20, Ardagh Crescent, Blackrock, Co. Dublin
Single storey rear extension, front and rear attic dormers, garage conversion, and widening of the driveway entrance.
D16A/0970 · Dun Laoghaire Rathdown County Council · Lodged 21 December 2016
- Reference
- D16A/0970
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 21 December 2016
Summary
AI-generatedThe project includes a single storey rear extension with a flat roof, dormer windows to the front and rear at attic level, and a change to the main roof profile. It also proposes converting the garage into a guest bedroom, adding a front canopy, and widening the driveway entrance.
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 is sought for construction of a single storey extension to the rear with flat roof and dormer window extension to the front and to the rear at attic level; change of roof profile to main roof; canopy over front entrance; alterations to elevations and internal layout; 1 no. Of velux window to the front; 1 no. Of roof light to the rear, conversion of garage to guest bedroom with en-suite and all associated site development works. Including increasing the driveway entrance from 2.4 me...
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 24 May 2017.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 25 Ardagh Grove, Blackrock, Dublin | Nov 2025 | €765,000 | 119 m |
| 29 Belmont Lawn, Stillorgan Rd, Blackrock | Dec 2025 | €1,132,000 | 173 m |
| Apt 509, Galloping Green, Stillorgan | Mar 2025 | €475,000 | 203 m |
| 521 The Galloping Green, Stillorgan, Dublin | Aug 2025 | €575,000 | 203 m |
| Ardagh Lodge, Newtownpark Ave, Blackrock | Oct 2025 | €475,000 | 225 m |
| 415 Galloping Green, Stillorgan Rd, Blackrock Dublin 18not full market price | Sept 2025 | €44,000 | 232 m |
| 2 Ardagh Grove, Blackrock, Dublin | Oct 2025 | €795,000 | 235 m |
| 14 Ardagh Avenue, Blackrock, Dublin | Sept 2025 | €875,000 | 236 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 received21 December 2016
- Decision issued21 February 2017
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
2 storey extension to rear, first floor extensions to side and front with dormer windows and widened front…
22 Ardagh Crescent, Blackrock, Co. Dublin.
D02B/0363Dún Laoghaire–RathdownLodged 24 May 2002Extension
- Granted30 m away
Entrance canopy to front, shower room to side, single storey kitchen extension to rear and flat roofed,…
14, Ardagh Crescent, Blackrock, Co. Dublin
D06B/0629Dún Laoghaire–RathdownLodged 10 Jul 2006Extension
- Granted30 m away
A single storey and dormer extension to the front and to the rear to provide for a new porch, family room,…
14, Ardagh Crescent, Blackrock, Co.Dublin
D08A/0326Dún Laoghaire–RathdownLodged 16 May 2008Extension
- Granted30 m away
For alterations and modifications to dwelling at above address. Demolish existing garage and replace with a…
26, Ardagh Crescent, Blackrock, Co. Dublin
D07B/0577Dún Laoghaire–RathdownLodged 25 Jun 2007Extension
- Granted40 m away
Permission to demolish rear Shed & rear single storey extension, internal & external alterations, construct…
16 Ardlui Park, Newtownpark Avenue, Blackrock, Co. Dublin A94 R2A8
D20B/0390Dún Laoghaire–RathdownLodged 12 Feb 2021Extension
- Refused40 m away
Demolition of existing house extension and construction of detached dormer bungalow, with associated…
18, Ardlui Park, Blackrock, Co. Dublin
D06A/0952Dún Laoghaire–RathdownLodged 6 Jul 2006New dwelling
- Granted40 m away
For a single storey and dormer extension to the front and to the rear to provide for a new porch, guest…
28, Ardagh Crescent, Blackrock, Co. Dublin
D06A/0665Dún Laoghaire–RathdownLodged 10 Aug 2006Extension
- Granted40 m away
First floor attic conversion to give 2 additional bedrooms and bathroom. Raised gable to the side,…
12, Ardagh Crescent, Blackrock, Dublin, A94X240
D24B/0018Dún Laoghaire–RathdownLodged 19 Jan 2024Extension
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
Permission is sought for extension, conversion and alteration works comprising of a new single storey…
22 Floraville Avenue, Clondalkin, Dublin 22.
SD24B/0153South DublinLodged 15 Apr 2024
- GrantedExtension
Permission is sought for — Retention of existing 9.5 sqm garage conversion as habitable space
3, Fairyhill, Newtownpark Avenue, Blackrock, Co Dublin, A94P229
D21A/0606Dún Laoghaire–RathdownLodged 30 Jun 2021
- GrantedExtension
Permission for construction of a single storey extension to the front and side with pitched roof, new dormers…
25 Ardagh Drive, Blackrock, Co Dublin A94 EW97
D18A/0072Dún Laoghaire–RathdownLodged 26 Jan 2018
- GrantedExtension
Permission is sought for the construction a new single storey extension to the rear of existing house and a…
44, Woodbine Avenue, Blackrock, Co. Dublin
D10A/0533Dún Laoghaire–RathdownLodged 24 Sept 2010
- GrantedExtension
Permission is sought for construction of new single storey extension to the rear of existing house and a new…
18, Avoca Road, Blackrock, Co. Dublin
D10A/0365Dún Laoghaire–RathdownLodged 1 Jul 2010
- GrantedExtension
Permission is sought for (a) Removal of existing single storey garage and rear kitchen, (b) Construction of…
No. 5 Kilmacud Avenue, Kilmacud, Blackrock, Co. Dublin
D22A/0381Dún Laoghaire–RathdownLodged 1 Jun 2022
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.