17 Saint Marys Street, Dun Laoghaire, Co. Dublin, A96 K466
A 12sqm first-floor bedroom extension to the rear of the existing house.
D20B/0064 · Dun Laoghaire Rathdown County Council · Lodged 6 March 2020
- Reference
- D20B/0064
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 6 March 2020
Summary
AI-generatedThe development consists of a 12sqm first-floor bedroom extension to the rear of the existing two-storey dwelling. The new structure will be built over an existing single-storey ground-floor extension and includes a new roof skylight.
- Storeys
- 2
- Floor area
- 12 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 a 12sqm first floor level bedroom extension to the rear of the existing two storey dwelling which is to be constructed over the existing rear single storey ground floor extension and also for a new sky light at roof level and minor internal modifications.
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 24 September 2020.
Notified floor area: 12 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 18 St Marys St, Dun Laoghaire, Dublin | Jun 2025 | €475,000 | 27 m |
| 3 St Brendans Tce, Dun Laoghaire, Dublin | May 2025 | €345,000 | 29 m |
| 87 Northcote Terrace, Dun Laoghaire, Dublin | Mar 2025 | €495,000 | 42 m |
| 2 St Michaels Terrace, Dun Laoghaire, Dublin | Oct 2025 | €635,000 | 58 m |
| Fairhill House, Northcote Ave, Dun Laoghaire | Mar 2025 | €900,000 | 79 m |
| 5 York Court, York Rd, Dun Laoghaire | Mar 2026 | €885,000 | 106 m |
| 18 Vesey Place, Dun Laoghaire, Co Dublin | Dec 2025 | €1,825,000 | 122 m |
| 16 York Court, York Rd, Dunlaoighaire | Jun 2025 | €320,000 | 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 received6 March 2020
- Decision issued22 June 2020
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
Permission is sought for development at this site, consisting of a new two storey flat roofed extension with…
19, St Mary's Street, Dun Laoghaire, Co Dublin
D21B/0013Dún Laoghaire–RathdownLodged 21 Jan 2021Extension
- GrantedAt this site
Permission for demolition of single storey rear return and erection of 2 storey extension to rear of…
15, Saint Marys Street, Dun Laoghaire, Co. Dublin
D14A/0206Dún Laoghaire–RathdownLodged 11 Apr 2014Extension
- GrantedAt this site
Permission for: a) Removal of existing single storey extension to rear. b) Formation of part two storey…
21, St Mary's Street, Dun Laoghaire, Co. Dublin, A96FK22
D24B/0129Dún Laoghaire–RathdownLodged 27 Mar 2024Extension
- GrantedAt this site
For a two storey extension to rear, replacement of windows and door to front facade and internal alterations
13, Saint Mary's Street, Dun Laoghaire, Co. Dublin
D05B/0734Dún Laoghaire–RathdownLodged 11 Oct 2005Extension
- GrantedAt this site
Permission for a new flat roofed first floor extension with 2 no. roof lights above the existing single…
11 Saint Mary's Street, Dún Laoghaire, Co Dublin
D19B/0177Dún Laoghaire–RathdownLodged 4 Apr 2019Extension
- Granted30 m away
Permission sought for development of site which fronts onto St.Brendan's Terrace & at rear of 54 York Road,…
rear of 54, York Road, Dun Laoghaire, Co. Dublin
D16A/0788Dún Laoghaire–RathdownLodged 9 Feb 2017New dwelling
- Granted40 m away
Planning permission for development which will comprise of internal alterations and two storey extension…
4, St. Brendans Terrace, Dun Laoghaire, Co. Dublin
D10B/0115Dún Laoghaire–RathdownLodged 12 Mar 2010Extension
- Granted40 m away
Permission sought for demolition of existing single storey extension to the rear and the erection of a two…
5, Saint Brendan's Terrace, Dun Laoghaire, Co Dublin
D07B/0134Dún Laoghaire–RathdownLodged 16 Feb 2007Extension
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 a 12m2 first floor bedroom extension including two roof lights to rear and all associated works
4, Beech Park Grove, Foxrock, Dublin 18, D18 CD62
D21B/0532Dún Laoghaire–RathdownLodged 1 Oct 2021
- GrantedExtension
Permission for proposed rear first floor level pitched roof extension over existing flat roofed rear single…
57 Saint Fintan's Villas, Deansgrange, Co Dublin
D15B/0369Dún Laoghaire–RathdownLodged 6 Oct 2015
- GrantedExtension
Permission is sought for a new first floor bedroom rear extension (19.8 sq.m.) over existing ground floor…
Tinhalla Mews, Stillorgan Park, Stillorgan, Co Dublin, A94HK11
D21B/0328Dún Laoghaire–RathdownLodged 1 Jul 2021
- GrantedExtension
Permission for (1) Construction of a single-storey extension to the rear of the existing dwelling, (2)…
3 Park Villas , Victoria Road , Cork
2543613Cork CityLodged 31 Jan 2025
- GrantedExtension
Permission for a first floor extension to the rear over existing ground floor extension, new window to…
41 The Wood, Crinken Glen, Shankill, Dublin 18
D18B/0063Dún Laoghaire–RathdownLodged 8 Feb 2018
- GrantedExtension
Permission for development consisting of a rear extension at ground floor (12 sq.m) & first floor (12 sq.m),…
No. 58, Northbrook Avenue, Ranelagh, Dublin 6, D06 CR40
2537/20Dublin CityLodged 20 Mar 2020
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