70 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Delaware: Ohio Basement Authority, CR Score 61/100; 4.8★ from 2,223 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Chapman Drainage & Basement Repair, posts 24/7 hours; ranked #2 of 70.
Most-reviewed: EVERDRY Waterproofing Cincinnati, 1,501 Google reviews at 4.6★, the most of 70 ranked after Ohio Basement Authority; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
70 Delaware foundation repair companies are ranked here by CR Score, from ten published factors. 12 are open 24/7, 44 open Saturdays and 20 open Sundays, based on posted hours. The median Google rating is 4.9★ across 70 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ohio Basement Authority | 61 | 4.8★ (2,223) | Columbus, 31 mi away | Sat · Sun · Evenings | Overall |
| 2 | Chapman Drainage & Basement Repair | 61 | 4.8★ (170) | Dublin, 16 mi away | 24/7 | Emergencies |
| 3 | Buckeye Basement Solutions | 60 | 5.0★ (280) | Delaware | — | — |
| 4 | The Basement Doctor | 60 | 4.9★ (1,370) | Reynoldsburg, 29 mi away | Sat · Evenings | — |
| 5 | Everdry Waterproofing of Columbus | 59 | 4.5★ (1,395) | Hilliard, 18 mi away | Sat · Evenings | — |
| 6 | Columbus Ohio Basements - Water Proofing Service in Columbus Ohio | 59 | 4.8★ (43) | Columbus, 16 mi away | 24/7 | — |
| 7 | Ohio Basement Authority | 59 | 4.8★ (107) | Dublin, 15 mi away | Sat · Sun · Evenings | — |
| 8 | Hydra Basement Waterproofing & Structural Repair | 58 | 5.0★ (79) | Columbus, 9 mi away | Sat · Evenings | — |
| 9 | Rogers Basement Waterproofing | 58 | 4.9★ (54) | Columbus, 26 mi away | 24/7 | — |
| 10 | EVERDRY Waterproofing Cincinnati | 58 | 4.6★ (1,501) | Cincinnati, 32 mi away | Sat · Evenings | Most reviews |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 2,223 Google reviews, the most in Delaware.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dublin, 16 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 170 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Delaware
Ranked #3 because of its Google rating and trade focus: 5.0★ from 280 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Reynoldsburg, 29 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,370 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilliard, 18 mi away
Ranked #5 because of its Google rating and trade focus: 4.5★ from 1,395 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 16 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 43 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dublin, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 107 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 9 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 26 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cincinnati, 32 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 1,501 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 9 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Delaware
Ranked #12 because of its Google rating and review volume: 5.0★ from 116 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 22 mi away
Ranked #13 because of its Google rating and trade focus: 4.4★ from 81 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Delaware
Ranked #14 because of its Google rating and review volume: 5.0★ from 75 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 24 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 279 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 25 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 29 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 110 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pataskala, 30 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 120 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dublin, 15 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Foundation”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.3★ from 143 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Beavercreek, 36 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lewis Center, 22 mi away
Ranked #23 because of its Google rating and trade focus: 4.5★ from 33 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbus, 22 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Waterproofing service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Columbus, 27 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 63 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 70 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 |
|---|---|---|
| 1st Choice Glass Block, LLC | 4.1★ (37) | In Delaware |
| A1 custom builders LLC | 5.0★ (2) | 22 mi |
| AC waterproofing | 4.5★ (2) | 22 mi |
| Ao Services concrete | 5.0★ (3) | In Delaware |
| Atkins Custom Framing Ltd. | 5.0★ (1) | In Delaware |
| Basement Remedy | 5.0★ (2) | 34 mi |
| BKM Construction LLC | 5.0★ (4) | In Delaware |
| Central Ohio Basement Solutions | 5.0★ (1) | 14 mi |
| Concrete One Construction | 3.0★ (2) | In Delaware |
| Cornerstone Foundation Concrete & Construction LLC | 5.0★ (2) | 9 mi |
| Edward Home Repair, LLC | 5.0★ (2) | 22 mi |
| Hoffmans Fertilization | 4.8★ (783) | In Delaware |
| Kaizen Home Improvements | 5.0★ (51) | In Delaware |
| Kent Underlayments | 5.0★ (1) | In Delaware |
| Maxima Concrete | 4.9★ (365) | In Delaware |
| MJC Septic Services | 4.9★ (35) | In Delaware |
| Mold Magicians | 5.0★ (2) | 30 mi |
| Professional Pavement Services | 4.8★ (37) | In Delaware |
| Radon Reaperz® | 5.0★ (292) | In Delaware |
| Structure Tech | In Delaware |
National price ranges in USD, not adjusted for Delaware. 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 70 Delaware 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 Delaware 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 |