Attics converted to stable! (6)
I believe the answer is:
static
'stable' is the definition.
(thesaurus)
'attics converted' is the wordplay.
'converted' indicates anagramming the letters.
'attics' anagrammed gives 'STATIC'.
'to' is the link.
(Other definitions for static that I've seen before include "Atmospheric disturbance" , "Inactive or inert" , "Stuck in a traffic jam" , "Inert or passive, like some electricity" , "Not in physical motion" .)