Work round it, going to a back courtyard (5)
I believe the answer is:
patio
'courtyard' is the definition.
(I've seen this before)
'work round it going to a back' is the wordplay.
'work' becomes 'op' (abbreviation for opus**).
'round' is an insertion indicator.
'going to' is a charade indicator (letters next to each other).
'back' shows that the letters should be reversed in order.
'it'+'a'='ita'
'op' placed around 'ita' is 'oitap'.
'oitap' reversed gives 'PATIO'.
(Other definitions for patio that I've seen before include "Place to sit" , "Spanish court" , "Spanish courtyard" , "yard" , "Paved area outside house" .)