461 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Northport: Chris Landscaping & Basement Waterproofing corp, CR Score 60/100; 5.0★ from 74 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Bonded Waterproofing Solutions, posts 24/7 hours; ranked #2 of 461.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 461 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
461 Northport foundation repair companies are ranked here by CR Score, from ten published factors. 119 are open 24/7, 373 open Saturdays and 284 open Sundays, based on posted hours. The median Google rating is 5.0★ across 461 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Chris Landscaping & Basement Waterproofing corp | 60 | 5.0★ (74) | West Hills, 13 mi away | Sat · Sun | Overall |
| 2 | Bonded Waterproofing Solutions | 59 | 5.0★ (130) | Bergenfield, 34 mi away | 24/7 | Emergencies |
| 3 | Building Structures Unlimited Inc. | 59 | 5.0★ (69) | Melville, 7 mi away | Sat | — |
| 4 | Pappy's Ultimate Construction, Drainage & Waterproofing | 59 | 5.0★ (102) | Centereach, 10 mi away | 24/7 | — |
| 5 | HRC Waterproofing | 58 | 4.9★ (77) | Jamaica, 28 mi away | 24/7 | — |
| 6 | United Waterproofing | 58 | 4.9★ (86) | Ridgefield, 30 mi away | 24/7 | — |
| 7 | A & A Basement Waterproofing | 58 | 5.0★ (128) | Cheshire Village, 40 mi away | 24/7 | — |
| 8 | BOCCIA - Waterproofing & Masonry Specialists | 58 | 4.7★ (115) | Garden City Park, 20 mi away | Sat · Sun · Evenings | — |
| 9 | Vulcan Basement Waterproofing | 58 | 4.5★ (23) | Hicksville, 14 mi away | 24/7 | — |
| 10 | Rain King Waterproofing | 58 | 4.6★ (29) | Rye, 19 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Northport
Based in West Hills, 13 mi away
Ranked #1 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bergenfield, 34 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Melville, 7 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Centereach, 10 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Jamaica, 28 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ridgefield, 30 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire Village, 40 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Garden City Park, 20 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 115 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hicksville, 14 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 23 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rye, 19 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Briarcliff Manor, 27 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Westbury, 15 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 93 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albertson, 18 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 215 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huntington, 5 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Seymour, 37 mi away
Ranked #15 because of its Google rating and review volume: 4.8★ from 1,655 Google reviews, the most in Northport.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stamford, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Massapequa, 17 mi away
Ranked #17 because of its Google rating and review volume: 5.0★ from 479 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Nesconset, 10 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Stamford, 14 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sayville, 18 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carlstadt, 37 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 42 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Caldwell, 38 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Melville, 10 mi away
Ranked #23 because of its Google rating and review volume: 4.9★ from 95 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Glen Cove, 15 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Jefferson, 15 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 461 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 |
|---|---|---|
| Ajrin Construction Inc. | 5.0★ (2) | 33 mi |
| American Dry Basement Systems | 5.0★ (2) | 16 mi |
| Aslam Roofing and Waterproofing. | 5.0★ (2) | 25 mi |
| Crown Waterproofing | 4.5★ (2) | 26 mi |
| Diamond NY Construction | 3.0★ (2) | 31 mi |
| I.K Construction | 5.0★ (2) | 27 mi |
| Innovate Builders Inc | 3.0★ (2) | 23 mi |
| Maestro Builders Corporation | 5.0★ (2) | 32 mi |
| Maintenance Experts of Long Island | 3.0★ (2) | 14 mi |
| New Life Mason & Waterproofing | 4.5★ (2) | 31 mi |
| NYC DOB Local Law 11 Facade Repairs Contractors | 5.0★ (2) | 28 mi |
| Quality Masonry And Foundation Repair | 5.0★ (2) | 21 mi |
| Rain King Waterproofing, Inc. | 5.0★ (2) | 32 mi |
| Shoot Installers INC. | 5.0★ (2) | 32 mi |
| Torres Line Construction | 5.0★ (2) | 15 mi |
| Trusted Men | 5.0★ (2) | In Northport |
| Tur Contracting Inc. | 3.0★ (2) | 32 mi |
| ValueDry Basement Waterproofing & Remodeling | 4.0★ (2) | 21 mi |
| Waterproofing Restoration of Baldwin | 5.0★ (2) | 23 mi |
| William Kollmer Contracting | 5.0★ (1) | In Northport |
National price ranges in USD, not adjusted for Northport. 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 461 Northport 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 Northport 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 |