بسم الله الرحمن الرحيم
In the question mentioned above if you are already sahib-e-nisab and your year completes on 5 Ramadan then along with the zakah of nisab the amount which you received last month after selling the house and remained with you till 5 Ramadan you will have to pay its zakah as well.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.