I think maybe Smithers was on the sauce again - the quantity of posts in a few minutes is a good thermometer.
I don;t record drums, a room within a room keeps the family happy. In fact, so happy that my youngest, who now has a house of his own just told me that he and his friends used to be in my studio most nights playing music loud and hanging out. My wife and I never had a clue. It explains why things used to change - like guitars on the wrong wall hanger, or settings mysteriously changing on synths etc.
Seriously - a room within a room will make isolation much easier to acomplish. Loads of info on the subject all over the net, but in essence, very simple rules. Mass is master. one layer of sheetrock is rarely enough, but two or three works very well. Well within the capabilities of a good DIYer. My own pet system is sheetrock (plasterboard, here in the UK) and MDF on the inner surface, because it's structural, solid and easily drilled and painted. You can smash flightcases into it without damage and while more difficult to cut and support, a layer of sheetrock - maybe 12mm and one of MDF 18mm can be very good at preventing audio getting in and out. If the basement is large enough, also avoid 90 degree corners - they usually then need treating to prevent strange things happening with the room's bass response. Having the walls splay a little - it doesn;t have to be much, 5-10 degrees of extra turnout instead of 90, removes parallel facing walls, improves the room's sound and is only a little wasteful of space.