In Rent Pressure Zones in Dublin, short-term letting of an entire home as a principal private residence is subject to annual caps. Once certain thresholds are exceeded, hosts may need to engage with the planning process. These planning rules are distinct from the new national registration system introduced in 2026, which defines short-term letting as stays of up to 21 nights. Both sets of requirements operate in parallel, so Dublin hosts need to check planning rules and registration obligations separately.