Richard Pfaender has undergone a psychological evaluation at the jail and has been cleared to make his first court appearance at 1:30pm on Thursday.
Investigators said he allegedly staked out the apartment on Orange Blossom Trail and 39th Street (see map) for hours, before making his move.
The gates of the small group of apartments are locked, after the bizarre incident landed 57-year-old Pfaender behind bars.
Deputies said Pfaender followed him home from school.
"He was very terrified over it and it just goes to show that no matter how old your child might be, they're still not safe at home," said the boy's father, Jim Fox.
The boy told investigators the man had talked to Pfaender at a restaurant earlier in the day, as the teen walked home from school.
"Apparently, within the course of the day, the victim had actually seen the suspect, engaged him in a small conversation and separated himself from him," said Lt. Carlos Torres of the Orange County Sheriff's Office.
Investigators believe he then followed the boy home and waited hours for his father to leave. When Phaender entered the apartment, the boy locked himself in a bathroom and called his father, who went back to the apartment to find the intruder naked inside.
"I do not know the guy. I've never seen the guy and it's pretty scary when you come home and see a man in your living room totally naked with no clothes on, trying to have his way with your child," Fox said.
Deputies said Phaender was intoxicated when the incident happened.
Pfaender was cuffed in just his underwear and taken to the Orange County jail on charges of burglary, attempted sexual battery and lewd exhibition.
WFTV found out Pfaender has had issues with alcohol in the past. He's been arrested before on a number of DUIs and spent about four months in prison on those charges.