Crawl Space Encapsulation cost breakdown
At a mid-range, national-average baseline, a typical crawl space encapsulation project is estimated at $3,000 to $8,000. The table below breaks the cost down so you can see where your project is likely to land.
| Scope | Cost per sq ft | Typical total (1,000 sq ft) |
|---|---|---|
| Vapor barrier only | $2 to $5 /sq ft | About $2,000 to $5,000 |
| Full encapsulation | $3 to $8 /sq ft | About $3,000 to $8,000 |
| With dehumidifier | $5 to $10 /sq ft | About $5,000 to $10,000 |
| With insulation + drainage | $6 to $12 /sq ft | About $6,000 to $12,000 |
Crawl Space Encapsulation cost by project size
Most of your crawl space encapsulation cost scales with size. Here is the estimated national-average range at a few common project sizes.
| Crawl space area (square feet) | Estimated total cost | Scale |
|---|---|---|
| 500 square feet | $1,500 to $4,000 | Smaller project |
| 1,000 square feet | $3,000 to $8,000 | Typical project |
| 1,750 square feet | $5,250 to $14,000 | Larger project |
What drives crawl space encapsulation cost
- Crawl space area in square feet.
- Scope: vapor barrier versus full encapsulation.
- Dehumidifier, insulation, and drainage.
- Existing moisture, mold, or standing water.
- Access and regional labor rates.
Key cost factors
Barrier vs full encapsulation
A vapor barrier reduces ground moisture cheaply. Full encapsulation seals walls and vents and usually adds a dehumidifier, giving the best moisture and air-quality control.
Fix water first
If there is standing water or drainage issues, those must be addressed first, often with a sump pump or French drain, which adds to the project.