I suppose it depends on what style of masterboard you have. If it seperates into indivual tiles, then I'd just keep them stacked in a box. If the masterboard is all one piece (tiles glued down on foamcore), then I'd keep them in a closet or behind some furniture.

In general, I find it harder to make room for the parts that go on the masterboard than for the masterboard itself.

My first Masterboard (for DungeonWorks Classic) went behind a door and warped in short order.

That's why I'm so jazzed about the far smaller, far easier to store PaperLinX style. It fits into my storage solution very easily (super high-tech Sketchers shoe boxes, for now. Later, I'll get the rolling cart everyone oogles after).

Heh, if you have a suspended ceiling then you can store the masterboards above it. The person who introduced me to World Works after I introduced him to World Works keeps his entire set in the space between the suspended ceiling and the real one.

The Auld Grump

gives some information about being eight feet in American homes, by other I Nine foot ceilings (as well as other heights) exist but are not standard. Older homes may have taller ceilings.