Look more closely. Does it say "AFF" perhaps? That means "above finished floor".
What does KS mean on a floor plan? Knee Space
Down
Floor plan mean Scottish plan. It shows the distance of room from the floor and physical appearance of room walls and all other features of rooms.
poo extra
Water heater
standard tile
main panel
Pulte Planning Center
"K.S." on a floor plan most likely stands for kitchen sink, indicating the location where the kitchen sink will be placed.
Ceramic Tile Wall.
Work in Revision. This means that this area of the drawing may change.
DW in a kitchen floor plan means Dish Washer.