Illustration of a clean crawl space sealed with a white vapor barrier and a dehumidifier, the kind of job priced in Charleston, SC

Crawl Space Encapsulation Cost

Crawl Space Encapsulation Cost in Charleston, SC

See what other cost guides report for sealing a crawl space, and what moves the price.

Quick answerOther cost guides report crawl space encapsulation at about $3,000 to $15,000 for a whole job, or $3 to $10 per square foot for fuller work. Drains, pumps and dehumidifiers add to it. These are other websites' numbers, not quotes from us. Charleston's wet ground can mean water control comes first.

What It Typically Costs

These are ranges that other cost guides report. They are not quotes from us. A basic ground cover costs less than a fully sealed space with a dehumidifier.

JobTypical range reportedSource and date
Whole crawl space encapsulationAbout $3,000 to $15,000Angi (July 2026), HomeGuide (January 2026)
Per square foot, fuller jobs$3 to $10Angi (July 2026), HomeGuide (January 2026)

Our Sources for These Ranges

We checked these cost guides on October 6, 2026:

Angi says to budget for extras such as dehumidifiers, sump pumps and vent sealing.

These figures come from other websites. They are not quotes or promises from Foundation Pros of Charleston. Visit each site for current numbers.

Questions and Answers

What is included in encapsulation?

A liner on the floor and walls, taped seams and sealed vents are common. Some jobs add a dehumidifier or a drain. Ask the contractor for the list in writing.

Why is the range so wide?

Size, condition and extras change the job. A clean small space costs less than a large wet one. Water control adds to the total.

Does wet ground raise the cost?

It can. Angi lists sump pumps and dehumidifiers among the extras. Our soil survey samples show a high water table at many points near Charleston.

Do you list your own prices?

No. We show ranges from other sites. The contractor who visits gives you a written scope.

Contact Us Today for a Free Estimate

If you want a real price for your crawl space, tell us what you see. A licensed and insured contractor can visit and give you a free estimate.

Get a Free Estimate (843) 806-0601