@Rita. Mr. Kalaiselvan is a very good advocate unlike some advocates in this forum who sometimes write total nonsense. I say this based upon his opinions in this forum. Usually Adv. Kalaiselvan's opinions are on point and correct. But, I respectfully disagree on a couple of points here.
"Though you will not be entitled since you are employed," I disagree. It is not whether you are employed or unemployed that is important. It is the total income that you get and if it is sufficient to sustain a life style that you were accustomed to when you were living with your husband OR the one that he is having now after separation. This in turn has to be analyzed mathematically. Your interest or dividend income from investments, rents from properties, salary from employment all adds up and then the determination is made on whether you qualify or not. That is why there is trial. Husband tries to show all sources of income for the wife and wife tries to bring evidence of husband's earnings. Finally after all evidence is presented, the Judge gets a clear picture of the finances of both sides and decides if maintenance has to be provided and if so, how much. The law is not that simple. What if a woman can maintain herself but chooses to remain unemployed? That is where good advocates play an important role to argue in their client's favor based upon the facts of the case.
Regarding the flat/house. You are at least the co-owner of the house if not the owner. You did not say whether title is shared or exclusive to you. Irrespective of that, this will cover Right to Residence. Your monthly payment will have to be shown by you as your expense so that it works in your favor. Try to negotiate something so that you get the title transferred exclusively to your name, if it already is not.
Finally... remember. As Adv. Kalaiselvan said, you need to make applications and present facts yourself. The law is clear. Judges cannot grant any relief that is not prayed for in a petition or application. So you need to file applications and petitions and your prayer paragraphs must expressly seek the relief you want. You must allege all fact and file affidavits and evidence in support. If Judge grants anything that is not in the prayer clause, it can be easily overturned on appeal on procedural basis alone.