The technician conducted a site survey of my home. He did identify several locations on the ground where the dish could be installed, however, there is one catch. Since the cable line coming into my home is used by Comcast, the only alternative would be to drill a hole on the side of the house and run the lines along the side of the house. He told me there was no way to discreetly hide the cable.
Since this was all about aesthetics initially, we have decided to keep the dish on the roof.
But, the installer that came out contradicted something that I was told earlier by a different technician. As mentioned above, the dish is located quite high on our roof. Today's installer told me that he can install it there and said that the other person probably didn't want to do that. So I guess there are different rules for different installers.