Iowa Radon Testing Rules for Landlords: What Renters Need to Know

Understanding your rights around radon testing can help keep you safe in your Iowa rental home. Iowa law now sets clear rules for landlords about radon testing, disclosure, and mitigation. This article explains these requirements in practical terms for renters so you know what to expect and what steps to take if you have concerns about radon in your rental unit.

What is Radon and Why Does It Matter for Renters?

Radon is a radioactive gas that can seep into homes from the ground. Long-term radon exposure is a leading cause of lung cancer among non-smokers. Iowa has some of the highest average indoor radon concentrations in the U.S., making radon awareness especially important for renters and landlords in this state.^[1]

Landlord Requirements for Radon Testing in Iowa

Iowa's recent law now requires most landlords to test for radon and disclose the results to tenants in residential rental properties. Here is what the law means for renters:

• Initial Testing: Landlords must perform initial radon testing in all residential rental properties. This must be done by a state-certified radon measurement specialist.
• Five-Year Retesting: After the initial test, retesting is required every five years.
• Disclosure: Landlords must provide written radon test results and any mitigation plans to current and prospective tenants before they sign or renew a lease.
• Mitigation: If test results show radon levels at or above 4.0 pCi/L, landlords have 90 days to start mitigation. This also must be completed by a certified radon mitigation specialist.

These requirements are set by the Iowa Department of Health and Human Services.

What Information Should Renters Receive?

Landlords must provide a copy of the most recent radon test results. They should also inform tenants of any ongoing or completed radon mitigation. You have the right to request this information if it is not given to you automatically.

If you are signing a new lease or renewing, expect to receive written notice—often called the Radon Gas and Mold Disclosure—before you agree to or renew your tenancy.

Relevant Official Form for Renters

• Radon Gas and Mold Disclosure (no official form number)
  • When used: Landlords must give you this form before you sign or renew a lease. It confirms you’ve been informed of the radon risk and the latest test results.
  • How it’s used: As a renter, review and keep a copy for your records. If you do not receive this, ask your landlord for it or reference Iowa's requirements.
  • View Iowa Radon Disclosure Guidance

What If a Landlord Does Not Comply?

Landlords who do not meet radon testing, mitigation, or disclosure requirements are subject to penalties and tenant remedies. As a renter, you can file a complaint or seek enforcement through Iowa’s tenant-landlord dispute channels.

If you believe your landlord has not complied with radon requirements, keep written records of your requests and all communications. This documentation can help if you need to file a complaint or seek further action.

Who Handles Tenant Complaints?

In Iowa, issues regarding residential tenancy rights are handled by the Iowa Small Claims Court and can also involve local code enforcement officials for health and safety violations. Tenancy laws are set forth in the Iowa Uniform Residential Landlord and Tenant Law (Iowa Code Chapter 562A).

Steps You Can Take If You’re Worried About Radon

• Ask your landlord for written radon test results or the Radon Gas and Mold Disclosure form.
• Discuss your concerns with your landlord and request mitigation if levels are high.
• If your request is ignored, contact your local housing inspector or consider a complaint using Iowa’s available forms and legal resources.

Proactive communication and knowing your legal rights can help ensure a safer home environment.

FAQs: Radon Testing in Iowa Rentals

1. Do landlords in Iowa have to test for radon?
   Yes. Most landlords of residential rentals must test for radon every five years and provide you with results.
2. What happens if radon levels are high in my apartment?
   If the test result shows 4.0 pCi/L or more, your landlord must start mitigation within 90 days and complete it through a certified specialist.
3. Can I do my own radon test if I’m concerned?
   Yes, but only testing done by a state-certified specialist counts under the law. Still, your results may help raise concerns with your landlord.
4. What should I do if my landlord won’t share radon test results?
   Request the results in writing and refer to Iowa’s law. If you still do not receive them, consider contacting your local code enforcement office or small claims court.

Conclusion: Key Takeaways for Iowa Renters

• Iowa law requires radon testing, retesting, and written disclosure for most rental units—protecting your right to a safe home.
• Always request official test results or disclosure forms before signing or renewing a lease.
• If your landlord doesn’t comply, you have options to seek enforcement and support from state resources.

Familiarize yourself with these rules to advocate for your health and safety in your Iowa rental.

Need Help? Resources for Renters

• Iowa Department of Health and Human Services – Radon Program: Guidance on radon testing and certified specialists.
• Iowa Small Claims Court: For landlord-tenant dispute resolution and complaints.
• Iowa Uniform Residential Landlord and Tenant Law (Chapter 562A): Full legislation governing tenant rights and landlord responsibilities.
• Iowa Legal Aid – Housing Rights: Free legal advice and resources for qualifying renters.

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1. Iowa Department of Health and Human Services: Radon in Homes
2. Iowa Legislation: Iowa Uniform Residential Landlord and Tenant Law, Chapter 562A
3. Iowa Judicial Branch: Small Claims Court - Landlord and Tenant Cases

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