The Piedmont area was actively developed as a residential neighborhood following numerous land transactions between 1866 to 1888. The area was named Piedmont due to its topography and mountain views. The Portland and Vancouver Railway Company extended its tracks to the area in September 1888, when the first rails were laid out along Martin Luther King Jr. Boulevard running through the Piedmont Subdivision up to Portland Boulevard. - NRHP, 7 October 2004