So I have a big empty warehouse than I'm planning to build a court on (maybe two if I get the bank loan and try to make money out of it). The floor is already leveled (pretty well) and stable. I'm sure there would need support layers, but not as many as building it from an empty field used for gardening or something. Also, I don't think I want the very best asphalt, just something for recreational players to rent (lack of courts where I live could make this profitable) and something to train on. I was wondering if anyone had any experiences doing this and of the costs involved.