Walk in closets should be a minimum of 4 feet wide by 4 feet deep.
One sided walk in closet.
A walk in of this size still has plenty of room for clothing.
Option 1 put shelving on only one side of this closet and the end as well which still gives the benefit of a walk in closet and only sacrifices about 3 of shelving wall.
With a double hung rack meaning two closet rods hung one on top of the other your clothing hanging space is doubled.
Option 2 rearrange the bathroom to reduce hallway space and open up more room for the closet.
The master has a very wide reach in closet that is 28 deep.
So 4 is too small and 5 is a bit inefficient.
There are also three drawers for additional accessories.
We are moving the opening to the room so we will have room to possibly if this is a workable idea make this a long walk in closet by bumping out the depth from 28 to about 48.
With these minimum dimensions the closet will accommodate shelves and hanging space on one side wall and the back wall.
Since the walk in also has depth closet rods can be hung on one wall and shelving on the other which is important to consider when choosing your walk in closet size.
On the left side of her walk in cabinet cubbies and shelves carve out room for sweaters and shoes.
We would walk in at the short end and clothes would hang on just one side.