The MacNevin and Hesse-Smith houses were built to the same house plan but of different materials. The MacNevin house is constructed of logs sawn flat on three sides, lapped at the corners. There is a side-gable roof and a center door. A large addition has been constructed on the rear. The Hesse-Smith house is identical, except that it is covered with beveled siding and has a gable-roofed vestibule. The post office operates out of the building during the state fair.
These houses represent one plan of the five from which colonists were allowed to select. None had basements or even full foundations. As illustrated by these two houses, construction materials could be log or wood frame.