3, Knocklyon Grove, Knocklyon, Dublin 16
Conversion of a garage and construction of a single-storey side extension to create a granny flat.
SD17B/0298 · South Dublin County Council · Lodged 7 November 2017
- Reference
- SD17B/0298
- Authority
- South Dublin County Council
- Register status
- Decided
- Type
- Permission
- Received
- 7 November 2017
- Floor area
- 53.07 m²
Summary
AI-generatedThe project involves converting the existing garage at the side of the house. A new single-storey extension will also be built to create a granny flat.
- Storey
- 1
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
Conversion of the existing garage and construction of a single storey extension to side of existing house to create a granny flat.
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.
Built — construction complete
A commencement notice records works starting on 12 February 2018.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 2 Mount Alton Court, Knocklyon, Dublin 16 | Jul 2025 | €1,225,000 | 126 m |
| 5 Idrone Park, Knocklyon Wood, Templeogue Dublin 16 | Jun 2025 | €680,000 | 172 m |
| 35 Mount Alton, Knocklyon, Dublin 16 | Feb 2025 | €595,000 | 218 m |
| 6 Idrone Dr, Knocklyon, Templeogue Dublin 16 | Jul 2025 | €575,000 | 222 m |
| 5 Garthy Wood, Knocklyon Rd, Templeogue Dublin 16 | Jul 2025 | €382,000 | 238 m |
| Apt 9 Garthy Wood, Knocklyon Road, Dublin 16 | Mar 2026 | €403,000 | 238 m |
| 2 Idrone Close, Knocklyon, Dublin 16 | Jan 2025 | €800,000 | 246 m |
| 28 Beverly Ave, Beverly Court, Knocklyon | Feb 2025 | €475,000 | 257 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 received7 November 2017
- Further information requested17 October 2017
- Further information received7 November 2017
- Decision due4 December 2017
- Decision issued4 December 2017
- Grant issued23 January 2018
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted40 m away
Domestic, two-storey extension to front/side and garage to side
5, Knocklyon Grove, Knocklyon, Dublin 16
SD02B/0491South DublinLodged 30 Oct 2002Extension
- Invalid40 m away
Single storey extension to front/side and garage to the side
5 Knocklyon Grove, Knocklyon, Dublin 16
SD02B/0439South DublinLodged 25 Sept 2002Extension
- Granted40 m away
Construct a detached three bedroom dormer bungalow at side of existing house; provide an additional vehicular…
4, Knocklyon Grove, Templeogue, Dublin 16
SD14A/0202South DublinLodged 5 Dec 2014New dwelling
- Granted40 m away
Side extension to existing bungalow
4, Knocklyon Grove, Templeogue, Dublin 16
SD10B/0010South DublinLodged 19 Jan 2010Extension
- Granted40 m away
Provision of a house to side of existing house
4, Knocklyon Grove, Templeogue, Dublin 16
SD04A/0828South DublinLodged 9 Nov 2004New dwelling
- Invalid50 m away
Create additional attic space containing a bedroom, bathroom, home office and recreation room by replacing…
4, Knocklyon Grove, Templeogue, Dublin 16
SD21B/0254South DublinLodged 5 May 2021Extension
- Granted50 m away
Additional attic space containing a bedroom; bathroom; home office; and recreation room by replacing the…
4, Knocklyon Grove, Templeogue, Dublin 16
SD21B/0330South DublinLodged 3 Jun 2021Extension
- Granted50 m away
Amendments to previously approved SD20B/0286 consisting of reduction in the extent of the granted rear…
3, Idrone Avenue, Dublin 16
SD22B/0165South DublinLodged 19 Apr 2022Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- InvalidExtension
Conversion of existing garage and extension to side to accommodate a new granny flat along with ancillary…
75, Brandon Road, Drimnagh, Dublin 12
WEB1807/20Dublin CityLodged 12 Nov 2020
- GrantedExtension
Garage conversion and a single storey extension to rear, to provide granny flat
135 Whitehall Road, Dublin 12.
S99B/0536South DublinLodged 13 Aug 1999
- GrantedExtension
The construction of a single storey Granny Flat extension to the side of existing house. The works will…
2, Finglaswood Road, Finglas West, Dublin 11
WEB1088/23Dublin CityLodged 9 Feb 2023
- GrantedExtension
Single storey extension to front and side of an existing house with the conversion of an existing garage to…
Treetops, Brides Glen Road, Rathmichael, Dublin 18
D04A/1196Dún Laoghaire–RathdownLodged 19 Oct 2004
- GrantedChange of use
Construction of extensions to side and rear of garage, alterations to existing elevations and to use complete…
Beech Park, Knockauduff, Rathcormac, Co. Cork
155564corkLodged 14 Jul 2015
- Awaiting decisionExtension
Construct a single storey extension to existing dwelling and convert existing garage for domestic use as a…
Bawnavota, Kinsale, ,
134551corkLodged 2 Apr 2013
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