Here is the full list of all 14 Tiny House achievements.
Room 14 completed
Room 13 completed
Room 12 completed
Room 11 completed
Room 10 completed
Room 9 completed
Room 8 completed
Room 7 completed
Room 6 completed
Room 5 completed
Room 4 completed
Room 3 completed
Room 2 completed
Room 1 completed