Share flat having staggered rooms (5,5)

I believe the answer is:

split level

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'staggered rooms' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'share flat' is the wordplay.
'share' becomes 'split' (I've seen this in another clue).
'flat' becomes 'level' (synonyms).
'split'+'level'='SPLIT-LEVEL'

'having' is the link.

Can you help me to learn more?

I've seen this clue in The Hindu.

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