News and Publications Read the Latest Report: Permitted development, housing and health: a review of national policy and regulations Click here to read. ‘Research into the quality standard of homes delivered through change of use permitted development rights’ The planning system has been extensively reformed over recent years, particularly in England through the expansion of ‘permitted development’ (PD).Clifford et al 2018 and 2020) Read the research paper: ‘Research into the quality standard of homes delivered through change of use permitted development rights’