Prior to commencing any structural works on a property or project you intend to carry out or change the permitted use of a building, it is important to either consult and seek advice from an architect, or visit Planning Authority offices and consult with one of technical planning officers. This preliminary exercise will empower you to know whether such works require a planning permit or not and if so what kind of development permit is needed to cover such works.
The application process is handled by a warranted architect who will file the application online through the Planning Authority eApps Portal.
More information can be found on the website of the Planning Authority