New planning legislation is fueling a boom in the construction of backyard cabins and garden rooms across Ireland. Recent changes now permit the building of these structures without requiring traditional planning permission, subject to certain size and usage restrictions. South Dublin County Council is currently experiencing the highest volume of registrations for these “accessory dwelling units.” This shift aims to address housing shortages and provide flexible living spaces. The ease of construction is proving attractive to homeowners seeking additional space for work, hobbies, or family members. Experts predict continued growth in this trend as awareness of the new regulations increases nationwide. This development may also influence future housing policies regarding density and alternative accommodation options.