CONCORD, N.H. — Federal officials are preparing to sell the New Hampshire compound of a tax-evading couple convicted of amassing an arsenal of weapons, but can’t guarantee that explosives aren’t hidden on the 103-acre spread.
In fact, they will openly warn bidders that land mines might be planted throughout Ed and Elaine Brown’s bucolic property in the small town of Plainfield. And they say prospective buyers won’t be allowed on the grounds until they submit a winning bid that frees the government of liability for dismemberment or death.
‘‘It’s going to be a very interesting sale,’’ said Chief US Deputy Marshal Brenda Mikelson, who is in charge of the auction.
The Browns, who do not recognize the federal government’s authority to tax its citizens, were in a nine-month standoff with authorities in 2007 after they were sentenced to five years in prison for tax evasion.
US marshals posing as supporters arrested them peacefully.
They were convicted in 2009 of amassing weapons, explosives, and booby traps, and of plotting to kill federal agents who came to arrest them.
Ed and Elaine Brown, now in their 70s, are serving sentences of 37 and 35 years, respectively.
Mikelson said she has contacted numerous federal agencies that have explosive detection equipment and dogs, and none could ensure a clean sweep of the property, which includes acres of storm-damaged trees and other natural debris.
‘‘With the size of the property, there’s no way to search it and have any guarantees,’’ Mikelson said.
However, the hilltop house and the grounds up to the tree line have been searched extensively and are deemed free of improvised explosive devices and other booby traps, Mikelson said.
Federal marshals say they are still hammering out the language of the disclaimer and the auction won’t take place before September.
Also being auctioned is Elaine Brown’s dental office in West Lebanon in the heart of the retail hub of New Hampshire’s Upper Valley region.
By federal court order, the properties must be sold as is. Minimum bid for the Plainfield compound is $250,000, while the Lebanon office must sell for at least $507,500.
The court has ruled that the Browns and any heirs have no claims to the properties or any assets from their sale.
While the Browns kept federal marshals at bay, they welcomed a parade of antitax and antigovernment supporters including Randy Weaver, whose wife and son were killed along with a deputy US marshal in a 1992 shootout on Weaver’s property in Ruby Ridge, Idaho.
If the properties sell, the first entities to be paid would be the municipalities of Plainfield and Lebanon, which are owed property taxes.
Lawyer Shawn Tanguay, who represents Lebanon, said that the city as of mid-July was owed roughly $211,500 in taxes, interest, and penalties. Plainfield tax collector Michelle Marsh said the town is owed $152,550 on the Browns’ property there.