Most Salem buyers see the radon checkbox on their inspection addendum and treat it the way they treat the termite line: a small add-on, a few hundred dollars, something the inspector handles while they're already in the house. Most Salem sellers see the same word on their disclosure packet and assume the "as-is" language a few paragraphs up has already answered it.
Both readings miss what actually happens in a Salem transaction. The City of Salem is one of a small handful of Virginia jurisdictions where three things line up at once: an EPA Zone 1 designation, a local building code that quietly acknowledges the risk, and a state disclosure statute that pushes the entire question onto the buyer's contingency clock. The radon step isn't a footnote here. It's the inspection item where the paperwork, the geology, and the local code all point at the same fourteen-day window.
The Line on the Disclosure Form That Reshapes the Math
Virginia is a caveat emptor state, and the form the seller signs makes that posture explicit. The current DPOR disclosure form, effective July 1, 2025, contains eighteen items on which the owner "makes no representations." The condition of the property, the presence of lead, the location within a flood zone, the composition of the plumbing, the noise from a nearby airfield — all of it is expressly the buyer's problem to investigate.
Radon is not one of the eighteen enumerated items. It doesn't need to be. The form puts the buyer on notice that the seller is making no representations about an extensive list of property issues and advises the buyer to investigate each one before closing, and the Virginia Supreme Court has held that buyers are expected to exercise the prudence "properly to be expected from, and ordinarily exercised by, a reasonable and prudent man under the particular circumstances."
For a Salem home, "the particular circumstances" include geology.
Why Salem Specifically, Not Just "Virginia"
Radon risk is not evenly distributed across the Commonwealth. Virginia has 46 counties and 15 cities that are classified as Zone 1 (high risk), and 24 counties and 8 cities classified as Zone 2 (moderate risk). The City of Salem is one of those 15 Zone 1 cities. That designation is based on indoor radon measurements, geology, aerial radioactivity, soil parameters, and foundation types, and in Salem's case it reflects the same Blue Ridge geology that makes the surroundings so photogenic.
Salem has also done something most Virginia jurisdictions have not: it has adopted the radon appendix to its residential building code. Virginia law lets counties and cities designated as high risk adopt Appendix F of the International Residential Code, which requires the use of Radon Resistant New Construction techniques in most new single-family dwellings. The independent cities of Blacksburg, Buena Vista, Christiansburg, Lexington, Radford, Roanoke, and Salem are on the short list that has done so.
That sounds like a resolved problem. It isn't, and the reason it isn't is the exact reason the disclosure form matters.
What the Ordinance Covers, and What Your 1978 Ranch Isn't
The RRNC ordinance is forward-looking. It shapes what builders install in new foundations going forward. It does nothing for the majority of Salem's housing stock, which was built long before Appendix F existed. A short list of what the ordinance does not do for a resale:
- It does not require a radon test at the time of sale.
- It does not require a seller of an older home to install a mitigation system.
- It does not cover homes built over ventilated crawl spaces, which are common in the Roanoke Valley's older neighborhoods.
- It does not guarantee that a passive system in a newer home is actually working. When a passive RRNC system is properly installed, it is thought to reduce the indoor radon level by an average of 50%, and the home should still be tested after move-in; if the level is 4.0 pCi/L or higher, a certified mitigator should convert the passive system to active by installing a fan.
The city's code, in other words, tells you that Salem sits in a geology worth designing around. It does not tell you what the specific house you are about to buy will test at on a Tuesday in February.
That answer only comes from a test, and the window for ordering it is the inspection contingency.
The Inspection Window Is the Whole Ballgame
A standard radon test in the Roanoke Valley is a two-to-four-day closed-house measurement placed on the lowest livable level. That last detail matters more in Salem than it does in a slab-on-grade market. The lowest livable level of the structure should always be tested because that is where the highest radon levels in the structure are typically found. A finished basement rec room, a walkout lower level with a guest suite, a converted daylight basement office — each of these becomes the test location, and each is a housing feature Salem's older neighborhoods are full of.
Every established local inspection firm in the valley offers radon as a standard add-on. Kevin Meyers at KSM Inspections lists radon testing alongside a base home inspection that starts at $350. Calvert Home Inspection in Salem lists radon in its core menu of professional home inspection, radon testing, sewer scope, and mold services in the Roanoke Valley. Detail View Home Inspections in Salem offers the same across Roanoke, Bedford, Botetourt, and Franklin counties. Valley Home Inspections, which has been serving the Roanoke region since 1994, and Howson Home Inspections in Roanoke round out the short list a buyer's agent typically works from.
The Virginia Department of Health has also made the do-it-yourself version cheap on purpose. VDH is offering a limited supply of short-term, do-it-yourself radon test kits for only a $4 shipping fee, available until the supply runs out. That kit is fine for a homeowner curious about their own house. It is not the tool for a live transaction, where a signed, dated report from a licensed measurement professional is what belongs in the file.
Order the test on day one of the inspection period, not day seven. A four-day closed-house sample plus lab turnaround is tight against a fourteen-day contingency. If the number comes back at or above the EPA threshold, you want the days left to do something about it.
If the Number Comes Back at 4 pCi/L or Higher
The action level is not a matter of opinion. EPA guidance is to fix the home if the radon level is 4 picocuries per liter or higher, and to consider fixing if the level is between 2 and 4 pCi/L. On the seller side, a Salem home with a mitigation system already installed and a recent post-mitigation test in the low ones is a stronger listing than one that has never been tested at all. On the buyer side, an elevated reading is not a deal-killer. It is a negotiation point with a known, bounded fix.
Active mitigation systems in the Roanoke Valley are a mature product with a defined scope of work: a suction pipe through the slab or crawlspace membrane, an inline fan, a manometer, and a vent to above the roofline. It is the kind of repair the market has priced many times over. What matters in the contract is that the ask is specific, the vendor is qualified, and the post-mitigation retest is written into the addendum.
The reason to internalize any of this is stakes. Indoor radon is thought to be the second leading cause of lung cancer and the leading cause among people who have never smoked, and exposure may contribute to almost 700 cases of lung cancer each year in Virginia. That is the health frame. The transaction frame is that in Salem, a Zone 1 city with an older housing stock and a caveat-emptor disclosure regime, the radon step is the single inspection item where the geology and the paperwork meet.
FAQ
Does the seller have to disclose a prior high radon test? Virginia's disclosure form is built around the "makes no representations" posture on the enumerated items. Radon is not on that list, but active concealment or a direct false answer to a written buyer question is a different matter under Virginia case law. The safer read for sellers is to answer written questions honestly and let the buyer test.
Does a passive pipe I can see in the basement mean the house is protected? Not on its own. A passive RRNC stack reduces radon on average, not always to below action level. The only way to know a specific house's current reading is to test the specific house.
Can I test after closing instead? You can, and every homeowner in a Zone 1 city should test periodically regardless. The distinction is leverage. Inside the inspection contingency, an elevated result is negotiable. After closing, mitigation is simply your line item.
If you are heading into a Salem purchase or preparing a Salem home for market and want the radon step handled with the timing and vendor sequencing it deserves, Virginia Realty Group is glad to walk the contingency calendar with you before the clock starts. Contact Kendra.
