Note “booster” has a connotation of “restoring strength”.. unsuitable. “Enhancer” is better.

— when to make preparations for carve-out, such as ceiling work?
By default, it would take place before I leave for the U.S.

— Idea: reverse the main gate so that the smaller piece is near kitchen. The “tiny room” can extend all the way to the line between the two pieces of the gate.

Also, the same room can expand into the walkway leading to the kitchen. It’s currently 1.2m wide. Can narrow down to 1m.

Together, these can increase the room size by 20%.

— For #1173 as in 43R 2nd floor, I need to install a partially translucent partition to carve out a private room by the window. The remaining living room will still receive some natural lighting.

The carve-out can become bigger (higher rent) if it expand into the living room. Living room would merge with store room

Service balcony can become a storeroom