Crawl Space Repair in O'Fallon, Illinois
Reviewed by Michael Peterson· Licensed Home Inspector
18 crawl space companies serve O'Fallon, Illinois, together holding 7,991 customer reviews. Home Shield Foundation Repair is the highest-rated at 5.0★ (276 reviews). Local crawl space repair typically runs $1,450–$5,800, and full encapsulation $2,900–$7,900. 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
2300 S Illinois St, Belleville, IL 62220, USA
16 reviews
2900 Maryville Rd, Maryville, IL 62062, USA
81 reviews
62 Spring Trail Ct, St Charles, MO 63303, USA
27 reviews
614 N Douglas Ave, Belleville, IL 62220, USA
2 reviews
101 W Vandalia St Suite 116, Edwardsville, IL 62025, USA
8 reviews
5377 State Rte N Suite 496, Cottleville, MO 63304, USA
276 reviews
8251 Bunkum Rd, Caseyville, IL 62232, USA
2313 reviews
1625 Larkin Williams Rd, Fenton, MO 63026, USA
1672 reviews
5711 N Illinois St, Fairview Heights, IL 62208, USA
169 reviews
535 Edwardsville Rd suite 230, Troy, IL 62294, USA
24 reviews
1600 Centreville Ave, Belleville, IL 62220, USA
428 reviews
8204 Exchange Way, St. Louis, MO 63144, USA
128 reviews
1409 Washington Ave UNIT 417, St. Louis, MO 63103, USA
26 reviews
4394 Mascoutah Ave, Belleville, IL 62221, USA
51 reviews
524 Vandalia St, Collinsville, IL 62234, USA
2502 reviews
12 Wolf Creek Dr #100, Belleville, IL 62226, 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, Illinois typically costs between $1,450 and $5,800, depending on the extent of damage and services required. With 18 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 $2,900 and $7,900. 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?
Home Shield Foundation Repair is the highest-rated crawl space contractor in O'Fallon with a 5.0★ rating from 276 reviews. RCC Restoration (5.0★, 81 reviews) is also highly rated. Ratings shown are from public customer reviews.
How many crawl space contractors serve O'Fallon?
18 crawl space companies are listed for O'Fallon. The average local rating is 4.9★ across 7,991 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 Illinois
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 — Illinois
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.
Recommended services for O'Fallon:
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Helpful Guides
Pro Tip
Prices vary by location, crawl space size, and severity. Always get 2–3 quotes before hiring.