12 Thornberry Close, Belmont, Stepaside, Dublin 18
Construction of a single-storey rear extension and an attic conversion with a dormer window.
D21B/0215 · Dun Laoghaire Rathdown County Council · Lodged 30 April 2021
- Reference
- D21B/0215
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 30 April 2021
Summary
AI-generatedThe development consists of a single-storey ground floor extension to the rear of the house. It also includes an attic conversion featuring one rear dormer window and one front rooflight.
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. The development will consist of: a single storey ground floor extension to the rear, attic conversion with 1 no. Dormer type window to the rear of the main roof and 1 no. Velux type window to the front of the main roof.
Built & 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 |
|---|---|---|---|
| 2 Darley Lane, Belmont, Aiken'S Village | Apr 2026 | €745,000 | 37 m |
| 3 Hyde Road, Belmont, Stepaside | Jul 2025 | €805,000 | 38 m |
| 14 Hyde Road, Belmont, Stepaside | Jan 2025 | €730,000 | 65 m |
| 15 Hyde Road, Belmont Aikens Village, Stepaside | Feb 2025 | €721,500 | 68 m |
| 7 Ferncarrig Ave, Fernleigh, Sandyford | Jun 2026 | €600,000 | 124 m |
| 7 Ferncarrig Ave, Fernleigh, Sandyford | May 2026 | €300,000 | 124 m |
| 2 Verona, Kilgobbin Rd, Sandyford Dublin 18 | Jan 2026 | €560,000 | 125 m |
| 5 Greenacres, Old Kilgobbin Road, Sandyford | Jul 2025 | €715,000 | 139 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 received30 April 2021
- Decision issued2 June 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. The development will consist of: A single storey ground floor extension to the…
5 Cotter Close, Belmont, Stepaside, Dublin 18
D22B/0102Dún Laoghaire–RathdownLodged 1 Mar 2022
- WithdrawnExtension
Permission for development. The development will consist of a single storey extension to front and side of…
80, Castlebyrne Park, Blackrock, Co. Dublin
D15B/0409Dún Laoghaire–RathdownLodged 6 Nov 2015
- GrantedExtension
Permission. The proposed development will consist of a ground floor extension with 2 no. roof lights to the…
29 Trimleston Gardens, Booterstown, Blackrock, Co. Dublin
D21B/0520Dún Laoghaire–RathdownLodged 28 Sept 2021
- GrantedExtension
Permission for development at this site. The development will consist of: Attic conversion for storage with…
21, Clonlea, Woodpark, Dublin, D16T9R0
D22B/0034Dún Laoghaire–RathdownLodged 28 Jan 2022
- GrantedExtension
Permission being sought. The development will consist of the following; attic conversion with 1 no. dormer…
8 Alderman Road, Belmont, Stepaside, Dublin 18
D20B/0023Dún Laoghaire–RathdownLodged 7 Feb 2020
- GrantedExtension
Permission. The development consists of a single storey rear extension; attic conversion with roof lights to…
42, Sweetmount Avenue, Dundrum, Dublin 14
D17B/0282Dún Laoghaire–RathdownLodged 18 Aug 2017
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.