Radon services for buyers, sellers, and agents

Radon Testing and Mitigation for Billings Real Estate

Keep testing, mitigation, documentation, and the closing timeline moving with one clear project plan.

Illustration of a radon monitor positioned in a lower-level living area during a home transaction

Treat radon as a decision path, not a last-minute surprise

A real-estate radon test must answer a practical question within a defined contract window. We help organize the measurement, result review, mitigation scope, and post-mitigation documentation around that deadline.

Montana law requires a radon disclosure statement in covered sale documents and requires known prior test results and mitigation evidence to be provided. This site offers education, not legal advice. Use the current statute and your licensed real-estate or legal professionals for the transaction.

Who needs what

Buyers

Request the full test history, understand the new test plan, and preserve enough time to evaluate results and proposals.

Sellers

Gather prior reports and system documents early. Fixing an issue before listing may create more time for bids and verification.

Agents

Track deadlines, keep technical interpretations with qualified professionals, and make documents easy for both parties to review.

Inspectors

Use current measurement standards, document controls and placement, and define the scope of the radon service clearly.

A transaction-ready sequence

Each action has a clear output. Keep the report and system decisions in writing.

  1. Collect records

    Ask for prior test reports, mitigation evidence, system labels, and maintenance records.

  2. Set the test plan

    Confirm method, device security, placement, start and stop times, access, and report delivery.

  3. Protect the deadline

    Know the inspection, objection, resolution, and closing dates before the test begins.

  4. Evaluate the result

    Use EPA guidance and the applicable protocol. Avoid making a decision from a cropped screenshot alone.

  5. Scope mitigation if needed

    Get written proposals that address the actual foundation and include verification and documentation.

  6. Close the loop

    Complete post-mitigation testing and transfer the report and system records with the property file.

Common timing and scope questions

Existing test age

A buyer may request a new test when an older result no longer represents current conditions.

Renovation history

Foundation, addition, HVAC, and air-sealing changes can justify retesting.

Occupancy plan

A buyer’s intended use of a lower level can affect the appropriate test location.

Independent verification

A separate post-mitigation test reduces potential conflict concerns.

Proposal detail

The parties need a defined scope, routing plan, electrical responsibility, documentation, and verification.

Contract control

Technical guidance does not replace the deadlines and remedies in the signed agreement.

Documents to gather

  • The current purchase agreement and all inspection-related deadlines
  • Every available radon report, including device, dates, location, and result
  • Any mitigation proposal, invoice, warranty, system diagram, or post-test
  • Seller disclosure documents and evidence of known prior mitigation
  • The contact roles for buyer, seller, agents, inspector, and chosen provider

What should transfer with the home

  • Complete pre- and post-mitigation test reports
  • A description or diagram of the installed system and its labeled components
  • Operating and maintenance instructions from the installer
  • Applicable permits, electrical records, invoices, and written warranty
  • The date and result of the most recent test

Frequently asked questions

Questions homeowners ask

Straight answers about the work, timing, and what to expect at your property.

  1. Does Montana require a radon disclosure statement?

    MCA 75-3-606 requires a radon disclosure statement on at least one covered transaction document and addresses disclosure of known testing and mitigation evidence. Review the current statute and obtain professional advice for your contract.

  2. Can a transaction continue after an elevated result?

    Radon can often be reduced, but the parties must work within their contract. A clear proposal, written responsibility, realistic schedule, and post-mitigation test help define a resolution.

  3. Should a seller test before listing?

    Early testing can create more time to confirm a result, compare mitigation proposals, complete work, and document the outcome. The right choice depends on the seller’s timeline and professional advice.

  4. What should an agent avoid promising?

    Avoid guaranteeing a test result, mitigation cost, installation date, system outcome, or legal remedy. Keep technical interpretations and contract advice with the qualified professionals responsible for them.

Bring the right details to the estimate

Share the test result, foundation type, ZIP code, and deadline so our team can review a useful project summary.

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