Get coat altered in rural building (7)
I believe the answer is:
cottage
'rural building' is the definition.
'get coat altered' is the wordplay.
'altered' indicates an anagram.
'get'+'coat'='getcoat'
'getcoat' anagrammed gives 'COTTAGE'.
'in' is the link.
(Other definitions for cottage that I've seen before include "Small living space" , "Small home" , "To make a home" , "Small single-storey dwelling" , "Small one-storied house" .)