Boarders at the school were previously accommodated in two houses: College House (previously split into Colson House and Mannamead House), situated at Ford Park, and Captain's House for those in the Elite Swimming Programme, near the Preparatory School site. Captain's House was closed in 2017, with all boarders now accommodated on the Ford Park site. There has been a preparatory school on various Plymouth sites since the school's foundation; it currently accepts children aged 3 to 11. In 2005, the Prep Schools of Plymouth College and St Dunstans's Abbey combined to form Plymouth College Preparatory School, based at the St Dunstan's site.