If you’ve actually lived in SD for more than a few months, you’ll know that there is PLENTY of land if we were to actually NEED more houses. Unless you’re privey to some geological info that leads you to believe that there will be a giant earthquake that will cause SD county to seperate from the rest of North America, and become an island in the Pacific, the “we’re out of land” line is nothing more than poor attempt to convince people to buy.
Of course there are obviously more desireable areas than others, but to say that there is a lack of land to build on is just wrong.