61/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 265 Google reviews.
- 5.0★ from 265 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9390 Veterans Memorial Pkwy, O'Fallon, MO 63366
Best Foundation Repair Companies in O'Fallon, MO (2026)
73 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in O'Fallon: Home Shield Foundation Repair, CR Score 61/100; 5.0★ from 265 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Acculevel, posts 24/7 hours; ranked #3 of 73.
- 6
Most-reviewed: Woods Basement Systems, Inc., 2,403 Google reviews at 4.7★, the most of 73 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
73 O'Fallon foundation repair companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 32 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.8★ across 73 rated businesses.
Top 10 foundation repair companies in O'Fallon at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Home Shield Foundation Repair | 61 | 5.0★ (265) | O'Fallon | 24/7 | Overall |
| 2 | Helitech Waterproofing & Foundation Repair | 59 | 4.9★ (2,201) | East Saint Louis, 37 mi away | Sat | — |
| 3 | Acculevel | 59 | 4.8★ (24) | Chesterfield, 11 mi away | 24/7 | Emergencies |
| 4 | Helitech Waterproofing & Foundation Repair | 59 | 4.6★ (168) | Affton, 4 mi away | Sat | — |
| 5 | Crackstoppers Foundation Repair & Waterproofing | 58 | 5.0★ (26) | Saint Charles, 9 mi away | Sat · Sun · Evenings | — |
| 6 | Woods Basement Systems, Inc. | 58 | 4.7★ (2,403) | Collinsville, 40 mi away | Sat · Evenings | Most reviews |
| 7 | Ram Jack St. Charles | 57 | 4.9★ (72) | Saint Peters, 5 mi away | Evenings | — |
| 8 | Perma Jack of St. Louis | 57 | 4.9★ (311) | Manchester, 21 mi away | — | — |
| 9 | Quacker's Waterproofing & Basement Repair | 56 | 4.8★ (59) | Saint Peters, 14 mi away | Sat | — |
| 10 | Crawlspace Medic of St. Louis | 56 | 4.8★ (128) | St. Louis, 24 mi away | Sat · Evenings | — |
The 73 best foundation repair companies in O'Fallon, ranked
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.
Based in East Saint Louis, 37 mi away
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 2,201 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 2,201 Google reviews
- Hours
- Mon–Fri 7:30 AM–5:30 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 8251 Bunkum Rd, Caseyville, IL 62232
#3 Acculevel
Based in Chesterfield, 11 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 100 Chesterfield Business Pkwy Ste 255, Chesterfield, MO 63005
Based in Affton, 4 mi away
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.6★ from 168 Google reviews, listed on Google as “Waterproofing service”.
- 4.6★ from 168 Google reviews
- Hours
- Mon–Fri 7:30 AM–5:30 PM · Sat 8 AM–4 PM · Sun closed
Based in Saint Charles, 9 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 26 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–6 PM · Sun 9 AM–3 PM
- Address
- 62 Spring Trail Ct, St Charles, MO 63303
Based in Collinsville, 40 mi away
58/100CR ScoreRanked #6 because of its Google rating and review volume: 4.7★ from 2,403 Google reviews, the most in O'Fallon.
- 4.7★ from 2,403 Google reviews
- Hours
- Mon–Thu 8 AM–8 PM · Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 524 Vandalia St, Collinsville, IL 62234
Based in Saint Peters, 5 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 72 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun closed
- Address
- 5377 State Rte N Ste 479, Cottleville, MO 63304
Based in Manchester, 21 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 311 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 311 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1127 Country Stone Dr, Manchester, MO 63088
Based in Saint Peters, 14 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 59 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 59 Google reviews
- Hours
- Mon–Sat 9 AM–5 PM · Sun closed
Based in St. Louis, 24 mi away
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 128 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 128 Google reviews
- Hours
- Mon–Sat 8 AM–6:30 PM · Sun closed
- Address
- 8204 Exchange Way, St. Louis, MO 63144
Based in Chesterfield, 13 mi away
56/100CR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 160 Google reviews.
- 5.0★ from 160 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17957 Rosemar Ln, Glencoe, MO 63038
Based in O'Fallon
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 9 Mingo Ln, O'Fallon, MO 63367
Based in East Saint Louis, 27 mi away
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 25 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 25 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat–Sun 9 AM–8 PM
Based in Florissant, 20 mi away
55/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Painting studio”.
- 5.0★ from 130 Google reviews
- Hours
- Mon–Tue closed · Wed–Sun 12 PM–6 PM
- Address
- 20 Patterson Plaza, Florissant, MO 63031
Based in Arnold, 30 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 202 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 202 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun closed
- Address
- 1000 Fox Chase Industrial Dr, Arnold, MO 63010
Based in Chesterfield, 11 mi away
54/100CR ScoreRanked #16 because of its Google rating and review volume: 4.9★ from 324 Google reviews.
- 4.9★ from 324 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 9 AM–12 PM · Sun closed
- Address
- 17600 Chesterfield Airport Rd Suite 203, Chesterfield, MO 63005
Based in Saint Charles, 13 mi away
54/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 304 Google reviews.
- 5.0★ from 304 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 9 AM–12 PM · Sun closed
- Address
- 100 Hawning Rd Unit C, St Charles, MO 63301
#18 Crack Doctor STL
Based in Saint Peters, 14 mi away
54/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
Based in Eureka, 25 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 80 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 80 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 2103 Penta Dr, High Ridge, MO 63049
#20 Acculift
Based in Wentzville, 12 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.5★ from 44 Google reviews, listed on Google as “Waterproofing service”.
- 4.5★ from 44 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 653 Foristell Rd, Wentzville, MO 63385
Based in Murphy, 25 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 93 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 93 Google reviews
- Hours
- Mon–Thu 9 AM–3 PM · Fri–Sun closed
- Address
- 524 Gravois Rd, Fenton, MO 63026
Based in St. Louis, 33 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 32 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 7038 Grassy Valley Dr, St. Louis, MO 63129
Based in St. Louis, 30 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Concrete contractor”.
- 4.9★ from 72 Google reviews
- Hours
- Mon–Fri 6 AM–10 PM · Sat 7 AM–10 PM · Sun 9 AM–10 PM
- Address
- 1409 Washington Ave Suite 417, St. Louis, MO 63103
Based in Murphy, 24 mi away
52/100CR ScoreRanked #24 because of its Google rating and trade focus: 1.3★ from 4 Google reviews, listed on Google as “Waterproofing service”.
- 1.3★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 476 Old Smizer Mill Rd, Fenton, MO 63026
Based in Bridgeton, 14 mi away
52/100CR ScoreRanked #25 because of its Google rating and review volume: 4.9★ from 528 Google reviews.
- 4.9★ from 528 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 13590 NW Industrial Dr, Bridgeton, MO 63044
Foundation repair companies ranked #26 to #50
#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 73 ranked foundation repair companies here; the rest are on their profiles.
Also serving O'Fallon
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 |
|---|---|---|
| CNC Concrete Inc. | 4.4★ (37) | In O'Fallon |
| concrete repair | In O'Fallon | |
| DL Polyjack | 5.0★ (29) | In O'Fallon |
| Eagle Eye Exteriors | 5.0★ (1) | In O'Fallon |
| Elevate Outdoor | 4.6★ (102) | In O'Fallon |
| Four Boys Construction | 5.0★ (5) | In O'Fallon |
| Hawkins Construction & Flatwork | 4.1★ (10) | In O'Fallon |
| Jones Deck Builder | 5.0★ (22) | In O'Fallon |
| King's Excavation and Land Management | 4.9★ (67) | In O'Fallon |
| Missouri Constructors | 3.0★ (2) | In O'Fallon |
| NAZWORTH CONTRACTING | 5.0★ (2) | In O'Fallon |
| O'Fallon Concrete Co. | 5.0★ (5) | In O'Fallon |
| Peine Lawn Care and Landscaping LLC | 4.8★ (38) | In O'Fallon |
| Pierce Drywall & Painting Services | 5.0★ (8) | In O'Fallon |
| Precision Plumbing Solutions | 4.7★ (1,253) | In O'Fallon |
| Pro Basement Finishers | 3.4★ (8) | In O'Fallon |
| Rooted Arbor Care | 5.0★ (287) | In O'Fallon |
| SAK Construction | 4.1★ (42) | In O'Fallon |
| Siding Repair Systems | 4.4★ (172) | In O'Fallon |
| Tri-County Waterproofing Inc | 5.0★ (2) | In O'Fallon |
How much do foundation repair companies cost in O'Fallon?
National price ranges in USD, not adjusted for O'Fallon. 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 |
How we ranked O'Fallon foundation repair companies
We scored 73 O'Fallon 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 O'Fallon 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 |
Foundation repair companies in O'Fallon: frequently asked questions
Who is the best foundation repair company in O'Fallon?
By CR Score, the highest-ranked foundation repair company in O'Fallon, MO is Home Shield Foundation Repair with a CR Score of 61/100. It has 5.0★ from 265 Google reviews. It is open 24/7. Helitech Waterproofing & Foundation Repair (#2) and Acculevel (#3) follow. We ranked 73 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in O'Fallon?
ContractorsRanked ranks 73 foundation repair companies serving O'Fallon, MO. 2 of them are based in O'Fallon; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in O'Fallon are open 24/7?
8 ranked foundation repair companies in O'Fallon post 24/7 hours. The highest-ranked are Home Shield Foundation Repair (#1), Acculevel (#3) and Rattini Roofing & Exteriors, LLC (#11). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in O'Fallon work on weekends?
32 of 73 ranked foundation repair companies post Saturday hours and 13 post Sunday hours. The highest-ranked open Saturdays are Home Shield Foundation Repair (#1), Helitech Waterproofing & Foundation Repair (#2) and Acculevel (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in O'Fallon?
Foundation repair typically costs $2,225 to $8,133, with $5,174 typical (Per project: typical range of customer-reported repairs. US national range). This is a national range, not adjusted for O'Fallon. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do O'Fallon foundation repair companies have?
The median Google rating among 73 rated foundation repair companies in O'Fallon is 4.8★, with a median of 24 reviews. Woods Basement Systems, Inc. has the most, 2,403 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank foundation repair companies?
Each foundation repair company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside O'Fallon count in this ranking?
Yes, if they are within 40 mi of the O'Fallon city center, our service radius for foundation repair companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for O'Fallon
- October 2026: CR Scores recalculated for 73 foundation repair companies serving O'Fallon.
More foundation repair companies and O'Fallon pages
Foundation repair companies near O'Fallon
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