How to Sell a House With Radon Issues in Florida

Radon isn't a topic most Florida homeowners think about — the state has historically been categorized as low-to-moderate risk compared to states like Pennsylvania or Iowa. But elevated radon levels do occur in Florida homes, particularly in central Florida counties where phosphate-rich soils contribute to naturally occurring radon. When a home inspection turns up elevated radon, sellers face a familiar dilemma: spend money on remediation, negotiate a credit, or find a buyer who will take the property as-is.

A cash sale is often the cleanest solution for sellers who don't want to manage the remediation process before closing.

What Is Radon and Why Does It Matter in a Florida Home Sale?

Radon is a naturally occurring radioactive gas that forms from the decay of uranium in soil and rock. It's colorless, odorless, and tasteless — detectable only through testing. Outdoors, radon disperses harmlessly. Inside a home, it can accumulate to levels that the EPA considers a health risk, particularly with long-term exposure. The EPA's action level is 4 picocuries per liter (pCi/L) — at that level or above, the agency recommends mitigation.

In Florida, radon enters homes primarily through slab-on-grade construction — the most common foundation type in the state. The gas seeps through cracks in the concrete slab, utility penetrations, and gaps around pipes and conduits. Homes with tighter construction and limited ventilation can accumulate radon that would otherwise disperse in an older, more porous structure.

For a home sale, elevated radon matters because it's a material fact. Florida law requires sellers to disclose known material defects. If you've had a radon test that came back above the EPA action level and you know about it, that information must be disclosed to buyers. Hiding a known radon issue creates legal liability that outlasts the closing.

How Does Elevated Radon Affect a Traditional Home Sale?

When a buyer's home inspection includes a radon test — increasingly common in Florida as awareness of the issue has grown — a result above 4 pCi/L typically triggers a negotiation. The buyer will usually request one of three things: seller-funded remediation before closing, a credit at closing to cover the buyer's remediation cost, or a reduction in the sale price.

For sellers, this negotiation is an unwelcome complication that arrives mid-transaction. Remediation before closing requires hiring a licensed radon mitigator, waiting for the system installation, conducting a follow-up test to confirm the system is working, and providing documentation to the buyer. That process adds cost, time, and logistics at a point in the sale when both parties are already managing the final steps toward closing.

It's worth noting that radon mitigation in a Florida slab-on-grade home is a well-understood, relatively affordable fix — typically $800 to $2,500. The system (usually sub-slab depressurization) draws the gas from beneath the slab and vents it outside. It runs continuously on a small amount of electricity and reduces radon levels significantly in virtually all cases. If you're planning a traditional listing, getting the system installed before listing removes the issue from the table entirely — a buyer who sees a working mitigation system and a post-mitigation test result below 2 pCi/L can move forward without negotiating around it.

But if you don't want to manage the process, or if the elevated radon is one of several property condition issues you're dealing with, a cash buyer offers a simpler path.

Can You Sell a House With Elevated Radon Levels As-Is?

Yes. Florida law doesn't prohibit the sale of a home with elevated radon — it requires disclosure of known material facts, including known radon test results. A buyer who knowingly purchases a home with elevated radon, disclosed and documented, takes ownership of that condition. A cash buyer who purchases properties in as-is condition is doing exactly that — buying with full knowledge of the condition, pricing the offer accordingly, and planning to address the issue after closing.

FastSellEasy buys homes in as-is condition throughout Florida, including homes with radon test results above the EPA action level. We don't require mitigation before closing. We account for the condition in our offer and handle the remediation ourselves after taking ownership. For sellers who want to avoid the hassle of the remediation process — or who are dealing with multiple property condition issues and don't want to address each one separately — a cash sale eliminates that entire layer of the transaction.

What Should You Do If a Radon Test Comes Back High?

If a home inspection radon test returns above 4 pCi/L, here are your realistic options:

Option 1 — Install a mitigation system before closing. Hire a licensed Florida radon mitigator, have the system installed, and conduct a post-mitigation test to confirm the results. Provide the documentation to the buyer. This typically costs $800 to $2,500 and takes one to two weeks. It resolves the issue cleanly and allows the sale to continue without a price reduction or credit negotiation.

Option 2 — Negotiate a closing credit. Agree to credit the buyer at closing for the cost of mitigation — typically $1,000 to $2,000. Some buyers prefer this because they can choose their own contractor and schedule the work on their timeline after taking ownership. This keeps the transaction moving and avoids the pre-closing installation process, but it requires negotiating the credit amount, which can slow things down.

Option 3 — Sell as-is to a cash buyer. If remediation, negotiation, and the associated delays aren't what you want to deal with — or if the elevated radon is one of several property issues — selling to a cash buyer who buys as-is removes the issue from the equation. The offer reflects current condition; the buyer handles remediation after closing. This is often the fastest path when multiple condition issues are present simultaneously.

If you're considering a cash sale of a Florida home with elevated radon or other condition issues, call (888) 913-9906 or visit our homes page. We'll review the property and provide a written cash offer within 24 to 48 hours — no obligation, no repairs required, and no remediation needed before closing.