83 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Wilmington: Perma-Seal Basement Systems, CR Score 60/100; 4.9★ from 12,405 Google reviews; open Saturdays until 12 PM.
Best for emergencies (open 24/7): Basement Buddies Waterproofing, posts 24/7 hours; ranked #6 of 83.
Most-reviewed: Koala Insulation of Chicago - Western Suburbs, 489 Google reviews at 5.0★, the most of 83 ranked after Perma-Seal Basement Systems; ranked #48.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 Wilmington foundation repair companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 61 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 5.0★ across 83 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Perma-Seal Basement Systems | 60 | 4.9★ (12,405) | Burr Ridge, 32 mi away | Sat | Overall |
| 2 | Area Wide Waterproofing, Inc. | 56 | 5.0★ (131) | Frankfort, 20 mi away | Sat | — |
| 3 | Accu-Dry Waterproofing & Concrete Pumping, Inc. | 56 | 4.9★ (196) | Westmont, 34 mi away | Sat · Sun · Evenings | — |
| 4 | Seepage Seal | 56 | 5.0★ (57) | Lemont, 26 mi away | Sat · Sun · Evenings | — |
| 5 | Basement and Crawl Space Solutions | 56 | 5.0★ (63) | Braidwood, 5 mi away | — | — |
| 6 | Basement Buddies Waterproofing | 54 | 4.7★ (35) | Wheaton, 38 mi away | 24/7 | Emergencies |
| 7 | Total Waterproofing inc | 54 | 5.0★ (38) | Frankfort, 34 mi away | Sat · Sun · Evenings | — |
| 8 | ULB-DRY Waterproofing | 54 | 5.0★ (9) | Elmhurst, 33 mi away | 24/7 | — |
| 9 | American Basements and Crawlspaces Corp. | 53 | 4.6★ (111) | Orland Park, 28 mi away | Sat · Evenings | — |
| 10 | OC Property Solutions Heating, Cooling, Plumbing, & Electric | 53 | 5.0★ (228) | Plainfield, 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 review volume: 4.9★ from 12,405 Google reviews, the most in Wilmington.
Based in Frankfort, 20 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 131 Google reviews, listed on Google as “Waterproofing service”.
Based in Westmont, 34 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 196 Google reviews, listed on Google as “Waterproofing service”.
Based in Lemont, 26 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Waterproofing service”.
Based in Braidwood, 5 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Waterproofing service”.
Based in Wheaton, 38 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 35 Google reviews, listed on Google as “Waterproofing service”.
Based in Frankfort, 34 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Waterproofing service”.
Based in Elmhurst, 33 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.
Based in Orland Park, 28 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 111 Google reviews, listed on Google as “Waterproofing service”.
Based in Plainfield, 27 mi away
Ranked #10 because of its Google rating and review volume: 5.0★ from 228 Google reviews.
Based in New Lenox, 16 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based in Chicago, 36 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Foundation”.
Based in Naperville, 32 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based in Manteno, 17 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 212 Google reviews.
Based in Evergreen Park, 37 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 119 Google reviews, listed on Google as “Waterproofing service”.
Based in Plainfield, 19 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based in Crest Hill, 35 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Waterproofing service”.
Based in Chicago, 33 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 118 Google reviews, listed on Google as “Waterproofing service”.
Based in Naperville, 30 mi away
Ranked #19 because of its Google rating and trade focus: 4.1★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based in Coal City, 27 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based in Minooka, 12 mi away
Ranked #21 because of its Google rating and review volume: 5.0★ from 170 Google reviews.
Based in Batavia, 38 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “Waterproofing service”.
Based in North Aurora, 33 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
Based in Winfield, 38 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Waterproofing service”.
Based in Oswego, 29 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 9 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 83 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 |
|---|---|---|
| Basement Seepage Experts | 5.0★ (1) | 21 mi |
| Basement Waterstoppers | 5.0★ (2) | 35 mi |
| Bestbuilt Waterproofing | 3.0★ (1) | 35 mi |
| Concord Concrete & Construction | 1.0★ (1) | 19 mi |
| Concrete & Construction Solutions - Decorative|Driveway|Foundation, Concrete Contractor Services | 5.0★ (2) | 34 mi |
| Concrete Correctors Inc | 3.0★ (2) | 30 mi |
| CRS Waterproofing Basement Specialist | 5.0★ (2) | 30 mi |
| Ellis' construction | In Wilmington | |
| Fresh Page Home Improvement | 5.0★ (2) | 35 mi |
| Ground Up Crack Solutions. | 5.0★ (1) | 38 mi |
| Hytone Concrete Construction | 4.0★ (2) | 20 mi |
| Kost Concrete | 5.0★ (2) | 29 mi |
| Lifted Foam Concrete Raising | 4.9★ (44) | In Wilmington |
| Matson Waterproofing Solutions | 5.0★ (2) | 39 mi |
| Proactive Structured Solutions | 5.0★ (2) | 38 mi |
| RAMCORP, INC. | 5.0★ (4) | In Wilmington |
| RM Waterproofing & Concrete Restoration, Inc. | 5.0★ (1) | 29 mi |
| Sager Sealant Corporation | 5.0★ (2) | 38 mi |
| Slager Waterproofing | 5.0★ (1) | 20 mi |
| Welsch Ready Mix | 5.0★ (1) | 37 mi |
National price ranges in USD, not adjusted for Wilmington. 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 83 Wilmington 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 Wilmington 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 |