"I noticed this dark thing coming out of my wife's handbag, and thought, 'That's quite a large cat'... that's when our own cat Dotty legged it out of the house," Chapanionek told the BBC.
Chapanionek said the raccoon fled upstairs and started rooting through the drawers in his daughter's bedroom.
The man said he chased the raccoon through the house and was able to trap it in a hallway.
"But I had to wedge a chair under the door handle as it knew how to open them," he said.
"We thought about letting him out -- but we didn't know whether that was right or wrong," Chapanionek told the Northampton Chronicle & Echo. "We thought he must have been someone's pet because he seemed to know how to open doors."
The RSPCA took the raccoon to Stapeley Grange Wildlife Center in Cheshire. Officials said the raccoon, native to North America, was likely brought to Britain as a pet before escaping.
"[Raccoons] are wild animals and we would strongly discourage people from buying or keeping one as a pet," an RSPCA spokesperson said.
