From the perspective of Duke Zhou's interpretation of dreams, dreaming of falling from a building means that the dreamer may have physical discomfort or disease, and should pay attention to his own body.
Dreaming that someone else slipped and fell from the roof of the building indicates that the dreamer may encounter unexpected trouble, but it will soon pass;

Dreaming of a colleague falling from a building: Dreaming of a colleague falling from a building indicates that the dreamer may encounter unexpected trouble, but it will soon pass.

Dreaming of a friend falling from a building: Dreaming of a friend falling from a building means that the dreamer encounters major setbacks, is in trouble, and loses the support of his friend.