Of all the questions we get, this is by far one of the most commonly asked — and one of the most important, because of the safety issues involved. At a minimum, outdoor courts should have 12′ between each sideline, although an 18′ separation is preferred. For a battery of courts within a common enclosure, a 24′ separation between courts is recommended. This permits sufficient space for a shade structure, player seating/storage between courts, as well as a safe overrun area for players.
It also permits the installation of separator fences to prevent balls from rolling into the next court. For indoor courts where movable netting is used between courts, a minimum of 18′ between courts is recommended. (Divider netting is not considered a fixed obstruction.) 18′ is the minimum recommended distance between indoor courts.