A project to investigate the history and archaeology of the Chapel Street Car Park site in King's Lynn was undertaken between April and October 2017 by Sarah Newsome of Historic England's Historic Places Investigation Team (East). It aimed to understand the potential nature of buried archaeological deposits and provide information on the past character of the site to inform future development. The project was undertaken as part of the wider Heritage Action Zone (HAZ) project for King's Lynn in partnership with the Borough Council of King's Lynn and West Norfolk. It involved researching the history and archaeological potential of the Chapel Street site based on documentary sources including aerial photographs, historic photographs and maps and existing geotechnical data. No field-based or intrusive archaeological research was undertaken. The research has revealed that the site was occupied from at least the late 13th century onwards.