I have no formal qualifications
If you believe that you have been performing duties in the Irish State commensurate with those of an Architect for ten years prior to 1 May 2008, you may consider applying to the Technical Assessment Board for assessment of eligibility for registration. This is known as Technical Assessment under Route E.
If you have successfully completed the Architects Register Admission Examination and are at least thirty-five years of age, you may apply for admission through Route F.