What to do with empty land next to apartment buildings

[Christian Beebe]

So we have a 48 unit complex with two buildings facing each other.  Next to them is a large decent amount of land, in southwest Ohio, filled with trees and such.  There is enough land to build another building easily but this is not our world so looking to figure out what to do with this land and having it sit there empty doesn't make sense to me.  So basic questions like any ideas, who to contact to work out development, where to even start, etc, etc.  Appreciate any thoughts.