Commercial Radon Testing Services  IN Cottage Grove, Minnesota

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Ensure Workplace Safety and Regulatory Compliance With Us

Radon is a naturally occurring radioactive gas that can be found in commercial properties throughout Cottage Grove, Minnesota, and the surrounding areas. Colorless, odorless, and tasteless, radon often goes undetected without specialized testing, yet prolonged exposure can pose serious health risks to employees, customers, and tenants. Commercial buildings, including offices, schools, healthcare facilities, and retail spaces, must maintain safe indoor air quality to protect occupants and meet safety regulations.


At 1st Defense Radon Testing And Mitigation, we provide professional, accurate, and efficient commercial radon testing services. With over a decade of experience, our team uses advanced testing equipment to detect radon levels, ensuring you have the information necessary to make informed decisions about mitigation or maintenance. We follow proven industry standards and provide detailed reports so property owners and managers can take immediate action if levels exceed EPA guidelines.

Our commercial radon testing process is designed to minimize disruption to your daily operations while delivering reliable results. We understand that each property has unique structural and environmental factors that can influence radon levels, which is why we tailor our testing approach to your specific building type and usage patterns.


By investing in regular radon testing, you not only protect the health and safety of building occupants but also maintain regulatory compliance and safeguard your property’s value. Whether you manage a single facility or multiple commercial locations, our services provide the accurate data you need for long-term safety planning.

Benefits of Our Commercial Radon Testing Services

Accurate Risk Assessment 

Our commercial radon testing delivers precise measurements using advanced detection equipment, ensuring you receive accurate, actionable results. By understanding the exact radon levels within your property, you can take targeted steps to address any risks. This thorough assessment helps safeguard the health of employees, customers, and visitors, while ensuring compliance with safety regulations and reducing liability risks for your business.

Regulatory Compliance

Many states and municipalities require radon testing in commercial buildings, especially schools, healthcare facilities, and government offices. Our services ensure you meet all local, state, and federal regulations by providing certified results that satisfy inspection requirements. Staying compliant not only protects occupants but also shields your business from potential fines, legal issues, and costly operational interruptions that can result from non-compliance or safety violations.

Increased Property Value 

Demonstrating safe radon levels enhances a property’s marketability and overall value. Whether you plan to sell, lease, or refinance, certified radon testing results reassure prospective buyers, tenants, or investors. Proof of testing and, if needed, mitigation provides confidence in the property’s safety, reduces negotiation barriers, and helps position your commercial space as a well-maintained, high-quality asset within a competitive real estate market.

Health Protection 

Prolonged exposure to elevated radon levels can significantly increase the risk of lung cancer, even for non-smokers. Our testing identifies hazards early, allowing prompt mitigation to protect building occupants. By addressing radon concerns proactively, you create a safer, healthier indoor environment, reduce potential liability, and demonstrate your commitment to workplace wellness and customer safety—key factors in fostering trust and maintaining strong professional relationships.

Customized Testing Solutions 

We tailor our commercial radon testing services to match your property’s specific needs, whether it’s a single retail space or a multi-building complex. Our team considers factors like building layout, usage patterns, and HVAC systems to ensure accurate results. Customized solutions mean more reliable data, targeted mitigation strategies if required, and maximum protection for your property and everyone who works, visits, or resides there.

Minimal Operational Disruption 

We understand the importance of maintaining daily business activities during testing. Our team works efficiently, scheduling testing to fit your operational needs while minimizing noise, interruptions, or access restrictions. This approach ensures accurate readings without affecting productivity, allowing you to prioritize both safety and business continuity. We provide timely reports so you can act quickly if elevated radon levels are detected.

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Protecting Workplaces with Commercial Radon Testing Services

Radon exposure can pose serious risks in commercial properties, impacting both employees and customers. With professional commercial radon testing, businesses can identify hidden radon levels and take corrective action before issues arise. For offices, retail spaces, schools, or healthcare facilities, testing ensures compliance with safety standards while promoting healthier indoor environments. By investing in radon testing, business owners demonstrate responsibility, safeguard productivity, and reduce liability risks. 1st Defense Radon Testing And Mitigation brings over 10 years of expertise to Cottage Grove and surrounding Minnesota areas, offering reliable testing solutions designed to protect your property and the people within it. Regular commercial testing provides peace of mind and long-term protection for your business.

Our Commercial Radon Testing Services

Short-Term Radon Testing

Ideal for quick assessments, our short-term testing uses specialized monitors to measure radon levels over a 2–7 day period. This service is perfect for initial evaluations or pre-lease checks, delivering fast, reliable results. We ensure accurate placement of testing devices and follow EPA protocols, providing you with dependable data to guide your next steps in managing building safety.

Long-Term Radon Testing 

Long-term testing spans 90 days or more, offering a comprehensive picture of radon levels throughout seasonal changes. This method provides the most accurate average exposure readings, ideal for properties with fluctuating radon levels. By understanding long-term trends, you can make informed decisions about mitigation, ensuring year-round safety and regulatory compliance for employees, customers, and tenants in your commercial building.

Continuous Radon Monitoring

Our continuous monitoring systems track radon levels in real-time, providing constant updates on indoor air quality. This service is ideal for high-traffic facilities or sensitive environments like healthcare and education. Continuous data allows immediate response to rising radon levels, ensuring consistent protection, compliance, and peace of mind for property managers, business owners, and occupants relying on a safe environment every day.

Pre-Lease or Pre-Sale Testing

Before leasing or selling a commercial property, our radon testing services provide essential documentation to reassure prospective tenants or buyers. By identifying and addressing any radon concerns beforehand, you maintain transparency, reduce negotiation delays, and protect property value. This proactive approach helps close deals faster, strengthens buyer confidence, and positions your property as a safe, well-maintained, and trustworthy investment opportunity.

Post-Mitigation Verification Testing

If your commercial building has undergone radon mitigation, our verification testing confirms the system’s effectiveness. We follow strict protocols to ensure accurate readings, providing documented proof of safe radon levels. This service offers reassurance for property managers, compliance officers, and stakeholders, ensuring the mitigation system continues to operate correctly and that the property remains a safe environment for everyone inside.

Scheduled Compliance Testing 

Many industries require periodic radon testing for compliance and safety certification. We offer scheduled testing programs tailored to your business, ensuring you never miss a deadline. This proactive service helps maintain ongoing compliance, protects building occupants, and eliminates the stress of tracking testing schedules. Our reliable results help you stay ahead of regulations and safeguard your reputation for safety.

FREQUENTLY ASKED QUESTIONS

  • How often should commercial buildings undergo radon testing?

    Commercial buildings should be tested at least every two years, though high-risk properties or those with past elevated levels may require annual testing. Regular testing ensures ongoing safety, meets compliance requirements, and addresses seasonal or structural changes that may affect radon levels.

  • How long does the commercial radon testing process take?

    Short-term tests typically take 2–7 days, while long-term tests last 90 days or more for greater accuracy. Continuous monitoring provides real-time readings. Our process is designed to minimize operational disruption while ensuring accurate results that meet or exceed industry and EPA testing standards.

  • Will radon testing disrupt business operations?

    No. We work with property managers to schedule testing at convenient times, minimizing interference with daily operations. Our equipment is non-invasive, requires minimal space, and can be placed discreetly, allowing your business to function normally throughout the testing period without interruptions.

  • What happens if elevated radon levels are detected?

    If levels exceed recommended guidelines, we’ll provide a detailed report and refer you to trusted mitigation specialists. Prompt mitigation reduces radon levels to safe ranges, protecting occupant health and ensuring compliance with all applicable commercial building safety standards and regulations.

  • Is commercial radon testing different from residential testing?

    Yes. Commercial testing often involves larger spaces, multiple floors, and varying ventilation systems. Testing requires strategic placement of devices to account for building layout and usage patterns, ensuring accurate readings across the entire property and meeting applicable commercial building codes and regulations.

  • Do you provide documentation for compliance purposes?

    Absolutely. We provide detailed, certified reports suitable for regulatory submissions, insurance purposes, or real estate transactions. These documents clearly outline testing methods, results, and recommendations, helping you maintain compliance, transparency, and safety assurance for stakeholders, inspectors, and potential buyers or tenants.

  • Can radon levels fluctuate in commercial buildings?

    Yes. Radon levels can change due to seasonal weather patterns, building renovations, or HVAC system adjustments. This is why regular testing or continuous monitoring is recommended to ensure the property remains within safe limits throughout the year, regardless of external changes.

  • Why choose professional testing over DIY kits?

    Professional testing provides greater accuracy, compliance-ready documentation, and expert interpretation of results. DIY kits may be inexpensive but often lack precision, proper placement, and official certification. Our services ensure reliable results, clear reporting, and actionable recommendations for your property’s safety and compliance.

Contact Us

why choose us
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Meticulous and Organized Process

I take pride in running a well-structured and detail-oriented operation, ensuring every step of your radon testing and mitigation is handled efficiently and without oversight.

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On-Time, Every Time

I value your time and maintain a punctual schedule, arriving when promised and completing projects within the agreed timeframe.

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Owner-Operated Service

As the owner, I personally handle every installation, giving you the quality, accountability, and personal touch only a small, hands-on business can provide.

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Proven Quality and Experience

With years of expertise and a dedication to doing the job right the first time, I deliver results you can trust for the long-term safety of your home or business.

Protect Employees and Clients with Accurate Radon Assessments

At 1st Defense Radon Testing And Mitigation, we combine over a decade of industry expertise with advanced testing technology to provide accurate, reliable results you can trust. Our team understands the unique structural and environmental challenges faced by commercial properties and delivers customized solutions that ensure comprehensive protection. From short-term testing for quick evaluations to long-term monitoring for ongoing assurance, we provide the insights necessary for proactive decision-making.


We also make the process as seamless as possible, minimizing disruption to your daily operations while delivering detailed reports quickly. Whether your property is a small retail location, a multi-story office complex, or an industrial facility, our testing services are tailored to meet your specific needs and compliance requirements.


Protecting your commercial space from radon hazards today not only safeguards those who rely on it but also strengthens your business’s reputation for safety, trust, and operational excellence.

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