Steven Powell is scheduled to be released from prison next month and will move back to Pierce County, the state Department of Corrections announced Thursday.
Powell, father-in-law to missing mother Susan Cox Powell and father to killer Josh Powell, was convicted of voyeurism in 2012 and sentenced to 30 months in prison.
With credit for time served awaiting trial and good behavior in prison, he is scheduled to get out Nov. 4.
Powell will be a tenant of a privately owned home in Tacoma and required to wear a GPS device for the first 30 days of his release, Corrections officials said in a news release.
He also will be heavily supervised by a community corrections office, the department said.
Powell was convicted of 14 counts of voyeurism for photographing his next-door neighbor girls, then 10 and 8, while they used the toilet or bathed.
The two girls found out about the photos and videos in 2011 after authorities served a search warrant at Powell's Puyallup-area home.
Pierce County and Utah detectives were looking for clues in Susan Powell's disappearance when they found a compact disc in Steven Powell's bedroom that contained all kinds of inappropriate images, including those of the neighbor girls.
Puyallup native Susan Powell went missing in 2009 from her home in Utah. Her husband, Josh, considered a person of interest in her disappearance and likely murder, killed himself and the couple's two sons in Pierce County in February 2012.