548 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Rahway: Blue Umbrella Waterproofing, CR Score 64/100; 5.0★ from 412 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): B Altmans Waterproofing, posts 24/7 hours; ranked #3 of 548.
Most-reviewed: Quality 1st Basement Systems, 1,961 Google reviews at 4.8★, the most of 548 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
548 Rahway foundation repair companies are ranked here by CR Score, from ten published factors. 149 are open 24/7, 441 open Saturdays and 335 open Sundays, based on posted hours. The median Google rating is 5.0★ across 548 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Blue Umbrella Waterproofing | 64 | 5.0★ (412) | Cranford, 4 mi away | Sat · Sun · Evenings | Overall |
| 2 | Groundworks | 63 | 4.9★ (586) | South Plainfield, 8 mi away | Sat · Sun · Evenings | — |
| 3 | B Altmans Waterproofing | 62 | 4.8★ (136) | Staten Island, 8 mi away | 24/7 | Emergencies |
| 4 | ARD Waterproofing | 62 | 5.0★ (146) | Caldwell, 16 mi away | 24/7 | — |
| 5 | Pure Service Pro | 62 | 4.9★ (250) | East Hanover, 19 mi away | 24/7 | — |
| 6 | A-1 Basement Solutions | 61 | 4.9★ (320) | Berkeley Heights, 4 mi away | Sat · Evenings | — |
| 7 | StrongBuild Masonry & Construction, Chimney repair, Foundation Waterproofing | 61 | 5.0★ (72) | Jersey City, 13 mi away | 24/7 | — |
| 8 | Quality 1st Basement Systems | 61 | 4.8★ (1,961) | East Brunswick, 12 mi away | — | Most reviews |
| 9 | HiTek Basement Waterproofing Staten Island | 61 | 5.0★ (46) | Staten Island, 10 mi away | 24/7 | — |
| 10 | United Waterproofing | 61 | 5.0★ (156) | Dover, 25 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 412 Google reviews, listed on Google as “Waterproofing service”.
Based in South Plainfield, 8 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 586 Google reviews, listed on Google as “Waterproofing service”.
Based in Staten Island, 8 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 136 Google reviews, listed on Google as “Waterproofing service”.
Based in Caldwell, 16 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 146 Google reviews, listed on Google as “Waterproofing service”.
Based in East Hanover, 19 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 Berkeley Heights, 4 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Waterproofing service”.
Based in Jersey City, 13 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “Waterproofing service”.
Based in East Brunswick, 12 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 1,961 Google reviews, the most in Rahway.
Based in Staten Island, 10 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 Dover, 25 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 156 Google reviews, listed on Google as “Waterproofing service”.
Based in Bergenfield, 26 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Waterproofing service”.
Based in Rockaway, 24 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 Clark, 2 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 84 Google reviews, listed on Google as “Waterproofing service”.
Based in Avenel, 2 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 28 Google reviews, listed on Google as “Waterproofing service”.
Based in Caldwell, 16 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based in Rahway
Ranked #16 because of its Google rating and trade focus: 4.9★ from 163 Google reviews, listed on Google as “Waterproofing service”.
Based in Jamaica, 26 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based in Scotch Plains, 3 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based in Carlstadt, 19 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 Carteret, 8 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Waterproofing service”.
Based in Bernardsville, 22 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based in Clifton, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 37 Google reviews, listed on Google as “Waterproofing service”.
Based in Bridgewater, 16 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Waterproofing service”.
Based in Staten Island, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Waterproofing service”.
Based in Scotch Plains, 6 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 61 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 548 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 |
|---|---|---|
| Advance Tech Waterproofing | 5.0★ (2) | 14 mi |
| Alert Roofing Construction | 5.0★ (2) | 9 mi |
| Apolo Contractor Corp | 4.5★ (2) | 12 mi |
| Apple City Construction | 5.0★ (2) | 17 mi |
| C&S Foundations Inc. | 3.0★ (2) | 10 mi |
| Garden State Brickface and Siding | 4.8★ (251) | In Rahway |
| Go Pro Basements | 3.0★ (2) | 2 mi |
| Gotham Waterproofing & Restoration | In Rahway | |
| Guerreiro’s Construction Inc. | In Rahway | |
| INFRARED ROOF INSPECTORS | 5.0★ (2) | 15 mi |
| Interstate Contracting And Restoration | 5.0★ (2) | 9 mi |
| New Bridge Contracting Corp | 5.0★ (2) | 15 mi |
| NN CONSTRUCTION BD CORPORATION WATERPROOFING AND ROOFING | 5.0★ (2) | 16 mi |
| Nu-Look Home Improvement | 3.0★ (2) | 5 mi |
| Park Slope Best Waterproofing | 5.0★ (2) | 16 mi |
| Perfect Restoration inc | 5.0★ (2) | 17 mi |
| Rahat Construction Corp | 3.0★ (2) | 18 mi |
| Roofing Siding Acero | 3.0★ (2) | 10 mi |
| Sullivan Waterproofing and Restoration | 5.0★ (2) | 18 mi |
| Waterproofing Guys | 5.0★ (2) | 15 mi |
National price ranges in USD, not adjusted for Rahway. 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 548 Rahway 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 Rahway 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 |