Row upset caterer (7)
I believe the answer is:
terrace
'row' is the definition.
(I know that terrace is a type of terrace)
'upset caterer' is the wordplay.
'upset' indicates anagramming the letters.
'caterer' with letters rearranged gives 'TERRACE'.
(Other definitions for terrace that I've seen before include "Balcony" , "Row of uniform houses" , "Continuous row of houses" , "Stadium standing area" , "Patio" .)