>> Housing should be worth about $100-125 per square-foot, with about a 50-100% premium for top locations (urban areas) due to increased construction costs and reduced transportation costs (proximity to desirable places)
I'd be curious to hear this as well. There are many parts of the country (a vast majority by area, and a not-insignificant minority by population) where housing is way less than $100/sqft. In the (small) city I just moved from, $30-40/sqft was more like it, and that was higher than the entire surrounding area.
How'd you arrive at this number? Citation needed?