CAST is based in Helston, in the former School of Science and Art given to the town by the philanthropist John Passmore Edwards in 1897. The building was extended in 1905 and 1913 when it became a secondary school, but it became redundant with the introduction of comprehensive education in the 1970s and was later used as a community centre. It was boarded up in 2010 and finally sold by Helston Town Council in 2012. When they took on the management of the building the Trustees of CAST raised funds for a limited schedule of urgent repairs, pending a more substantial scheme of renovations.