In pickleball (singles and doubles), the kitchen line is set at 7′ from the net on both sides. There are 3 rules to know as it relates to the area between the net and this line: 1) The serve must land beyond the kitchen (a ball landing on the line is a fault), 2) No player may step on or go beyond the kitchen line to hit a ball until/unless the ball has bounced inside the kitchen area, and 3) Should a players paddle, cap, knee, hand, or any other body part, article of clothing or equipment touch or land in the kitchen when executing a volley (before the bounce), it is a fault, even if the player did not step on or enter the kitchen. An interesting note: a player is free to enter and stand in the kitchen at any time during play as long as they don’t hit a volley while there. It seems irrelevant, but there may be a good reason to do this, we just don’t know what it is (yet?).
Similarly in Sandy Pickle, the area within 5’ of the net on each side is called the “No Spike Zone”. On each serve, the ball must pass this line. If the ball hits the ground and touches the kitchen line (or any line for that matter), however, unlike in pickleball, the ball is “in” and the serving team is awarded the point. The player returning the serve must be standing behind the no spike zone line. The “no spike zone” extends upward from that line, and the player returning the serve may not break the plane of the line on the return; At all other times, the only restriction to playing inside this area is that spiking is not allowed inside the boundary. When playing inside this area, the trajectory of the ball must either be upward or flat; a downward ball path results is a fault.
*Note, the no spike zone extends upward from the line, meaning that a ball hit with a downward trajectory must leave the paddle behind this imaginary plane.