Broad area no longer needing shelter (6)
I believe the answer is:
extent
'broad area' is the definition.
(extent can mean an area or range)
'no longer needing shelter' is the wordplay.
'no longer' becomes 'ex' (prefix meaning former or onetime).
'needing' says to put letters next to each other.
'shelter' becomes 'tent' (canvas shelter).
'ex'+'tent'='EXTENT'
(Other definitions for extent that I've seen before include "The size or scale of something" , "Area something covers" , "Length" , "Magnitude - scope" , "stretch" .)