Surrey town -- agree it needs redevelopment (7)
I believe the answer is:
reigate
'surrey town' is the definition.
(I've seen this before)
'agree it needs redevelopment' is the wordplay.
'needs redevelopment' indicates an anagram (I've seen this in other clues).
'agree'+'it'='agreeit'
'agreeit' with letters rearranged gives 'REIGATE'.
(Other definitions for reigate that I've seen before include "place in Surrey" , "Surrey town" , "English town" .)