A building in a dream normally symbolizes changes that are currently take place in your life. They can be professional and about personal growth, they can be new things, which will benefit you in the near future.
The type of building you see matters.
An academic building is a signal to study something new;
An industrial building refers to productive weekdays;
A hairdresser’s or a beauty salon indicates chores in which you will take delight; and
A modern skyscraper signals happiness and well-being.