Radon Mitigation Cost Estimator
Get a personalized cost estimate for your home in 30 seconds
1What type of foundation does your home have?
2How large is your home?
3How many stories?
4What state is your home in?
Understanding Radon Mitigation Costs
Radon mitigation is a proven, effective way to protect your family from the second leading cause of lung cancer. The EPA estimates that radon causes approximately 21,000 lung cancer deaths per year in the United States. The good news is that modern mitigation systems can reduce radon levels by up to 99%, and the typical cost is comparable to many common home repairs.
The average radon mitigation system costs between $800 and $2,500, with most homeowners paying around $1,200 to $1,500. This includes professional assessment, system design, installation of vent pipes and a radon fan, sealing of major entry points, and a post-installation verification test. The entire process is typically completed in a single day.
Unlike many home improvement projects, radon mitigation has virtually no aesthetic impact on your home. The vent pipe is usually routed along an exterior wall or through the garage, and the fan is installed in the attic or outside at the roofline. The system runs continuously and quietly, using about the same electricity as a light bulb.
From a financial perspective, radon mitigation is one of the highest-value investments you can make in your home. It protects your family's health, satisfies real estate disclosure requirements, and can prevent costly deal negotiations when selling your home. Many buyers today specifically look for homes with existing mitigation systems already in place.
What Affects Radon Mitigation Cost?
Key factors that determine your final price
Foundation Type
The biggest cost factor. Basements and combination foundations require more extensive pipe routing and sealing work. Slab-on-grade homes are typically the most straightforward. Crawl spaces need a sealed membrane barrier which adds material cost.
Home Size & Layout
Larger homes may need multiple suction points to effectively depressurize the sub-slab area. Multi-story homes require longer pipe runs to reach the roofline. Complex floor plans with additions or irregular shapes can add complexity.
Geographic Location
Labor rates and material costs vary by region. States with higher costs of living (Northeast, West Coast) typically see higher mitigation prices. Areas with high demand for radon services may also have higher rates.
Accessibility & Condition
Difficult access to the foundation (finished basements, landscaping obstacles) can increase labor time. Existing cracks or deteriorating foundations may require additional sealing work. The condition of existing drainage systems can also affect the approach.
Common Questions About Radon Mitigation Costs
The average radon mitigation system costs between $800 and $2,500, with most homeowners paying around $1,200 to $1,500. This includes professional assessment, system design, installation, and post-installation testing. Costs vary based on foundation type, home size, number of stories, and geographic location.
Protect Your Family from Radon
Radon mitigation is one of the most cost-effective investments you can make in your family's health. Don't wait — get started today.
Cost data based on national market research, January 2026