Islamic inheritance rules for father’s assets?

My father Janab Abdul Ghaffar Saheb expired on 12/02/1989. He has built his own bungalow with his earnings in Udaipur (Rajasthan) at 80, Panchwati. We are three siblings eg one brother Khalid Mehmood aged 67 years, one Sister Mrs. Najma Munir aged 58 years and myself aged 55years. Before our marriage we were living in this bungalow. Further to let you know that after the death of my father Janab Ghaffar sahib, my brother did not bother to inform us that what are left behind, including this bungalow. We are still unaware that what was his savings in the banks or else, the copper and silver utensils/articles etc. My brother did not bother to inform us the details and not even consulted us for the distribution of the entire things including the bungalow which he is using since years. Now it has come to our notice that he is interested in selling the precious bungalow and elope somewhere without giving a single penny to both of us (his sisters). Now in the light of Shariah please let us know what is the actual law. For your information the details of our family are as under, so that we could ask my brother to take actions according to law of Shariah. Mr Khalid Mehmood has two sons naming Taaha 37years and Faraz 35 years (both are unmarried). Mrs Najma Munir has one son and two daughters. Naming Miss Nilofar-age-35 years, Mr Fahim-33years and Miss Sana 27years. (all three are unmarried). Mrs Huma (myself) no issues but Sana is living with us since her childhood.