25, Mount Alton, Knocklyon, Dublin 16
Demolition of a conservatory and shed for a rear extension, attic conversion, and alterations in Knocklyon.
SD04B/0037 · South Dublin County Council · Lodged 30 September 2004
- Reference
- SD04B/0037
- Authority
- South Dublin County Council
- Register status
- Appealed
- Type
- Permission
- Received
- 30 September 2004
- Floor area
- 73 m²
Summary
AI-generatedThe project involves demolishing an existing conservatory and shed to build a single-storey rear extension with a new chimney. It also includes an attic conversion for two bedrooms and a bathroom, rooflights, and ground floor alterations.
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
Demolish existing conservatory and shed and construct a single storey extension to the rear incorporating new chimney stack and attic conversion to facilitate 2 no. Bedrooms with separate bathroom facilities, two rooflights to the front with five to the rear and internal alterations to existing ground floor plan
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 | 44 m |
| 2 Mount Alton Court, Knocklyon, Dublin 16 | Jul 2025 | €1,225,000 | 162 m |
| 2 Knocklyon Ave, Knocklyon Woods, Dublin 16 | Dec 2025 | €881,000 | 163 m |
| 4 Knocklyon Avenue, Templeogue, Dublin 16 | May 2025 | €670,000 | 164 m |
| 38 Knockfield Manor, Knocklyon, Dublin 16 | Oct 2025 | €975,000 | 236 m |
| 18 Delaford Dr, Knocklyon, Dublin 16 | Jul 2026 | €655,000 | 241 m |
| Apt 5 Prospect Lodge, Knocklyn Road, Dublin 16 | Jun 2025 | €330,000 | 245 m |
| 5 Idrone Park, Knocklyon Wood, Templeogue Dublin 16 | Jun 2025 | €680,000 | 266 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 received30 September 2004
- Further information requested31 March 2004
- Further information received30 September 2004
- Decision due26 October 2004
- Decision issued22 October 2004
- Grant issued2 December 2004
- Appeal submitted20 December 2004
- Appeal decided5 April 2005
- Permission expiry29 April 2005
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- GrantedAt this site
Erection of a detached house with new entrance from the existing road Hammerhead
Site to rear of 23 Mount Alton, Knocklyon Road, Templeogue, Dublin 16.
S99A/0185South DublinLodged 25 Mar 1999New dwelling
- Granted50 m away
New extension to include new two storey extension to side, glazed porch to front, new pitched roof to front…
27, Knocklyon Heights, Templeogue, Dublin 16.
SD06B/0098South DublinLodged 19 Jun 2006Extension
- Granted60 m away
Conversion of garage at side of house to t.v. room with pitched roof over
19 Mount Alton, Knocklyon, Dublin 16.
S00B/0093South DublinLodged 19 Apr 2000Extension
- Granted80 m away
Divide existing site into 2 sites, demolish existing garage and kitchen area of existing house, erect a new 4…
32, Knocklyon Heights, Knocklyon, Dublin 16, D16P2K0
SD25A/0189WSouth DublinLodged 16 Aug 2025New dwelling
- Granted80 m away
Divide existing site into 2 sites, demolish existing garage and kitchen area of existing house, erect a new 4…
32, Knocklyon Heights, Knocklyon, Dublin 16
SD18A/0179South DublinLodged 22 May 2018New dwelling
- Granted80 m away
Rear single storey family room
19 Knocklyon Heights, Templeogue, Dublin 16.
S99B/0491South DublinLodged 22 Jul 1999Extension
- Part granted, part refused90 m away
Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear…
38, Mount Alton, Knocklyon, Dublin 16, D16 K721
SD19B/0368South DublinLodged 18 Sept 2019Extension
- Refused90 m away
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
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedExtension
Demolition of the existing conservatory to the rear and the construction of a part two storey, part one…
26, Arnold Park, Glenageary, Co.Dublin
D07A/1750Dún Laoghaire–RathdownLodged 20 Dec 2007
- GrantedExtension
Demolition of the existing conservatory to the rear (12sqm) and the construction of (1) a rear ground floor…
54, Saint Gabriels, Cabinteely, Dublin 18.
D07B/0812Dún Laoghaire–RathdownLodged 14 Sept 2007
- InvalidExtension
Demolish existing single storey extension to the rear and to construct new single storey extension to rear,…
77, Harold's Cross Cottages, Harold's Cross, Dublin 6
WEB1681/20Dublin CityLodged 12 Oct 2020
- GrantedExtension
To demolish single storey extension at side and erect a two storey extension at side, a single storey…
158, Foxrock Park, Dublin 18
D06B/0392Dún Laoghaire–RathdownLodged 5 May 2006
- GrantedExtension
Demolish existing single storey conservatory (14.5 sq.m) to rear and to construct a single storey kitchen /…
6, Greenlea Avenue, Terenure, Dublin 6w
3576/18Dublin CityLodged 25 Jul 2018
- GrantedExtension
Demolition of an existing single story glazed conservatory and store, construction of a new 2 storey…
16 Idrone Park, Knocklyon, Dublin 16, D16PX29
SD26B/0062WSouth DublinLodged 11 Feb 2026
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