This is a classic example of a single storey American Ranch Style house typically ordered from a catalog in the 1950s. They were inexpensive, 2-3 bedroom, 1 bath, single family dwellings. Often called tract homes, it was not unusual for there to be many in a single new subdivision. Young families could choose their new home from a catalog of 20 - 30 floor plans. Developers could use common materials across all of the plans. There are still many, many thousands of these homes in suburbs all across America - though most have been modified over the years since they were quite small to begin with. The concept was not unique to America - many developing cities around the world, where space was available, adopted similar planning with styling changes to suit local tastes.I've tried to keep the material combinations as comprehensive as possible without over complicating the model. You should be able to hide the roof and ceiling to create a doll house view so you can decorate the interior.