Dear Jaya, we'll wait for the images from Agnes of your intentions. My previous concern is that by dividing what is already a small courtyard yet with another wall, why not just forget about seeing this space as a courtyard but as 2 separate planted or landscaped light wells each dedicated as an exterior extension of the adjacent enclosed spaces? No one needs to know that they originated as a single courtyard. This also resolves privacy issues like lighting. I always know when someone is in the bath at night from opposite the wall and courtyard. Thanks. Richard