For closet organization, one of the best ideas to try and incorporate into your custom design is a closet hamper. These units seemlessly blend into your closets, due to the matching cabinet doors that front the hamper. These closet hampers come in a tilt out or pull out variations.
Here is picture of a hamper system we did recently.
As you can see this neatly hides away any laundry. One thing to consider is the amount of laundry and how frequently you get your clothes washed....Good thing that these hampers come in a variety of different size ;)