In my house yes, in my flat no because the kitchen is a really long narrow room and the window takes up most of the narrow side. If the sink was at it it would a) block the door and b) look wierd because the window starts about mid thigh level.

My student flat didn't have it at the window either because the kitchen/living room was open plan with the living room area at the side of the room with the windows. I think its more common in older houses.