Arbor Hill Historic District–Ten Broeck Triangle
In 1975 several residents of the Ten Broeck Triangle formed the Arbor Hill Concerned Citizens Association (AHCCA) to lobby the city for improvements in neighborhood services. Many of them lived in the surviving townhouses, which they had often restored themselves. They saw gentrification as the key to revitalizing the neighborhood, due to its proximity to downtown Albany and the growing service-sector jobs there. To further this goal, they worked with preservationists to have the triangle recognized as a historic district. That area was duly listed on the Register in 1978 under that name.
Arbor Hill Historic District–Ten Broeck Triangle
The irregular quadrilateral within this boundary includes six large blocks covering . In addition to the streets already named the entirety of St. Joseph's Terrace and Hall Place are within the district. It has 220 contributing resources, with only two non-contributing modern properties. One hundred of those properties are houses, primarily two- to three-story wood frame or brick structures built between the 1820s and the early 20th century. The remainder are either small commercial buildings, institutional structures such as the three churches in the district.