Christopher Cimini was sentenced to one and a-half to 10 years in prison and ordered to pay $11,000 in restitution.
Investigators have said Cimini was drunk and likely thought he was somewhere else when he broke into, vandalized and set a fire in the downtown building Feb. 21.
The record label was home to Teddy Pendergrass, Patti LaBelle, Lou Rawls and the O'Jays. Owners Kenneth Gamble and Leon Huff, who helped popularize Philadelphia soul in the 1960s and '70s, lost much of their memorabilia in the fire.
Defense lawyer Gina Capuano said Tuesday that Cimini's blood-alcohol content was four times the legal limit for driving.
He had to be rescued from the building by firefighters.
In addition to the prison time, Cimini must undergo drug and alcohol treatment.