Is the geomantic house short of the east?

Newly bought multi-family high-rise residential buildings with one staircase often face south, with windows or external walls in the west and the wall next door in the east. It's just that there are no doors and windows in the east, not that there are no doors and windows in the east, which is not bad. It's just that the depth of the room will be greater and the lighting will be slightly worse. The problem is not big!