Storage area (5)
I believe the answer is:
attic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">storage area</span>' is the definition.<br/ ><span class="explanation-format__explanation">(an attic may be used as storage space)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for attic that I've seen before include "room with lots of junk?" , "Area at the top of the house" , "Upstairs room" , "Greek - upper room" , "Upper chamber" .)