20, Trees Road Lower, Mount Merrion, Co. Dublin
First-floor side extension, front porch canopy, and a new front dormer window.
D17B/0185 · Dun Laoghaire Rathdown County Council · Lodged 13 April 2017
- Reference
- D17B/0185
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 13 April 2017
Summary
AI-generatedPermission is sought for a 16 square meter first-floor side extension over an existing flat roof to enlarge a bedroom and add a bathroom. The works also include remodelling a ground-floor bay window, adding a front porch canopy, and installing a new front dormer window.
- Storeys
- 2
- Floor area
- 16 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
Planning permission is sought for development consisting of the following: modifications to front elevation at ground floor level including remodelling of an existing bay window to side and provision of a projecting canopy to front porch; construction of a two storey extension (of 16 sqm) to side at first floor level over an existing flat roof consisting of an enlarged existing bedroom and a new adjoining bathroom; provision of a dormer window to front to setback pitched roof to the new exten...
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 17 October 2017.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 117 The Rise, Mount Merrion, Dublin | Mar 2025 | €1,701,001 | 193 m |
| 29 Sycamore Road, Mount Merrion, Co Dublin | Sept 2025 | €1,785,000 | 200 m |
| 56 Trees Rd, Mount Merrion, Blackrock | Apr 2025 | €1,285,000 | 214 m |
| 2 Cherrygarth, Mount Merrionprice excludes VAT | Oct 2025 | €881,057 | 227 m |
| 4 Cherry Garth, Mount Merrion, Blackrock | Aug 2025 | €1,650,000 | 236 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 237 m |
| 56 Thornhill Oaks, Mount Merrionprice excludes VAT | Mar 2025 | €775,330 | 241 m |
| Auburn, Old Dublin Rd, Stillorgan | Apr 2026 | €1,455,000 | 271 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 received13 April 2017
- Decision issued2 June 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
Demolition of single storey extension, including the conservatory to the rear, the construction of a single…
20, Trees Road Lower, Mount Merrion, Co. Dublin
D10B/0159Dún Laoghaire–RathdownLodged 7 Apr 2010Extension
- GrantedAt this site
Permission for development consisting of the removal of chimney to rear roof and the provision of an extended…
20, Trees Road, Mount Merrion, Co. Dublin
D13B/0220Dún Laoghaire–RathdownLodged 21 Jun 2013Alterations
- GrantedAt this site
Permission is sought for — New Dormer window to rear of existing house
22, Trees Road Lower, Mount Merrion, Blackrock, Dublin, A94N7F4
D24B/0192Dún Laoghaire–RathdownLodged 26 Apr 2024Extension
- Part granted, part refusedAt this site
Permission for development for a proposed tiled pitched roof over the existing ground floor bay window to the…
18, Trees Road, Mount Merrion, Co. Dublin
D13B/0080Dún Laoghaire–RathdownLodged 5 Mar 2013Extension
- GrantedAt this site
Planning permission is sought for the following: demolish existing garage and construct two storey and single…
18, Trees Road, Mount Merrion, Co. Dublin
D10A/0405Dún Laoghaire–RathdownLodged 14 Jan 2011Extension
- GrantedAt this site
Permission for the demolition of existing single storey garage conversion, the construction of a single…
24 Trees Road Lower, Mount Merrion, Co Dublin
D16A/0092Dún Laoghaire–RathdownLodged 15 Feb 2016Extension
- Granted30 m away
Permission for development. The development will consist of the demolition of single storey structures to the…
14 Trees Road Lower, Mount Merrion, Blackrock, Co. Dublin, A94 C1X2
D21A/0946Dún Laoghaire–RathdownLodged 1 Nov 2021Extension
- Granted40 m away
Permission for development consisting of a new extension to the rear, 65 sqm at ground floor level and 24 sqm…
28, Trees Road, Mount Merrion, Co. Dublin
D13B/0305Dún Laoghaire–RathdownLodged 7 Nov 2013Extension
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 development consisting of new single storey extension to the rest and side and…
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D08B/0077Dún Laoghaire–RathdownLodged 11 Feb 2008
- GrantedExtension
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D16B/0214Dún Laoghaire–RathdownLodged 23 May 2016
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Permission for development which will consist of the removal of the existing single storey flat roofed…
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4367/18Dublin CityLodged 12 Nov 2018
- GrantedExtension
Permission for development. The development will consist of — Demolition of existing front porch and…
14, Booterstown Park, Booterstown, Blackrock, Co Dublin
D21A/0388Dún Laoghaire–RathdownLodged 30 Apr 2021
- GrantedExtension
Permission for development. The development consist of; First floor extension to the front elevation with new…
7, Willowfield Avenue, Goatstown, Dublin 14
D16A/0880Dún Laoghaire–RathdownLodged 25 Nov 2016
- Part granted, part refusedExtension
Planning permission sought for development comprising (a) removal of existing ground floor extension to rear…
35, Ardagh Drive, Newtown Park Avenue, Blackrock, Dublin
D06B/1053Dún Laoghaire–RathdownLodged 4 Dec 2006
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