Approximately, an official competition dart court roughly takes up 4-5 meters.
The dartboard should hang at a length of 173 cm from the ground up with a throwing distance of 237 cm starting from the oche.
The oche must have a width minimum of 61 cm and a 3,8 to 6 cm height.
Another important factor is the lightning, which should be mounted in a way where it doesn't cast any shadows on the darts while throwing or landing them in your dartboard.