From 1908 to 1940, Sears, Roebuck & Co. sold “Modern Homes” as complete mail-order house kits. Customers browsed a catalog of hundreds of designs, chose a model, and mailed in payment.

A few weeks later, one or more railroad boxcars arrived in their town, filled with pre-cut lumber, windows, doors, roofing, hardware and other materials, often 10,000–30,000 separate parts. Each kit came with blueprints and a detailed instruction booklet so that a reasonably handy buyer, sometimes with help from relatives or a local carpenter, could assemble the house on their own lot.

Sears also offered financing for many years. Estimates suggest the company sold tens of thousands of these houses, many of which still stand today as ordinary-looking homes in American neighborhoods.