Part of Hampshire town's free to redevelop (3,6)
I believe the answer is:
new forest
'part of hampshire' is the definition.
(I've seen this before)
'town's free to redevelop' is the wordplay.
'to redevelop' indicates an anagram (I've seen 'redeveloped' mean this).
'towns'+'free'='townsfree'
'townsfree' with letters rearranged gives 'NEW FOREST'.
(Other definitions for new forest that I've seen before include "rural area" , "Wooded area of Hampshire" , "part of Hampshire" , "area of countryside?" , "Hampshire woodland" .)