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Planning records

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D21B/0492

Permission is sought for the proposed construction of a single storey extension and construction of a single storey and outdoor terrace to the rear of an existing dwelling. The proposed rear extension will consist of a.) A new single storey orangery b.) 2 No. lantern skylights over the proposed orangery c.) Hard landscaped outdoor terrace to the rear d.) Revised fenestration to the existing study room e.) All ancillary site works and services.

The Gables, Sycamore Crescent, Mount Merrion, Blackrock, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted11 January 2022
D24B/0088

Demolition of the existing single storey extension and the construction of a new single storey extension all to the rear of the existing two storey dwelling house, the removal of the existing canopy roof structure to the front of the dwelling house, conversion of the existing attic space, the addition of velux roof windows to the front, side and rear of the dwelling house all with associated internal and external alterations, associated site works and landscaping.

75, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94Y983Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted26 April 2024
D20B/0392

Permission is sought for modifications

75, Fosters Avenue, Mount Merrion, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted04 February 2021
D23B/0344

Construction of a two storey extension to the side and an additional rooflight to the side of the existing two storey house and all associated works.

72, Hampton Park, Saint Helen's Wood, Blackrock, Dublin, A94FP27Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted12 September 2023
D25A/0674/WEB

To remove existing shed, relocate vehicular entrance, having a width of 3.5 metres, erect a new timber fence along front and side site boundary walls to a maximum height of 2 metres. Erect a new front side and rear extension with bay window to front, new front extension and internal refurbishment on ground floor to comprise of a sitting room, family / kitchen room, 1 bedroom & en-suite, new first floor extension with dormer and apex roofs comprising of 3 bedrooms. New roof windows to rear of existing roof, new doors and windows to side elevations and all associated site works.

6, Wilson Crescent, Mount Merrion, Blackrock, Dublin, A94E4X0Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Refused23 October 2025
D25B/0355/WEB

Development consisting of a single storey side extension comprising of a new side entrance, boot room, shower and sauna including all site services, drainage and associated landscaping works.

37, Hampton Park, Saint Helen's Wood, Blackrock, Dublin, A94C958Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted11 August 2025
D23B/0128

Retention planning permission for 1) Changes to roof pitch including a south-west facing fan-light to rear ground floor extension. 2) Changing of position of rear dormer window on rearpitch. 3) Removal of 1 no. roof-light to front pitch. 4) 1 enlarged ground floor window and 1 new ground floor window to side elevation and 5) No changes to front door area and 6) All associated site works.

30, Merrion Park, Blackrock, Dublin, A94Y670Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.5 km away
Granted16 May 2023
D20A/0730

Permission is sought for a

30, Merrion Park, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted06 January 2021
D21B/0421

Permission for development to consist of the

89 The Rise, Mount Merrion, Blackrock, Co. Dublin, A94 X4E2Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted01 October 2021
D24B/0314

Removal of the existing single storey rear conservatory. The construction of a new part single, part two-storey extension to the side and rear of the existing two storey house with attic conversion and 5 associated roof lights including all internal reconfiguration and associated refurbishment works. The development will also include for the extension and refurbishment of the existing garden room to the rear and all associated site development works, drainage, hard and soft landscaping, and all other ancillary works.

36, Hampton Park, Saint Helen's Wood, Blackrock, Dublin, A94AH02Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted02 September 2024
D24A/0937/WEB

The proposed extension to the side and rear of the house consists of a part 2-storey extension to the southwest of the main house and an attic at the rear northeast, covering an area of proposed works 140.90 sq.m, Total overall house area is 284.4 sqm. Proposed internal layout modifications and alterations at both the ground and first floors. Demolition of the existing garage, widening of the existing entrance boundary wall with a new sliding gate, and Part removal of side (southeast), and rear (northeast) roof areas to facilitate the new rear extension roofs. Proposed construction of a new rear attic dormer with a flat roof at the second-floor level integrated within the existing roof space. Proposed new roof lights in the existing roof over the main stairwell and Velux roof lights. Proposed new balcony at the first floor facing Northeast elevation. The existing house's external walls are proposed to be fitted with external insulation and clad in brick slips at ground level and rendered at first-floor level. replacement of all existing windows and new entrance door. Proposed new single-storey shed of 18 sqm. All with associated site works, landscaping, and drainage connected to existing services.

8, Sycamore Crescent, Mount Merrion, Blackrock, Co. Dublin, A94H9P0Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted19 March 2025
D22A/0364

Permission for development. The development will consist of

31 Deerpark Road, Mount Merrion, County Dublin, A94 F8X8Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted19 September 2022
D23B/0319

Single storey extension to include sunroom,bedroom, home office, W/C and Gym with new roof windows.

84, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94TX23Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted21 August 2023
D23A/0600

Demolition and removal of existing temporary accomodation and the construction of a one/two-storey extension (total area 1060sqm) comprising 9 no. classrooms, 1 no. ASD unit and ancillary accomodation, a new school office, conversion of 1 no. existing classroom to special educational needs accomodation, solar voltaic panels (472 sqm) to be mounted on the roof of the existing school and the proposed extension, 32 no. additional bicycle stands providing for a total of 96 no. bicycle spaces and all associated landscaping, boundary treatments and site development works on an averall site area of.66 ha.

Scoil San Treasa The Rise, Mount Merrion, Blackrock, Dublin, A94EK75Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted22 February 2024
D23B/0422

Construction of single and two storey extension to rear, small (2.6m x 3m) frestanding garden room retreat, conversion of attic with dormer to rear and associated internal alterations.

23, Sycamore Road, Mount Merrion, Blackrock, Dublin, A94E3P2Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted17 January 2024
D20A/0542

Permisison for development consisting of ground floor

Dunsland, Greygates, Stillorgan Road, Mount Merrion, Blackrock, Co. Dublin A94D2E1Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted23 September 2020
D26A/0228/WEB

Alterations and extensions to the existing single storey, three bedroom detached dwelling that will include: Demolition of the two garden sheds and other structures to the rear; Alterations and extensions to the existing single storey, three bedroom detached dwelling to create an extended six bedroom detached dwelling, that presents as being two storey to the front, and three storey to the rear that will be facilitated by the following works: internal alterations to the existing house; removal of the roof; and elevational changes to the front, side and rear of the existing house; an additional storey plus new pitched roof with hipped roof elements, above the existing house; a new two storey, and part three storey rear extension (at lower ground, ground and 1st floor level). The ground floor extension will connect to a terrace that will sit over the lower ground floor extension and will connect via external stairs to the rear garden; Alterations to the front boundary wall that will create a new pedestrian entrance gate and widened vehicular entrance with sliding gate off Deer Park Road with an amended driveway; and All landscaping, boundary treatments, drainage, SuDS and all ancillary works required to facilitate the development.

Rossbeg, 24 Deerpark Road, Mount Merrion, Co Dublin, A94E0P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted19 May 2026
D25A/0754/WEB

Alterations and extensions to the existing house to include alterations to the front elevation, alterations to the eastern side of the house to provide a wider pedestrian side access, a first floor extension, a three storied extension to the rear of the existing house, alterations to the existing hard standing, alterations to the existing vehicular entrance, the formation of a separate pedestrian entrance in the front boundary wall and the demolition of two existing sheds, 24.6 sq.m.m.s, all works to include all associated site works.

24 Deerpark Road, Mount Merrion, Co. Dublin, A94E0P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Refused25 November 2025
D25A/0600/WEB

The demolition of the existing house, 131.4 sq.m.s, and two existing sheds, 24.6 sq.m.s, the construction of a new house, 372 sq.m.s, two storied to the front and three storied to the rear, alterations to the existing hardstanding, alterations to the existing vehicular entrance and the formation of a separate pedestrian entrance in the front boundary wall, all works to include all associated site works.

Rossbeg, 24 Deerpark Road, Mount Merrion, Blackrock, Dublin, A94E0P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Refused19 September 2025
D20A/0680

Permission is sought for removal of

The Coach House, Mount Merrion Avenue, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted19 February 2021
D22B/0058

Permission is sought for the alteration and extension

16 Sycamore Road, Mount Merrion, Blackrock, Co. Dublin, A96 N6X7Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted25 May 2022
D20A/0794

Permission for development to construct an extension

On a site of c.1.4892 ha at Belfield, Foster's Ave, Blackrock, A94 X099Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted21 April 2021
D25A/0178/WEB

The development will consist of the demolition of the existing garden room to the rear, construction of a single-storey extension to the side and rear, including an infill extension to the front side section of the existing dwelling, an attic conversion to habitable status with the provision of new pitched and hipped roofs with dormer roofs, internal reconfiguration of the ground-floor layout, widening the vehicular entrance, and all ancillary works necessary to facilitate the development.

3, Wilson Road, Mount Merrion, Blackrock, Dublin, A94D7W1Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted09 June 2025
D24B/0238/WEB

The development will consist of: Alterations to the existing roof to create a new first floor extension to front and rear of the existing dwelling including new gable. All associated alterations, demolitions, site, drainage, landscaping and ancillary works.

3, Wilson Road, Mount Merrion, Blackrock, Dublin, A94D7W1Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Refused08 July 2024
D24A/0185/WEB

The development will consist of: • Demolition of existing single storey structures to rear/side of existing dwelling. • Construction of single storey extension to side and rear of the existing dwelling. • Construction of single storey extension to front/side of existing dwelling and alterations to existing front elevation. • Widening of existing vehicular entrance to 3.5M in width. • All associated alterations, demolitions, site, drainage, landscaping and ancillary works.

3, Wilson Road, Mount Merrion, Dublin, A94 D7W1Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted08 May 2024
D22A/0272

Permission for works to existing semi-detached dwelling comprised of: construction of single storey garden room, incorporating wc, garden store and external barbeque area, to rear of rear garden; and all ancillary works; following on foot of previously granted Planning Permission Reg Ref D21A/1059

86, The Rise, Mount Merrion, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted29 July 2022
D21A/1059

Permission for a domestic extension

86, The Rise, Mount Merrion, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.5 km away
Granted01 February 2022
D19B/0500

Permission is sought for the retention of two rooflights to the Eastern side of the sloped roof of the existing house, the installation of two new rooflights to the Western side of the sloped roof and the removal of the existing two front eyebrow dormer windows to be replaced with two new dormer windows.

20, Deerpark Road, Mount Merrion, Blackrock, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted06 February 2020
D20A/0543

Permission is sought for development. The development will consist of the construction of a single storey extension to the rear of the existing property in conjunction with the construction of a dormer structure to the existing rear roof pitch with the installation of a new velux roof light to the front roof pitch.

66 Merrion Park, Merrion, Blackrock, Co. Dublin, A94 D854Dun Laoghaire Rathdown County CouncilPermission0 reasons5 conditions0.6 km away
Granted23 September 2020
D25A/0323/WEB

Demolition of existing single-storey garage to side. Demolition of existing block wall to side. Construction of new single-storey extension to rear and side with 1no. roof light. Amendments to glazing openings to rear elevation (east) to first floor and front elevation (west) to first floor and creation of new window ope to rear elevation (east) first floor. Proposed tile surround to front entry porch. Alterations to existing front boundary wall including relocation and widening of the existing vehicular access and provision of gates. Internal modifications, associated hard landscaping and all ancillary works.

5 Owenstown Park, Mount Merrion, Co. Dublin, A94XE10Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted12 June 2025
D22B/0166

Retention for development. The development consists of:

25A Deerpark Road, Mount Merrion, Blackrock, Co. Dublin, A94 H5P3Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.6 km away
Granted23 May 2022
D24B/0257/WEB

The development will consist of the addition of a dormer structure to the rear of the property to provide 14.5sqm of new attic storage space; the addition of a new Velux roof-light to the front slope of the existing pitched roof; all associated site and landscaping works; retention of a previously installed roof light on the mono pitched roof on the side elevation (east façade).

65, Merrion Park, Blackrock, Dublin, A94X279Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.6 km away
Granted22 July 2024
D21B/0065

Permission is sought for partial demolition of existing

5 Mather Road South, Mount Merrion, Blackrock, Co. Dublin, A94 C7P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted01 June 2021
D21A/0454

Pemrission is sought. The development consists of:

25 Deerpark Road, Mount Merrion, Co. Dublin, A94 D2Y2Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted22 September 2021
D22A/0792

Retention planning permission. The development to be retained consists of the erection of 1 no. banner type advertising signage measuring 3m X 1m, for a temporary period of 2 years.

Circle K Service Station, Greygates, Stillorgan Road, Blackrock, Co. Dublin, A94 H3K4Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.6 km away
Refused09 December 2022
D22A/0693

Retention planning permission. The development to be retained consists of the removal of an extractor unit from the northern elevation of the forecourt building and its erection within the existing plant area on the eastern elevation. This is to ensure compliance with condition nos. 1 and 6 of the governing planning permission ( Ref: PL06D.206663, D03A/1098).

Circle K Service Station, Greygates, Stillorgan Road, Blackrock, Co. Dublin, A94 H3K4Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.6 km away
Granted07 November 2022
D21A/0116

Permission sought for the alteration

Merrion House, Mount Merrion Avenue, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted31 March 2021
D23B/0278

The construction of a detached, flat-roof garden room to rear garden with 1no. rooflight and all associated site works.

66, Glenabbey Road, Mount Merrion, Blackrock, Dublin, A94N8P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted21 July 2023
D21A/0064

Permission is being sought for

94, The Rise, Mount Merrion, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted25 March 2021
D20A/0314

Permission for alterations and additions to an existing 2-storey semi-detached dwelling. The proposed development will comprise the demolition of an existing single storey and conservatory extension to the rear, together with the demolition of an existing 2-storey extension to the gable end of the original dwelling. The proposed works will include the construction of a new 2-storey & part single storey extension to the rear, the construction of a new single storey extension to the gable end incorporating a new side access to the rear garden, together with the conversion of the existing attic space, and modifications to the main entrance to the front elevation. The proposed works will also include the widening of the existing front entrance gates, and all ancillary site works, including connections to existing services.

94 The Rise, Mount Merrion, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons8 conditions0.6 km away
Granted15 July 2020
D25B/0008/WEB

The development will consist of: (a) demolition of existing single storey extension and outbuildings to the rear, (b) construction of new two storey extension & terrace to rear, (c) minor alterations to existing front elevation including new rooflight on front roof slope, and (d) all associated site and landscaping works to serve the development.

9, Trees Avenue, Mount Merrion, Stillorgan, Co Dublin, A94A3Y0Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted10 March 2025
D25A/0967/WEB

Demolition of the existing garage structure to the rear; - Alterations and extensions to the existing dwelling that will include a single storey extension to be connected via a single storey connecting corridor to the side / west; a two storey rear extension to be connected via a two storey connecting corridor to the rear of the existing house; as well as internal alterations to the existing house to create a new and extended two and part single storey five bedroom detached dwelling; - Elevational changes to the front, side and rear of the existing house; - 3 no. new rooflights within the existing roof, two to the front and one to the back, as well as rooflights above the two storey rear extension; - alterations to front boundary wall that will facilitate the relocation of the existing vehicular / pedestrian entrance gate to provide a new vehicular and separate pedestrian entrance gate off Callary Road; and - landscaping, bin store, bike store, boundary treatments, drainage, SuDS and all ancillary works required to facilitate the development.

Clonbeg, 92 Callary Road, Mount Merrion, Co. Dublin, A94V5W4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted12 February 2026
D25A/0149/WEB

The development will consist of: 1) demolition of the existing two-storey, five bedroom detached dwelling and detached garage; 2) construction of a replacement two-storey, five bedroom detached dwelling that includes rooflights above the ground and first floor; 3) solar panels and sedum roof at roof level; 4) alterations to front boundary wall that will facilitate the relocation of the existing vehicular / pedestrian entrance gate to provide a new vehicular and separate pedestrian entrance gate off Callary Road; and 5) landscaping, bin store, bike store, boundary treatments, drainage, SuDS and all ancillary works required to facilitate the development.

Clonbeg, 92 Callary Road, Mount Merrion, Blackrock, Dublin, A94V5W4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Refused17 April 2025
V/010/25

1 Unit

Clonbeg, 92 Callary Road, Mount Merrion, Co Dublin, A94V5W4Dun Laoghaire Rathdown County CouncilCertificate of Exemption - Part V0 reasons0 conditions0.6 km away
Granted13 March 2025
D21B/0443

Permission for conversion of attic space to non-habitable

35 Merrion Park, Booterstown, Blackrock, Co. Dublin, A94D2X2Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted08 October 2021
D22A/0125

Permission for development consisting of the following:

64 Glenabbey Road, Mount Merrion, Blackrock, Co. Dublin, A94K2F3Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted13 April 2022
D23B/0228

Demolition of garage, side/rear extension and porch screen, drop cill to existing front ground floor window, install 1no. new roof-light to existing side roof and construction of new garage to side, part single, part two storey extension to side/rear with pergola structure to rear, and all associated drainage and landscaping works.

62, Glenabbey Road, Mount Merrion, Dublin, A94K0V2Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted11 July 2023
D22A/0829

Permission for development. Development will consist of proposed modifications to an existing balustrade at the first floor terrace. This will replace the design of the previously granted planning permission for a white timber balustrade at the existing external first floor terrace (planning ref D19A/0334).

Top Floor Apartment, Owenstown House, Owenstown Park, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, A94 N6D8 (A Protected Structure)Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted15 December 2022
D21A/1118

Retention permission for development at this site

Top Floor Apartment, Owenstown Park, Fosters Avenue, Mount Merrion, Blackrock, Co Dublin, (A Protected Structure), A94N6D8Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.6 km away
Refused15 February 2022
D22A/0223

Full permission for development. The proposed development will consist of a) removal of existing porch to front, extension to rear and detached garage, and b) the construction of a two-storey extension to side and rear of existing dwelling, with rooflight to front, c) Single-storey extension to rear with rooflight, d) external insulation with new render finish to existing dwelling, e) alterations to fenestration including new bay window to front of existing dwelling, f) widening of existing vehicular entrance piers to 3.5m, g) new 2.0m high boundary wall to rear garden, and all associated site works.

66 Glenabbey Road, Mount Merrion, Blackrock, Co. Dublin, A94 N8P4Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.6 km away
Granted23 May 2022
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