In most areas of the South the earliest settlers constructed houses to provide basic shelter suited to their local climate, not to establish permanence or demonstrate wealth or power. Although some plantation houses were planned as grand mansions and were built all at once from the ground up, many more began as fairly rudimentary structures that either stayed that way, were replaced, or were enlarged and improved over time as fortunes improved. All romanticized notions aside, the plantation house was, at its most basic, a functioning farmhouse. Also, until fairly recent times, scholars and local historians usually focused on the life of the plantation owner, that is, the planter, and his or her family rather than the people they held as slaves. Most historical research has focused on the main houses of plantations, primarily because they were the most likely to survive and usually the most elaborate structures in the complex. Its planned side-wings and linking arcades were executed but demolished in the late 19th century. The Palladian-inspired main house at Drayton Hall near Charleston, South Carolina, built in 1738. Plantation house in the Southern United States Moneyhon defines large planters as owners of twenty or more enslaved humans, and six hundred or more acres. In Chicot and Phillips counties, Arkansas, Carl H. Campbell classifies large planters as owners of 20 enslaved humans, and small planters as owners of between ten and 19 enslaved humans. In his study of Harrison County, Texas, Randolph B. Formwalt's planters are in the top 4.5 percent of land owners, translating into real estate worth $6,000 or more in 1850, $24,000 or more in 1860, and $11,000 or more in 1870. In his study of southwest Georgia, Lee Formwalt also defines planters in size of land holdings rather than enslaved people. A planter, for Wiener, owned at least $10,000 worth of real estate in 1850 and $32,000 worth in 1860, equivalent to about the top 8 percent of landowners. In his study of Black Belt counties in Alabama, Jonathan Wiener defines planters by ownership of real property, rather than of enslaved people. Robert Fogel and Stanley Engerman define large planters as owning over 50 enslaved people, and medium planters as owning between 16 and 50 enslaved humans. The term planter has no universally-accepted definition, but academic historians have defined it to identify the elite class, 'a landowning farmer of substantial means.' In the ' Black Belt' counties of Alabama and Mississippi, the terms 'planter' and 'farmer' were often synonymous. Most enslaved people labored in agricultural production, and planter was a term commonly used to describe a farmer with many enslaved humans. Until December 1865 slavery was legal in parts of the United States. The 19th-century development of the Deep South for cotton cultivation depended on large plantations with much more acreage than was typical of the Upper South and for labor, planters held hundreds of enslaved people. In Charleston and Savannah, the elite also held numerous enslaved people to work as household servants. In the Lowcountry of South Carolina, by contrast, even before the American Revolution, planters holding large rice plantations typically owned hundreds of enslaved people. Old Jackson Plantation house, Schriever, Louisiana, June 1940 Common or smaller planters in the late 18th and 19th century had more modest wood-frame buildings, such as Southall Plantation in Charles City County. The largest and wealthiest planter families, for instance, those with estates fronting on the James River in Virginia, constructed mansions in brick and Georgian style, e.g.

There was a variety of domestic architecture on plantations.

The shift away from tobacco meant they had slaves in excess of the number needed for labor, and they began to sell them in the internal slave trade. By the late 18th century, most planters in the Upper South had switched from exclusive tobacco cultivation to mixed-crop production, both because tobacco had exhausted the soil and because of changing markets. The majority of slaveholders held 10 or fewer enslaved people, often to labor domestically. Major planters held many more, especially in the Deep South as it developed. As the Upper South of the Chesapeake Bay colonies developed first, historians of the antebellum South defined planters as those who held 20 enslaved people. Slavery and plantations had different characteristics in different regions of the South. In the American South, antebellum plantations were centered on a ' plantation house,' the residence of the owner, where important business was conducted.

Galleried planters cottage