listed on Google as “Waterproofing service”.
Based in New Windsor, 17 mi away
Ranked #11 because of its Google rating and review volume: 4.9★ from 596 Google reviews.
Based in Bethel, 17 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Tarrytown, 22 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based in Greenburgh, 18 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
Based in Danbury, 14 mi away
Ranked #15 because of its Google rating and review volume: 5.0★ from 91 Google reviews.
Based in Monsey, 24 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 23 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based in Greenburgh, 20 mi away
Ranked #18 because of its Google rating and review volume: 5.0★ from 100 Google reviews.
Based in Oxford, 30 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based in Stamford, 24 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethel, 36 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based in Goshen, 33 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 263 Google reviews.
Based in Yonkers, 30 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Waterproofing service”.
Based in Greenburgh, 21 mi away
Ranked #24 because of its Google rating and trade focus: 3.3★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based in New Rochelle, 37 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 24 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 211 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 |
|---|---|---|
| AAA Established Construction | 5.0★ (2) | 37 mi |
| AG General Construction Service | 5.0★ (1) | In Mahopac |
| AM Basement Solutions | 5.0★ (2) | 14 mi |
| American Dry Basement Systems | 5.0★ (2) | 24 mi |
| American Dry Basement Systems LLC | 5.0★ (2) | 15 mi |
| ARID Basement Waterproofing | 5.0★ (2) | 33 mi |
| C-Rod Foundations LLC | 5.0★ (2) | 16 mi |
| County Comfort Home Solutions | 5.0★ (2) | 15 mi |
| Crown Waterproofing | 4.5★ (2) | 33 mi |
| ECF Concrete Pumping | 5.0★ (2) | In Mahopac |
| Gem Roofing & Waterproofing | 4.5★ (2) | 38 mi |
| I.K Construction | 5.0★ (2) | 36 mi |
| NPC General Construction LLC | 5.0★ (2) | 35 mi |
| NYC DOB Local Law 11 Facade Repairs Contractors | 5.0★ (2) | 32 mi |
| Quality Masonry And Foundation Repair | 5.0★ (2) | 31 mi |
| R&J Custom Concrete | 4.0★ (2) | In Mahopac |
| Rain King Waterproofing | 3.5★ (2) | In Mahopac |
| Rain King Waterproofing, Inc. | 5.0★ (2) | 16 mi |
| US Waterproofing | In Mahopac | |
| ValueDry Basement Waterproofing & Remodeling | 4.0★ (2) | 32 mi |
National price ranges in USD, not adjusted for Mahopac. 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 211 Mahopac 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 Mahopac 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 |