Cottage orné or decorated cottage, dates back to a movement of 'rustic' stylised cottages of the late 18th and early 19th century during the Romantic movement, when some sought to discover a more "natural" way of living as opposed to the formality of the preceding baroque and neo-classical architectural styles. English Heritage define the term as "A rustic building of picturesque design." They often feature well-shaped thatch roofs with ornate timberwork.
These buildings were generally built by the wealthy either as rustic retreats for themselves or as embellishments for their estates. They were not necessarily cottages in the usual sense of a small dwelling for the rural poor: examples range from the cluster of retirement cottages built by a Bristol banker for his retired staff at Blaise Hamlet to the expansive Royal Lodge, built by king George IV for his own use.
The cottage orné is the archetypal "chocolate box" cottage, but many chocolate box cottages are attractive cottages of conventional purpose, in no way associated with the Romantic era cottage orné.
In the United States the style was exemplified by the use of rustic motifs with a picturesque use of lattice/trellis, fancy scrollsaw work, and lightweight porch supports.