Tracy Uhle lives two houses down from Kapheim's home in the 2900 block of West 47th Street. She said she has occasionally spoken to Kapheim, the most recent time being this past summer.
Uhle described Kapheim as being different.
"He was just really odd" Uhle said. "He just acted really strange."
Uhle added that Kapheim never seemed threatening, and she was shocked when she heard that he had been arrested.
Kapheim's home was listed for sale by Ruhl & Ruhl Realtors.
"He was talking about a transgender operation," Uhle said. "That's why he was trying to sell his house so he could get money for that."
Uhle said Kapheim's home had been on the market for a couple of months, but she believed he was renting the home to a man and woman.
The home had previously been owned by Nancy Kapheim, who was R.J.'s mother. Nancy died in 2002.
According to Heim L.L.C.'s Facebook page, a family-owned business that specializes in handle systems for industrial vacuuming, R.J. Kapheim was a product designer for the company.
According to the Iowa Secretary of State's website, the registered agent for Heim L.L.C. is Henry Kapheim, R.J.'s dad.
Kapheim was expected to make his first appearance in court on Thursday, November 20, 2014.