New Exemptions 27.07.06

New Regulations providing for new or amended classes of exempted developments come into effect on Monday, 27 July 2026. The seven Planning and Development (Exempted Development (Act of 2000)) Regulations amend the Planning and Development Regulations 2001 and are linked at the bottom of this page. A consolidated version of the Planning and Development Regulations 2001-2026 can be found at: https://www.gov.ie/en/department-of-housing-local-government-and-heritage/publications/planning-legislation/.

Circular Letter PLR02/2026 from the Department of Housing, Local Government and Heritage summarises the relevant changes as providing for:

• The existing exemption for extension of the principal dwelling will be increased from 40 square metres to 45 square metres.
• A new exemption will provide for extension via the addition of dormer roof boxes and roof lights on the principal dwelling.
• A new exemption for sub-division of the principal dwelling will allow for the creation of up to 1 additional self-contained unit within the existing building envelope, with a minimum floor area for each subdivided unit of 32 square metres.
• A new exemption for an auxiliary habitable dwelling will allow for the addition of a detached auxiliary dwelling to the rear of the principal house, linked to the services of the principal house, which may be between 32 square metres and 45 square metres.
• A new exemption will allow for the provision of insulation on external walls of a dwelling, in line with existing SEAI grant provision.
• The exemption for a heat pump will be expanded so that it is not restricted to the rear of the property.
• A new exemption will provide for cycle or bin storage at both the front and back of the property, with enough space to hold either 3-4 adult size bicycles, 2 cargo bikes or 3 wheelie bins.
• The existing exemption for a structure in the back garden (such as a shed, store, home office or gym) will be increased from 25 square metres to 30 square metres.

These new / amended classes of development do not require planning permission. To benefit from these exemptions, a development must comply with the description of development and the associated conditions and limitations included in the relevant Regulations.

In relation to Class 1A (subdivision of a dwelling) and Class 3A (detached house in rear garden), it is important to note the relevant conditions and limitations. Notification is required to be submitted to the local authority 14 days prior to the commencement of works (see form on this page) and such works must be commenced and completed in the period beginning on the date that this Regulation is signed and ending on 31 December 2030.