House style reportedly (5)
I believe the answer is:
manor
'house' is the definition.
(manor house is a kind of house)
'style reportedly' is the wordplay.
'style' becomes 'manner' (synonyms).
'reportedly' indicates a 'sounds like' (homophone) clue.
'manner' is a homophone of 'MANOR'.
(Other definitions for manor that I've seen before include "patch" , "police area" , "house on estate" , "Police district (slang)" , "Landed estate" .)