15 Thornhill Road, Mount Merrion, Co. Dublin.
Raising the roof of an existing extension, building a side extension, and adding a rear sunroom.
D02B/0436 · Dun Laoghaire Rathdown County Council · Lodged 11 June 2002
- Reference
- D02B/0436
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 11 June 2002
Summary
AI-generatedThis application proposes raising the pitched roof of the existing front extension and altering the front elevation. It also includes building a single-storey side extension with a pitched roof and a sunroom extension to the rear.
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
Raising pitched roof of existing extension to front. Alterations to front elevation including tyrolene finish. Single storey extension to side with pitched roof. Sunroom extension to rear. [location] 15 thornhill road, mount merrion, co. Dublin. [location]
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 |
|---|---|---|---|
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 52 m |
| 28 South Ave, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 109 m |
| 32 South Ave, Mount Merrion, Dublin | Jan 2026 | €1,725,000 | 110 m |
| 24 South Ave, Mount Merrion, Dublin | Dec 2025 | €1,580,000 | 113 m |
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 149 m |
| 14 South Avenue, Mount Merrion, Co Dublin | Sept 2025 | €920,000 | 164 m |
| Thornhill, Cherry Garth, Mount Merrion | Aug 2025 | €1,750,000 | 203 m |
| 71 Trees Road, Mount Merrion, Co Dublin | Aug 2025 | €1,480,000 | 209 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 June 2002
- Decision issued25 July 2002
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 existing single storey extension to front, side and rear. Construction of new single storey…
15 Thornhill Road, Mount Merrion, Co. Dublin.
D02B/0895Dún Laoghaire–RathdownLodged 4 Dec 2002Extension
- GrantedAt this site
Permission for development at this site. The development will consist of — Demolition of existing garage
17, Thornhill Road, Mount Merrion, Dublin, A94EOW6
D20B/0358Dún Laoghaire–RathdownLodged 25 Feb 2021Extension
- GrantedAt this site
Permission for development consisting of the renovation of existing two storey house; the construction of a…
17, Thornhill Road, Mount Merrion, Co. Dublin
D13A/0256Dún Laoghaire–RathdownLodged 23 May 2013Extension
- GrantedAt this site
Single storey extension to side and rear of existing residence with new porch and associated works.…
13 Thornhill Road, Mount Merrion, Co. Dublin.
D02B/0091Dún Laoghaire–RathdownLodged 1 Mar 2002Extension
- Granted40 m away
The development will consist of the demolition of the existing garage, various outhouses and the removal of…
7, Thornhill Road, Mount Merrion, Blackrock, County Dublin, A94D1WS
D21A/0635Dún Laoghaire–RathdownLodged 7 Jul 2021Extension
- Granted40 m away
Permission for development at this site. The development will consist of widening the entrance gate to front…
18, Thornhill Road, Mount Merrion, Co. Dublin
D13A/0274Dún Laoghaire–RathdownLodged 29 May 2013Alterations
- Granted50 m away
Permission for the following, including all associated site-works: a) Internal alterations at ground floor…
27 Clonmore Road, Mount Merrion, Blackrock, County Dublin (A94 C1P3)
D21A/0233Dún Laoghaire–RathdownLodged 6 Jul 2021Extension
- Granted50 m away
Permission is being sought for the demolition of the existing ground floor garage and single storey extension…
5, Thornhill Road, Mount Merrion, Co. Dublin
D09A/0672Dún Laoghaire–RathdownLodged 19 Nov 2009Extension
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
Single storey extension to side and rear of existing residence with new porch and associated works.…
13 Thornhill Road, Mount Merrion, Co. Dublin.
D02B/0091Dún Laoghaire–RathdownLodged 1 Mar 2002
- RefusedExtension
Extension to the rear and side, roof conversion and alterations to the front entrance. [LOCATION] 106 The…
106 The Rise, Mount Merrion, Co. Dublin.
D02A/0079Dún Laoghaire–RathdownLodged 8 Feb 2002
- GrantedExtension
A)Two storey extension to side, B)Single storey extension to rear C)Attic conversion to habitable room,…
5 Mount Anville Road, Mount Merrion, Co. Dublin.
D02A/0578Dún Laoghaire–RathdownLodged 20 Jun 2002
- GrantedExtension
168sqm extension to rear and side and roof conversion to 130 sqm house, and alterations to the front entrance…
106 The Rise, Mount Merrion, Co. Dublin
D02A/0419Dún Laoghaire–RathdownLodged 15 May 2002
- GrantedExtension
Single storey sun room extension to the rear, a utility, w.c. and play room to the side and the enclosure of…
19 Trees Road Lower, Mount Merrion, Co. Dublin.
D02B/0482Dún Laoghaire–RathdownLodged 21 Jun 2002
- GrantedExtension
Widening the front entrance and a single storey extension to the rear. [LOCATION] 1A Mather Road South, Mount…
1A Mather Road South, Mount Merrion, Co. Dublin.
D02A/0552Dún Laoghaire–RathdownLodged 14 Jun 2002
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