Radon Mitigation · Saint Augustine, FL
Real Estate Radon Testing in Saint Augustine, FL
Transaction-timeline testing, plus the radon notice Florida law puts in every sale and lease contract — and what it does and does not mean.
Real estate radon testing runs on someone else's clock. The inspection period is finite, the result has to be defensible to the other side, and the test has to be done by someone whose measurement will stand up. That makes it a different job from testing your own home at leisure.
The notice in your contract is not a disclosure about the house
Every Florida buyer sees radon language in the paperwork and most assume it means something was found. It does not. Fla. Stat. 404.056(5) requires a generic notice on at least one document executed at or before the contract for sale, or at execution of a rental agreement. The statutory wording is:
“RADON GAS: Radon is a naturally occurring radioactive gas that, when it has accumulated in a building in sufficient quantities, may present health risks to persons who are exposed to it over time. Levels of radon that exceed federal and state guidelines have been found in buildings in Florida. Additional information regarding radon and radon testing may be obtained from your county health department.”
That paragraph is in every Florida contract regardless of the property. It is a statutory warning, not a statement about the building you are buying, and it is not a test result. The only thing that tells you about this house is a measurement.
Timing inside the inspection period
- A forty-eight hour continuous monitor test is the standard for a transaction.
- Add a day either side for placement and retrieval — call it four days from booking to report, and book it at the front of the inspection period rather than the back.
- Closed-house conditions must hold for twelve hours before the test starts and throughout. In a vacant listing that is easy; in an occupied one it needs a conversation.
- A DIY mail-in kit is not accepted for a real estate transaction.
What St. Johns County results usually look like
Being straight about this is more useful than drama. A transaction radon test is cheap relative to everything else in a closing, and a clean number closes the question for the buyer permanently. Nobody can tell you the odds for your specific house in advance — that is the entire point of measuring it — but the cost of finding out is small enough that it is rarely worth arguing over.
When a result does come back elevated, it is a negotiable item like any other inspection finding, and a well-understood one. A mitigation system is a defined, one-day scope of work with a confirmable outcome, which makes it easier to price into a deal than most repairs.
If the number comes back high mid-transaction
- Confirm before you renegotiate. One short-term reading during a storm front is thin evidence for a price adjustment.
- Get a quote from a state-certified mitigation business — under Fla. Stat. 404.056(2) only a certified business may legally perform the work, and there are roughly two dozen in Florida, so quotes take longer to assemble than for ordinary trades.
- Decide who installs and who pays. Sellers often prefer a credit; buyers often prefer to choose their own installer.
- Retest after installation. A post-mitigation measurement is required of certified businesses anyway, and it is the document that closes the issue at the table.
Sellers: testing before you list
A current test in hand removes a variable from the negotiation and prevents a surprise in the inspection period. It is a cheap piece of paper to have. And if it does come back high, you have found out on your own timeline rather than the buyer's — a mitigation system with a post-install confirmation test is a fixed, resolved line item rather than a live objection three days before closing.
How this works
We are not a contractor and we do not do the work. What we do is put Saint Augustine homeowners in front of local radon mitigation contractors, and give you enough of the picture beforehand that you can tell a fair quote from a padded one. Call (904) 395-5498 or send a few details and we will connect you.
Real Estate Radon Testing questions, answered
The contract has radon language in it. Does that mean radon was found?
No. Fla. Stat. 404.056(5) requires a generic radon notice on at least one document executed at or before the contract for sale, or at execution of a rental agreement. It appears in every Florida contract regardless of the property and says nothing about the building you are buying. Only a measurement does that.
How fast can a real estate radon test be done?
The measurement itself runs forty-eight hours. Allow a day either side for placement and retrieval — roughly four days from booking to report. Book it at the start of the inspection period, not the end.
Will a mitigation system hurt the sale?
Generally the opposite. An installed system with a post-mitigation test showing the level below 4.0 pCi/L converts an open question into a documented, resolved one. Buyers respond better to a solved problem than to an untested house.
Who pays for mitigation in a transaction?
It is negotiable, like any inspection finding. Sellers frequently offer a credit; buyers frequently prefer to select their own certified installer. What matters is that the work is done by a Florida-certified mitigation business and confirmed by a post-installation test.
Other services in Saint Augustine
Radon Testing
A measured test with a calibrated monitor — and why no county-level statistic, in either direction, tells you anything about your house.
Learn more →Radon Mitigation System Installation
Sub-slab depressurization installed by a Florida-certified mitigation business — and how to verify that certification before anyone touches your house.
Learn more →Radon System Inspection & Repair
Diagnosing systems that are running but not working, plus the mandatory retesting rules that apply to St. Johns County schools and licensed facilities.
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