Nebraska requires every home seller to fill out a written disclosure statement before closing. Most buyers assume that means the seller had the house tested for radon. It doesn't. The Nebraska Real Estate Commission's disclosure form only asks sellers to report what they already know, and if they've never tested, the honest answer is "do not know." No test, no violation, no problem under the statute.
That gap between what the law requires and what a buyer actually needs to know is where a lot of Lincoln transactions quietly get decided, and it matters more here than in most places a buyer might be comparing Lincoln against.
The Form Protects What Sellers Already Know, Not What's True
Nebraska has required a written property condition disclosure since 1994, codified at Neb. Rev. Stat. §76-2,120. The statute is specific about what the form is and isn't. It's a snapshot of the seller's personal knowledge on the date it's signed, not a warranty, and not a substitute for an inspection the buyer might want on their own. A seller who genuinely never tested for radon checks "do not know" and moves on. A seller who tested and got a bad number has to disclose it, and if they knowingly withhold it, the buyer has a year from taking possession to sue for actual damages and attorney's fees, which the statute makes mandatory rather than discretionary.
That last part gives sellers a real incentive to be honest about what they know. It does nothing to encourage them to find out something they don't. The law also sets no fixed inspection window. In most Nebraska purchase contracts, the timeline for a buyer's own inspections, including radon, gets negotiated deal by deal rather than handed down by statute. A buyer who assumes there's a standard grace period to test is working from a habit borrowed from some other state's contract, not Nebraska's.
Why the Gap Matters More Here Than Almost Anywhere Else
Radon is a naturally occurring gas that seeps up through soil and collects in basements and lower floors, and its concentration has almost nothing to do with a home's price point or curb appeal. It has everything to do with geology. Nebraska sits on ground that puts it in the EPA's highest radon potential zone, and according to the state's own Department of Health and Human Services, the results of more than half of radon tests conducted in Nebraska come back above the EPA's action level of 4.0 pCi/L. That's not a marginal statistic. It means a coin flip on any given untested Lincoln house lands on "should probably be mitigated."
Most other states don't carry that baseline risk, which is why radon barely registers in general homebuying guides written for a national audience. In Lincoln, it's closer to a structural question than an environmental footnote.
The House's Age Is Doing Work the Disclosure Form Can't
Nebraska's Radon Resistant New Construction Act took effect on September 1, 2019, requiring passive radon control systems, sealed foundation penetrations and a vent stack roughed in during framing, in new residential construction across most of the state. That means any home permitted after that date already has the plumbing for a mitigation system built in, even if the fan that activates it was never installed. Retrofitting an existing system is a matter of adding a fan, not cutting new holes in a foundation.
Homes built before that date have none of it, and Lincoln's older core neighborhoods are full of exactly that housing stock. Near South, just south of downtown, is known for early 1900s Craftsman bungalows and American Foursquares built on lots a fraction of an acre, the kind of construction where a basement was standard and radon control wasn't a concept yet. Everett, one of the city's oldest neighborhoods, dates to the same era. Hartley, one of Lincoln's earliest suburbs, holds homes built between 1890 and 1940. Havelock, founded in 1890 along the old Burlington and Missouri River Railroad, still has its share of Craftsman and Bungalow-era houses near Havelock Avenue's shops and restaurants.
None of that means those homes have elevated radon. It means nobody built any control into them, and testing is the only way to find out.
| Where | Typical building era | Radon control built in | What it means for a buyer |
|---|---|---|---|
| Near South, Everett, Hartley, Havelock | 1890s to 1940s | None, predates any state requirement | Test before writing an offer contingency, don't assume |
| Newer growth areas like Fallbrook and Far Southeast | Mostly post-2000s, permit dates vary | Depends entirely on permit date, not neighborhood name | Ask when the home was permitted, not just built |
| Anything permitted after September 1, 2019, anywhere in the city | Current construction | Passive system roughed in under the RRNC Act | Mitigation, if ever needed, is a fan upgrade, not new foundation work |
The middle row matters because "newer neighborhood" and "built after 2019" aren't the same claim. Fallbrook and Lincoln's Far Southeast have both grown fast over the last two decades, but a house permitted in 2011 in either area predates the Act just as surely as a Havelock bungalow does. The permit date on record with the city tells the real story, not the neighborhood's reputation for being new.
What Actually Happens When a Test Comes Back High
A radon test during a Lincoln transaction typically runs a short-term reading over 48 hours, and if the number comes back at or above 4.0 pCi/L, the standard next step is a sub-slab depressurization system, a fan-driven setup that draws gas from beneath the foundation and vents it above the roofline. Installation for a typical single-family home runs somewhere in the range of $800 to $2,500 depending on foundation type and how many suction points the technician needs. Most systems go in within a single day, and confirming the fix worked takes another two to seven days of retesting.
None of that is expensive or slow by construction standards. What it does is create a real decision point mid-contract. Does the seller pay for the system and get it verified before closing, does the buyer take a credit and handle it after they own the house, or does the price adjust instead. Nebraska's disclosure statute doesn't answer that question. The purchase contract does, and only if someone thought to test early enough to negotiate rather than discover the number the week before closing.
The Current Market Changes Who Has the Room to Ask
Lincoln's market has stayed tight through the summer. Over the three months ending in August 2026, homes sold for a median price of roughly $317,000, up 5.6 percent from the same period a year earlier, and the average home went from listing to sale in 21 days, a few days faster than typical. Listings themselves have been priced more ambitiously. As of September 2026, homes newly on the market were asking a median of roughly $379,000, well above what similar homes were actually closing at over the summer, a gap that suggests sellers are testing the market's ceiling more than buyers are meeting it.
That combination matters for how a radon conversation actually goes. In a market moving this fast, a buyer who waits until after an accepted offer to even think about testing has less room to negotiate a system or a credit than one who builds the inspection window and a radon contingency into the offer itself. Sellers with multiple offers on the table have less incentive to volunteer a fix nobody asked for in writing.
Frequently Asked Questions
Does Nebraska require a radon test before a home can be sold? No. The law requires the seller's disclosure statement to report known information, including any past radon tests, but it doesn't require testing to occur in the first place.
What if my test comes back between 2 and 4 pCi/L? That range sits below the EPA's action level but isn't zero risk. Buyers and sellers negotiate what, if anything, happens at that number, since the statute doesn't set a threshold for required action, only for what must be disclosed if known.
Do new-construction homes in Lincoln still need radon testing? Homes permitted after September 1, 2019 are required to have passive radon control systems built in under the state's Radon Resistant New Construction Act, but a passive system without an active fan can still test high. Testing after move-in is still the only way to confirm actual levels.
Whether you're weighing an older bungalow in Near South against a newer build farther out, the permit date and the test result matter more than the neighborhood's age or reputation. Avid Realty can walk through what a specific Lincoln property's disclosure history and construction timeline actually mean before you write an offer. Schedule a consultation to talk through it before you're negotiating against a clock.
