Regardless of the construction of a house, whether it is small, large, with an attic or not, there will always be advantages and disadvantages. Therefore, in the case of duplexes, there are disadvantages, and some of them, Custom Home Builders Sydney says, is related to the lack of privacy or the feeling that you don't have enough privacy. The fact that only a wall separates you from the other house can create a sense of discomfort and the feeling that someone always knows what you are doing, at home or outside. That is true, especially if no wall in the yard precisely separates the two yards.