The TV Fool Report may or may not be accurate (it carries the warning that it is resolved only to the block level). I recommend that you prepare another report using these directions:
http://forum.tvfool.com/showthread.php?t=14508 - it is possible it will not change, but it might. [I'd actually post two, one 5 feet above roof like and another 10 feet above that.]
If your actual report is similar to the one you posted, I agree with Tim. You'd need to mount your antenna outside. Hopefully you have spot where it can get general LOS to the horizon at about 350 degrees on a compass (slightly west of north). Once you post another report you will get specific recommendations.
If you live in the United States your HOA cannot prevent you from putting up an outdoor antenna.