39, Greenfield Road, Mount Merrion, Blackrock, Co. Dublin
Construction of a rear extension, garage conversion, loft conversion, and widening of the site entrance.
D20A/0346 · Dun Laoghaire Rathdown County Council · Lodged 11 August 2020
- Reference
- D20A/0346
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 11 August 2020
Summary
AI-generatedThe development will consist of a 122 square metre rear extension to the existing house. It also includes converting the adjoining garage into habitable space, a loft conversion with front rooflights, and widening the existing site entrance.
- Floor area
- 170 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 for development. The development will consist of
- Construction of an extension (122m²) to the rear of existing dwelling house. 2 conversion of existing adjoining garage to habitable space (23m²)
- Loft conversion including rooflights to front elevation (25m²)
- Widening of existing site entrance together with ancillary site development 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 June 2021.
Notified floor area: 288 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 45 Greenfield Rd, Mount Merrion, Dublin | Nov 2025 | €1,390,000 | 42 m |
| 49 The Rise, Mount Merrion, Blackrock | Sept 2025 | €1,305,000 | 69 m |
| 57 Wilson Road, Mount Merrion, Blackrockprice excludes VAT | Nov 2025 | €1,563,880 | 136 m |
| 18 Greenfield Road, Mount Merrion, Blackrock | Oct 2025 | €1,350,000 | 159 m |
| 58 Wilson Road, Mount Merrion, Blackrockprice excludes VAT | Mar 2026 | €1,550,660 | 162 m |
| 56 Wilson Road, Mount Merrion, Blackrockprice excludes VAT | Apr 2026 | €1,475,771 | 173 m |
| 55 Wilson Road, Mount Merrion, Blackrockprice excludes VAT | Nov 2025 | €1,585,903 | 178 m |
| 33 North Avenue, Mount Merrion, Blackrock | Sept 2025 | €2,365,000 | 201 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 received11 August 2020
- Decision issued1 September 2020
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
The construction of a new ground floor extension to the rear, and to the side at ground and first floor…
39 Greenfield Road, Mount Merrion, Blackrock, Co Dublin, A94 K7Y0
D25B/0053/WEBDún Laoghaire–RathdownLodged 31 Jan 2025Extension
- InvalidAt this site
The construction of a new ground floor extension to the rear, and to the side at ground and first floor…
39, Greenfield Road, Mount Merrion, Blackrock, Co Dublin, A94 K7Y0
D25B/0027/WEBDún Laoghaire–RathdownLodged 22 Jan 2025Extension
- Compliance submissionAt this site
Compliance with Condition No.2 of Reg Ref No.D25B/0053/WEB
39 Greenfield Road, Mount Merrion, Blackrock, Co Dublin, A94 K7Y0
D25B/0053/WEB/C1Dún Laoghaire–RathdownLodged 23 Jul 2025Other
- Granted30 m away
Two storey extension to rear of dwelling to accommodate new kitchen/dining area and family room at ground…
43, Greenfield Road, Mount Merrion, Co. Dublin
D06B/0620Dún Laoghaire–RathdownLodged 10 Jul 2006Extension
- Granted30 m away
Retention of a garden shed at the rear. (Enf. 12520)
43 Greenfield Road, Mount Merrion, Co. Dublin
D20B/0191Dún Laoghaire–RathdownLodged 1 Jul 2020Retention
- Granted50 m away
Permission for alterations and extension works to semi-detached house, including adaption of layout for…
45 The Rise, Mount Merrion, Co Dublin
D16A/0621Dún Laoghaire–RathdownLodged 9 Nov 2016Extension
- Granted50 m away
Permission for a new low profile zinc clad canopy over the front entrance door and associated site works
45 The Rise, Mount Merrion, Co Dublin
D17B/0267Dún Laoghaire–RathdownLodged 31 May 2017Alterations
- Granted60 m away
Demolition of existing single storey garage and construction of a two storey extension to the side of the…
4, Chestnut Road, Mount Merrion, Co. Dublin
D04B/0507Dún Laoghaire–RathdownLodged 25 Jun 2004Extension
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 for development. The proposed development will consist of (a) new single storey extension to rear…
81, Braemor Road, Churchtown, Dublin 14, D14E398
D21A/0067Dún Laoghaire–RathdownLodged 8 Sept 2021
- GrantedExtension
Permission. The development will consist of: Extension over existing garage and to the rear, on the first…
157 Meadow Grove, Dundrum, Dublin 16
D21B/0702Dún Laoghaire–RathdownLodged 20 Dec 2021
- GrantedExtension
Permission for development at this site. The development will consist of: (1) The provision of a new ground…
3, Auburn Road, Glenageaqry, Co Dublin, A96T6P3
D21B/0414Dún Laoghaire–RathdownLodged 10 Aug 2021
- GrantedExtension
Permission for development. Permission is sought for — The removal of the existing single storey rear return
32 Nutgrove Park, Farrenboley, Dublin 14, D14 WV81
D21A/1104Dún Laoghaire–RathdownLodged 17 Feb 2022
- GrantedExtension
Permission for development. The development will consist of: Demolition / removal of single storey extension…
80, St. Helen's Road, Booterstown, Blackrock, Co. Dublin, A94AE42
D22A/0926Dún Laoghaire–RathdownLodged 24 Nov 2022
- GrantedExtension
Permission for development on this site. The development will consist of conversion of existing garage and…
11, Weirview Drive, Stillorgan, Co. Dublin
D15A/0816Dún Laoghaire–RathdownLodged 16 Dec 2015
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