Commencement Notices Details and Spatial Data A commencement notice is a notification to a Building Control Authority that a person intends to carry out either works or a material change of use to which the Building Regulations apply.''Frequently asked questions for commencement notices'http://www.dublincity.ie/Planning/BuildingControl/Pages/FrequentlyAskedQuestionsforCommencementNotices.aspx'The commencement notice data is extracted from the …