Greenways, 128 Trees Road Upper, Mount Merrion, Co. Dublin, A94W8W8
Construction of a single-storey extension to the front, side, and rear of the house, including a garage conversion.
D26B/0021/WEB · Dun Laoghaire Rathdown County Council · Lodged 15 January 2026
- Reference
- D26B/0021/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 15 January 2026
Summary
AI-generatedThe development involves removing the existing porch door and incorporating the porch into the floor area. It also includes constructing a single-storey extension to the front, side, and rear of the dwelling, which will convert and extend the existing garage.
- Storey
- 1
- Floor area
- 58 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
The development will consist of removal of existing porch door and relocation of existing front door and incorporating the existing porch into the floor area of the dwelling (floor area 1.72m. Sq. ), construction of a single storey extension to front, side and rear of the dwelling consisting of the conversion of the garage, extension to front of garage and extension to rear of the dwelling (total floor area 58.28m. Sq. ) and associated site 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 |
|---|---|---|---|
| 27 Redesdale Rd, Mount Merrion, Dublin | May 2025 | €1,000,000 | 52 m |
| 13 Redesdale Rd, Mount Merrion, Dublin | Sept 2025 | €850,000 | 102 m |
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 135 m |
| 21 Cedarmount Rd, Mount Merrion, Dublin | Nov 2025 | €910,000 | 174 m |
| 71 Trees Road, Mount Merrion, Co Dublin | Aug 2025 | €1,480,000 | 181 m |
| 10 Redesdale Rd, Mount Merrion, Co Dublin | Jun 2026 | €1,220,000 | 195 m |
| 52 Cedarmount Road, Mount Merrion, Co Dublin | Nov 2025 | €1,000,000 | 221 m |
| 35 Cedarmount Rd, Mount Merrion, Blackrock | Mar 2026 | €880,000 | 225 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 received15 January 2026
- Decision due11 March 2026
- Decision issued9 March 2026
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
Conversion of existing garage and boiler room for habitable use including extensions of 5.5m2 to the rear and…
130, Trees Road Upper, Mount Merrion, Co. Dublin
D08A/0425Dún Laoghaire–RathdownLodged 16 Apr 2008Extension
- GrantedAt this site
Permission is sought for conversion to habitable use of existing garage and boiler room including the…
124, Trees Road, Mount Merrion, Co. Dublin
D18B/0210Dún Laoghaire–RathdownLodged 17 May 2018Extension
- RefusedAt this site
Demolition of existing single storey garage to side and rear together with removal of existing hip of main…
132, Trees Road Upper, Mount Merrion, Co. Dublin
D07B/1000Dún Laoghaire–RathdownLodged 14 Dec 2007Extension
- GrantedAt this site
Permission is sought for the following : Demolition of existing single storey garage to side and rear…
132, Trees Road Upper, Mount Merrion, Co. Dublin
D08A/0507Dún Laoghaire–RathdownLodged 6 May 2008Extension
- Granted30 m away
Retention of single storey pitched roof, domestic related shed in the rear garden, enlarging vehicular…
122, Trees Road Upper, Mount Merrion, Co. Dublin
D05A/0231Dún Laoghaire–RathdownLodged 25 Feb 2005Retention
- Granted30 m away
Permission for — The demolition of existing single storey extension to the east, single storey shed to the…
134 Trees Road Upper, Mount Merrion, Co Dublin
D18B/0573Dún Laoghaire–RathdownLodged 21 Dec 2018Extension
- Granted40 m away
Permission is sought for; (A) the demolition of existing garage/single storey extension to the side. (B) The…
120, Trees Road Upper, Mount Merrion, Co. Dublin
D12B/0043Dún Laoghaire–RathdownLodged 10 Feb 2012Extension
- Granted40 m away
Permission sought for attic conversion with dormer window and 2 rooflights to rear, together with attic…
25, Redesdale Road, Mount Merrion, Co. Dublin.
D17B/0276Dún Laoghaire–RathdownLodged 6 Jun 2017Extension
Related developments
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- GrantedExtension
The development will consist of the demolition of the existing entrance porch (1sqm) to be replaced with a…
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