[quote=Eugene] . . . Naturally, places with “prescriptive land regulation” (read: limited land) have more apartments/condos and places with lots of land have more detached houses. . . [/quote]

Eugene, I think what those charts were referring to by “prescriptive land regulation” was that the most “regulated city in the US,” for example, was San Francisco, CA (and in order of “regulation” on down). In other words, the areas with the most “prescriptive land regulation” were those areas with strict zoning laws and the most city ordinances and land-use regulations to navigate (in order to build/remodel).