14 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Bay City: Koala Insulation of Mid-Michigan, CR Score 54/100; 4.7★ from 281 Google reviews.
Best for emergencies (open 24/7): Klenow & Sons Plumbing, posts 24/7 hours; ranked #3 of 14.
Most-reviewed: Foundation Systems of Michigan, 61 Google reviews at 5.0★, the most of 14 ranked after Koala Insulation of Mid-Michigan; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
14 Bay City foundation repair companies are ranked here by CR Score, from ten published factors. 1 is open 24/7, 7 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.5★ across 14 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Mid-Michigan | 54 | 4.7★ (281) | Saginaw, 9 mi away | — | Overall |
| 2 | Mid-Michigan Basement Waterproofing L.L.C. | 54 | 3.5★ (24) | Saginaw, 13 mi away | Sat · Evenings | — |
| 3 | Klenow & Sons Plumbing | 53 | 4.8★ (31) | Saginaw, 16 mi away | 24/7 | Emergencies |
| 4 | Foundation Systems of Michigan | 53 | 5.0★ (61) | Flint, 40 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Everdry Waterproofing of Saginaw | 51 | 3.8★ (17) | Saginaw, 11 mi away | Sat · Evenings | — |
| 6 | Mobile Waterproofing | 50 | 2.7★ (7) | Midland, 23 mi away | Sat | — |
| 7 | TruDry Waterproofing LLC | 50 | 5.0★ (12) | Whitmore Lake, 32 mi away | — | — |
| 8 | Tri Cities Basement Waterproofing & Foundation Repair | 49 | 3.5★ (8) | Bridgeport, 21 mi away | — | — |
| 9 | Saginaw Foundation Repair Specialists | 49 | 5.0★ (3) | Saginaw, 12 mi away | Sat | — |
| 10 | Ayotte Waterproofing The Basement Doctor | 48 | 3.7★ (9) | Beecher, 35 mi away | — | — |
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: 4.7★ from 281 Google reviews, the most in Bay City.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 13 mi away
Ranked #2 because of its Google rating and trade focus: 3.5★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 16 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flint, 40 mi away
Ranked #4 because of its Google rating and review volume: 5.0★ from 61 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 11 mi away
Ranked #5 because of its Google rating and trade focus: 3.8★ from 17 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Midland, 23 mi away
Ranked #6 because of its Google rating and trade focus: 2.7★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Whitmore Lake, 32 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 21 mi away
Ranked #8 because of its Google rating and trade focus: 3.5★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 12 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Beecher, 35 mi away
Ranked #10 because of its Google rating and trade focus: 3.7★ from 9 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saginaw, 18 mi away
Ranked #11 because of its Google rating and trade focus: 3.0★ from 4 Google reviews, listed on Google as “Masonry contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Midland, 23 mi away
Ranked #12 because of its Google rating and review volume: 4.2★ from 57 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flushing, 37 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Flushing, 38 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Flooring contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
14 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 |
|---|---|---|
| A&A Masonry LLC | 5.0★ (1) | 13 mi |
| Alliance Contracting & Design Inc | 4.8★ (60) | In Bay City |
| Alliance Waterproofing | In Bay City | |
| COIN construction instruction | In Bay City | |
| Dietzel's Masonry | In Bay City | |
| Elliot Environmental | 5.0★ (117) | In Bay City |
| Expert Foundation Repair Midland | 5.0★ (1) | 18 mi |
| JW Contracting | In Bay City | |
| Mobile Waterproofing | 19 mi | |
| Prince Barriers llc | 16 mi | |
| R. C. Waterproofing Inc. | 5.0★ (1) | 10 mi |
| Serenus Johnson Construction | 4.9★ (7) | In Bay City |
| Superior Poured Foundations Co | 5.0★ (1) | 37 mi |
| Top Gun Waterproofing & Repair | 3.0★ (2) | 16 mi |
National price ranges in USD, not adjusted for Bay City. 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 14 Bay City 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 Bay City 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 |