>Marginal land is land that has little or no agricultural or industrial value. So by definition, the "best use" isn't very valuable. I suppose the definition d

>Marginal land is land that has little or no agricultural or industrial value. So by definition, the "best use" isn't very valuable. I suppose the definition doesn't strictly include residential usage, but it's not hard to see that some land is inherently less valuable for residential as well, because location matters.