Crawl Space Repair in O'Fallon, Missouri

Find trusted local contractors for crawl space encapsulation, waterproofing, mold removal, and more in O'Fallon. 28 local companies found.

Local Price Estimates — O'Fallon

Encapsulation$2,950$8,000
Repair$1,500$5,550
Waterproofing$1,400$4,600
Mold Removal$500$3,900
Inspection$150$400

* Estimates based on local market rates. Get free quotes for exact pricing.

Crawl Space Contractors in O'Fallon

Missouri Basement

100 Hawning Rd Unit C, St Charles, MO 63301, USA

5.0

320 reviews

Drainage

Crackstoppers Foundation Repair & Waterproofing

62 Spring Trail Ct, St Charles, MO 63303, USA

5.0

27 reviews

WaterproofingFoundation Repair

Home Shield Foundation Repair

5377 State Rte N Suite 496, Cottleville, MO 63304, USA

5.0

276 reviews

Foundation Repair

Missouri Foundation and Foam, LLC

604 S Main St, Auxvasse, MO 65231, USA

5.0

25 reviews

Foundation Repair

Advanced Crawlspace Solutions

1550 U.S. Rte 66 Suite B, Lebanon, MO 65536, USA

5.0

13 reviews

Crawl Space Repair

Tri-County Waterproofing Inc

420 E Wabash St, O'Fallon, MO 63366, USA

5.0

2 reviews

Waterproofing

Crack Attack Foundation Repair

3220 Everwood Run, St Charles, MO 63303, USA

5.0

4 reviews

Foundation Repair

O'Fallon Mold Remediation Solutions

302 S Main St, O'Fallon, MO 63366, USA

5.0

18 reviews

Mold Removal

PuroClean of Wentzville

762 Luetkenhaus Blvd #628, Wentzville, MO 63385, USA

5.0

31 reviews

Crawl Space Repair

St Peters Mold Removal Solutions

581 Mid Rivers Mall Dr, St Peters, MO 63376, USA

5.0

14 reviews

Mold Removal

Foundation Recovery Systems

1625 Larkin Williams Rd, Fenton, MO 63026, USA

4.9

1672 reviews

Foundation Repair

Ram Jack St. Charles

5377 State Rte N Suite 479, Cottleville, MO 63304, USA

4.9

78 reviews

Crawl Space Repair

Rapid Dry

1989 Lohmar Ln, Cottleville, MO 63376, USA

4.9

311 reviews

Crawl Space Repair

St Louis Insulation

1140 Birdie Hills Rd, St Peters, MO 63376, USA

4.9

35 reviews

Insulation

Better Home Insulation

14420 Cazado Dr, Chesterfield, MO 63017, USA

4.9

167 reviews

Insulation

Stratum Structural Systems

17600 Chesterfield Airport Rd Suite 203, Chesterfield, MO 63005, USA

4.9

329 reviews

Foundation Repair

Sansara 24/7 Restoration & Remodeling

17384 Manchester Rd, Wildwood, MO 63038, USA

4.9

138 reviews

Crawl Space Repair

HIGH & DRY foundation repair

2103 Penta Dr, High Ridge, MO 63049, USA

4.9

83 reviews

Foundation Repair

Foam Engineers - Insulation Experts

200 S Elam Ave, Valley Park, MO 63088, USA

4.9

178 reviews

Insulation

Crown Restoration LLC.

7938 Town Square Ave, Dardenne Prairie, MO 63368, USA

4.9

169 reviews

Crawl Space Repair

Mold Solutions

12154 Lackland Rd, St. Louis, MO 63146, USA

4.9

179 reviews

Mold Removal

Quality Waterproofing - Foundation Repair

200 S Elam Ave UNIT 200, Valley Park, MO 63088, USA

4.9

357 reviews

WaterproofingFoundation Repair

Crawlspace Medic of St. Louis

8204 Exchange Way, St. Louis, MO 63144, USA

4.8

128 reviews

Crawl Space Repair

Waterproof Solutions

524 Gravois Rd, Fenton, MO 63026, USA

4.8

96 reviews

Waterproofing

ABC Environmental Contracting Services

18167 Edison Ave Suite I & J, Chesterfield, MO 63005, USA

4.7

71 reviews

Crawl Space Repair

Acculevel

100 Chesterfield Business Pkwy Suite 255, Chesterfield, MO 63005, USA

4.7

14 reviews

Crawl Space Repair

Acculift

653 Foristell Rd, Wentzville, MO 63385, USA

4.5

44 reviews

Crawl Space Repair

Fast Water Damage Restoration

8651 Old Hwy N Ste 124, Lake St Louis, MO 63367, USA

0.0

0 reviews

Crawl Space Repair

FAQs — Crawl Space Services in O'Fallon

How much does crawl space repair cost in O'Fallon?

Crawl space repair in O'Fallon, Missouri typically costs between $1,500 and $5,550, depending on the extent of damage and services required.

How much does crawl space encapsulation cost in O'Fallon?

Crawl space encapsulation in O'Fallon typically costs between $2,950 and $8,000. The price depends on the size of your crawl space and the materials used.

What crawl space services are available in O'Fallon?

Local contractors in O'Fallon offer encapsulation, repair, waterproofing, mold removal, insulation, cleaning, and inspection services. Use our directory to find and compare local professionals.

Crawl Space Concerns in Missouri

The Midwest combines multiple crawl space risks: radon gas seeping through soil, clay soils that move seasonally, and extreme weather events. A properly encapsulated crawl space with radon mitigation addresses the most serious health and structural risks in this region.

!Radon levels in Midwest crawl spaces are among the highest nationally — testing is essential
!Heavy clay soils expand when wet and contract when dry, stressing foundations
!Flash flooding and storm water overwhelm drainage systems regularly
!Temperature swings from -10°F to 100°F stress crawl space materials year-round
!Tornado and severe storm damage to foundations is more common in this region

Local Tip — Missouri

Radon is the #2 cause of lung cancer in the US, and Midwest homes are in a high-radon zone. If you are encapsulating your crawl space, add a radon mitigation system at the same time — bundling saves $500–$1,000 vs. separate installations.

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Pro Tip

Prices vary by location, crawl space size, and severity. Always get 2–3 quotes before hiring.