Deleting information about houses set on fire (6)
I believe the answer is:
ignite
'set on fire' is the definition.
(synonyms)
'deleting information about houses' is the wordplay.
'houses' indicates the answer is hidden within the clue (part of the clue houses the answer).
'about' is a reversal indicator.
'etingi' is hidden within 'deleting information'.
'etingi' reversed gives 'IGNITE'.
(Other definitions for ignite that I've seen before include "Touch off; inflame" , "Spark off" , "Kindle Fire" , "Put a match to" , "Set fire to, light up" .)