If you are looking in the area of DHA or Clifton, you won't find a 4 bedroom flat in that range. At most a 3 or a regular 2 easily is currently in that range. Best bet is to invest in new property which is bit expensive but future safe since the prices go up eventually. You can find a 3 bedroom flat in areas like DHA Phase 2 and 4 commercial while a 2 bedroom in DHA Phase 5, 6, 7 commercial.
These are based on the basis of new apartments. All new apartments have attached bathrooms.
Hope it helps