RADON Assessment in Real Estate
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- RADON Assessment in Real Estate
How a RADON Assessment Fits into a Real Estate Transaction
Here’s how a RADON Screening Assessment works:
C-NRPP Measurement Professional is contacted to conduct the assessment.
The homeowner or occupant must agree to the test and maintain closed-house conditions during the test period.
The test device must remain in place for a minimum of 4 days - longer if possible.
A visual inspection of the dwelling shall be conducted by a C-NRPP-certified professional.
The professional follows strict placement and reporting standards to ensure accurate and reliable results.
Understanding the RADON Assessment Report
The RADON Screening Assessment Report provides results as Green, Yellow, or Red.
🟢 Green Test Result
- 75 Bq/m³ or less (heating season, Winter)
- 50 Bq/m³ or less (outside heating season, Summer)
🟡 Yellow Test Result
- Between 75–400 Bq/m³ (heating season) or 50–400 Bq/m³ (outside heating season)
- Higher likelihood that annual average RADON exceeds 200 Bq/m³
🔴 Red Test Result
- Greater than 400 Bq/m³
- Strong likelihood that annual average RADON exceeds 200 Bq/m³
A “Green” result does not guarantee that the annual average RADON is below 200 Bq/m³.
A long-term follow-up test (91+ days during the next heating season) is still recommended.
✅ Key Takeaway
RADON should never stop a real estate transaction.
With proper testing and mitigation, every home can be made safe - protecting the health and peace of mind of both buyers and sellers.