Just read an article yesterday about the abundance of jobs in Texas and I think it was North Dakota, which have the lowest unemployment rates in the land. This certainly helps the housing market and sustains housing prices in those states since unemployed people do not buy homes.
Newly
PS Having "too much freaking land to build on" would actually potentially lower values because if such land were developed that would add new construction to compete with existing structures in the housing market, and overbuilding drives prices down.