138 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Coram: Pappy's Ultimate Construction, Drainage & Waterproofing, CR Score 87/100; 5.0★ from 102 Google reviews; open 24/7.
Best for emergencies (open 24/7): A & A Basement Waterproofing, posts 24/7 hours; ranked #3 of 138.
Most-reviewed: Connecticut Basement Systems, 1,655 Google reviews at 4.8★, the most of 138 ranked; ranked #36.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
138 Coram foundation repair companies are ranked here by CR Score, from 8 published factors. 34 are open 24/7, 105 open Saturdays and 72 open Sundays, based on posted hours. The median Google rating is 5.0★ across 138 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pappy's Ultimate Construction, Drainage & Waterproofing | 87 | 5.0★ (102) | Centereach, 8 mi away | 24/7 | Overall |
| 2 | Chris Landscaping & Basement Waterproofing corp | 87 | 5.0★ (74) | West Hills, 8 mi away | Sat · Sun | — |
| 3 | A & A Basement Waterproofing | 86 | 5.0★ (128) | Cheshire Village, 37 mi away | 24/7 | Emergencies |
| 4 | APM O’Neill and Sons | 85 | 4.9★ (126) | Medford, 3 mi away | 24/7 | — |
| 5 | New York Waterproofing - Foundation Basement Waterproofing Solutions Contractors | 84 | 5.0★ (3) | Port Jefferson, 7 mi away | 24/7 | — |
| 6 | Long Island Basement Waterproofing Pros | 84 | 5.0★ (15) | Amityville, 3 mi away | Sat · Sun · Evenings | — |
| 7 | Apollo Basement Waterproofing Queens | 84 | 5.0★ (13) | Forest Hills, 5 mi away | Sat · Sun · Evenings | — |
| 8 | Magic Basement Services | 83 | 5.0★ (17) | Nesconset, 8 mi away | — | — |
| 9 | Vulcan Basement Waterproofing | 83 | 4.5★ (23) | Hicksville, 28 mi away | 24/7 | — |
| 10 | A DeLuca Basement Waterproofing | 83 | 4.8★ (16) | Branford, 30 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 in Coram
Based in Centereach, 8 mi away
Ranked #1 because of its Google rating and availability: 5.0★ from 102 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Hills, 8 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cheshire Village, 37 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 128 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Medford, 3 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 126 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Jefferson, 7 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amityville, 3 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Forest Hills, 5 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Nesconset, 8 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Hicksville, 28 mi away
Ranked #9 because of its Google rating and availability: 4.5★ from 23 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Branford, 30 mi away
Ranked #10 because of its Google rating and availability: 4.8★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ronkonkoma, 7 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 53 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sayville, 10 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbury, 30 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 93 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hell's Kitchen, 3 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Foundation”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rye, 37 mi away
Ranked #15 because of its Google rating and availability: 4.6★ from 29 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Huntington, 23 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Coram
Ranked #17 because of its Google rating and review volume: 5.0★ from 408 Google reviews, 408 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bohemia, 9 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Garden City Park, 36 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 115 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Babylon, 22 mi away
Ranked #20 because of its Google rating and availability: 5.0★ from 68 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Terryville, 5 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 89 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Stamford, 30 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Melville, 24 mi away
Ranked #23 because of its Google rating and availability: 4.9★ from 95 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Massapequa, 27 mi away
Ranked #24 because of its Google rating and review volume: 5.0★ from 479 Google reviews, 479 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Maspeth, 5 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 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 138 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.
National price ranges in USD, not adjusted for Coram. 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 138 Coram foundation repair companies on 8 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. Unknown factors are left out of the score, 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 Coram data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |