Can I rent out my attic?

[Kevin Hassold]

I am currently looking at a 2-story duplex with a large attic space. Each floor is a 2/2 unit. I want to convert the attic into 1 possibly 2 more rooms to make the top unit a 4/2. It is my understanding that as long as the bedrooms have a window and a closet they are considered a bedroom. Is that all I need in order to include these bedrooms with the 2nd floor unit or is there more to it? Does anyone have experience with renting out an attic?