| Boise, ID | $4–$8 $/sq ft installed | $5,000–$15,000 1,200 sq ft crawl space, 20-mil liner, vent sealing | - Liner thickness and wall coverage (20-mil vs thinner options)
- Dehumidifier sizing and mechanical installation
- Mold remediation or drainage matting needed before liner install
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| Charlotte, NC | $5–$12 $/sq ft installed | $5,000–$8,500 1,200 sq ft crawl space, full encapsulation + dehumidifier | - Dehumidifier sizing and inclusion (adds $800–$1,500)
- Liner thickness (6-mil vs 12–20-mil reinforced polyethylene)
- Mold remediation or damaged rim joist repair before sealing
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| Colorado Springs, CO | $4–$12 $/sq ft installed | $3,000–$8,500 1,000 sq ft crawl space, 12-mil liner + vent sealing | - Liner thickness (6-mil vs 20-mil reinforced)
- Dehumidifier and drainage system additions
- Crawl space clearance and access difficulty
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| Fort Myers, FL | $4–$8 $/sq ft installed | $5,500–$10,000 1,200 sq ft crawl space, 20-mil barrier + dehumidifier | - Mold remediation or joist repair discovered during inspection
- Crawl space height under 24 inches adds confined-space labor cost
- Drainage matting requirement due to Southwest Florida soil saturation
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| Grand Rapids, MI | $5–$12 $/sq ft installed | $4,000–$6,500 Average GR crawl space, 20-mil barrier + dehumidifier | - Mold remediation or joist repair before encapsulation
- Barrier thickness (12-mil vs 20-mil reinforced poly)
- Crawl space height and access difficulty
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| Indianapolis, IN | $3–$12 $/sq ft installed | $4,500–$7,000 1,200 sq ft crawl space, 20-mil liner + dehumidifier | - Liner thickness (6-mil vs 20-mil reinforced)
- Pre-existing mold, rot, or insulation removal needed
- Drainage system or sump pump addition
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| Nashville, TN | $4–$12 $/sq ft installed | $5,000–$9,000 1,200 sq ft crawl space, 20-mil liner + dehumidifier | - Existing moisture damage, mold, or rotted framing
- Liner thickness (6-mil vs 20-mil reinforced)
- Dehumidifier install + dedicated electrical circuit
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| Raleigh-Durham, NC | $4–$8 $/sq ft installed | $5,000–$9,000 1,000 sq ft crawl space, 20-mil barrier + dehumidifier | - Dehumidifier requirement due to NC humid-subtropical climate
- Crawl space access height and existing moisture or mold damage
- Wall/rim joist insulation and county permit fees
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| Salt Lake City, UT | $3–$12 $/sq ft installed | $4,500–$8,500 1,200 sq ft crawl space, 20-mil liner + dehumidifier | - Standing water or drainage prep near Jordan River lowlands
- Liner thickness and seam-sealing method (6-mil vs 20-mil)
- Old insulation removal and rim joist spray foam addition
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| Tampa Bay, FL | $3–$8 $/sq ft installed | $6,500–$12,000 1,200 sq ft crawl space, 20-mil liner + dehumidifier | - Liner thickness (12-mil vs 20-mil reinforced)
- Sealed/conditioned conversion requiring FBC permit
- Pre-existing mold, rot, or standing water remediation
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