Commission voted to designate 157-building district without altering boundaries. On December 13, 2016, Landmark voted to add the Sullivan Thompson Historic District to its portfolio of designated districts. The district moved swiftly through the landmarking process, added to the Commission calendar at its November 1, 2016 meeting, with a hearing held on November 29. The district is comprised of approximately 157 properties, mostly dating from the early 19th century to the early 20th century. The district lies to the south of Houston Street, and is bordered at points by the Charlton-King-Vandam Historic District and SoHo-Cast Iron Historic District Extension.