The median sales price for the American dream--new house, land included--is $236,000, according to government census figures. The average price--$313,000--is higher than the median. Many new houses are palatial. In Manhattan you can pay nearly the U.S. median new home price for a parking spot. "In Chelsea," wrote the New York Times last month, "eight people are vying to buy one of five parking spaces for $225,000 in a 34-unit condo building on West 17th Street. That translates into $1,500 per square foot." And, no, you don't really own the land. Here's a Blue State irony: In areas where U.S....