My dh and I live in a 3 bedroom house, 1 mbr to sleep, his room and my room. All my fabric is restricted to my room by my choice. My mom collects "things" and the clutter (although spotlessly clean) drives me crazy. Even when my sewing room gets out of sorts I start freaking. And I made a pact to not buy new fabric in 2010 unless I was given a gift card to a fabric store.
So far, 25 days into Jan and I've held true. So my answer to you:
one 10x10 bedroom's worth. :-D :-D :-D