Case Study: Radon Mitigation for Real Estate Sale in Phoenix, AZ
- Kaber Robinson
Background
A single-story, 2,000-square-foot home in the Vista Verde neighborhood of Phoenix, Arizona, was being prepared for sale when a routine radon test revealed elevated levels of 10 pCi/L, more than twice the EPA’s action threshold. The property, built in 1987 on a slab foundation, required mitigation to meet real estate disclosure requirements and ensure a safe environment for potential buyers. The homeowners sought a quick, effective solution to address the radon levels and improve the home’s appeal to buyers.
Client Concerns
- Compliance: The sellers needed to meet Arizona real estate disclosure requirements regarding radon levels.
- Health and Safety: The elevated radon levels posed a potential health risk for future occupants.
- Energy Costs: The homeowners wanted to seal the foundation to improve efficiency and enhance buyer appeal.
Objectives
- Reduce radon levels to below 4 pCi/L in compliance with EPA recommendations.
- Improve overall air quality and reduce dust infiltration caused by foundation gaps.
- Prepare the property for sale with a documented mitigation solution to boost buyer confidence.
Process Description
Initial Inspection and Testing:
- Pre-mitigation radon levels: 10 pCi/L.
- Air quality assessment indicated high particulate matter levels: PM2.5 at 35 µg/m³, classified as “Moderate.”
Radon Mitigation System Installation:
- Installed a sub-slab depressurization system, including:
- A high-efficiency radon fan to safely vent radon gas above the roofline.
- PVC vent pipes connected to perforated suction points under the slab.
- Sealed cracks in the slab foundation to minimize radon entry and improve energy efficiency.
- Installed a sub-slab depressurization system, including:
Post-Installation Testing:
- Radon levels reduced to 1.5 pCi/L, well below EPA guidelines.
- Air quality improvement: PM2.5 reduced to 12 µg/m³, classified as “Good.”
Measurable Results
Radon Levels Before and After Mitigation
Air Quality (PM2.5 Levels) Before and After Mitigation
Estimated Energy Savings: With foundation cracks sealed, the HVAC system is projected to run more efficiently, potentially saving $30/month on energy costs.
Client Testimonial
“When we discovered the high radon levels, we knew we had to address the issue before putting our home on the market. The team at Arizona Radon was incredibly professional and explained everything clearly. The post-installation results speak for themselves—radon levels are now safe, and the air quality is noticeably better. Knowing the mitigation system is in place gives us and potential buyers peace of mind.”
— Jerry Kurth, Vista Verde, Phoenix, AZ
Visual Evidence
Radon Levels Data:
| Stage | Radon Level (pCi/L) |
|---|---|
| Before Mitigation | 10 |
| After Mitigation | 1.5 |
Air Quality Data:
| Stage | PM2.5 Level (µg/m³) |
|---|---|
| Before Mitigation | 35 |
| After Mitigation | 12 |
Long-Term Benefits
- Enhanced Safety: Radon levels now meet EPA safety standards, providing a safer environment for future occupants.
- Energy Efficiency: Sealing the foundation reduces air leaks, improving HVAC performance and lowering energy costs.
- Increased Marketability: The mitigation system adds value to the home, making it more appealing to prospective buyers.
Project Cost
The total cost of the radon mitigation project was $2,100, which included system installation, foundation sealing, and follow-up testing.
Conclusion
Are you preparing to sell a home in Phoenix and concerned about radon levels? Ensure compliance with real estate disclosure requirements and boost buyer confidence with our proven radon mitigation services. Contact us today to schedule a consultation!
Bio:
Kaber Robinson, a second-generation radon mitigator and the founder of Arizona Radon, has accumulated 30 years of experience in the industry. A nationally certified radon measurement and mitigation professional, Kaber’s commitment to health and environmental sustainability led him to the radon field after graduating from a renowned technical college in Kansas.
Gaining invaluable experience with a leading radon mitigation company in the United States, he traveled extensively to install systems across various environments. Today, Kaber applies his extensive knowledge and practical skills at Arizona Radon, where he ensures that each project adheres to the strictest standards of quality and safety.
