An old house or its style (5)
I believe the answer is:
tudor
I believe this is a double definition.
'an old house' is the first definition.
(historical royal house)
'style' is the second definition.
(I've seen this before)
'or its' is the link.
(Other definitions for tudor that I've seen before include "A royal house of England" , "Rose" , "English royal dynasty" , "Half-timbered-house style" , "Owen's house" .)