70 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cornelius: Better Basements and Waterproofing, CR Score 58/100; 4.9★ from 190 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): Crawlspace Repair, posts 24/7 hours; ranked #2 of 70.
Most-reviewed: TerraFirma, 870 Google reviews at 4.8★, the most of 70 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
70 Cornelius foundation repair companies are ranked here by CR Score, from ten published factors. 5 are open 24/7, 30 open Saturdays and 14 open Sundays, based on posted hours. The median Google rating is 4.8★ across 70 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Better Basements and Waterproofing | 58 | 4.9★ (190) | Oregon City, 24 mi away | Sat · Evenings | Overall |
| 2 | Crawlspace Repair | 56 | 4.3★ (12) | Portland, 20 mi away | 24/7 | Emergencies |
| 3 | SFW Construction | 56 | 4.9★ (146) | Portland, 17 mi away | 24/7 | — |
| 4 | Pacific Waterproofing | 54 | 4.7★ (48) | Portland, 28 mi away | Sat | — |
| 5 | Pat's Construction LLC | 54 | 4.7★ (14) | Bethany, 14 mi away | Sat | — |
| 6 | USA Roofing & Waterproofing LLC | 54 | 4.9★ (193) | Portland, 15 mi away | — | — |
| 7 | AdvantaClean of Vancouver | 54 | 4.9★ (129) | Vancouver, 27 mi away | 24/7 | — |
| 8 | TerraFirma | 54 | 4.8★ (870) | Portland, 16 mi away | — | Most reviews |
| 9 | Your Crawl Space Guys | 54 | 4.5★ (114) | McMinnville, 23 mi away | — | — |
| 10 | Atomic Construction | 54 | 5.0★ (7) | Bethany, 13 mi away | Sat · Evenings | — |
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 190 Google reviews, listed on Google as “Waterproofing service”.
Based in Portland, 20 mi away
Ranked #2 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Foundation”.
Based in Portland, 17 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 146 Google reviews.
Based in Portland, 28 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 48 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethany, 14 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based in Portland, 15 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 193 Google reviews.
Based in Vancouver, 27 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 129 Google reviews.
Based in Portland, 16 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 870 Google reviews, the most in Cornelius.
Based in McMinnville, 23 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 114 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethany, 13 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based in Portland, 19 mi away
Ranked #11 because of its Google rating and review volume: 5.0★ from 92 Google reviews.
Based in Happy Valley, 24 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 58 Google reviews, listed on Google as “Foundation”.
Based in Wilsonville, 20 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 166 Google reviews.
Based in Tigard, 16 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 304 Google reviews.
Based in Forest Grove, 26 mi away
Ranked #15 because of its Google rating and review volume: 5.0★ from 170 Google reviews.
Based in Happy Valley, 24 mi away
Ranked #16 because of its Google rating and review volume: 5.0★ from 31 Google reviews.
Based in Tigard, 15 mi away
Ranked #17 because of its Google rating and review volume: 4.6★ from 488 Google reviews.
Based in Portland, 18 mi away
Ranked #18 because of its Google rating and review volume: 4.7★ from 115 Google reviews.
Based in Portland, 26 mi away
Ranked #19 because of its Google rating and review volume: 4.9★ from 127 Google reviews.
Based in Portland, 23 mi away
Ranked #20 because of its Google rating and review volume: 4.5★ from 89 Google reviews.
Based in Hillsboro, 9 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based in Forest Grove, 2 mi away
Ranked #22 because of its Google rating and review volume: 4.6★ from 90 Google reviews.
Based in Hillsboro, 7 mi away
Ranked #23 because of its Google rating and review volume: 4.7★ from 33 Google reviews.
Based in Happy Valley, 21 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Concrete contractor”.
Based in Portland, 20 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 67 Google reviews, listed on Google as “Masonry contractor”.
National price ranges in USD, not adjusted for Cornelius. 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 Cornelius 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 Cornelius 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 |