A new house featured in the writer's story (7)
I believe the answer is:
Here is my best explanation:
'story' is the definition.
(Walter Scott novel)
'a new house featured in the writer's' is the subsidiary indication.
'a new' becomes 'an' (I've seen this in other clues).
'house' becomes 'ho' (abbreviation for house).
'featured in' means one lot of letters goes inside another.
'the writer's' becomes 'ive' (the writer of the crossword).
'anho' inserted within 'ive' is 'ivanhoe'.
(Other definitions for ivanhoe that I've seen before include "romance", "On a hive (anag) -- hero of 19th century historical novel", "eponymous novel", "Eponymous hero of famous novel by Walter Scott", "Literary hero", "Book by Sir Walter Scott", "one Rowena loved", "Novel by Sir Walter Scott", "Walter Scott's eponymous hero" and "I have no collection for Walter Scott's famous novel".)