To build is to create something new piece by piece such as building a career or relationship or even to build your self image or reputation. A building symbolizes something in your life you have already built. What is the building like? Is it huge and towering? This indicates success. Is it under construction? It is something that is not yet finished. Is it falling apart or abandoned? It then symbolizes something in your life that you have been neglecting and needs more attention… or perhaps needs to be demolished.