grand father distribute home

Respected Sir,
my grandfather distributes home in between 5 sons 7marla’s equally remember that property area shamlat (okaf) we settled in Lahore for private jobs.my father’s 7 marla have 1 room around wall in strting my hose look after under my uncle(taya) almost10years or 15 years till 1992. at this years we rent out this house for two years with addition a new room +hand pump electricity meter already installed for my nephew after that my uncle (chacha) take over after discuss my father for buffaloes barra continue 15 years almost after chacha death his grand sons claim that property is our & demolish our rooms starting new room.
what i do sir we already have stay order on it.

Regards,
Rana saifullah