New Exempted Development Regulations in Ireland: What Homeowners Need to Know
New Exempted Development Regulations for residential properties came into effect on 27 July 2026. Exempted development regulations had not been substantially updated in 25 years and the new regulations should assist home owners to make efficient use of the space in their homes.
The following summarises the works which are exempt from planning permission:
What Works Are Exempt from Planning Permission?
- 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 the 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 bikes, 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
Important Conditions and Time Limits
If carrying out any of the above works it is important to comply with the conditions of the relevant regulations. Works must also commence and be completed in the period between 27 July 2026 and 31 December 2030.
For more information on this topic, please contact Godfrey Hogan on godfrey@gibneyhogan.ie
The content of this article is provided for information purposes only and does not constitute legal or other advice.
