The ideal size for a DIY backyard basketball court is 30 x 30 feet. This offers you ample room to play above the 3-point line. If you prefer having a full court instead, you can make do with 46 x 78 feet.

Typical backyard basketball court dimensions are 60 feet by 90 feet (for reference, a regulation NBA court is 50 feet by 94 feet). If your backyard space is limited — but you don’t want to settle for the ol’ “single hoop in the driveway” setup — you could also choose a half-court basketball court layout, which is 30 feet by 50 feet.