Purchase Agreement for a Loft

I sucked it up and signed a Purchase Agreement for a loft in Downtown Detroit. It's amazing how I spent months looking at houses in the suburbs and decided to buy a property that is not even built yet. I made my purchase based on floor plan blue print. I just had a terrible feeling that is all just a ruse and the shell where my loft is to be built is, and shall remain, a shell for years to come. If I do get robbed and this place never is built I think I am going to just squat in the building until they tear it down. Did I just impulse buy a loft?