Radon Testing in a Rental: Who Buys the Kit and What Happens Next?
A practical guide to how to test a rental for radon, with clear steps, household responsibilities, and an authoritative source.
Testing is the only way to know a rental's radon level because radon cannot be seen or smelled. Roommates can buy a kit together, ask the landlord to provide one, or hire a qualified measurement professional. Who pays depends on the lease, local rules, and what the landlord agrees to, so settle that question in writing before ordering anything.
Choose who will arrange and pay for the test
The cleanest arrangement is one named person who obtains the test and shares the full report with every tenant and the landlord. The EPA's radon hub says all homes should be tested and links to test-kit and professional resources, but it does not create a universal rule that one particular party must buy a rental's kit.
Start by checking the lease and contacting the state or local radon program. Ask the landlord whether the property has a previous result, whether a test is already planned, and whether written permission is needed to place a device in a shared or restricted area. If roommates pay, record whether the cost is split equally or reimbursed.
A short email avoids fuzzy memories later. Name the property, proposed test type, intended placement area, testing dates, payer, and who will receive the laboratory or professional report. Keep the reply with the result.
Use the kit exactly as directed
A radon test is useful only when the device is placed and handled according to its instructions. EPA says test kits are sold online and in home-improvement stores, while some state programs offer free or discounted kits. EPA also directs consumers to state radon programs for help finding qualified measurement professionals.
Pick the approach that fits the household:
- Use a consumer kit and follow every packaging direction for placement, timing, return, and analysis.
- Ask a qualified professional to test when tenants cannot control the area, the property has an unusual layout, or the parties want independent handling.
- Keep ordinary household activity from disturbing the device.
- Record the start and end dates, device location, kit identifier, and person who mailed or collected it.
- Share the complete result rather than paraphrasing a number in a chat.
Do not move the device to somebody's bedroom halfway through because that room feels damper. The result needs to correspond to the location and conditions required by the test instructions.
Read the result and document the next step
EPA recommends fixing a home when the radon result is 4 picocuries per liter, or pCi/L, or higher. EPA also recommends considering a fix when the result is between 2 and 4 pCi/L because no known level of radon exposure is risk-free.
A renter should send the report to the landlord promptly and ask for a written response. The message can request any follow-up measurement, professional assessment, or mitigation plan the landlord proposes. State and local radon programs can explain local guidance, credentialing, and rental requirements without roommates guessing about their rights.
Do not negotiate a technical fix by choosing equipment from a shopping site. EPA recommends contacting the state radon program for help finding qualified testing and mitigation professionals. A mitigation professional can evaluate the building and discuss an appropriate system with the property owner.
Frequently asked questions
Rental radon questions are best resolved with careful testing, written records, and location-specific advice from the state radon program or local housing authority.
Can one roommate run the test without telling anyone?
A tenant can often obtain a kit, but coordination protects the result from accidental disturbance and avoids disputes about access or placement. Check the lease and local guidance, then notify the landlord when permission or access is relevant.
Does a low result mean the rental will always stay low?
No single reading guarantees every future condition. Follow the kit or professional's interpretation and EPA guidance on when to test again, especially after building changes or a move to a different level of the property.
What if the landlord ignores a high result?
Keep the report and written correspondence, then contact the state radon program or the appropriate local housing authority for location-specific guidance. Rental duties and remedies vary by jurisdiction.
How HomeCo helps
HomeCo can keep the practical parts of a shared radon test from slipping through the cracks. Roommates can assign the kit order as a chore, split the agreed bill, announce the testing window, and add result or follow-up dates to the household calendar.
HomeCo is not a radon testing or legal service. Its role is coordination: preserving a clear household trail of who ordered the kit, when the test runs, what follow-up event is due, and which shared cost still needs attention.