No. 56 Avondale Road, Killiney, Co. Dublin
Construction of two first-floor side dormer extensions to an existing house.
D21B/0260 · Dun Laoghaire Rathdown County Council · Lodged 25 May 2021
- Reference
- D21B/0260
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 25 May 2021
Summary
AI-generatedPermission is sought for two first-floor side dormer extensions of 26 sqm each (52 sqm in total) on either side of the existing roof. The extensions will provide additional first-floor bedrooms and a bathroom.
- Floor area
- 52 m²
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 2 first floor side dormer extensions of 26sqm each, 52 sqm in total, on either side of the existing house roof comprising of additional first floor bedrooms & bathroom, and a new opaque window to ground floor side w. C. With associated site and landscape 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.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 50 Avondale Rd, Killiney, Dublin | Jun 2025 | €950,000 | 42 m |
| 55 Avondale Rd, Killiney, Dublin | Feb 2025 | €900,000 | 107 m |
| St Helier, 9 Avondale Park, Killiney | Jan 2025 | €965,000 | 196 m |
| 69 Avondale Rd, Killiney, Dublin | Jun 2025 | €930,000 | 197 m |
| 59 Bellevue Road, Glenageary, Dublin | Dec 2025 | €898,000 | 202 m |
| 21 Arnold Grove, Glenageary, Dublinnot full market price | Nov 2025 | €630,000 | 203 m |
| 17 Avondale Crescent, Killiney, Dublin | May 2026 | €985,000 | 225 m |
| 22 Avondale Rd, Killiney, Dublin | Aug 2025 | €935,000 | 228 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 received25 May 2021
- Decision issued15 July 2021
- Appeal submitted11 August 2021
- Appeal decided9 December 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
Permission is sought for 2 first floor side dormer extensions of 14sqm each, 28sqm in total, on either side…
56, Avondale Road, Killiney, Co Dublin
D22B/0254Dún Laoghaire–RathdownLodged 20 May 2022Extension
- Granted30 m away
Permission is sought for new window to front of dwelling at first floor level and new rooflights to both…
60, Avondale Road, Killiney, Co. Dublin
D05B/0578Dún Laoghaire–RathdownLodged 27 Jul 2005Alterations
- Granted30 m away
Permission for extensions and alterations to existing circa 162 sqm dwelling. Permission is sought for a…
60, Avondale Road, Killiney, Co. Dublin
D16A/0826Dún Laoghaire–RathdownLodged 11 Nov 2016Extension
- Granted40 m away
Conversion of existing attic space to 3no. bedrooms, 2no. bathrooms and office comprising of modification of…
62, Avondale Road, Killiney, Co. Dublin, A96YA89
D25B/0622/WEBDún Laoghaire–RathdownLodged 5 Nov 2025Extension
- Granted50 m away
Permission is sought for the demolition of an existing garage and the construction of a new extension (75sqm)…
48, Avondale Road, Killiney, Glenageary, Dublin
D07B/0703Dún Laoghaire–RathdownLodged 31 Jul 2007Extension
- Refused50 m away
Retention of a 1.95m high, black, profiled wooden fence to the front and one side of the front garden.…
48 Avondale Road, Killiney, Co. Dublin.
D02B/0540Dún Laoghaire–RathdownLodged 10 Jul 2002Retention
- Granted50 m away
Permission is sought for the demolition of existing front porch and for an single storey extension to front…
23, Sion Road, Glenageary, Co. Dublin
D10B/0180Dún Laoghaire–RathdownLodged 20 Apr 2010Extension
- Granted60 m away
Permission for development consisting of the construction of a dormer to both sides of existing roof…
29, Sion Road, Glenageary, Co. Dublin
D16B/0216Dún Laoghaire–RathdownLodged 24 May 2016Extension
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 2 first floor side dormer extensions of 14sqm each, 28sqm in total, on either side…
56, Avondale Road, Killiney, Co Dublin
D22B/0254Dún Laoghaire–RathdownLodged 20 May 2022
- GrantedExtension
Permission for construction of two dormer extensions to the rear at first floor level to provide for…
51, Ardagh Park, Blackrock, Co Dublin
D13B/0088Dún Laoghaire–RathdownLodged 15 Mar 2013
- GrantedExtension
Permission for the construction of a first floor dormer extension over an existing ground floor extension, to…
5, Haddington Lawns, Glenageary, Co. Dublin
D14B/0386Dún Laoghaire–RathdownLodged 12 Nov 2014
- GrantedExtension
Permission is sought for construction of a two storey extension to the side and single storey extension with…
2, Sycamore Grove, Westminster Park, Dublin 18, D18 N2Y2
D18B/0462Dún Laoghaire–RathdownLodged 25 Oct 2018
- GrantedExtension
Permission is sought for construction of a dormer bungalow style extension to the front, side and rear of…
5, Sycamore Walk, Cabinteely, Dublin 18
D07B/0293Dún Laoghaire–RathdownLodged 2 Apr 2007
- InvalidExtension
Permission is sought for the construction of a two storey extension to side of the existing house. The…
8, Hyde Park Gardens, Blackrock, Co Dublin
D07B/0520Dún Laoghaire–RathdownLodged 12 Jun 2007
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