What is the difference between a local historic district and a national register district or place?

Local Historic District is a geographic area within a community singled out for its architectural, historic, cultural or archaeological importance. Property in a historic district is protected from unsuitable change. A lot and the buildings on it are part of the historic landscape and remain essentially the same from the time the district is established. The State of Connecticut enacted legislation in 1961 to protect and preserve such areas by proclaiming them legal entities.

National Register of Historic Places are historic properties worthy of preservation because of “a quality of significance in American history, architecture, archaeology, engineering and culture…in districts, sites, buildings, structures and objects that possess location, design, setting, materials, workmanship, feeling and association…with events that contributed to broad patterns of our history, with lives of significant individuals, with distinctive styles of architecture, or with information important to history or prehistory.”