How do I object to planning permission in Ireland?

Objecting formally to a planning application is done by submitting a written observation to the planning authority that is dealing with the case — usually the city or county council where the site is located. The submission must be in writing, identify the specific application by its reference number, and be received before the public consultation period closes, which typically runs for a set number of weeks from the date the application was lodged.

A strong submission focuses on planning grounds rather than personal or commercial disputes. Relevant grounds include conflict with the local authority's development plan or local area plan, overshadowing or loss of light, overlooking and loss of privacy, traffic and parking impacts, drainage and flooding, noise, damage to visual amenity or streetscape character, and impacts on protected structures or habitats. Grounds such as a drop in property value, personal dislike of the applicant, or private boundary disputes carry little or no planning weight.

You must pay the prescribed fee with your submission — a modest amount set by regulation — and the planning authority cannot validly consider a submission that omits it. Once submitted, your observation becomes part of the public planning file and is available for anyone to view, including the applicant.