There is no outright model for a farmhouse, yet a large portion of us can remember one when we see it. By definition the firsts were situated on homesteads and were necessary to the life and work of those ranch families who lived there.
Contingent upon when and where those homes were assembled, they could be made of stone, block, shingles or clapboard. Most farmhouses had patios since there was no cooling and many ranch and family errands were embraced there. The yard rooftop gave cover from the sun and downpour yet enabled the cool winds to move through and help make those hot summers decent.