Crawl Space Repair in St. Louis, Missouri

Find trusted local contractors for crawl space encapsulation, waterproofing, mold removal, and more in St. Louis. 13 local companies found.

Local Price Estimates — St. Louis

Encapsulation$3,450$8,900
Repair$1,700$6,650
Waterproofing$1,650$5,600
Mold Removal$550$4,450
Inspection$150$450

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

Crawl Space Contractors in St. Louis

Fred's Foundation Repair and Waterproofing

7038 Grassy Valley Dr, St. Louis, MO 63129

5.0

32 reviews

WaterproofingFoundation Repair

Advanced Crawlspace Solutions

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

5.0

12 reviews

Crawl Space Repair

Jet Foundation Repair

3636 S Geyer Rd, St. Louis, MO 63127

5.0

91 reviews

WaterproofingFoundation Repair

Foam Engineers - Insulation Experts

200 S Elam Ave, Valley Park, MO 63088

4.9

179 reviews

Insulation

St Louis Insulation

1140 Birdie Hills Rd, St Peters, MO 63376

4.9

35 reviews

Insulation

Perma Jack of St. Louis

1127 Country Stone Dr, Manchester, MO 63088

4.9

323 reviews

WaterproofingFoundation Repair

Foundation Recovery Systems

1625 Larkin Williams Rd, Fenton, MO 63026

4.9

1662 reviews

WaterproofingFoundation Repair

Crack Wizard

6107 Baumgartner Crossing, St. Louis, MO 63129

4.8

57 reviews

Foundation Repair

Crawlspace Medic of St. Louis

8204 Exchange Way, St. Louis, MO 63144

4.8

128 reviews

Waterproofing

Atlas Foundation Solutions LLC

2451 N Lark Dr, Fenton, MO 63026

4.8

21 reviews

WaterproofingFoundation Repair

Waterproof Solutions

524 Gravois Rd, Fenton, MO 63026

4.8

95 reviews

Waterproofing

Woods Basement Systems, Inc.

524 Vandalia St, Collinsville, IL 62234

4.7

2463 reviews

WaterproofingFoundation Repair

St. Louis Foundation Repair & Waterproofing

1906 Claudine Dr, St. Louis, MO 63138

0.0

0 reviews

WaterproofingFoundation Repair

FAQs — Crawl Space Services in St. Louis

How much does crawl space repair cost in St. Louis?

Crawl space repair in St. Louis, Missouri typically costs between $1,700 and $6,650, depending on the extent of damage and services required.

How much does crawl space encapsulation cost in St. Louis?

Crawl space encapsulation in St. Louis typically costs between $3,450 and $8,900. The price depends on the size of your crawl space and the materials used.

What crawl space services are available in St. Louis?

Local contractors in St. Louis 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.