A stylish old house (5)

I believe the answer is:

tudor

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'old house' is the definition.
(historical royal house)

I can't explain the rest of the clue.

(Other definitions for tudor that I've seen before include "Relating to the English ruling family in the 1500s" , "Dynasty's founder" , "Owen's house" , "Name of a royal house" , "Royal family, fourteen eighty five to sixteen hundred and three" .)

I've seen this clue in the Evening Standard.

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