Dataset · v1.0.0 · 4 rows
Negotiation outcome taxonomy
The four ways an elevated radon result resolves in a residential transaction, what drives each, which party carries the residual risk, and what should be in writing.
The data
| Outcome | Typical drivers | Residual risk held by | Must be in writing | Common failure |
|---|---|---|---|---|
| Seller installs before closing | Seller wants a clean file, timeline permits, buyer has leverage or the result is well above the action level. | buyer | Credentialed contractor, written scope, post-mitigation verification test completed and delivered before closing, warranty transfer. | Work completed to a deadline with no verification test, leaving the buyer owning equipment of unknown performance. |
| Seller credits the buyer at closing | Timeline is tight, buyer wants control of contractor selection, or the parties prefer a number to a project. | buyer | The credit amount derived from a written quote on the actual house, not an average; who holds responsibility if scope grows. | Credit sized from a national figure and short of the real scope once a crawl space or second suction point appears. |
| Cost split between the parties | Modest result, balanced leverage, both sides want the deal to proceed without conceding the principle. | shared | Who contracts the work, who selects the contractor, and what happens if the verification test fails. | Neither party owns the outcome, so the verification test and any remedy fall between them. |
| Buyer absorbs the cost | Strong seller market, waived or limited inspection contingency, or a price that already reflected condition. | buyer | Nothing is negotiated, but the buyer should still test and budget from a written quote rather than an assumption. | Testing skipped along with the contingency, so the buyer inherits an unmeasured house rather than a measured one. |
Download and API
- negotiation-outcome-taxonomy.csv — 4 rows, comma separated.
- negotiation-outcome-taxonomy.json — rows plus the field schema, methodology, and version. Stable URL, same origin, no key required.
- index.json — the catalogue of every dataset, for programmatic discovery.
Licence. CC BY 4.0 — reuse with attribution to Radon Connect and a link to the dataset page.
Field schema
| Field | Type | Description |
|---|---|---|
outcome | string | How the finding resolves. |
drivers | string | Conditions under which this outcome tends to occur. |
residualRiskHolder | enum buyer · seller · shared | Who bears the risk if the remedy proves inadequate. |
mustBeWritten | string | The terms that prevent this outcome going wrong. |
commonFailure | string | How this outcome most often disappoints. |
Methodology
The question this answers
When an elevated radon result appears during a sale, what are the actual resolutions and what drives each?
How a row comes to exist
- The four outcomes are exhaustive of how a negotiated inspection finding can resolve: one side performs, one side pays, both pay, or neither does.
- Driver, risk-holder, and failure columns are editorial analysis grounded in the contract mechanics described across this platform’s transaction guides.
Inclusion and exclusion
- Residential transactions in the ten states we serve, none of which requires a seller to test or mitigate an existing home.
- Transactions subject to a specific lender or programme requirement are excluded, because that requirement rather than negotiation governs.
What this dataset cannot tell you
- This is a taxonomy, not frequency data. We hold no observations on how often each outcome occurs and do not imply a distribution — see the negotiation outcome collection instrument for what would be required to publish one.
- Nothing here is legal advice. What a contract requires and what a deadline means are questions for an agent and, where warranted, an attorney.
- Regional custom varies considerably. The drivers column describes tendencies, not rules.
Related
- Home-Sale Negotiation Outcome Frequency Dataset — Instrument published, N = 0. The taxonomy exists; the distribution does not yet.
- Radon Mitigation Cost Driver Index — The variables that move a quote, their direction, and their relative magnitude — no invented dollar figures.
- Who pays — It is negotiated, not mandated. Contract language, local practice, and leverage decide it — and preparation changes the outcome more than argument does.
- Negotiating radon repairs — What each side actually holds, and how the deal usually lands.
- Buyer credits vs mitigation — A direct comparison, and the situations where each one wins.
- Failed test during inspection — The inspection-window playbook, in the order the clock demands.
- Research Center — every dataset, with its provenance and status.
- Research methodology — how this platform builds and checks content.
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
Get quotes from credentialed local contractors
Free to request and no obligation. We verify credentials with the issuing authority before any request routes to a contractor.