2026 Cost guide
Crawl Space Cost Guide — Middle Tennessee (2026 Prices)
Below are the typical 2026 price ranges for crawl space encapsulation, waterproofing, drainage, dehumidifiers, and moisture control across Lebanon, Mt. Juliet, Hendersonville, Gallatin, Murfreesboro, Manchester, Tullahoma, and Middle Tennessee — plus a quick estimator to ballpark your project before you call. Actual pricing depends on your crawl space size, access, water source, and the specific problem.
Typical crawl space costs in Middle Tennessee (2026)
| Service | Typical range | Notes |
|---|---|---|
| Full crawl space encapsulation | $5,000–$15,000 | Complete moisture-control system: vapor barrier, sealed vents, wall liner, and air management. |
| Vapor barrier install (only) | $1,500–$4,000 | Ground cover only; price varies with thickness & square footage. |
| Crawl space dehumidifier (installed) | $1,200–$2,500 | Depends on unit capacity, drainage, and electrical readiness. |
| Sump pump install | $1,000–$3,000 | Basin, pump, and discharge line for standing water. |
| Crawl space drainage / interior French drain | $1,500–$5,000 | Perimeter drain tile to route water to a sump. |
| Foundation waterproofing | $2,000–$8,000+ | Varies widely with wall condition, water source & access. |
| Mold / moisture remediation | $500–$4,000 | Depends on affected area and severity. |
| Crawl space insulation | $1,500–$4,000 | Wall or floor insulation as part of moisture control. |
| Structural support / jack repair | $1,000–$3,000 per area | Support jacks for sagging or soft floors; per repair area. |
These are typical ranges for planning only, not a quote. Final pricing depends on your specific crawl space, size, access, water source, materials, permits, and the exact problem. For an accurate number, a local pro will confirm details on site. Ranges reviewed for 2026.
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What changes the price
- Crawl space square footage, height, and ease of access for crews and equipment.
- Whether water is actively entering, or the problem is long-term humidity.
- Debris removal, old insulation, and cleanup needed before work begins.
- Drainage needs — drain tile, sump pump, and discharge routing.
- Vapor barrier thickness, wall treatment, and insulation changes.
- Any wood, mold, or structural repair required before sealing the space.
- Urgency and whether it is tied to a home sale or inspection deadline.
Frequently asked questions
How much does crawl space encapsulation cost in Middle Tennessee?
Full encapsulation typically runs $5,000–$15,000, depending on square footage, access, water intrusion, drainage, insulation, and any repairs needed before sealing.
Is crawl space encapsulation worth it?
For most homes, yes. It reduces moisture, mold, and wood rot, and can improve indoor air quality and energy efficiency — especially when a crawl space has ongoing humidity, musty odors, or standing water.
What are signs I need crawl space moisture control?
Watch for musty odors, high humidity, sagging or soft floors, visible mold, and standing water under the home. Wet insulation and condensation on ductwork are also warning signs.
How much does a crawl space dehumidifier cost?
A crawl space dehumidifier typically costs $1,200–$2,500 installed, depending on unit capacity, drainage setup, and electrical readiness.