The Olcott Avenue neighborhood in the borough of Bernardsville, located in northeast Somerset County, was developed at the turn of the 20th century as a carefully laid out middle class residential neighborhood. The streets in the district are characterized by lots of moderate size with regular setbacks with moderate to substantial dwellings constructed in a variety of late 19th and early 20th century architectural styles, several of which are particularly noteworthy examples. The original dwellings constructed during the first three decades or so of the 20th century all still stand and the streetscape has changed relatively little since curbs and sidewalks were added and the road was paved around 1916. Residents of the district have continued the long tradition of participation in civic activities.