Unexpected development starts for this wildly inappropriate suburban tower (5)
I believe the answer is:
twist
'unexpected development' is the definition.
(I've seen this in another clue)
'starts for this wildly inappropriate suburban tower' is the wordplay.
'starts for' suggests taking the first letters (I've seen 'start for' mean this).
The first letters of 'this wildly inappropriate suburban tower' is 'TWIST'.
(Other definitions for twist that I've seen before include "Twine together for a dance" , "Intertwine, contort" , "Rotate -- dance" , "Spiral" , "See 1" .)