Henry's house style? (5)
I believe the answer is:
tudor
I believe this clue is a double definition.
'henry's house' is the first definition.
(the House of Tudor was founded by Henry VII)
'style?' is the second definition.
(I've seen this before)
(Other definitions for tudor that I've seen before include "Royal house of Henry VIII" , "Rose" , "Name of the English royal family of Elizabeth 1st" , "Of English C16" , "English royal dynasty" .)