Guide
Radon Mitigation Cost Guide
Answer
A radon mitigation system typically costs $800–$2,500 nationally, averaging around $1,000–$1,032. Local York County pricing reported by regional providers runs $800–$1,500 for a standard sub-slab depressurization system, plus roughly $5–$10 a month in electricity to run the fan.
What drives the price
- Foundation type — a simple basement slab is cheaper to mitigate than a crawlspace, multiple foundation types under one roofline, or a slab with no accessible sub-area
- Home size and number of suction points needed for larger or divided foundations
- Whether cracks and openings need extensive sealing in addition to the pipe-and-fan system
- Local permit fees
- Testing costs before and after the install
Typical cost breakdown
| Item | Typical range |
|---|---|
| Radon testing (before) | $150 – $700 |
| Standard sub-slab depressurization system, York County | $800 – $1,500 |
| Larger home / complex foundation, national range | up to $2,500+ |
| Local permit | $25 – $150 |
| Monthly electricity to run the fan | $5 – $10 |
Sources: Angi, HomeGuide (national 2026 data), and Radon Safety Guide's York, PA-specific pricing, cited for comparison, not our own quote. Foundation type is the biggest single factor, so get an actual inspection before budgeting.
Want a real number for your property?
Tell us your foundation type and test result if you have one. We'll follow up with next steps.
Request a Free Quote