Possibility-
Every one (Nanu team) are very concerned for the funds for the 'charitable hospitable project' But as we know everyone want to do this at any cost. Even at the cost of losing Deewan Mansion.
Yes, you read right! –At losing Nana's Mansion- Deewan Mansion!
So it begins like this-
A bank employee steps right out of the big, main door of Deewan Mansion and then right into his car. He had a blue file in his hands which he had received from the owner of Deewan Mansion- Mr. Purshottam Deewan. Then the car rolled passed the gate and out of the premises. The car was seen off by a very miserable and sad Mr. Deewan who had kept the beautiful mansion on mortgage!
Meanwhile, we have Adi realizing that he should not stick around in Deewan companies any more after being insulted, leaves his job and goes on to be a multimillionaire after 15yrs. But he is still unaware of the mansions mortgage. Infact the mansion's mortgage is only known to Mr. P Deewan and the bank.
After 5 years we have the bank employee coming to the mansion and sealing it. This is a shock to all the residents of DM even now. The residents begin to panic. But Nanaji is behaving very normally. Now, he has a plan or rather he had a plan which is of Adi coming back to buy the beautiful mansion! And that is exactly what happened- he came back and bought the mansion where now lives Harish, Avantika, Preethi, Sheila, Anuj, Adi, Pankhu and Kaira.