42b, Ashton Park, Monkstown, Co Dublin
Demolition of a side garage to build a two-storey extension, increasing the house from three to four bedrooms.
D20A/0875 · Dun Laoghaire Rathdown County Council · Lodged 27 November 2020
- Reference
- D20A/0875
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 27 November 2020
Summary
AI-generatedThe development involves the demolition of an existing single-storey side garage. In its place, a new two-storey extension will be built to the front, side, and rear, adding a new first-floor bedroom to make it a four-bedroom house.
- 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
Permission is sought for the demolition of an existing single-storey side garage structure and in its place the construction of a new two-storey extension to the front, side and rear, the proposed extension roof is to be part pitched roofed and part flat roofed and to incorporate a 1200mm x 1200mm rooflight, the proposed extension includes a new bedroom at first floor thereby increasing the total number of bedrooms from 3-bedrooms to 4-bedrooms, the proposed development also includes internal...
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 16 June 2022.
Notified floor area: 160 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 28 Richmond Grove, Monkstown, Dublin | Nov 2025 | €1,120,000 | 19 m |
| 35 Richmond Grove, Monkstown, Co Dublinnot full market price | Apr 2026 | €600,000 | 54 m |
| 22 Ashton Park, Monkstown, Co Dublin | Feb 2025 | €1,620,000 | 89 m |
| 44 Richmond Park, Monkstown, Dublin | May 2026 | €880,000 | 116 m |
| 47 Richmond Park, Richmond Hill, Monkstown | Jan 2026 | €636,500 | 118 m |
| 36 Richmond Park, Monkstown, Co Dublin | Mar 2026 | €590,000 | 150 m |
| 11 Brook Court, Monkstown, Dublin | Oct 2025 | €906,027 | 150 m |
| 43 Ashton Park, Monkstown, Blackrock | Jan 2026 | €1,200,000 | 158 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 received27 November 2020
- Decision issued22 January 2021
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- Withdrawn30 m away
A timber fence on top of existing side wall and part of existing front wall enclosing the garden
32, Richmond Grove, Monkstown, Blackrock, Dublin, A94CT98
D24B/0328/WEBDún Laoghaire–RathdownLodged 22 Jul 2024Retention
- Refused30 m away
Permission is sought for new railings on top of existing front and side boundary walls of house
32, Richmond Grove, Monkstown, Co Dublin
D22A/0374Dún Laoghaire–RathdownLodged 30 May 2022Alterations
- Refused30 m away
A timber fence on top of existing side wall and part of existing front wall enclosing the garden at 32…
32, Richmond Grove, Monkstown, Blackrock, Dublin, A94CT98
D24B/0334/WEBDún Laoghaire–RathdownLodged 24 Jul 2024Retention
- Granted30 m away
Permission is being sought for a first floor extension incorporating two bedrooms to side including…
41, Ashton Park, Monkstown, Co. Dublin
D17B/0246Dún Laoghaire–RathdownLodged 19 May 2017Extension
- Granted30 m away
Bedroom extension over the existing garage; new porch extension to the front and attic conversion and all…
24, Richmond Grove, Monkstown, Co. Dublin
D08A/0269Dún Laoghaire–RathdownLodged 6 Mar 2008Extension
- Granted30 m away
Permission is being sought for ground floor extension together with new windows and doors all to rear
41, Ashton Park, Monkstown, Co. Dublin
D10B/0498Dún Laoghaire–RathdownLodged 17 Dec 2010Extension
- Granted40 m away
Permission & retention permission as follows: Permission sought for proposed conversion of an existing…
40 Ashton Park, Monkstown, Co. Dublin
D21B/0466Dún Laoghaire–RathdownLodged 2 Sept 2021Extension
- Granted60 m away
Permission is sought for the retention of the conversion of an adjoining garage into a study, permission for…
33, Richmond Grove, Monkstown, Co. Dublin
D11B/0194Dún Laoghaire–RathdownLodged 7 Jun 2011Extension
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 the demolition of the existing single storey side garage and construction of new, two storey,…
22 Thornhill Road, Mount Merrion, Co Dublin
D16A/0936Dún Laoghaire–RathdownLodged 22 Mar 2017
- GrantedExtension
Permission is sought for the demolition of existing single storey garage to the side of dwelling and…
10, Saint Helen's Road, Booterstown, Co. Dublin
D12A/0171Dún Laoghaire–RathdownLodged 9 May 2012
- GrantedExtension
Permission is sought for the demolition of single storey structure to the rear and partial demolition of…
61, Braemor Road, Churchtown, Dublin 14
D11A/0464Dún Laoghaire–RathdownLodged 13 Oct 2011
- GrantedExtension
Permission is sought for works consisting of demolition of the existing single storey garage, kitchen and…
43, Braemor Road, Churchtown, Dublin 14
D12A/0178Dún Laoghaire–RathdownLodged 11 May 2012
- RefusedExtension
Permission for demolition of existing adjoining domestic garage. The addition of a two storey side extension,…
102 Wyattville Park, Loughlinstown, Dublin 18
D16B/0001Dún Laoghaire–RathdownLodged 6 Jan 2016
- GrantedExtension
Permission is sought for the demolition of part of the garage to the side, the reconstruction / conversion of…
Little Acre, Old Bray Road, Cabinteely, Co. Dublin
D12B/0185Dún Laoghaire–RathdownLodged 22 Oct 2012
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