12, Longford Terrace, Monkstown, Co. Dublin
Construction of a small observatory at roof level of a protected structure.
D18A/0839 · Dun Laoghaire Rathdown County Council · Lodged 31 August 2018
- Reference
- D18A/0839
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 31 August 2018
Summary
AI-generatedPlanning permission is sought to construct a small observatory at roof level. The works are proposed for a property that is a protected structure.
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 at a protected structure. Permission is sought to construct a small observatory at roof level.
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 |
|---|---|---|---|
| 10 Longford Terrace, Monkstown, Dublin | Aug 2025 | €4,025,000 | 20 m |
| 15a The Mews, Longford Terrace, Monkstown | Dec 2025 | €800,000 | 40 m |
| Apt 10 - Salthill, Monkstown, Blackrock | Apr 2026 | €905,000 | 103 m |
| 13 Salthill Apts, Monkstown, Co Dublin | May 2025 | €595,000 | 109 m |
| Apt 17, Salthill Apts, Monkstown | Oct 2025 | €610,000 | 109 m |
| 21 Salthill Apts, Monkstown, Dublin | Mar 2025 | €1,050,000 | 115 m |
| Apt 32 Salthill, Seapoint Ave, Blackrock | Feb 2025 | €630,000 | 148 m |
| Longford Lodge, 25 Monkstown Crescent, Monkstown Blackrock | Mar 2026 | €1,350,000 | 148 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 received31 August 2018
- Decision issued25 October 2018
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 to reinstate this Protected Structure into a single family dwelling. To upgrade the single glazing…
12 Longford Terrace, Monkstown, Co Dublin (A Protected Structure)
D18A/0722Dún Laoghaire–RathdownLodged 25 Sept 2018Alterations
- Part granted, part refusedAt this site
The development will consist of conservation-based repair works, internal alterations and the construction of…
10, Longford Terrace, Monkstown, Dublin, A94XY98 (A Protected Structure)
D26A/0068/WEBDún Laoghaire–RathdownLodged 5 Feb 2026Alterations
- Exempt — no permission neededAt this site
We are seeking clarification and exemption in relation to the rear external access steps only leading to the…
10, Longford Terrace, Monkstown, DUBLIN, A94XY98 10 (A Protected Structure)
REF9126Dún Laoghaire–RathdownLodged 19 Jun 2026Alterations
- Granted30 m away
Permission and Retention Permission is sought in connection with: alterations to windows and doors openings…
15 Longford Terrace, Monkstown, Co Dublin (A Protected Structure)
D14A/0337Dún Laoghaire–RathdownLodged 19 Sept 2014Change of use
- Granted40 m away
Permission for the following works: Alterations further to the previous grant of permission (D14A/0308).…
8 Longford Terrace, Monkstown, Co. Dublin (A Protected Structure)
D20A/0122Dún Laoghaire–RathdownLodged 17 Feb 2020Alterations
- Granted40 m away
Permission for development consisting of removal of existing lift shaft and reinstatement of habitable living…
8, Longford Terrace, Monkstown, Co. Dublin
D14A/0308Dún Laoghaire–RathdownLodged 23 May 2014Alterations
- Granted50 m away
Planning permission for change of use of part of existing retail area on the ground floor (130 sq.m) to cafe…
11A & 12A, Monkstown Crescent, Monkstown, Co. Dublin
D11A/0271Dún Laoghaire–RathdownLodged 8 Jun 2011Change of use
- Granted50 m away
Permission for development consisting of the construction of a new single storey extension with open yard and…
13A, Monkstown Crescent, Monkstown, Co. Dublin
D13A/0087Dún Laoghaire–RathdownLodged 22 Feb 2013Extension
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