23 St Thomas' Road, Mount Merrion, Blackrock, Co.Dublin, A94H778
Alterations to a house in Mount Merrion including a replacement dormer window, new side windows, and a raised rear terrace.
REF7224 · Dun Laoghaire Rathdown County Council · Lodged 9 July 2024
- Reference
- REF7224
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Section 5
- Received
- 9 July 2024
Summary
AI-generatedThe proposed works include replacing an existing dormer window structure and adding two new windows to the side gable. It also involves raising the rear terrace and perimeter walls, adding a new side storage shed, and converting a side window into a doorway.
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
Element a - replacement of existing dormer window structure element b - addition of new 2no. Windows to side gable of house element c - raising existing rear terrace & associated perimeter walls to provide safe and level access to rear element d - new storage shed to side element e - new doorway formed from existing window in side elevation
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 |
|---|---|---|---|
| 14 St Thomas Road, Mount Merrion, Blackrock | Jul 2025 | €1,750,000 | 60 m |
| 32 St Thomas Rd, Mount Merrion, Dublin | Mar 2025 | €1,900,000 | 150 m |
| 12 Foster Ave, Mt Merrion, Dublin | Oct 2025 | €1,410,000 | 158 m |
| Apartments 1-11, Fitzwilliam Court, The Rise Mount Merrion | Dec 2025 | €4,400,000 | 196 m |
| Apartment 4 Greygates, Roebuck Ave, Mount Merrionprice excludes VAT | Jan 2026 | €190,000 | 238 m |
| 5 Greygates, Stillorgan Road, Mount Merrion | Jun 2025 | €1,690,000 | 267 m |
| 33 North Avenue, Mount Merrion, Blackrock | Sept 2025 | €2,365,000 | 298 m |
| 14 Mather Rd North, Mount Merrion, Dublin | Jan 2026 | €1,845,000 | 328 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 July 2024
- Decision due2 August 2024
- Decision issued1 August 2024
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
Planning Permission is sought by the applicants for widening of existing vehicular entrance gate with 2no.…
23, St. Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94H778
D24A/0674Dún Laoghaire–RathdownLodged 30 Aug 2024Alterations
- GrantedAt this site
Second storey extension over existing single storey (reconstructed) to side, new porch to front, new sun room…
25 St. Thomas Road, Mount Merrion, Co Dublin.
D07B/0951Dún Laoghaire–RathdownLodged 26 Nov 2007Extension
- GrantedAt this site
Permission for development consisting of works to existing house in particular the demolition of detached…
21 St Thomas Road, Mount Merrion, Co Dublin
D13B/0074Dún Laoghaire–RathdownLodged 6 Mar 2013Extension
- Granted60 m away
Permission for — Demolition of a single-storey domestic store/garage building and a rear ground floor…
2 The Fosters, Fosters Avenue, Mount Merrion, Co Dublin
D15B/0206Dún Laoghaire–RathdownLodged 2 Jun 2015Extension
- Granted60 m away
The proposed development shall consist of — Alterations to existing vehicular entrance to increase in width…
3, The Foster's, Mount Merrion, Dublin, A94TK64
D26A/0035/WEBDún Laoghaire–RathdownLodged 23 Jan 2026Extension
- Granted70 m away
Redevelopment of existing 2 storey 3 bedroom semi-detached house. Works to include the demolition of existing…
14, Saint Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94 AE89
D25B/0626/WEBDún Laoghaire–RathdownLodged 6 Nov 2025Extension
- Granted70 m away
Demolition of an existing industrial premises at the Glenville Industrial Estate, No. 26 Fosters Avenue,…
Glenville Industrial Estate, No. 24, 26 & 28, Fosters Avenue, Mount Merrion, Co. Dublin
D04A/0240Dún Laoghaire–RathdownLodged 24 May 2004Housing estate
- Granted70 m away
Permission for development. The proposed development will consist of the following : Demolition of the…
24,26 28, Fosters Avenue, Mount Merrion, Blackrock, Co Dublin
D20A/0670Dún Laoghaire–RathdownLodged 19 Feb 2021Apartments
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- Awaiting decisionAlterations
Installation of dormer windows at front and rear roof level to suit revisions to internal layouts — enclosure…
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206327corkLodged 22 Oct 2020
- GrantedExtension
External elevational alterations, new terrace at first floor level with external stairs to rear garden, attic…
46, Holmwood, Cabinteely, Dublin 18
D05B/0500Dún Laoghaire–RathdownLodged 30 Jun 2005
- GrantedExtension
A) Single storey extension to front of existing dwelling. B) Dormer extension to front and back. C) Removal…
6A, Woodbine Road, Booterstown, Blackrock, Dublin, A94Y585
D24A/0149Dún Laoghaire–RathdownLodged 11 Mar 2024
- GrantedAlterations
Alterations and additions to dwelling, including: (a) The replacement of windows to the front (east)…
The Mall, Dromderrig, Kinsale,
146773corkLodged 22 Dec 2014
- GrantedExtension
Refurbishment, alteration and extension of an existing dwelling to incorporate the following elements:…
12 Delaney Park , Dublin Hill , Cork
1637171Cork CityLodged 28 Nov 2016
- GrantedExtension
(a) Construction of a single storey extension to rear of existing dwelling, (b) alterations to existing…
Main Street, Liscarroll, Mallow, Co. Cork
226597corkLodged 21 Nov 2022
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