I have a very small 8 x 8 sewing room. I must keep things down to a reasonable size and quantity. I also use one of those pattern boxes for the patterns that come in those little plastic bags. You can fit alot of them in one box. I have one large 3 ring binder for those from magazines, etc. I go though each periodically and cull to make room for new ones.
We moved a little over a year cross country and I want to keep my whole house clutter free. It was alot of work to purge stuff before the move. My guild has a once a year year sale so I have a great place to donate purchased patterns.