Radon Mitigation Cost in Vermont (2026)

Radon in Vermont

Vermont's geology tells the story. The Green Mountains are composed of granite, schist, phyllite, and marble — all rock types associated with uranium decay and radon production. Statewide, Vermont has one of the higher rates of homes exceeding the 4.0 pCi/L action level in New England.

Chittenden (Burlington), Washington (Montpelier), Lamoille, Caledonia, and Orange counties all have significant Zone 1 exposure. The Connecticut River valley (Orange and Windsor counties) runs somewhat lower. The Northeast Kingdom is undersampled but likely high due to granite geology.

Cost by Foundation Type

Finished Basement: $1,100–$2,500

Vermont's cold climate makes full basements the norm. Most Vermont mitigation work involves basement installations.

• Unfinished basement: $1,100–$1,700
• Partially finished basement: $1,500–$2,100
• Fully finished, complex routing: $1,900–$2,500

Crawl Space: $2,800–$6,000

Older Vermont farmhouses and Capes frequently have dirt-floor crawl spaces, sometimes with stone foundation walls. Rocky soil and cold climate complicates both access and encapsulation.

• Standard crawl space: $2,800–$4,000
• Stone foundation, difficult access: $3,800–$6,000

Slab-on-Grade: $1,000–$2,000

Less common in Vermont's older housing stock, but found in some 1970s–1990s ranches and newer construction.

Vermont-Specific Cost Factors

Old housing stock: Vermont has some of the oldest housing in the country — many homes predate 1920. Stone foundations, hand-dug basements, and fieldstone perimeters require specialized assessment before standard depressurization can be applied.

Rural contractor shortage: Vermont's small population means fewer certified radon contractors statewide. Burlington and Montpelier have the most options; rural communities may wait weeks and pay travel premiums.

Higher labor costs: Vermont contractor rates are above national averages. Budget 20–30% above Midwest pricing for equivalent work.

Well water radon: Vermont has high well-water usage and granite bedrock — a combination that sometimes produces radon in well water in addition to soil-gas radon. If you're on a well, ask about water testing alongside air testing.

Tight homes: Vermont homes sealed for harsh winters tend to accumulate radon efficiently. Mitigation systems work very effectively in tight Vermont construction.

Vermont Resources

• Vermont Dept of Health Radon Program: healthvermont.gov/radon
• Verify NRPP: radonproficiency.org
• Verify NRSB: nrsb.org

Find certified radon mitigators in Vermont →