Lease issue|owning|karachi|sublease

Assalam-u-alikum,
Baat ye hai ke mai zameen.Com se jub bhi koi property nikalta hu tou akhir me pta chalta hai ke jo portion ya flat mujhey pasand aya hai uska papers clear nhi hotey because aj kal "sub-lease" yaha banned hai, so in this case can you guide me into how i will buy a property under my name!?
Mujhey portion ya flat chahiye aur dono me sublease banned hai in this case kiya karo? Power ka suna hai but wo sahi nhi lag rha mujhey :( aur na cheez apney naam per ho rhi hai aur na itney paisey hai ke zameen ka ghar bnow.....Only new portion ya new flat le sakta hu puranei nhi chahiye....Please please guide me.