17, Thornhill Road, Mount Merrion, Dublin, A94EOW6
Demolition of a garage for a two-storey side extension, single-storey rear extension, and attic conversion.
D20B/0358 · Dun Laoghaire Rathdown County Council · Lodged 25 February 2021
- Reference
- D20B/0358
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 25 February 2021
Summary
AI-generatedThe development at 17 Thornhill Road, Mount Merrion, involves the demolition of an existing garage to build a two-storey side extension and a single-storey rear extension. It also includes a front bay window, porch overhang, and an attic conversion with a rear dormer window to create an ensuite bedroom.
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 development at this site. The development will consist of
- Demolition of existing garage
- Single storey extension to rear for dining area to existing kitchen
- Bay window to existing front living room 4.2- storey extension to side of existing house for ground floor playroom, 2no. Bedrooms to first floor and new side entrance to rear
- Overhang to front porch 6.2no. Rooflights each to front and side
- Conversion of attic as an en suite bedroom with dormer window to rea
Built & 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 2 June 2022. A completion certificate was lodged on 18 April 2023.
Notified floor area: 88.19 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 57 m |
| 28 South Ave, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 118 m |
| 32 South Ave, Mount Merrion, Dublin | Jan 2026 | €1,725,000 | 118 m |
| 24 South Ave, Mount Merrion, Dublin | Dec 2025 | €1,580,000 | 122 m |
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 141 m |
| 14 South Avenue, Mount Merrion, Co Dublin | Sept 2025 | €920,000 | 172 m |
| 71 Trees Road, Mount Merrion, Co Dublin | Aug 2025 | €1,480,000 | 208 m |
| Thornhill, Cherry Garth, Mount Merrion | Aug 2025 | €1,750,000 | 211 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 received25 February 2021
- Decision issued22 March 2021
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 development consisting of demolition of existing single storey garage to side of existing…
14, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin
D10B/0202Dún Laoghaire–RathdownLodged 30 Apr 2010
- GrantedExtension
Permission for development. the development will consist of: Demolition of existing side garage and single…
59 Bird Avenue, Clonskeagh, Dublin 14
D20A/0003Dún Laoghaire–RathdownLodged 6 Jan 2020
- GrantedExtension
Permission for development on this site. The development will consist of — Demolition of the existing single…
7, The Rise, Dalkey, Co Dublin
D22A/0338Dún Laoghaire–RathdownLodged 16 May 2022
- GrantedExtension
Permission for development at this site. The development will consist of: Demolition of existing adjoining…
102, Wyattville Park, Loughlinstown, Dublin 18
D16B/0174Dún Laoghaire–RathdownLodged 27 Apr 2016
- GrantedExtension
Permission for development. The development will consist of alteration and extension of existing dwelling as…
6, Leopardstown Oaks, Stillorgan, Co. Dublin
D21A/0494Dún Laoghaire–RathdownLodged 9 Aug 2021
- GrantedExtension
Permission for development which will consist of — Demolish existing store/balcony to rear of garage and 2…
No. 28 Ard Na Mara , Salthill , Galway
2259Galway CityLodged 16 Mar 2022
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.