Radon testing for rental property due diligence should map the areas people occupy, the test protocol, prior results, qualified providers, mitigation systems, tenant access, operating responsibility, capital cases, and verification records. It should remain separate from the federal 1031 exchange file. A radon report does not change who must control taxpayer, title, identification, receipt, qualified-intermediary, basis, liability, and reporting questions.
Map occupied and occupiable spaces
Inventory dwelling units, lower-level bedrooms, offices, community rooms, basements, crawlspaces, ground-contact commercial space, vacant units, future conversions, and manufactured structures. Record which areas were actually tested and which were excluded.
Reconcile every report to its protocol
Capture date, duration, device, laboratory or monitor, placement, closed-building conditions, interference controls, weather or operating notes, result by location, certification, and changes since testing. One result should not be silently applied across a multi-building asset.
Verify provider and mitigation evidence
Confirm current measurement and mitigation credentials, required contractor or trade licensing, scope, conflicts, device calibration or laboratory path, design assumptions, permits where applicable, electrical work, discharge location, warranties, alarms, and post-mitigation test.
Plan tenant access and communication
Assign lawful access, notice, device protection, vacancy coordination, result handling, privacy, complaint escalation, temporary controls, work scheduling, and confirmation of completion. Counsel should address property-specific disclosure, lease, habitability, and communication duties.
Underwrite operating and capital cases
Model initial and repeat testing, professional fees, mitigation design and installation, electrical work, monitoring, fan replacement, energy use, access coordination, vacancy or disruption, post-work testing, and reserve scenarios using qualified property evidence.
Protect the exchange calendar
Testing, retesting, mitigation design, bids, permits, tenant coordination, lender or insurer review, and repairs do not automatically extend federal identification or receipt deadlines. Escalate diligence early while the QI, CPA, and attorney control exchange structure and tax questions.
FAQ
Can one radon test cover a multifamily property?
Do not assume it can. A qualified professional should define the sampling plan for the building layout, ground-contact areas, occupied spaces, HVAC zones, and transaction purpose.
What radon records should a rental-property buyer request?
Prior reports, tested locations, devices, protocols, certifications, mitigation design, permits, invoices, warranties, alarms, fan or system service, complaints, tenant communications, access records, and post-work tests can all matter.
Does a radon issue change the 1031 deadline?
No automatic extension should be assumed. The investor should coordinate property diligence immediately while the qualified intermediary, CPA, and attorney control federal exchange deadlines and structure.
Primary sources and limits
- Nevada Division of Public and Behavioral Health, Radon Program
- University of Nevada, Reno Extension, Certified Radon Testers
- U.S. EPA, Home Buyer’s and Seller’s Guide to Radon
- IRS, Instructions for Form 8824
General education only. A radon map, neighboring result, seller statement, listing description, test summary, device reading, report, proposal, permit, invoice, mitigation system, or article does not establish the current radon level, health outcome, contract right, legal duty, code compliance, future performance, insurance coverage, financing result, tax treatment, or investment suitability for a specific property. Verify the exact property and occupied areas, test date, location, device, protocol, closed-building conditions, interference controls, tester and mitigator credentials, contractor licensing, report, mitigation design, permits where applicable, post-work test, warranties, contract dates, disclosure and communication duties, financing, insurance, and professional roles with the Nevada Radon Education Program, qualified radon measurement and mitigation professionals, licensed contractors, the responsible building department, insurer, lender, attorney, CPA, qualified intermediary, title or escrow company, health professionals, and other qualified advisers as appropriate. No individualized medical, legal, tax, lending, insurance, securities, compliance, contract, property-management, or investment advice is provided. A CPA, attorney, and qualified intermediary must evaluate the taxpayer, investment-use position, exchange structure, acquiring party, title, deadlines, identification, receipt, basis, liabilities, boot, reporting, and vendor documents.
Related: verifying the exchange provider and change controls, mapping property systems and operating records, start an exchange-property conversation.