Houses
From My Little Pony Magic Princess Wiki
Houses are the buildings characters live in. A character's house must be built before that character can be welcomed, but in cases where multiple characters live in the same house, the house only needs to be built for the first character; subsequent characters can be welcomed immediately.
Houses do not appear in the store and do not cost anything by themselves to build, though skipping the build timer, as with skipping all timers, costs 
. Once built, houses cannot be sold or returned to the player's inventory, but can be moved around the map.
