What is the minimum height for a deck?

Answer 1

off the ground, there really isn't one (check with your local building code office, may be different in localities, this is for Virginia), you don't really want to put wood into the ground unless it is treated, even then it will rot eventually (10 years). but you can build a patio/deck directly onto the ground if you want, but if there is no airflow underneath it will speed up the rotting