am assuming this is a concrete structure, when shifting service toilet to utility area, and if there are apartments above, then running extra lengths of supply/drainage lines & introducing a structural sink slab (if this is concrete) under the new location can be charged extra.. it will be easier to divide the 3rd toilet. all services will be already available. only, do check on supply & drain pipes capacity as load is increased on the same pipes which were serving one toilet earlier..

Pankaj, I just realized that initially you told us that the bathroom area was 12'-0" x 9'-0" and later you mentioned that it was 11'-8" x 8'-0". In the last floor plan, I forgot to change the bathroom with the new dimensions. Below is the floor plan with the correct dimensions for the bathroom. The bedroom is ok, I drew it 19'-2" x 12'-6". The new layout does not change the way things are placed. Everything still fit. The only difference is that the vanity is now 4'-4" long instead of 4'-8". and the toilet is closer to the shower by 1'-0". Can you give me the lengths of the walls K and L. They are the walls between the vanity and the shower area. I will send you the new layout once you give me the length of these 2 walls.

I agree I need a customer wall to wall solution and maybe a full mirror for a small bathroom would look good. The challenge coming are those electrical points. Also someone guide as to what is the right width of the mirror I should put incase I just decide to put mirror over the sink? Is there enough space for framed mirror? The width of the countertop is 26 inch and the height from countertop to sconce is 52 inch. Thanks a lot

@Nitin : One more thing is where to keep washing machine. if basin counter occupies the 4ft wall , then I will be forced to keep the washing machine on the 5ft wall side.