2 Mount Alton Court, Knocklyon, Dublin 16, D16 HW83
Grant Permission for RetentionPlanning application SD26B/0225W
Dublin - South Dublin County Council
Proposed Development
The development consists of re-location and enlargement of ground floor window to eastern side elevation of dwelling-house.
Application Timeline
Application received
12 May 2026
Decision: Grant Permission for Retention
6 Jul 2026
Decision due
8 Jul 2026
Grant issued
20 Aug 2026
Application Details
- Location
- 2 Mount Alton Court, Knocklyon, Dublin 16, D16 HW83
- Applicant
- N/A
- Application Type
- Retention
- Planning Authority
- South Dublin County Council
- Eircode
- D16 HW83
- Site Area
- 490 ha
Timeline
- Registration Date
- 12 May 2026
- Status
- Final Grant
- Decision
- Grant Permission for Retention
- Decision Date
- 6 July 2026
- Grant Date
- 20 August 2026
- Permission Expires
- 19 August 2031
Location
Planning Applications Nearby
What the council has granted and refused around this site is the best guide to how a similar application will fare.
Detached two storey house which will require the partial demolition of an existing garage with the remainder to be converted into a conservatory attached to the proposed house; driveway to be widened to facilitate a shared entrance.
3, Mount Alton Court, Knocklyon Road, Dublin 16.
Extension to the house by 5.9sq.m. to the side and front and 25.4sq.m. to the rear at ground floor and 28.8sq.m. to the side over existing garage and kitchen at first floor; the change of use from garage to a study together with modifications to internal arrangements and elevations; the provision of automatic gates to existing driveway and the increase in height of the front boundary walls to 1200mm high.
18, Mount Alton, Knocklyon, Dublin 16
Amendment of the position of the entrance door in front porch of existing house; internal changes to the existing layout at ground floor & to convert the existing attic space into new bathroom & studio/bedroom with dormer window to side; a circular window in gable to the front & 'Velux' rooflights in the roof.
10, Mount Alton, Dublin 16
Proposed whole - house Energy refurbishment, and modest single-storey extension (32sqm) to rear of existing 1970's single-storey two bed semi-detached house (92sqm), to form a high quality and thermally efficient three-bed family home. Works to include the replacement of existing sliding entrance porch door (2sqm) with new insulated front door and glazed screen with door to rear garden, all with high performance glazing and frames. New pitched roof extension to have white painted render external wall finish, 1no. main + 3 no.minor rooflights, and new rainwater goods generally. Concrete roof tiles are to match existing roof in height and material. Solar tubes/panels to rear South-facing roof. All colours to match existing where possible.
26, Mount Alton, Knocklyon, Dublin 16
Demolition of existing chimney and sunroom to rear of existing dwelling; construction of single-storey extension with rooflight to rear; two storey extension to side of dwelling with garage doors, dormer window to front and rooflights; single storey extension to front of dwelling; alterations to existing fenestration and material finish to front and side of existing dwelling, including new roof finish; attic conversion with dormer windows and rooflights to front and rear; widening of existing vehicular entrance to 3.5m and all associated site works.
43, Mount Alton, Dublin 16
Domestic, two-storey extension to front/side and garage to side.
5, Knocklyon Grove, Knocklyon, Dublin 16
Single storey extension to front/side and garage to the side.
5 Knocklyon Grove, Knocklyon, Dublin 16
New single storey extension to side of dwelling extending into side garden, new roof lights to north and south elevations & associated site works.
2 Mount Alton Knocklyon Road, Dublin 16
Retain, alter and complete the front garden walls and entrance gates, affecting the setting of a protected structure.
Idrone House, Idrone Avenue, Knocklyon, Rathfarnham, Co. Dublin
To retain, alter and complete the front garden walls and entrance gates (affecting the setting of a protected structure).
Idrone House, Idrone Avenue, Knocklyon, Rathfarnham, Co. Dublin
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