I born and bread in Hong Kong, frankly speaking, for private housing those flat the kitchen is far away from washroom they don't have hot water in kitchen. Mostly the heater is place in washroom. I'm this case, I have ask the decoration technician to make a pipe connect to kitchen, they said it will cost a lot. Because the pipe cannot build outside of the building and it need to dig it in the floor which easily to broke the electric circuit downstairs. But for public building, it almost 100% have hot watch in kitchen by the design.