Since my previous post incited a lot of confusion about the location and whereabouts of the new American consulate, let me clear all doubts.
The new American consulate was an unwelcome neighbour in most locations. It was previously proposed to be constructed near the Karachi Grammar School on Boat Basin. However, its security headaches prompted local area residents to sue for having it not built in their neighbourhoods. Consequently, it is now being constructed at the junction between M. T. Khan road and the Mai Kolachee bypass. If you pass by there and see two tall construction cranes, that is the site. I am highlighting the location in the satellite image below.