Engineers suitable for renovation (5)
I believe the answer is:
refit
'renovation' is the definition.
'engineers suitable' is the wordplay.
'engineers' becomes 're' (Royal Engineers).
'suitable' becomes 'fit' (similar in meaning).
're'+'fit'='REFIT'
'for' acts as a link.
(Other definitions for refit that I've seen before include "Updating or repair process for a ship" , "dockyard job" , "Replace or repair equipment as part of a general overhaul" , "Overhaul (ship's equipment)" , "Repair - renew" .)