In March 2014 the Government introduced the Building Control (Amendment) Regulations (BC(A)R), also referred to as S.I.9 of 2014. This legislation describes substantial new procedures for the control of building activity and applies to most building works. In September 2015, following a consultation period, the Government introduced a supplementary Statutory Instrument (S.I.365) that amended and clarified parts of S.I.9.
Prior to commencing a project, Building Owners are advised to read the RIAI Client Guidance Note on Building Control (Amendment) Regulations
Also, your Architect can provide you with specific advice in relation to your project. You can find an architect in your area by searching the RIAI online Practice Directory: http://www.riai.ie/practice_directory/