on sale in February 2020 and completion is due by spring 2022. Phase 3 Phase 3 has been developed as student accommodation, consisting of 356 rooms in 74 townhouse style units as well as communal spaces and a convenience shop. Flanks M, N, O, P and Q were developed as part of this phase which has been named Béton House. Planning approval was granted in July 2018 and work began on site in May 2019. Work completed in autumn 2020 with the first students moving in during September 2020. Phase 4 Planning approval was granted in August 2019 for the redevelopment of flanks R, S and T into 95 residential units, artist accommodation, heritage flats, artist studios, and contemporary art gallery. Phase 5 Description Background The Park Hill area of Sheffield contained and had a population density in the range of . It was identified as a slum where, according to Patrick Abercrombie's Sheffield Civic Survey and Development Plan (1924), there were death rates in the lower Park district of 20–26 per 1,000 inhabitants, and infant (under one year) mortality rate of 153–179 per 1,000 births. The central area amounted to , and contained 140 designated clearance areas. Design The 995 Park Hill flats and maisonettes, three pubs and 31 shops were built in four ranges linked by bridges across the upper decks. The ranges were canted at obtuse angles to maximise the panoramic views across the city and the southern Pennines. The stair columns and lifts were placed at each turn. There were two service lifts capable of elevating maintenance vehicles. The site is steeply sloping (gradient 1 in 10), enabling the designers to maintain a constant roof level though the buildings ranged from four to 13 storeys. There were access roadways on every third storey; these serviced a one-storey flat beneath and a two-storey maisonette on that level and on the level above. The horizontal design repeated itself every three bays, centred on a H-frame that carried the services and stair columns. Each of these units contained a one-bedroom flat, a two-bedroom flat, a two-bedroom maisonette and a three-bedroom maisonette, and stair columns. The kitchens and bathrooms were vertically aligned, allowing simple ducting for services and the Garchey waste disposal system. Construction is of an exposed concrete frame with a progression of purple, terracotta, light red and cream brick curtain walling. However, as a result of weathering and