almost everything depends on the relationship you have with the other owners and BOD. You have some FCC protections for access to the airwaves, generally TV and satellite antennas. Yes an attic antenna can improve your access to the airwaves although less than ideal. If you have access to the attic, look for a PVC roof vent pipe, cut said pipe and add an inline "T" coupling, You could deploy a classic whip antenna in a push up out of the end of the pipe format. Like "Hogans Hero's" LOL Just make sure the water path is maintained or mitigated. there are many options.