Planning exemption changes aim to unlock home adaptations and ease system pressure
Proposed reforms include detached garden units and expanded extensions as Government targets faster housing delivery
21 April 2026 | 📧 editor@ipropertyradio.com
The Government has announced proposed changes to Ireland’s Planning Exemptions Regulations, aimed at reducing administrative burden on the planning system while giving homeowners greater flexibility to adapt and expand their homes.
Minister for Housing, Local Government and Heritage James Browne TD and Minister of State for Planning John Cummins TD confirmed that the updated Exempted Development Regulations for residential dwellings were brought to Cabinet this week. The reforms form part of the implementation of the Planning and Development Act 2024 and reflect a Programme for Government commitment to streamline planning processes.
Exempted development rules, which have not been significantly revised in almost 25 years, set out the types of works that can be carried out without planning permission. The proposed changes are intended to enable planning authorities to focus resources on more complex applications while allowing homeowners to make smaller-scale changes more efficiently.
The proposals follow a public consultation process in 2025, which attracted almost 1,000 submissions.
Among the most significant measures is the introduction of a new exemption allowing for a detached auxiliary dwelling within the curtilage of an existing home. These units, ranging from 32 to 45 square metres, must be connected to the main house’s services.
The Government has indicated that where such units are rented, they will fall outside the scope of the Residential Tenancies Acts 2004–2026. Tax treatment, including potential interaction with the Rent-a-Room relief, will be considered separately by the Minister for Finance as part of the Budget process.
Additional proposed exemptions include permission-free subdivision of a principal dwelling to create one additional self-contained unit within the existing building footprint, subject to a minimum size of 32 square metres per unit.
Other changes include an increase in allowable extension size from 40 to 45 square metres, expanded allowances for garden structures such as home offices and gyms from 25 to 30 square metres, and new provisions to permit dormer roof boxes and roof lights.
All developments will remain subject to existing Building Regulations, Building Control requirements and fire safety standards.
Minister Browne said the reforms are designed to “cut red tape” and accelerate housing delivery, adding that the changes will make the planning system “easier for citizens while freeing up planning resources for more complex priorities”.
Minister Cummins stated that the measures are intended to remove unnecessary elements from the planning system and “empower people” to make decisions about their own living space, while noting that certain provisions, including detached units, will only be suitable in specific contexts.
The draft regulations are currently undergoing environmental assessment. Following completion, they will require approval by both Houses of the Oireachtas after review by the Joint Oireachtas Committee on Housing.
A review of the new exemptions is planned 18 months after they come into effect.
