I was involved at design stage with the architects and owner of the house to advise on extensions to a detached dwelling all within permitted development rights.  I submitted two applications, one for a single storey side/rear extension, two-storey rear extension, new window on first floor western side elevation and removal of chimney on western side elevation and another application for a hip to gable roof extension, rear dormer roof extension and installation of new window to front gable.  Both applications were approved within 4 weeks of submission.