A high end house can go for up to $350 a sq foot depending on all you want and the cost of the specialty stuff it could get up there it hard to guess when it comes to buildings as big as you are talking about if you hired someone to build just a shell of that size probobly close to $250,000
Large Enough for a full size NHL rink with benches on the sides & behind the goals for use during the summer & a basketball court for the winter
