105 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Unionville: Dry Pro Foundation and Crawlspace Specialists, CR Score 87/100; 4.9★ from 2,308 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): H2NO! Waterproofing & Slab Lifting Pro's, posts 24/7 hours; ranked #3 of 105.
Most-reviewed: GSM Services, 3,506 Google reviews at 4.9★, the most of 105 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
105 Unionville foundation repair companies are ranked here by CR Score, from 8 published factors. 25 are open 24/7, 57 open Saturdays and 34 open Sundays, based on posted hours. The median Google rating is 4.9★ across 105 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Dry Pro Foundation and Crawlspace Specialists | 87 | 4.9★ (2,308) | Belmont, 33 mi away | Sat · Sun · Evenings | Overall |
| 2 | Dry Pro Foundation and Crawlspace Specialists | 86 | 4.9★ (134) | Matthews, 11 mi away | Sat · Sun · Evenings | — |
| 3 | H2NO! Waterproofing & Slab Lifting Pro's | 85 | 5.0★ (128) | Charlotte, 18 mi away | 24/7 | Emergencies |
| 4 | Carolina Foundation Solutions | 84 | 4.5★ (11) | Matthews, 13 mi away | 24/7 | — |
| 5 | Carolina Foundation Solutions | 84 | 4.8★ (35) | Charlotte, 29 mi away | 24/7 | — |
| 6 | Crawl Space Brothers | 83 | 5.0★ (309) | Charlotte, 20 mi away | 24/7 | — |
| 7 | GSM Services | 83 | 4.9★ (3,506) | Gastonia, 40 mi away | 24/7 | Most reviews |
| 8 | Alpha Air Heating and Cooling | 83 | 5.0★ (482) | Rock Hill, 29 mi away | 24/7 | — |
| 9 | CNT Foundations | 82 | 3.9★ (7) | Charlotte, 21 mi away | 24/7 | — |
| 10 | EcoGreen Home Services | 81 | 4.8★ (900) | Cornelius, 34 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 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 2,308 Google reviews, listed on Google as “Waterproofing service”.
Based in Matthews, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 134 Google reviews, listed on Google as “Waterproofing service”.
Based in Charlotte, 18 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 128 Google reviews, open 24/7.
Based in Matthews, 13 mi away
Ranked #4 because of its Google rating and availability: 4.5★ from 11 Google reviews, open 24/7.
Based in Charlotte, 29 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 35 Google reviews, open 24/7.
Based in Charlotte, 20 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 309 Google reviews, open 24/7.
Based in Gastonia, 40 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 3,506 Google reviews, the most Google reviews on this list (3,506).
Based in Rock Hill, 29 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 482 Google reviews, open 24/7.
Based in Charlotte, 21 mi away
Ranked #9 because of its Google rating and availability: 3.9★ from 7 Google reviews, open 24/7.
Based in Cornelius, 34 mi away
Ranked #10 because of its Google rating and availability: 4.8★ from 900 Google reviews, open 24/7.
Based in Fort Mill, 23 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 118 Google reviews, open 24/7.
Based in Matthews, 12 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 52 Google reviews, open 24/7.
Based in Harrisburg, 22 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based in Belmont, 20 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “Waterproofing service”.
Based in Charlotte, 19 mi away
Ranked #15 because of its Google rating and trade focus: 4.3★ from 46 Google reviews, listed on Google as “Waterproofing service”.
Based in Belmont, 25 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 135 Google reviews, listed on Google as “Waterproofing service”.
Based in Charlotte, 22 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 654 Google reviews, listed on Google as “Waterproofing service”.
Based in Charlotte, 23 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 69 Google reviews, open 24/7.
Based in Charlotte, 22 mi away
Ranked #19 because of its Google rating and availability: 4.9★ from 86 Google reviews, open 24/7.
Based in Charlotte, 20 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 70 Google reviews, open 24/7.
Based in Concord, 27 mi away
Ranked #21 because of its Google rating and availability: 4.9★ from 82 Google reviews, open 24/7.
Based in Matthews, 13 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Waterproofing service”.
Based in Belmont, 20 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Waterproofing service”.
Based in Belmont, 28 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based in Mint Hill, 8 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Waterproofing service”.
National price ranges in USD, not adjusted for Unionville. 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 105 Unionville 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 Unionville 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 |