In 1991, Sand Helsel, Professor of Architecture at RMIT, made a BBC documentary praising Trellick Tower, which helped to change public opinion in its favour.[22] The tower subsequently became more respectable owing to its location in Notting Hill and the gentrification of Golborne Road.[2] Property prices rose and flats in the tower came to be regarded as highly desirable residences; requests to sell flats began to be posted on the tower's communal noticeboard. By 1999 a flat in the tower could sell for £150,000 (£266,000 as of 2020).[3] In 2013 a three-bedroom end apartment (with views on three sides) was let for £2,600 pcm.[24] The tower itself is a local landmark and was awarded a Grade II* listing in 1998, which included the main building and the adjacent row of shops and amenities. Also included is a doctor's surgery with the original shop front and layout.[5] Most of the flats are still social housing, but a significant minority are now privately owned.[6]