39 Trees Road Lower, Mount Merrion, Blackrock, Co Dublin A94 F2N0
Demolition of a side garage and construction of a large multi-storey extension in Mount Merrion.
D18A/0210 · Dun Laoghaire Rathdown County Council · Lodged 9 March 2018
- Reference
- D18A/0210
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 9 March 2018
Summary
AI-generatedThe project involves demolishing a 30 sqm kitchen and garage to build a 274 sqm extension to the front, side, and rear of the house. The extension will be 2 storeys at the front and 3 storeys at the rear, including a half-sunken ground floor and a new detached garage.
- Storeys
- 3
- Floor area
- 274 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 demolition of the existing single storey kitchen and garage to the side of the house, area 30 sqm, the construction of an extension are 274 sqm to the front, side and rear of the existing house, 2 storeys to the front and 3 storeys to the rear, including a mezzanine within a double height, half sunken, ground floor, the construction of a single storey garage, 37 sqm to the front of the existing house, the addition of timber fencing to the top of the existing perimeter walls to ...
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 25 April 2019. A completion certificate was lodged on 15 June 2021.
Notified floor area: 432 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 43 Trees Road, Mount Merrion, Co Dublin | Nov 2025 | €1,300,000 | 33 m |
| 31 Trees Rd, Mount Merrion, Blackrock | Nov 2025 | €1,740,000 | 70 m |
| 56 Trees Rd, Mount Merrion, Blackrock | Apr 2025 | €1,285,000 | 101 m |
| 63 Thornhill Oaks, Blackrock, Co. Dublin | May 2026 | €870,000 | 113 m |
| 62 Thornhill Oaks, Blackrock, Co. Dublinprice excludes VAT | Mar 2026 | €859,031 | 119 m |
| 56 Thornhill Oaks, Mount Merrionprice excludes VAT | Mar 2025 | €775,330 | 131 m |
| 64 South Ave, Mount Merrion, Dublin | Mar 2026 | €1,390,000 | 138 m |
| 66 South Ave, Mount Merrion, Dublin | Feb 2025 | €1,255,000 | 141 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 received9 March 2018
- Decision issued26 April 2018
- Appeal submitted23 May 2018
- Appeal decided18 October 2018
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
Demolition of non-habitable rear lean to, garage/store and side chimney to semi-detached house at No. 37,…
37, Trees Road Lower, Mount Merrion, Co. Dublin
D06A/0686Dún Laoghaire–RathdownLodged 25 Apr 2006Extension
- Granted40 m away
Retention permission to previously approved planning permission reg ref D03B/0560.Retention permission sought…
2, Trees Avenue, Mount Merrion, Co. Dublin
D09A/0224Dún Laoghaire–RathdownLodged 31 Mar 2009Retention
- Refused40 m away
(1) Demolition of existing garage at no. 2 Trees Avenue (2) Construction of a two storey extension to the…
2, Trees Avenue, Mount Merrion, Blackrock, Co. Dublin
D07A/0979Dún Laoghaire–RathdownLodged 16 Jul 2007New dwelling
- Granted40 m away
Pitched roof in-lieu of flat roof to front of semi detached house
35, Trees Road Lower, Mount Merrion, Co. Dublin
D06B/0537Dún Laoghaire–RathdownLodged 16 Jun 2006Alterations
- Withdrawn40 m away
Permission is sought for the construction of a new window to the front and alterations to existing window to…
35, Trees Road Lower, Mount Merrion, Co. Dublin
D12B/0078Dún Laoghaire–RathdownLodged 6 Mar 2012Alterations
- Refused50 m away
Permission is sought for the construction of new two storey plus attic floor detached dwelling to the rear of…
The rear of No.2 and No. 4, Trees Avenue, Mount Merrion, Dublin 14
D07A/0980Dún Laoghaire–RathdownLodged 16 Jul 2007New dwelling
- Granted50 m away
Permission is sought for demolition of existing garage, partial demolition of rear wall of existing dwelling,…
4, Trees Avenue, Mount Merrion, Co. Dublin
D08A/0676Dún Laoghaire–RathdownLodged 11 Jun 2008Extension
- Granted50 m away
Permission for development consisting of demolition of existing 2 storey dwelling house and construction of…
4, Trees Avenue, Mount Merrion, Blackrock, Co. Dublin
D13A/0247Dún Laoghaire–RathdownLodged 17 May 2013New dwelling
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 demolition of single storey extension to the rear (25.4sq metres),alterations to existing 2…
11 Nutgrove Park, Dublin 14, D14HC98
D22A/0665Dún Laoghaire–RathdownLodged 6 Sept 2022
- GrantedExtension
Permission for the demolition of existing single storey extension to the rear and the subsequent construction…
62 Silchester Park, Dún Laoghaire, Co Dublin
D15A/0398Dún Laoghaire–RathdownLodged 17 Jun 2015
- GrantedExtension
Permission for (1) demolition of existing garage and associated single storey structure to the side of the…
56 Whitebarn Road, Rathfarnham, Dublin 14, D14NV63
D26B/0217/WEBDún Laoghaire–RathdownLodged 24 Mar 2026
- RefusedExtension
Permission for demolition of the existing single-storey outbuilding to the side and construction of a new…
Mandalay, Ballyman Road, Bray, Co Dublin
D16B/0194Dún Laoghaire–RathdownLodged 5 May 2016
- GrantedExtension
Permission for — Demolition of existing garage to side of house and partial demolition of kitchen and chimney…
23 Ludford Road, Ballinteer, Dublin D16 XE65
D16A/0097Dún Laoghaire–RathdownLodged 29 Apr 2016
- GrantedExtension
Permission for demolition of existing single storey glazed extension, retaining wall and steps to…
3 Brookside Terrace, Dundrum Road, Dundrum, Dublin 14
D14A/0428Dún Laoghaire–RathdownLodged 4 Jul 2014
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