Mixed artwork 'a bit of fluff' removed from Romeo's house (7)

I believe the answer is:

montage

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'house' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for montage that I've seen before include "set of images" , "Artwork - not a gem (anag)" , "Collage" , "Picture created from a number of images" , "Composite picture" .)

I've seen this clue in The Daily Express.

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