524 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South River: Groundworks, CR Score 63/100; 4.9★ from 586 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): B Altmans Waterproofing, posts 24/7 hours; ranked #4 of 524.
Most-reviewed: Quality 1st Basement Systems, 1,961 Google reviews at 4.8★, the most of 524 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
524 South River foundation repair companies are ranked here by CR Score, from ten published factors. 131 are open 24/7, 415 open Saturdays and 300 open Sundays, based on posted hours. The median Google rating is 5.0★ across 524 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Groundworks | 63 | 4.9★ (586) | South Plainfield, 8 mi away | Sat · Sun · Evenings | Overall |
| 2 | Blue Umbrella Waterproofing | 62 | 5.0★ (412) | Cranford, 15 mi away | Sat · Sun · Evenings | — |
| 3 | Quality 1st Basement Systems | 61 | 4.8★ (1,961) | East Brunswick, 9 mi away | — | Most reviews |
| 4 | B Altmans Waterproofing | 60 | 4.8★ (136) | Staten Island, 18 mi away | 24/7 | Emergencies |
| 5 | Pure Service Pro | 60 | 4.9★ (250) | East Hanover, 29 mi away | 24/7 | — |
| 6 | ARD Waterproofing | 60 | 5.0★ (146) | Caldwell, 28 mi away | 24/7 | — |
| 7 | A-1 Basement Solutions | 60 | 4.9★ (320) | Berkeley Heights, 15 mi away | Sat · Evenings | — |
| 8 | United Waterproofing | 59 | 5.0★ (156) | Dover, 33 mi away | 24/7 | — |
| 9 | HiTek Basement Waterproofing Staten Island | 59 | 5.0★ (46) | Staten Island, 18 mi away | 24/7 | — |
| 10 | StrongBuild Masonry & Construction, Chimney repair, Foundation Waterproofing | 59 | 5.0★ (72) | Jersey City, 24 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 586 Google reviews, listed on Google as “Waterproofing service”.
Based in Cranford, 15 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 412 Google reviews, listed on Google as “Waterproofing service”.
Based in East Brunswick, 9 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 1,961 Google reviews, the most in South River.
Based in Staten Island, 18 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 136 Google reviews, listed on Google as “Waterproofing service”.
Based in East Hanover, 29 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 250 Google reviews, listed on Google as “Waterproofing service”.
Based in Caldwell, 28 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 146 Google reviews, listed on Google as “Waterproofing service”.
Based in Berkeley Heights, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Waterproofing service”.
Based in Dover, 33 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 156 Google reviews, listed on Google as “Waterproofing service”.
Based in Staten Island, 18 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Waterproofing service”.
Based in Jersey City, 24 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “Waterproofing service”.
Based in Bridgewater, 31 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 99 Google reviews, listed on Google as “Waterproofing service”.
Based in Rockaway, 32 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 129 Google reviews, listed on Google as “Waterproofing service”.
Based in Bridgewater, 15 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
Based in Bergenfield, 38 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Waterproofing service”.
Based in Bernardsville, 25 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based in East Brunswick, 4 mi away
Ranked #16 because of its Google rating and review volume: 5.0★ from 185 Google reviews.
Based in Avenel, 11 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 28 Google reviews, listed on Google as “Waterproofing service”.
Based in Staten Island, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Waterproofing service”.
Based in Matawan, 9 mi away
Ranked #19 because of its Google rating and trade focus: 4.3★ from 73 Google reviews, listed on Google as “Waterproofing service”.
Based in Clark, 14 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Waterproofing service”.
Based in Jamaica, 35 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based in East Brunswick, 5 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 137 Google reviews.
Based in Freehold, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 68 Google reviews, listed on Google as “Waterproofing service”.
Based in Carteret, 15 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Waterproofing service”.
Based in Scotch Plains, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 8 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 524 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 |
|---|---|---|
| 9ine Construction Service LLC | 4.7★ (3) | In South River |
| Advance Tech Waterproofing | 5.0★ (2) | 14 mi |
| Alert Roofing Construction | 5.0★ (2) | 21 mi |
| Apolo Contractor Corp | 4.5★ (2) | 24 mi |
| C&S Foundations Inc. | 3.0★ (2) | 22 mi |
| E. ANDRÉ CONSTRUCTION SERVICES | 4.7★ (17) | In South River |
| GMT Construction LLC | 5.0★ (2) | In South River |
| Go Pro Basements | 3.0★ (2) | 15 mi |
| Interstate Contracting And Restoration | 5.0★ (2) | 9 mi |
| Master Kairos Construction | 4.1★ (7) | In South River |
| New Bridge Contracting Corp | 5.0★ (2) | 23 mi |
| Nu-Look Home Improvement | 3.0★ (2) | 13 mi |
| Rashi Construction Corporation | In South River | |
| Riviera Home Builders | 5.0★ (2) | 18 mi |
| Ronaldaspaltpaving | 5.0★ (1) | In South River |
| Roofing Siding Acero | 3.0★ (2) | 23 mi |
| SERVPRO of East Brunswick / Princeton Meadows | 4.7★ (52) | In South River |
| SPE CONTRACTING LLC | 5.0★ (14) | In South River |
| Stephen DM General Construction LLC | In South River | |
| Vieira contracting | 5.0★ (13) | In South River |
National price ranges in USD, not adjusted for South River. 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 524 South River 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 South River 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 |