The document discusses different styles of colonial houses in various regions of 18th century America. In New England, common styles included saltbox houses and Georgian houses, which were typically made of wood with central chimneys. The Mid-Atlantic states featured stone or brick Dutch colonials and German colonials. Southern plantation houses tended to be large with designs like the Georgian or Palladian styles, while poorer farmers lived in simple one or two room houses. Floor plans and characteristics of different house styles are provided for each region.