25, Sydney Avenue, Blackrock, Co. Dublin
Demolition of a conservatory and construction of a new single-storey garden room extension in Blackrock.
D17A/0810 · Dun Laoghaire Rathdown County Council · Lodged 8 September 2017
- Reference
- D17A/0810
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 8 September 2017
Summary
AI-generatedThe project involves general restoration and decoration works to a two-storey house. It includes the demolition of an existing rear conservatory to build a new single-storey garden room extension with two rooflights, alongside window and door modifications.
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 general restoration and decoration works; the demolition of an existing single storey conservatory to the rear and the subsequent construction of a single storey 'garden room' extension to the rear with 2no. New rooflights; the refurbishment of existing windows and doors to front, side and rear elevations; the modification of an existing ground floor internal door opening and a first floor window to the side (south east) elevation and associated siteworks to a two s...
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 29 March 2018.
Notified floor area: 53 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 46 Frascati Park, Blackrock, Dublin | Sept 2025 | €1,584,000 | 70 m |
| 10 Green Rd, Blackrock, Dublin | Oct 2025 | €820,000 | 120 m |
| 15 Brooklawn, Mount Merrion Ave, Blackrock | Mar 2025 | €875,000 | 174 m |
| 3 Avoca Place, Blackrock, Dublin | Dec 2025 | €671,000 | 190 m |
| 2 Sydney Mews, Sydney Avenue, Blackrock | Jun 2025 | €1,300,000 | 196 m |
| 9 Avoca Place, Blackrock, Dublin | Jul 2025 | €1,250,000 | 204 m |
| 9 Anglesea Ave, Blackrock, Dublin | Nov 2025 | €1,510,000 | 209 m |
| 16 Avoca Place, Blackrock, Dublinnot full market price | Sept 2025 | €500,000 | 219 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 received8 September 2017
- Decision issued1 November 2017
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Granted30 m away
Retention permission is sought for development which consists of (a) single storey extension (7 sq.m) at rear…
Victoria Lodge & Eagle Lodge, 27-29, Sydney Avenue, Blackrock, Co. Dublin
D12A/0439Dún Laoghaire–RathdownLodged 2 Nov 2012Retention
- Granted30 m away
Permission for development consisting of alterations to the internal staircase of Eagle Lodge by raising the…
Victoria Lodge & Eagle Lodge, nos. 27 & 29 Sydney Avenue, Blackrock, Co Dublin (Protected Structures)
D14A/0159Dún Laoghaire–RathdownLodged 28 Mar 2014Alterations
- Awaiting decision40 m away
Compliance with Condition No.2b of Reg Ref No. D25A/0144/WEB
21 Sydney Lodge, Sydney Avenue, Blackrock, Dublin, A94EW74 (A Protected Structure)
D25A/0144/WEB/C2Dún Laoghaire–RathdownLodged 7 Jan 2026Other
- Awaiting decision40 m away
Compliance with Condition No.2c of Reg Ref No. D25A/0144/WEB
21 Sydney Lodge, Sydney Avenue, Blackrock, Dublin, A94EW74 (A Protected Structure)
D25A/0144/WEB/C3Dún Laoghaire–RathdownLodged 7 Jan 2026Other
- Awaiting decision40 m away
Compliance with Condition No.2a of Reg Ref No. D25A/0144/WEB
21 Sydney Lodge, Sydney Avenue, Blackrock, Dublin, A94EW74 (A Protected Structure)
D25A/0144/WEB/C1Dún Laoghaire–RathdownLodged 7 Jan 2026Other
- Invalid40 m away
The development will consist of — A two storey rear extension to include an extended master bedroom and…
Sydney Lodge, 21 Sydney Avenue, Blackrock, Dublin, A94EW74
D25A/0104/WEBDún Laoghaire–RathdownLodged 11 Feb 2025Extension
- Part granted, part refused40 m away
The development will consist of — A two storey rear extension to include an extended master bedroom and…
21 Sydney Lodge, Sydney Avenue, Blackrock, Dublin, A94EW74 (A Protected Structure)
D25A/0144/WEBDún Laoghaire–RathdownLodged 24 Feb 2025Extension
- Granted50 m away
Permission is sought for the demolition of a single storey bay window and replacement with an enlarged single…
19A, Sydney Avenue, Blackrock,Co Dublin
D18A/0716Dún Laoghaire–RathdownLodged 23 Jul 2018Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedAlterations
Permission for; removal of existing non-original conservatory extension (18.5 sqm) and construction of new…
Belmont House, The Hill, Monkstown, Co Dublin (A Protected Structure)
D15A/0376Dún Laoghaire–RathdownLodged 4 Jun 2015
- GrantedExtension
Permission for development consisting of restoration refurbishment and extension of existing two storey…
The Laurels, Torquay Road, Foxrock, Dublin 18, D18 R9K5 (A Protected Structure)
D21A/1154Dún Laoghaire–RathdownLodged 23 Dec 2021
- GrantedAlterations
Permission is sought for the following works. Demolition of non-original single-storey conservatory and…
20, Waltham Terrace, Blackrock, (A Protected Structure)
D20A/0914Dún Laoghaire–RathdownLodged 8 Dec 2020
- GrantedExtension
Permission sought for a)demolition of existing side and rear extensions; b)construction of two storey side…
45 Priory Grove, Stillorgan, Co. Dublin, A94 HE67
D23A/0564Dún Laoghaire–RathdownLodged 30 Aug 2023
- GrantedExtension
Permission is sought to demolish existing single storey conservatory to the rear of existing dwelling, to be…
Peafield Mews, Ben Inagh Park, Blackrock, Co. Dublin
D16B/0100Dún Laoghaire–RathdownLodged 15 Mar 2016
- GrantedExtension
Permission for development consisting of upgrading works to existing house to include the following —…
28 Waltham Terrace, Blackrock, Co Dublin (A Protected Structure)
D18A/0019Dún Laoghaire–RathdownLodged 14 Mar 2018
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