When building a house plan under 1000 feet, your design might be small in terms of sq ft but it can be a very smart way to go! These plans typically have 1-2 bedrooms and 1 or 1 1/2 bathrooms. Most are one story homes although some are one-and-a-half stories tall. Many of these make great cottages, vacation homes, or country retreats. Some have been built as a guest house. Others are ideal for small or narrow lots.