He built an apartment over his father’s house with his own money; do the heirs have any right to it?

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Check below answers in case you are looking for other related questions:
You have to return the money to its owners
How should they share out the rent of a house that they inherited together?

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Related Answers:
His grandfather left a bequest to his heirs who are poor; is it permissible for him to take from that bequest?
She left instructions to deprive her oldest son of his inheritance because she had helped him to get married with her money
She died and left behind a brother and two sisters
You have to return the money to its owners
How should they share out the rent of a house that they inherited together?

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