Originally Posted by Kai Winters

I built one of those bike hanger items that allow two bikes to be stored one above the other. They seemed a bit costly and not much too them so I used a picture of one from the Nashbar catalogue and made one out of 2x4's and some stain I had laying around. Probably cost me $15 bucks. I used a bit of felt I had laying about to cover the bottom and top and built it just tall enough to free stand against the wall kinda/sorta mildly wedged floor and ceiling.
It held my two bikes perfectly, took up very little room and was easily taken down without leaving a mark...we were living in an apartment with a cranky land lord.
Perhaps something like that would give the storage room you need while reducing the "bike footprint"...kinda/sorta like the carbon footprint?...in your home.