justanotheridijiton:

Sam’s Bedroom: According to [Art Director John] Marcynuk, “Sam’s room and Dean’s room is the same set. We just redress it.” Dean’s bedroom has appeared a few times and they built it on the soundstage, but it wasn’t connected to the main bunker set in any way. “We then, just because of schedule, we had to pick it up and take it to a warehouse for ‘Remember the Titans’. Then we moved it back and connected it to the set [via a corridor].”

Source: SUPERNATURAL Set Tour: Behind the Scenes of the Men Of Letters Bunker (3 November 2015)