Negotiating a radon finding
A radon negotiation goes badly in predictable ways: no written quote, no verification test, an under-sized credit, or a promise to finish after closing. All four are avoidable on paper.
Nothing here is legal advice. The amendment language is your agent’s and, where the stakes warrant, your attorney’s.
Before you ask for anything
Confirm the test was validly conducted — hard to reverse later
A compromised test is one the other side can reasonably refuse, and arguing from it wastes days.
Get a written quote from a credentialed contractor who has seen the house — hard to reverse later
This is the difference between a request and a number.
Confirm which soil-contact zones the quote covers — hard to reverse later
A quote omitting a crawl space has priced a different house, and the gap lands on whoever owns it.
Check how many days remain and whether an extension is available — hard to reverse later
Ask your agent today rather than at the deadline.
Put these in the amendment
Certified or licensed contractor, credential named — hard to reverse later
Not "a qualified contractor" — a credential you can verify.
The written scope, attached or referenced — hard to reverse later
Otherwise "install radon mitigation" is the whole specification.
Post-mitigation verification test performed and delivered before closing — hard to reverse later
Leverage disappears at the table. This is the single most important line.
What happens if verification comes back above the action level — hard to reverse later
Names the remedy while both parties still care.
Warranty transfer, if a system is being installed
Worth asking for and frequently granted.
Who restores any opened finished surfaces, and to what standard
Where finished-basement disputes concentrate.
The four traps
Do not accept an unverified installation to make a closing date — hard to reverse later
You are accepting equipment of unknown performance.
Do not size a credit from a national average — hard to reverse later
We publish no such figure precisely because it misses. Use the quote.
Do not accept a promise to complete after closing without an escrow or holdback in writing — hard to reverse later
A promise is worth what the document says.
Do not retest repeatedly hoping for a lower number — hard to reverse later
Transparent to the other side, and it burns the days you need for the remedy.
After agreement
Collect the verification result, dated, before closing — hard to reverse later
This is the document that proves the work achieved something, and it is far harder to obtain after closing.
Collect the credential number, scope, and warranty documents
Starts the folder the next buyer will ask for.
Keep every written communication about the radon item
If a dispute arises later, this file is the record.
What this checklist does not cover
A checklist that pretends to be complete is worse than one that states its edges. These are the things deliberately left out, each with somewhere better to go:
- Nothing here is legal advice. Amendment language, enforceability, and deadlines belong with your agent and, where the stakes warrant, an attorney.
- It does not tell you what to ask for in dollars.
- It does not tell you how often each outcome occurs — we publish the taxonomy, not a distribution.
Confidence and limits of this page
Every decision resource on this platform states its own boundaries. This is not a disclaimer — it is the part of this checklist you should read before relying on it.
- What we knowClaims on this page we stand behind, each traceable to an approved source or to observable structure.
- The four negotiation outcomes are exhaustive of how a negotiated inspection finding can resolve.
- A post-mitigation verification test is the deliverable of a mitigation job, and buyers generally want it complete before closing because leverage ends at the table.
- No state we serve requires a seller to test or mitigate, which is why every item here is negotiated rather than mandated.
- What we do not knowQuestions you may reasonably have that this page does not answer.
- How often each outcome occurs, and what a typical credit actually is. Our frequency instrument holds zero observations and we publish no cost benchmark.
- Whether a specific amendment clause is enforceable in your state.
- What research would settle itWhat it would actually take to answer the above — naming it is the difference between honesty and hedging.
- Three hundred coded post-closing reports would establish the outcome distribution. Two hundred and fifty written quotes would establish the credit-sizing question. Both instruments are published and both hold nothing.
- A review of radon amendment language across states would establish which clauses actually hold up. That is legal research nobody appears to have published.
- What we do not claimClaims you might expect to find here and will not, with the reason.
- We do not give legal advice and do not supply amendment language.
- We do not claim a universal rule on who pays.
- We do not claim a dollar figure for any remedy or credit.
- What we cannot independently verifyFacts this page relies on that we could not confirm ourselves.
- Your contract, your state’s forms, and your local practice. None is visible to us and all three govern.
Sources
- U.S. EPA — Radon
- U.S. EPA — Home Buyer’s and Seller’s Guide to Radon
- U.S. EPA — A Citizen’s Guide to Radon
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