This is a historical design/manufacturing problem, not a factual blanket statement. Given the higher quality control standards that would be possible with a mo

This is a historical design/manufacturing problem, not a factual blanket statement. Given the higher quality control standards that would be possible with a modern automated manufacturing process, each individual panel would now be higher quality than the variation of contractors building housing from scratch on-site. From there, its just a matter of ensuring the final build site is prepped to spec. Leveling and grading, water runoff, etc. This would be the only variation between homes, and could be accomplished by a more highly trained crew with specialized equipment, as this would be their regular job. In the end, its just a better way to go than building homes from scratch on site.