My best response would be...Is you website delivering what the visitors expected? Example if they search "downtown condos" and come to your site but don’t see downtown condos they will leave.
Another possibility is that your site is loading slowly. If the site loads slowly it might have poor bounce rate. One item that would affect loading of the page is all the images on a page if there are lots of images could take a while for the page to load. If visitor has to wait they are unhappy and leave.
what about no "call to action" on the page they get to? if its just text and generic info, why stay? .. add a video, tell me about your service and what you offer and what I need to do to join.