90 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Blandon: Groundworks, CR Score 59/100; 4.8★ from 1,286 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): A J Waterproofing, posts 24/7 hours; ranked #2 of 90.
Most-reviewed: The Exterior Company, 2,185 Google reviews at 4.8★, the most of 90 ranked; ranked #28.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
90 Blandon foundation repair companies are ranked here by CR Score, from ten published factors. 22 are open 24/7, 67 open Saturdays and 45 open Sundays, based on posted hours. The median Google rating is 4.9★ across 90 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Groundworks | 59 | 4.8★ (1,286) | Montgomeryville, 38 mi away | Sat · Sun · Evenings | Overall |
| 2 | A J Waterproofing | 59 | 4.9★ (150) | Collegeville, 30 mi away | 24/7 | Emergencies |
| 3 | A Waterproofing Solution Inc | 59 | 4.9★ (189) | King of Prussia, 35 mi away | 24/7 | — |
| 4 | Groundworks | 58 | 5.0★ (117) | Allentown, 24 mi away | Sat · Sun · Evenings | — |
| 5 | Basement Gurus LLC | 57 | 4.9★ (185) | Lancaster, 36 mi away | Sat · Sun | — |
| 6 | Basement Waterproofing Specialists, Inc. | 56 | 4.4★ (382) | Collegeville, 29 mi away | Sat · Sun · Evenings | — |
| 7 | Groundworks | 56 | 4.9★ (113) | Camp Hill, 36 mi away | Sat · Sun · Evenings | — |
| 8 | Basement Scientists | 56 | 5.0★ (46) | Radnor, 39 mi away | 24/7 | — |
| 9 | DMR Waterproofing | 56 | 5.0★ (116) | Chester Springs, 31 mi away | 24/7 | — |
| 10 | Viking Waterproofing | 56 | 5.0★ (40) | Pottstown, 18 mi away | Sat · Evenings | — |
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 trade focus: 4.8★ from 1,286 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Collegeville, 30 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 150 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in King of Prussia, 35 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 189 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Allentown, 24 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 117 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lancaster, 36 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 185 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Collegeville, 29 mi away
Ranked #6 because of its Google rating and trade focus: 4.4★ from 382 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Camp Hill, 36 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 113 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Radnor, 39 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 31 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 116 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pottstown, 18 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Allentown, 24 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 32 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester Springs, 31 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Allentown, 21 mi away
Ranked #14 because of its Google rating and review volume: 5.0★ from 139 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Audubon, 32 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Palmerton, 29 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Waterproofing service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Coatesville, 30 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norristown, 37 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 38 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bedminster, 33 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 32 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lancaster, 36 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Pottstown, 19 mi away
Ranked #21 because of its Google rating and review volume: 4.7★ from 158 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Allentown, 31 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 182 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Audubon, 33 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 230 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norristown, 36 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 90 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bedminster, 36 mi away
Ranked #25 because of its Google rating and trade focus: 4.5★ from 8 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 90 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 Waterproofing One | 5.0★ (2) | 36 mi |
| Basement Waterproofing One | 5.0★ (1) | 20 mi |
| BJ Fisher Basement Waterproofing | In Blandon | |
| CCC Group | 4.0★ (1) | 18 mi |
| Cozzubbo Home Contracting | 5.0★ (8) | In Blandon |
| Deco Sealers | 5.0★ (2) | 21 mi |
| Fireline Foundations | 3.0★ (2) | 29 mi |
| Foundation Experts Crawl Space Conversions | 5.0★ (1) | 23 mi |
| Foundation Repair and Engineering | 5.0★ (2) | 28 mi |
| Kinsley Construction - Blandon Office | 4.5★ (2) | In Blandon |
| Lancaster Waterproofing Solutions | 5.0★ (2) | 35 mi |
| Laszlo Masonry & Restoration | 5.0★ (2) | 39 mi |
| Otto Restoration Inc. | 5.0★ (1) | 12 mi |
| Rangel Concrete Construction | 5.0★ (5) | In Blandon |
| RDry Basement Waterproofing Reading | 5.0★ (1) | 7 mi |
| S&M Quality Contracting | 4.5★ (2) | 7 mi |
| Sealedry Waterproof Painting Systems | 5.0★ (2) | 33 mi |
| Storm Solutions Group | 3.0★ (2) | 33 mi |
| True Blue Home Improvements & Foundations | 5.0★ (1) | 16 mi |
| Waterproofing One | 5.0★ (1) | 3 mi |
National price ranges in USD, not adjusted for Blandon. 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 90 Blandon 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 Blandon 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 |