Yes, it is--at least to those of us who respect our neighbors and do not think we have the right to impair their enjoyment of peace and quiet within the four corners of their residences.

I mean, it's not all black and white though, right? I'd absolutely call police if my neighbours were throwing a party every evening for 6 months a year, but an occasional party that goes to 3am on a warm summer night? I'm probably not going to. It seems like HOA would pursue the second one with full force, even though there is such thing as common sense.