property dispute

Sir, my father(A) has three brother`s(B,C,D). Mr.A and B bought a plot in housing society plot no 1(area 361).they constructed bunglow on it. after that Mr A and B requested society to add extra member to Mr. C and D.Than plot no 2(area 160). attached to plot no 1 was purchase by transfer deed by Mr A B C and D.Mr. A and B left bunglow 10 years back. As per mutual understanding it was decieded to sell the bunglow whenever needed. But Mr. B,C,D are not ready to sell.My queries are 1right does my father has.(as per society member). 2.can he cancel names Mr. C and D.without consent of B. 3.should we sue for partiton deed or any other earliest way as per law.