40, Trimleston Gardens, Blackrock, Dublin
Garage conversion, first-floor side extension, single-storey rear extension, and widening of the front gate.
D08A/0803 · Dun Laoghaire Rathdown County Council · Lodged 11 July 2008
- Reference
- D08A/0803
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 11 July 2008
Summary
AI-generatedThe development includes converting the ground-floor garage into living space and building a first-floor extension above it. It also proposes a single-storey flat-roof rear extension with a rooflight, widening the front porch, and widening the front gate to 3.5 metres.
- Storeys
- 2
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
- Conversion of the ground floor level garage to habitable living space
- The construction of an additional storey at first floor level over the existing garage to the side of the house and the extension of the main existing pitched roof over same
- The construction of a single storey flat roof extension to the rear of the house at ground floor level with a pitched glazed roof-light
- The widening of the front porch opening
- The widening of the front gate to 3500mm width
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 |
|---|---|---|---|
| 31 Trimleston Gardens, Booterstown, Blackrock | Oct 2025 | €968,000 | 41 m |
| 46 Trimleston Gardens, Booterstown, Dublin | Jan 2025 | €1,200,000 | 46 m |
| 83 Fosterbrook, Stillorgan Rd, Mount Merrion | Apr 2026 | €1,106,000 | 57 m |
| 106 Fosterbrook, Stillorgan Road, Blackrock | Jun 2026 | €905,000 | 62 m |
| 80 Trimleston Gardens, Booterstown, Dublin | Mar 2026 | €985,000 | 98 m |
| 76 Fosterbrook, Stillorgan Rd, Dublin | Dec 2025 | €905,000 | 98 m |
| 53 Trimleston Gardens, Booterstown, Dublin | May 2025 | €1,160,000 | 104 m |
| 74 Fosterbrook, Stillorgan Rd, Stillorgan | May 2025 | €845,000 | 110 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 July 2008
- Decision issued4 September 2008
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 consisting of the removal of (i) the existing pitched roof with…
40 Trimleston Gardens, Booterstown, Blackrock, Co Dublin, A94WP63
D22B/0403Dún Laoghaire–RathdownLodged 9 Sept 2022Extension
- GrantedAt this site
For proposed garage conversion and extension at first floor with pitched roof to match existing roof. New…
42, Trimleston Gardens, Booterstown, Co. Dublin
D05B/0677Dún Laoghaire–RathdownLodged 13 Sept 2005Extension
- GrantedAt this site
Permission for a single storey flat roof extension to rear. First floor extension to side over previously…
38 Trimleston Gardens, Booterstown, Co Dublin A94 H314
D19B/0055Dún Laoghaire–RathdownLodged 5 Feb 2019Extension
- Granted30 m away
Permission is sought for development which consists of an attic conversion (gross floor area 25 sq.m) to…
86, Fosterbrook, Blackrock, Co. Dublin
D12B/0238Dún Laoghaire–RathdownLodged 17 Jul 2012Extension
- Granted30 m away
To provide for a driveway entrance
44, Trimleston Gardens, Booterstown, Co. Dublin
D05A/1232Dún Laoghaire–RathdownLodged 23 Sept 2005Alterations
- Refused40 m away
Permission sought for the construction of a 100sqm approx three bedroom, two storey detached dwelling house…
37, Trimleston Gardens, Booterstown, Co Dublin
D06A/1951Dún Laoghaire–RathdownLodged 21 Dec 2006New dwelling
- Granted40 m away
Permission is sought for widening of existing pedestrian gate to provide new driveway and vehicular entrance…
45, Trimleston Gardens, Blackrock, Co. Dublin
D12A/0492Dún Laoghaire–RathdownLodged 13 Dec 2012Alterations
- Invalid40 m away
Provision of structure to support deck, to rear of garden
32, Trimleston Gardens, Blackrock, Co. Dublin
D08B/0822Dún Laoghaire–RathdownLodged 11 Dec 2008Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
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201388KildareLodged 18 Nov 2020
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D05B/0061Dún Laoghaire–RathdownLodged 4 Feb 2005
- GrantedAlterations
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16348LimerickLodged 27 Apr 2016
- GrantedExtension
(A) Construction of single storey extension to rear with a flat roof; (B) construction of new bedroom over…
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SD07B/0592South DublinLodged 6 Jul 2007
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