See attached PDF showing a floor plan for the storage/workshop room and for the conversion of that storage/workshop room to a future bedroom.
The addition was drawn attached to the existing house for two reasons. 1) You can use the existing wall and between the addition and the house and 2) when the room is converted in the future there will be direct access to the house. The bathroom is placed so that it works in the storage/workroom setup and then also in the bedroom setup. This will make it so you don't have to move or rebuild the restroom when you convert the workroom to a bedroom.
A new porch is proposed on the side of the house with direct access from the kitchen for outdoor dining or from the living room for evening outdoor seating.
Leave your comment below.