The ‘opt out’ guide to building control

Confused by ROI’s opt-out option for self-builders? We’ve asked Building Control officers to answer your questions.

In this article, we cover:

  • What the Building Control regulations expect of you when you are building or extending
  • The need for building regulations compliance
  • Who needs to sign off on what
  • What your responsibilities are as the owner
  • How the system in ROI differs to the one in NI
  • The difference between opting in and opting out of appointing an Assigned Certifier
  • How to file a commencement notice
  • What you need to include in your commencement notice if you opt in or out
  • What documents to keep and which ones to upload on the Building Control Management System
  • The need for DEAP calculations and how to get them


Written by Astrid Madsen

Astrid Madsen is the editor of the SelfBuild magazine. She previously held the same role in an Irish trade publication, before that she worked at the National Standards Authority of Ireland. She graduated with a BA in Urban Studies from Columbia University in New York and holds an MBA from the Instituto de Estudios Bursatiles in Madrid. France of origin, she now lives in Portarlington, County Laois, where she's taken on the task of renovating a listed building! Email

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