Bobby's Study
Bobby's house is like a second home to the Winchesters. It is also the one location Sam and Dean always come back to. The house itself was first seen in Devil's Trap when Sam and Dean meet Bobby for help. Bobby's house is also considered in a way a safe house (when people are in danger, Sam and Dean suggest to bring them here).
Although, the house meets a terrible fate in "Hello, Cruel World" when Leviathan destroy it, leaving only the walls standing, covered in soot.
Since their victory in "Swan Song", it's grounds housed the stolen four Horsemen's rings, however Death's was returned to him, leaving the other three.
In "Sacrifice," Sam and Dean return to the house to make a deal with Crowley. While the ruins of the house aren't shown, the salvage yard is and seems to be slightly overgrown and completely abandoned. Bobby's car has also been abandoned here and left to rot.
Appearance
Bobby's house is located in a scrap yard that Bobby owns. The main rooms that appear on the show are the kitchen, Library, and closets. There is also staircases that lead up and down stairs. In the library it is filed with every kind of lore book, and rituals. Near the corner of the room is a fireplace, with a Devil's Trap on the roof. The room also has a desk for Bobby to work at. In the kitchen, it has basic kitchen stuff, plus a bunch of phones Bobby uses to pretend to be CIA, FBI, etc. The closets pimps it out to have a trap lever.
upstairs
Upstairs isn't seen very much. All there is known about the upstairs is that it holds the bedrooms and closets. Although Sam gets a hex box from the closet. Downstairs Bobby has a panic room.
Notes
- Other than the Impala, this one of the most seen locations Sam and Dean have been in.