38, Mount Alton, Knocklyon, Dublin 16, D16 K721
Extensions and alterations to a house, including a new first floor, raising the roof, and installing solar panels.
SD19B/0368 · South Dublin County Council · Lodged 18 September 2019
- Reference
- SD19B/0368
- Authority
- South Dublin County Council
- Register status
- Appealed
- Type
- Permission
- Received
- 18 September 2019
- Floor area
- 85.1 m²
Summary
AI-generatedThe project includes a ground floor entrance porch, a ground floor rear extension, and demolition of a rear shed. It also features a first-floor flat-roofed extension, raising the roof ridge, and installing photovoltaic panels.
Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.
Official record
Development description
Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear extension comprising of alterations and demolition works including the removal of the rear shed; first floor flat roofed extension providing new first floor habitable accommodation, including raising of roof ridge to rear and sides hosting photovoltaic panels to the property.
Land-use zoning
What this land is zoned for
“To protect and/or improve residential amenity”
National zoning type: Existing residential
Objective set by the South Dublin County Development Plan 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.
Read the zoning objectives in the development planBuilt & sold
What happened next
Beyond the decision: whether this development was built, and what property here has sold for.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 35 Mount Alton, Knocklyon, Dublin 16 | Feb 2025 | €595,000 | 43 m |
| 2 Mount Alton Court, Knocklyon, Dublin 16 | Jul 2025 | €1,225,000 | 105 m |
| 4 Knocklyon Avenue, Templeogue, Dublin 16 | May 2025 | €670,000 | 191 m |
| 5 Idrone Park, Knocklyon Wood, Templeogue Dublin 16 | Jun 2025 | €680,000 | 191 m |
| 2 Knocklyon Ave, Knocklyon Woods, Dublin 16 | Dec 2025 | €881,000 | 194 m |
| 6 Idrone Dr, Knocklyon, Templeogue Dublin 16 | Jul 2025 | €575,000 | 262 m |
| 38 Knockfield Manor, Knocklyon, Dublin 16 | Oct 2025 | €975,000 | 293 m |
| 18 Delaford Dr, Knocklyon, Dublin 16 | Jul 2026 | €655,000 | 293 m |
Nearby properties, not this site — a guide to local values.
Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.
Key dates
Timeline
- Application received18 September 2019
- Decision due12 November 2019
- Decision issued12 November 2019
- Appeal submitted5 December 2019
- Appeal decided19 March 2020
- Permission expiry5 April 2020
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- RefusedAt this site
Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear…
38, Mount Alton, Dublin 16
SD18B/0488South DublinLodged 21 Nov 2018Extension
- Exempt — no permission needed50 m away
Proposed whole - house Energy refurbishment, and modest single-storey extension (32sqm) to rear of existing…
26, Mount Alton, Knocklyon, Dublin 16
ED17/0007South DublinLodged 23 Jan 2017Extension
- Granted50 m away
Single storey extension to the side and rear including all associated site works. The extension will consist…
32, Mount Alton, Knocklyon, Dublin 16.
SD07B/0019South DublinLodged 23 Mar 2007Extension
- Granted50 m away
Single storey extension to the side and rear including all associated site works. The extension will consist…
32, Mount Alton, Knocklyon, Dublin 16.
SD07B/0019/EPSouth DublinLodged 27 Jan 2012Extension
- Granted70 m away
Extension to the house by 5.9sq.m. to the side and front and 25.4sq.m. to the rear at ground floor and…
18, Mount Alton, Knocklyon, Dublin 16
SD06B/0015South DublinLodged 13 Jan 2006Extension
- Granted80 m away
Conversion and extension of existing ground floor garage and the construction of new first floor extension…
20, Knocklyon Close, Dublin 16
SD12B/0060South DublinLodged 13 Mar 2012Extension
- Awaiting decision80 m away
Construct a first floor extension to side, conversion of existing garage to domestic use, ground floor…
20 Knocklyon Close, Templeogue, Dublin 16.
S01B/0647South DublinLodged 17 Dec 2001Extension
- Granted90 m away
Demolish existing conservatory and shed and construct a single storey extension to the rear incorporating new…
25, Mount Alton, Knocklyon, Dublin 16
SD04B/0037South DublinLodged 30 Sept 2004Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- RefusedExtension
Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear…
38, Mount Alton, Dublin 16
SD18B/0488South DublinLodged 21 Nov 2018
- WithdrawnExtension
Demolition of existing garage and utility room to rear. Construction of new single storey flat roofed…
18, Bancroft Grove, Dublin 24
SD22B/0470South DublinLodged 28 Oct 2022
- GrantedExtension
Demolish single storey rear extension and chimney stack; construct two storey extension to side (with…
75, Longwood Park, Dublin 14
SD12B/0277South DublinLodged 24 Jul 2013
- InvalidExtension
Permission for extension and alterations to existing dwelling, to include: rear extension, front porch,…
33, Vernon Avenue, Clontarf, Dublin 3 D03 F863
WEB1690/22Dublin CityLodged 27 Jul 2022
- GrantedExtension
Planning permission is sought for a new single storey porch and bay window to the front, demolish existing…
14, Holywell, Upper Kilmacud Road, Dublin 14
D11B/0014Dún Laoghaire–RathdownLodged 18 Jan 2011
- GrantedExtension
Demolition of single storey structures along the north and west elevations and a shed to the south elevation;…
53, Barton Road West, Dublin 14
SD12B/0148South DublinLodged 7 Jun 2012
Community
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