I have a simple 1-bedroom house, and need some kind of a ball park on what it would cost to add a second floor master bedroom (bedroom, closet, and bathroom). I don't have any frame of reference. Would it be closer to 100K? or 500K? I know there are a lot of variables, and I will need to get an architect and contractor. But, before I do that, I was hoping to get some type of high level estimate. Have you added a second floor room and bathroom? How much did it cost you? Thanks!