[gmkoliver]

Exactly; even though the article mentions the meaning of the graph, it seems to misinterpret it anyway.

From my perspective as a residential carpenter I see a continuing decline in the cost of labor combined with increases in efficiency due to new materials and equipment. Combine that with the high price of land in most urban areas, and I don't see much incentive for the big home builders to push manufactured homes and on-site automated fabrication.