Scrap lavish redevelopment to some extent (5)
I believe the answer is:
shred
'scrap' is the definition.
(both can mean a small amount of material)
'lavish redevelopment to some extent' is the wordplay.
'to some extent' says the answer is hidden in the clue.
'SHRED' is hidden in the letters of 'lavish redevelopment'.
(Other definitions for shred that I've seen before include "Strip of material; a very small amount" , "Torn piece of material" , "(Tear into) small piece(s)" , "Scrap; finely tear" , "Tatter; small amount" .)