Crawl Space Repair in O'Fallon, Missouri
Reviewed by Michael Peterson· Licensed Home Inspector
28 crawl space companies serve O'Fallon, Missouri, together holding 4,779 customer reviews. Missouri Basement is the highest-rated at 5.0★ (320 reviews). Local crawl space repair typically runs $1,500–$5,550, and full encapsulation $2,950–$8,000. The most common services offered here are crawl space repair, foundation repair, waterproofing.
Find trusted local contractors for crawl space encapsulation in O'Fallon, waterproofing in O'Fallon, mold removal in O'Fallon, and more in O'Fallon.
Local Price Estimates — O'Fallon
* Estimates based on local market rates. Get free quotes for exact pricing. See the full repair cost guide, encapsulation cost guide, or cost calculator.
Crawl Space Contractors in O'Fallon
100 Hawning Rd Unit C, St Charles, MO 63301, USA
320 reviews
62 Spring Trail Ct, St Charles, MO 63303, USA
27 reviews
5377 State Rte N Suite 496, Cottleville, MO 63304, USA
276 reviews
604 S Main St, Auxvasse, MO 65231, USA
25 reviews
1550 U.S. Rte 66 Suite B, Lebanon, MO 65536, USA
13 reviews
420 E Wabash St, O'Fallon, MO 63366, USA
2 reviews
3220 Everwood Run, St Charles, MO 63303, USA
4 reviews
302 S Main St, O'Fallon, MO 63366, USA
18 reviews
762 Luetkenhaus Blvd #628, Wentzville, MO 63385, USA
31 reviews
581 Mid Rivers Mall Dr, St Peters, MO 63376, USA
14 reviews
1625 Larkin Williams Rd, Fenton, MO 63026, USA
1672 reviews
5377 State Rte N Suite 479, Cottleville, MO 63304, USA
78 reviews
1140 Birdie Hills Rd, St Peters, MO 63376, USA
35 reviews
14420 Cazado Dr, Chesterfield, MO 63017, USA
167 reviews
17600 Chesterfield Airport Rd Suite 203, Chesterfield, MO 63005, USA
329 reviews
17384 Manchester Rd, Wildwood, MO 63038, USA
138 reviews
2103 Penta Dr, High Ridge, MO 63049, USA
83 reviews
200 S Elam Ave, Valley Park, MO 63088, USA
178 reviews
7938 Town Square Ave, Dardenne Prairie, MO 63368, USA
169 reviews
200 S Elam Ave UNIT 200, Valley Park, MO 63088, USA
357 reviews
8204 Exchange Way, St. Louis, MO 63144, USA
128 reviews
18167 Edison Ave Suite I & J, Chesterfield, MO 63005, USA
71 reviews
100 Chesterfield Business Pkwy Suite 255, Chesterfield, MO 63005, USA
14 reviews
8651 Old Hwy N Ste 124, Lake St Louis, MO 63367, USA
0 reviews
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. With 28 local companies to compare, getting 2–3 quotes usually saves 15–30%.
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.
Who is the top-rated crawl space company in O'Fallon?
Missouri Basement is the highest-rated crawl space contractor in O'Fallon with a 5.0★ rating from 320 reviews. Home Shield Foundation Repair (5.0★, 276 reviews) is also highly rated. Ratings shown are from public customer reviews.
How many crawl space contractors serve O'Fallon?
28 crawl space companies are listed for O'Fallon. The average local rating is 4.9★ across 4,779 reviews. Contractors in nearby St. Louis and Springfield also serve the area.
What crawl space services are available in O'Fallon?
O'Fallon contractors most commonly offer crawl space repair, foundation repair, waterproofing, alongside repair, insulation, cleaning, and inspection. Compare providers above to see who offers what.
What should O'Fallon homeowners know before hiring a crawl space contractor?
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. Always verify licensing and insurance, and get itemized quotes from at least two O'Fallon-area companies before signing.
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.
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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Helpful Guides
Pro Tip
Prices vary by location, crawl space size, and severity. Always get 2–3 quotes before hiring.