Real Estate Radon Testing in Saint Augustine, FL

Real estate radon testing gives buyers, sellers, and agents a documented radon result inside a closing window. Florida law requires a radon disclosure in residential sale contracts and leases. A short-term test under closed-house conditions typically runs forty-eight hours, producing a written report you can attach directly to the contract.

Does Florida require radon testing to sell a house?

No, but it requires disclosure. Florida law obligates residential sale contracts and rental agreements to carry a radon gas notice informing the buyer or tenant that radon may be present and that testing is available. Disclosure is not the same as testing, and the notice tells a buyer nothing about your specific home. That gap is why radon contingencies have become routine here: the buyer reads the notice, then asks for a test.

How fast can you test before closing?

A standard real estate test uses a continuous radon monitor placed for forty-eight hours. We can usually place within a day or two of your call, retrieve on schedule, and deliver the written report the same day the monitor comes out of the house. From first phone call to report in hand is commonly three to four days.

Closed-house conditions, and how a test gets invalidated

For a real estate test, the house must be kept under closed-house conditions for twelve hours before placement and for the entire test period. In practice that means:

• Windows and exterior doors stay shut, except for normal entry and exit.
• HVAC runs as it normally would. Do not switch the system off or prop the house open to cool it.
• No whole-house fans, window fans, or dehumidifiers venting to the outdoors.
• The monitor stays where it was placed, undisturbed, at the correct height.

Continuous monitors log interference. If a window is opened, if the unit is moved, or if the house is aired out mid-test, the data shows it and the result is void. That protects everyone in the transaction, and it is the main reason a mail-in kit is not accepted for a sale.

What if the result comes back above 4.0 pCi/L?

It becomes a negotiation, not a deal-breaker. Mitigation is a modest line item next to the price of a house, and it installs in a day. The common paths:

• The seller mitigates before closing, and a post-mitigation test confirms the fix.
• The seller issues a credit at closing and the buyer arranges mitigation afterward.
• The cost is split, or funds are held in escrow until the system is installed and verified.
• The buyer accepts the result and handles it on their own timeline.

In practice, a documented system with a passing post-test becomes a selling point. The problem was disclosed, solved, and proven, which is a stronger position than an untested house.

Can you test and mitigate inside the closing window?

Usually, yes. A forty-eight hour test, a one-day installation, and a post-mitigation test can fit inside most closing timelines if we start promptly. Tell us the closing date up front and we will tell you honestly whether it fits.

Who pays for the test?

Convention around here puts the test with the buyer as part of inspection, and mitigation, if needed, becomes a negotiated item. There is no rule. Sellers who test before listing often do better, because they control the timing and the narrative rather than discovering a 6.8 pCi/L result eleven days before closing.

Why choose Saint Augustine Radon Pros?

We focus on one thing: radon mitigation for homeowners in Saint Augustineand the surrounding area. Call (904) 395-5498 and we will walk you through your options, what it costs, and how soon we can get to you.