1, Knocklyon Close, Knocklyon, Dublin 16.
Extension of duration for house subdivision and construction of a new adjoining dwelling in Knocklyon.
SD16A/0307/EP · South Dublin County Council · Lodged 15 April 2021
- Reference
- SD16A/0307/EP
- Authority
- South Dublin County Council
- Register status
- Decided
- Type
- Extension Of Duration Of Permission
- Received
- 15 April 2021
- Residential units
- 1
Summary
AI-generatedAn extension of duration is sought for the demolition of a conservatory and utility room, followed by the subdivision of the existing house to build a new adjoining dwelling to the side.
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
Demolition of existing conservatory and utility room, alterations and extension to rear of existing dwelling, subdivision of existing dwelling to facilitate the construction of a new adjoining dwelling to side of existing dwelling along with all associated site works and services including new pavement dish.
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 |
|---|---|---|---|
| 5 Idrone Park, Knocklyon Wood, Templeogue Dublin 16 | Jun 2025 | €680,000 | 93 m |
| 6 Idrone Dr, Knocklyon, Templeogue Dublin 16 | Jul 2025 | €575,000 | 148 m |
| 4 Knocklyon Avenue, Templeogue, Dublin 16 | May 2025 | €670,000 | 164 m |
| 60 Knocklyon Green, Templeogue, Dublin 16 | Apr 2026 | €650,000 | 165 m |
| 51 Idrone Dr, Knocklyon, Dublin 16not full market price | Mar 2025 | €487,500 | 166 m |
| 35 Mount Alton, Knocklyon, Dublin 16 | Feb 2025 | €595,000 | 168 m |
| 2 Knocklyon Ave, Knocklyon Woods, Dublin 16 | Dec 2025 | €881,000 | 174 m |
| 19 Knocklyon Green, Templeogue, Dublin 16 | May 2025 | €830,000 | 211 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 received15 April 2021
- Decision due9 June 2021
- Decision issued9 June 2021
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
Two storey extension to side of existing house incorporating dormer windows to front and rear with new…
1, Knocklyon Close, Knocklyon, Dublin 16.
SD06B/0172South DublinLodged 21 Mar 2006Extension
- GrantedAt this site
(a) Demolition of screen wall; (b) construction of a part two-storey, part single storey new dwelling to the…
1, Knocklyon Close, Knocklyon, Dublin 16 D16KR79
SD22A/0036South DublinLodged 3 May 2022New dwelling
- GrantedAt this site
Alterations to existing house & new extension to front side & rear consisting of a ground, first floor…
1, Knocklyon Close, Knocklyon, Dublin 16.
SD08A/0468South DublinLodged 4 Jul 2008New dwelling
- GrantedAt this site
Demolition of existing conservatory and utility room, alterations and extension to rear of existing dwelling,…
1, Knocklyon Close, Knocklyon, Dublin 16.
SD16A/0307South DublinLodged 25 Aug 2016New dwelling
- GrantedAt this site
Single storey extension to rear (30sq.m); bay window extension to front at ground floor (3sq.m); extension to…
3, Knocklyon Close, Knocklyon, Dublin 16
SD14B/0090South DublinLodged 1 Apr 2014Extension
- GrantedAt this site
Conversion and ground floor extension to front of existing garage and first floor extension over garage and…
5 Knocklyon Close, Knocklyon Wood, Templeogue, Dublin 16.
S00B/0049South DublinLodged 3 Feb 2000Extension
- Granted40 m away
Conversion of garage to study and enclosure of porch with pitched roof over all including kitchen to rear…
8, Knocklyon Close, Knocklyon, Templeogue, Dublin 16
SD05B/0210South DublinLodged 29 Mar 2005Extension
- Granted40 m away
Family room extension to the rear of the ground floor and bedroom, bathroom extension to the front and side…
6 Knocklyon Court, Dublin 16.
S99B/0209South DublinLodged 1 Apr 1999Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedNew dwelling
Demolition of existing conservatory and utility room, alterations and extension to rear of existing dwelling,…
1, Knocklyon Close, Knocklyon, Dublin 16.
SD16A/0307South DublinLodged 25 Aug 2016
- GrantedExtension
Demolish part of existing dwelling house (Conservatory), alteration/modifications to exiting dwelling…
8 Norwood Grove, Ringmeen, Cobh, Co. Cork,
184877corkLodged 10 Apr 2018
- GrantedExtension
Demolition of a single storey conservatory to rear and garage to side of existing dwelling; construction of a…
22, Muckross Green, Perrystown, Dublin 12
SD20B/0068South DublinLodged 2 Mar 2020
- GrantedExtension
Demolition of existing conservatory, single storey extensions to front, side and rear and First floor…
248A, Orwell Park Glade, Templeogue, Dublin 6W, D6W Y578
SD25B/0634WSouth DublinLodged 6 Nov 2025
- GrantedExtension
The demolition of a conservatory to the side of an existing dwelling house and the construction of 2 no.…
Shanaclogh, Castletown, Enniskeane, Co. Cork
1493corkLodged 10 Feb 2014
- InvalidExtension
Demolition of the existing single storey conservatory and the construction of a new single storey extension…
148, Woodfield, Dublin 16
SD13B/0016South DublinLodged 30 Jan 2013
Community
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