Beginning in 1908, Sears started selling entire houses. They sold 75,000 DIY mail order homes between 1908 and 1939.
The approximately 25-ton kits were transported by railroad. They had 30,000 pre-cut parts, plumbing and electrical fixtures, and up to 750 pounds of nails.
Weekends in Paradelle 
You might be interested in reading THE BIG STORE by Katz. I read it a few years ago when there was still hope that an early innovator like Sears would survive. https://amzn.to/2Bo2aCe
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