You must apply for a Disability Access Certificate for some new buildings and some alterations and extensions to existing buildings.
A disability access certificate (DAC) shows that you have made adequate provision for people with disabilities by complying with Part M of the Building Regulations 1997-2010.
You must apply for a DAC for all new buildings (including apartments, but not houses).
You can check the Department of Environment, Community and Local Government’s FAQs for more information.