How much does crawl space encapsulation cost?
Encapsulation seals a damp crawl space with a heavy vapor barrier (and often a dehumidifier), improving air quality and efficiency. Cost tracks square footage and what add-ons are included.
| Typical range | $2,000 – $15,000 |
| Most common | $6,000 |
| Priced | average crawl space |
| DIY-friendly? | No — best left to a licensed pro |
What changes the price of crawl space encapsulation
- Square footage
- Vapor barrier thickness
- Adding a dehumidifier or drainage
- Insulation and repairs first
Estimate your cost
Adjust the quality and scope, or compare with other projects.
Full typical range for this project. Adjust the quality/scope for a tighter estimate. The only way to know your real price is to get quotes from local contractors.
- ›Square footage
- ›Vapor barrier thickness
- ›Adding a dehumidifier or drainage
- ›Insulation and repairs first
National ballpark ranges for the US. Not a quote — actual prices vary by region, home and contractor.
Crawl space encapsulation cost — frequently asked questions
How much does crawl space encapsulation cost?
Crawl space encapsulation runs about $2,000–$15,000, around $6,000 typical, depending on size and whether a dehumidifier and drainage are added.
Related project costs
This is general US cost information, not a quote. Actual prices depend on your region, home, materials and contractor — always get quotes from licensed local pros before you commit.