Most often it stands for catch basin. However, its important to look at the legend to assure this term is not used for some thing else
Down
poo extra
Work in Revision. This means that this area of the drawing may change.
DW in a kitchen floor plan means Dish Washer.
wil or WIL stands for Walk In Linen (Linen cupboard)
What does KS mean on a floor plan? Knee Space
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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
main panel
standard tile
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.
The only thing I can find for this is Storage Cupboard
Ceramic Tile Wall.
Look more closely. Does it say "AFF" perhaps? That means "above finished floor".