Houses that once may have been built out of mud, stone or logs could now be built with lumber, brick and quarried stone. By then, pattern books were available, and landowners could pick a style they liked and buy the materials to build it.
They had a simple rectangular floor plan, usually built with local materials, and included a dominant centrally-located fireplace for cooking and heating. Another interesting characteristic that developed because of this new accessibility to materials is that the wealthier landowner often adopted styling that was popular at the time.
Dad and the kids could leave their muddy boots outside so the wooden floors inside stayed clean.