20 Stillorgan Park, Blackrock, Co Dublin
Two-storey side extension, single-storey front and rear extensions, and an attic conversion.
D16B/0262 · Dun Laoghaire Rathdown County Council · Lodged 18 August 2016
- Reference
- D16B/0262
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 18 August 2016
Summary
AI-generatedThe development comprises a two-storey side extension, a single-storey rear extension, and a single-storey front extension to an existing two-storey house. The works also include converting the attic space, internal reconfiguration, and elevational changes.
- Storeys
- 2
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
Permission for a two-storey extension (29.6 sqm) to the side (east) and a single-storey extension (40 sqm) to the rear (south), together with a single-storey extension (25.786 sqm) to the front (north) of existing two-storey dwelling, together with alterations to existing elevations, roof, including conversion of existing attic space, internal reconfiguration and refurbishment, all with associated works.
Land-use zoning
What this land is zoned for
“A To provide residential development and improve residential amenity while protecting the existing residential amenities”
Objective set by the 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 15 February 2017.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| Rhus Lodge, 17 Stillorgan Park, Blackrock | Jun 2025 | €1,460,000 | 32 m |
| Ashleigh Cottage, Stillorgan Park, Blackrock | Jul 2025 | €1,225,500 | 45 m |
| 2 Obelisk Walk, St Augustines Park, Carysfort Ave | Feb 2025 | €555,000 | 135 m |
| 1 Obelisk Ave, Blackrock, Dublin | Dec 2025 | €625,000 | 136 m |
| 6 Stillorgan Park, Blackrock, Dublin | Mar 2026 | €1,380,000 | 146 m |
| 6 Fleurville, Carysfort Avenue, Blackrock | Feb 2025 | €655,000 | 152 m |
| 41 Stillorgan Park, Blackrock, Dublin | Jul 2025 | €2,806,000 | 171 m |
| 13 Fleurville, Blackrock, Carysfort Ave | Jan 2026 | €632,000 | 181 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 August 2016
- Decision issued12 September 2016
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
Permission for Retention of 2 no. roof lights, 1 at the front (north) roof plane and one at the western roof…
20 Stillorgan Park, Blackrock, Co Dublin
D17B/0438Dún Laoghaire–RathdownLodged 22 Sept 2017Retention
- GrantedAt this site
Two storey extension to side and front and for single storey extension to rear
21, Stillorgan Park, Stillorgan, Co. Dublin
D06B/0626Dún Laoghaire–RathdownLodged 10 Jul 2006Extension
- GrantedAt this site
Retention permission is sought for amendments to previously approved application D06B/0626 to include…
21, Stillorgan Park, Stillorgan, Co. Dublin
D08B/0262Dún Laoghaire–RathdownLodged 10 Apr 2008Retention
- GrantedAt this site
For a two storey extension to front and to side
18, Stillorgan Park, Stillorgan, Co. Dublin
D05B/0482Dún Laoghaire–RathdownLodged 23 Jun 2005Extension
- GrantedAt this site
Extension to rear - developed roof space with dormer window [LOCATION] 22 Stillorgan Park, Stillorgan, Co.…
22 Stillorgan Park, Stillorgan, Co. Dublin.
D02B/0062Dún Laoghaire–RathdownLodged 8 Feb 2002Extension
- Granted40 m away
Permission is sought for alterations and extensions to existing dwelling comprising: the demolition of the…
23, Stillorgan Park, Stillorgan, Co. Dublin
D14B/0146Dún Laoghaire–RathdownLodged 29 Jul 2014Extension
- Granted40 m away
For alterations to the existing dwelling house incorporating, conversion of the existing attic into a…
16, Stillorgan Park, Blackrock, Co. Dublin
D05B/0338Dún Laoghaire–RathdownLodged 19 Jul 2005Extension
- Granted50 m away
Permission for development. The development will consist of: Demolition of existing double storey rear…
Ashleigh Cottage, 24 Stillorgan Park, Blackrock, Co. Dublin.
D20A/0483Dún Laoghaire–RathdownLodged 10 Jul 2020Extension
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