Radon Testing in Murfreesboro Home Sales

With so many people moving into Rutherford County from Nashville, out of state, and the region's big employers, homes in Murfreesboro and Smyrna change hands quickly. A radon test is a standard add-on to many home inspections now, and in a Zone 1 county it often turns up a number worth talking about. Here's how radon usually plays out in a Tennessee sale, for buyers and sellers. This is general information; your contract and agent control the specifics.

Buyers: getting the test done in time

Tennessee purchase agreements generally set an inspection period for the buyer. Book the radon test right when you book the home inspection, because a professional test runs at least 48 hours, and setup, pickup, and reporting add time. If your period is short, ask the inspector or radon pro to set the monitor the same day as the inspection.

What to expect

• Continuous radon monitor. Logs hourly readings and flags disturbances.
• Closed-house conditions. Windows and outside doors closed 12 hours before and during the test. The seller has to cooperate in an occupied home.
• Placement. The lowest lived-in level, usually a main-floor room in a crawl space home or the basement in a home that has one.
• A report with the average and an hour-by-hour chart.

If the number is 4 pCi/L or higher

The usual paths:

• Ask the seller to mitigate before closing and provide a post-mitigation test below 4 pCi/L.
• Ask for a credit or price reduction and handle the system yourself after closing, so you choose the installer and pipe route.
• Renegotiate or terminate, if your contract permits.

Crawl space homes are a special case. If the seller is installing the system, ask what membrane is being used and how it's sealed. A quick, thin-plastic job may pass the test but won't hold up to the next HVAC tech crawling across it.

If it's below 4 pCi/L

Good news, but it's a 48-hour snapshot. Plan a long-term test or a free TDEC kit during your first winter.

Sellers: control the timeline

Test before listing

In a market where buyers routinely test, a pre-listing test puts you in charge. If it's high, you can collect quotes from certified mitigators, pick the cleanest pipe route, and hand buyers a post-mitigation result up front. The state's free kit is a cheap first look; a professional test carries more weight with buyers.

Already have a system?

Gather the paperwork: installer, install date, post-mitigation test, and warranty. Confirm the fan is running and the manometer shows suction.

Disclosure

Tennessee sellers of residential property generally provide a disclosure statement, and known material issues should be handled honestly. Ask your agent or a real estate attorney what applies to past radon tests or systems.

Who pays?

It's negotiated. Most often, when a buyer's test is high, the seller pays, either by installing a system or by offering a credit. For scale, Angi's 2026 national data puts typical active radon systems at about $805 to $1,326, with larger homes and crawl space membranes costing more. That's a national benchmark only; local professionals quote each house.

New construction purchases

Buying a new build in a Rutherford County subdivision? Ask whether radon-resistant features were installed and whether a test is included before closing. See radon-resistant new construction.

Getting a fix done before closing

1. Get the quote and schedule as soon as the result is in.
2. Install the system.
3. Wait at least 24 hours, then run a post-mitigation test.
4. Deliver the report before closing.

Buyers can ask for the post-mitigation test to be done by a certified tester who isn't the installer. It's a fair request.

How we help

Call or send the form with the property ZIP and your deadline. We'll connect you with an independent, certified radon professional who serves that part of Rutherford County. You work with them directly.

Murfreesboro housing and what it means for a sale test

The house type shapes both the test and any fix:

• Crawl space homes, very common across the county, are tested in a main-floor living area. A fix usually means a sealed membrane, which affects the size of a repair credit.
• Slab-on-grade homes in many newer subdivisions are generally simpler to mitigate, often with a suction point in the garage or a closet.
• Mixed foundations, such as a crawl space plus a slab garage or bonus room, may need a system that draws from both.
• Partial basements on sloped lots are tested in the basement if it's a lived-in level.

Using the free state kit in a sale

The Tennessee Radon Program's free kit request form lists "Real Estate Transaction" as a test type. A free kit can be useful for a seller who wants an early look before listing. Because it's mailed to a lab, the results take longer than a continuous monitor's. For decisions inside a short inspection period, most buyers rely on a professional monitor test.

Common questions from Murfreesboro buyers and sellers

Can the seller's earlier test be used?

Only if both sides agree. Many buyers prefer a fresh test from a certified professional they chose.

What if the house is vacant?

A vacant home can be easier to keep closed, but the HVAC should run normally during the test.

How soon after installation can we retest?

The post-mitigation test should start at least 24 hours after the fan is turned on.

Should a new-construction buyer test?

Yes. Ask the builder whether radon-resistant features were installed, then test after move-in or before closing if the contract allows.

Who should be present for setup?

Usually only the testing professional, who places the monitor and explains the rules to the occupants. The buyer's agent may coordinate access with the listing agent. Ask for the device's serial number and calibration date on the final report.

Where this information comes from

• EPA: Radon Resources for the Real Estate Community
• EPA: Radon Frequently Asked Questions
• EPA Map of Radon Zones, county data (Rutherford County, TN: Zone 1)
• Tennessee Department of Environment and Conservation: Tennessee Radon Program
• Tennessee Radon Program free test kit request (TDEC)
• Angi: How Much Does a Radon Mitigation System Cost? (2026 national data)