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Planning records

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D23B/0572

Alterations to D23B/0241. A) Extended living space to rear of dwelling with flat roof and rooflight, to eliminate previously refused terrace. B) Change of material finish of 4no. dormer windows from zinc cladding to render finish, C) Change of material finish of new stairwell to side of building, from zinc cladding to render finish and slate roof to match main dwelling. D) Alterations to existing bay window to front of dwelling and all associated site works.

37, Auburn, Saint Thomas' Road, Mount Merrion, Blackrock, Dublin, A94EN83Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.0 km away
Granted13 February 2024
D23B/0241

A) Removal of existing flat-roof dormer and 2no chimneys to side and rear of existing dwelling, and b) the construction of a two-storey extension above existing lower ground floor level. c) Alterations to existing attic-floor level including new pitched-roof dormer to side, new mansard roof with dormer windows to side and rear, and rooflights. d) raise main ridgeline of roof to match existing high point, e) change of roof material finish from tiles to slates, f) external insulation to entire dwelling, and all associated site works.

Auburn, 37 Saint Thomas Road, Mount Merrion, Blackrock, Dublin, A94EN83Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.0 km away
Granted11 July 2023
D19A/0940

Retention Permission is sought for retention of alterations and additional alterations to previously granted planning permission, Dun Laoghaire County Council Reference D15A/0657, which granted permission for; Construction of a new single storey extension to the side, a new single storey extension to side and rear, and a new single storey extension to rear of the existing two storey detached house; to externally insulate and re-render the existing house; to re-roof and alter the existing windows and doors and to demolish the existing garage and construct a new garage to be part single storey, and part two storey to the rear and include a home office with associated site works which include widening the vehicular entrance gates, and providing a new pedestrian gate. The proposed alterations to this permission are: A. Reduction of 17.7 sq.m in the overall area of the proposed single storey extension to the rear, adjusted floor level, and altered fenestration to this extension; B. Reduction of 23.2 sq.m. of the area of the proposed garage. The garage is now proposed as single storey, including omission of the proposed home office, and omission of the boiler room. It is also proposed to reduce the overall height of the garage, and to use a concrete roof tile to match the existing house roof, rather than the slate roof previously proposed; C. Omission of the proposed single storey extension to the side and rear, a reduction in proposed area of 2.4 sq.m.; D. Increased footprint of the single storey side extension by 2.3 sq.m., to allow for construction build ups; E. It is now proposed to repair the existing flat roof to the rear return, rather than replacing it with a new pitched roof. This reduces the overall height of the rear return; F. It is proposed to omit the replacement render to the original existing house; G. It is proposed to relocate the outdoor terrace area at the rear of the house to the west of the site; H. Minor internal alterations to the internal layout of the house and minor alterations to windows to rear elevation; J. Alteration of surface water drainage to proposed new soakaway in rear yard.

Karinya, North Avenue, Mount Merrion, Co DublinDun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.0 km away
Granted06 February 2020
D25A/0737/WEB

New 2 storey extension to side, single storey extension to rear, conversion of attic area, with dormer window to front, re-location of vehicular access (south-east on North Avenue) internal modifications and associated site works.

Kildara, 44A Foster's Avenue, Mount Merrion, Dublin, A94W963Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted17 November 2025
D25A/0463/WEB

New 2 storey extension to side, single storey extension to rear, conversion of attic area, with dormer window to front, re-location of vehicular access (south-east on North Avenue) internal modifications and associated site works.

Kildara, 44A Foster's Avenue, Mount Merrion, Blackrock, Dublin, A94W963Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Refused01 August 2025
D23A/0741

Demolition of existing detached two-storey dwelling house. Construction of two-storey detached replacement dwelling with hipped roof, dormer roof level to rear and single storey extension with flat roof to rear. Alteration to existing boundary walls to east. Alterations to existing front boundary including the widening of the existing vehicular access and provision of new electric gates. Proposed detached garden room to rear of property. Associated hard landscaping and all ancillary works.

32, Saint Thomas Road, Mount Merrion, Dublin, A94F973Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted25 January 2024
V/090/23

1 dwelling

32, St Thomas Road, Mount Merrion, Co.Dublin, A94F973Dun Laoghaire Rathdown County CouncilCertificate of Exemption - Part V0 reasons0 conditions0.1 km away
Granted05 December 2023
D23A/0489

A corner site with frontage to North Avenue. (i) Demolition of existing 2 no. two-storey semi-detached dwellings and shed building, (ii) Construction of 1 no. four-storey over basement residential building comprising 24 no. apartments (9 no. one-bed units and 15 no. two-bed units) access to the development will be provided from Foster Avenue to the northwest and North Avenue to the east. (iii) Provision of 19 no. car parking spaces, 40 no. bicycle spaces, bin storage and plant room and (iv) Provision of landscaping works inclusive of public seating, boundary treatment, SuDS drainage and all ancillary works necessary to facilitate the development.

Tara, 44 Foster Avenue A94EV20, 44A, Kildara, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94W963Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Refused23 July 2024
D20A/0665

Permission for development to the rear

Rear and side of, 22, St. Thomas Road, Mount Merrion, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted10 November 2020
D20A/0406

Permission. The proposed development relates to the

Site at No's, 24, 26 and 28, Foster's Avenue, Mount Merrion, Blackrock, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted04 November 2020
D25A/0010/WEB

We, Naas Road Property Development Company Limited, intend to apply for planning permission for amendments to the development permitted under Reg. Ref.: D20A/0670 / ABP Ref.: 309931-21 at 24-28 Foster’s Avenue, Mount Merrion, Blackrock, Co. Dublin. The proposed amendments consists of the change of use of the permitted single storey resident’s communal amenity space (99 sq.m) to 1 no. 3 bed apartment. The proposal includes associated alterations to the elevations and the provision of private amenity space for the proposed apartment, and all associated development. The permitted development (under Reg. Ref.: D20A/0670 / ABP Ref.: 309931-21) is for 68 no. apartments, and the proposed amendments would result in an overall increase to 69 no. apartments.

24-28, Fosters Avenue, Mount Merrion, Blackrock, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted25 April 2025
D24A/0783/WEB

We, Naas Road Property Development Company Limited, intend to apply for planning permission for amendments to the development permitted under Reg. Ref.: D20A/0670 / ABP Ref.: 309931-21 at 24-28 Foster’s Avenue, Mount Merrion, Blackrock, Co. Dublin. The proposed amendments to the permitted development consists of the replacement of 3 no. 2 bed apartments at the third floor level of Block C with 2 no. 3 bed apartments. This results in a decrease in apartments in Block C from 27 no. to 26 no. apartments. The proposal includes associated alterations to the elevations and the provision of private amenity space for the proposed apartments, and all associated development. The permitted development (under Reg. Ref.: D20A/0670 / ABP Ref.: 309931-21) is for 68 no. apartments, and the proposed amendments would result in the overall decrease to 67 no. apartments.

24-28, Fosters Avenue, Mount Merrion, Blackrock, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted20 November 2024
D20A/0670

Permission for development. The proposed

24,26 28, Fosters Avenue, Mount Merrion, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted18 March 2021
D25B/0689/WEB

The conversion of the attic to a bedroom and ensuite. The works will also consist of the construction of two dormer windows, one to the rear for the bedroom and one to the side to allow for access to the attic room and a new velux window.

56, Foster Avenue, Mount Merrion, Co. Dublin, A94N292Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.1 km away
Granted09 February 2026
D24A/0674

Planning Permission is sought by Florian Maul & Karen Eustace for widening of existing vehicular entrance gate with 2no. new entrance pillars to front boundary wall of dwelling and all associated site works at No. 23 St. Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94 H778.

23, St. Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94H778Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted18 October 2024
D19A/0895

Permission to extend and alter my property, a 2 storey

2 Cypress Road, Mount Merrion, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted05 June 2020
D20A/0905

Permission for change of external

2, Cypress Road, Mount Merrion, Co DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted04 February 2021
D25B/0626/WEB

Redevelopment of existing 2 storey 3 bedroom semi-detached house. Works to include the demolition of existing single storey extension to the side and rear (33.0 Sq.m) and demolition of outbuildings. The ground floor area will be extended (58.0 Sq.m) to include new kitchen / living / dining room, utility and study as well as internal revisions to the layout; the first floor area will be extended (41.6 Sq.m) to create a fourth bedroom, en-suite and bathroom as well as internal revisions to the layout, including alterations to the front, side and rear elevations and all associated site works.

14, Saint Thomas Road, Mount Merrion, Blackrock, Co. Dublin, A94 AE89Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted23 December 2025
D22A/0127

Permission for alterations and extension to a two-storey

62 Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, A94 W868Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted13 April 2022
D21A/0673

Permission is sought for alteration/extension of an existing two storey detached house, consisting of renovation and part replacement of existing porch, existing bay window, modification to all facades and an extension and renovation of existing dormer windows. Proposed external work includes demolition of a garden wall and proposed pergola, screening to garden, a bin store, a shed and associated site and landscaping works.

7, Mather Road North, Mount Merrion, Blackrock, Co. Dublin, A94T9H6Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted08 September 2021
D25B/0341

A single storey games room shed.

64, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94E338Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted30 July 2025
D22B/0384

Permission is sought for a two storey extension to rear of the existing house to provide an additional bedroom at first floor.

1A Cypress Road, Mount Merrion, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted13 October 2022
D22A/0643

Permission for development. The development will consist of: Demolition of the existing garage to the rear. Construction of a new part single storey and part two storey extension to the side and rear of the existing dwelling including rooflights. Installation of 17.5sqm of solar PV panels on South-East facing front roof. Insulation of flat roof/canopy to front. All associated demolitions, alterations, internal layout changes, drainage and ancillary works.

18 Mather Road North, Mount Merrion, Co. Dublin., A94DK23Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted19 October 2022
D22A/0136

Permission and Retention. The Development will consist

18 Mather Road North, Mount Merrion, Co. Dublin.Dun Laoghaire Rathdown County CouncilPermission0 reasons6 conditions0.2 km away
Granted13 April 2022
D26A/0035/WEB

The proposed development shall consist of: 1) Alterations to existing vehicular entrance to increase in width to 3.5M. 2)Demolition of the existing garage and single storey garden structure to rear. 3) Alterations to the existing roof structure to increase ridge height and allow for construction of a first floor structure. 4)Single storey extension to the rear and side including for new garage and plant room. 5) All associated alterations and demolitions, site, drainage, landscaping and ancillary works.

3, The Foster's, Mount Merrion, Dublin, A94TK64Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted13 March 2026
D25A/0411/WEB

Demolition of a single-storey conservatory and a boiler house to the rear and side of the existing single-storey dwelling; Demolition of a garden shed within the property boundary; Construction of new single storey extension to the side and rear of the existing house and a garden room to the rear of the site; New widened entrance and gates to the front of the property; All associated landscaping, drainage and site development works.

6, Iris Grove, Mount Merrion, Blackrock, Co. Dublin, A94RH56Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted11 July 2025
D22A/0980

Permission for development consisting of revisions to previously approved development D20A/0962 to include reduced single storey utility and plant room to rear and new first floor ensuite and dressing room extension to east gable serving existing first floor bedroom and all associated roof and site works.

8, St Thomas Road, Mount Merrion, Blackrock, Co Dublin, A94Y598Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted09 February 2023
D20A/0962

Permission for development consisting of

8, St Thomas Road, Mount Merrion, Blackrock, Co Dublin, A94Y598Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted18 February 2021
D22B/0323

Planning permission is sought for the proposed build up of existing gable wall to meet newly extended roof ridge line and conversion of attic space with new dormer window & rooflights to rear, new single storey extension to rear, new lean-to roof over ground floor porch and living room and all associated site works

11 Mather Road North, Mount, Merrion, Co. Dublin.Dun Laoghaire Rathdown County CouncilPermission2 reasons0 conditions0.2 km away
Residential AmenityVisual Amenity
Granted01 September 2022
D22A/0517

Planning permission for the demolition of existing single storey garage and kitchen extension to the side (32.5m2), opening of new window at first floor level to existing front elevation and the construction of New 2 storey extension to side, single storey extension to rear and new front porch (total 69 m2), widening of vehicular entrance off the public road, provision of extended hardstand parking area to front and all associated works.

14 Cypress Road, Mount Merrion, Blackrock, County Dublin, A94H3N8Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted07 September 2022
D24A/0410/WEB

The development for permission will consist of:• Construction of new dormer to rear of the main house roof to facilitate a habitable attic conversion with a bedroom and a shower room;• Change of roof from hipped to gabled with extended gable wall and rooflight to rear slope;• Alteration / enlargement of existing landing window on side gable wall;• All associated demolitions / alterations, internal layout changes, drainage and ancillary works.The development for retention permission consists of:• Retention of existing widened vehicular entrance / piers to front;

22, Mather Road North, Mount Merrion, Blackrock, Co.Dublin, A94Y528Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.2 km away
Granted31 July 2024
D20B/0375

Retention permission for development at

35, North Avenue, Mount Merrion, Blackrock, Co DublinDun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.2 km away
Granted18 January 2021
D26B/0172/WEB

The development will consist of (a) Demolition works to include (i) the 5.4sqm existing single-storey side extension. (ii) the 6.5sqm existing single-storey outbuilding. (iii) removal of the west section of the existing roof to accommodate a new roof. (iv) removal of the roof to the existing rear extension to accommodate a new roof. (v) partial removal of external and internal walls to accommodate the proposed works. (b) the construction of (i) a 11.9sqm two-storey side extension to the west of the existing dwelling. (ii) a 15sqm single-storey rear extension to the south of the existing dwelling. (iii) a new roof connecting the existing and proposed rear extensions. (c) the extension of the existing roof to the west to cover the existing and proposed side extensions, to include a rooflight to the rear pitch. (d) a full refurbishment of the existing dwelling. (e) all associated site works.

12, The Close, Mount Merrion, Blackrock, Co. Dublin, A94DH57Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted07 May 2026
D26B/0069/WEB

Demolition of existing single storey rear extension and the construction of a new part single storey part two storey extension to the rear, with associated sundry works, to a two storey semi-detached house.

73, Foster's Avenue, Mount Merrion, Co. Dublin, A94HF57Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted31 March 2026
D25B/0259/WEB

Conversion of existing attic space comprising of modification of existing roof structure, rais-ing of existing gable c/w dutch hip and window, new access stairs, 2no. roof windows to the front and flat roof dormer to the rear.

11, Cypress Road, Mount Merrion, Blackrock, Dublin, A94F5C7Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.2 km away
Granted02 July 2025
D21A/0036

Permission for a domestic extension and alterations

11 The Rise, Mount Merrion, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted05 March 2021
D20B/0327

Retention permission for development consisting

Glenard, 13, The Rise, Mount Merrion, Blackrock, Co Dublin, A94AN20Dun Laoghaire Rathdown County CouncilPermission for Retention0 reasons0 conditions0.3 km away
Granted04 December 2020
D20B/0216

Permission for development. The development will consist / consists of: Planning permission is sought for an attic conversion for study and storage use, raising of gable side wall with new dormer window to rear and all associated site works.

9 The Close, Booterstown, Co. Dublin, A94 RF98Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted30 October 2020
D24A/0706/WEB

The proposed development will consist of (i) Demolition of one existing chimney (ii) Construction of a new part 2 storey, part single storey extension to the rear (iii) Conversion of the attic to a habitable space and introduction of 1 dormer window to the rear (iv) conversion of the existing garage space to a habitable space and replacement of existing garage door with a new bay window (v) Introduction of 1 velux windows and a first floor window to the side elevation (vi) Construction of a bike and bin store to the front garden (vii) widening of the existing entrance gate onto The Rise (viii) construction of a single storey garden room to the rear garden (ix) alterations to all elevations, associated landscaping and all ancillary works necessary to facilitate development.

15, The Rise, Mount Merrion, Blackrock, Dublin, A94CF74Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted31 October 2024
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 conditions0.3 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 conditions0.3 km away
Granted04 February 2021
D20A/0505

Retention Permission to retain flat roof over previously

74 Fosters Avenue, Mt. Merrion, Co. Dublin A94 V303Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted16 February 2021
D24A/0470/WEB

The provision of a new side and rear single storey extension, the provision of a new dormer to the rear elevation, revisions to the fenestration to the front side and rear elevation, alterations to the front entrance, the provision of a rear first floor extension to replace the existing balcony, the removal of an existing chimney, the widening of the existing vehicular entrance.

15, Chestnut Road, Mount Merrion, Blackrock, Dublin, A94EK46Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted22 August 2024
D25A/0189/WEB

Permission is sought for the demolition of existing conservatory to the rear and garage to the side, the construction of a ground floor extension to the rear and side (c.66.3m2), alterations to existing roofline at the rear to provide 2 no. new bedrooms with bathroom (c.38m2) at first floor level, the widening of existing vehicular gateway to 3.4m and all associated site works.

12, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94YH39Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted02 May 2025
D24A/0805/WEB

Permission is sought for changes to roof profile to enable the conversion of attic permitted under planning application ref. D24A/0468/WEB

12, Fosters Avenue, Mount Merrion, Blackrock, Dublin, A94YH39Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Refused26 November 2024
D24A/0468/WEB

Permission is sought for the demolition of the conservatory to the rear and garage to the side, the construction of a single-storey extension to the rear, provision of attic conversion at first-floor level to provide 2 no. en-suite bedrooms, the widening of existing vehicular gateway to 3.4m and all associated site works

12, Foster Avenue, Mount Merrion, Blackrock, Dublin, A94YH39Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted22 August 2024
D24A/0080

The demolition of the rear outbuilding and construction of a 2-storey extension to the side; 36sqm to the ground floor, 20sqm to first-floor. Hipped roof to match existing to first-floor extension, removal of chimney stack to the side and mono-pitched zinc roof to rear of ground floor extension.

No 7 Chestnut Road, Mount Merrion, Co. DublinDun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted03 May 2024
D20A/0458

Planning application is sought. The development will consist of: (i) demolition of the existing shed; (ii) the construction of: a two storey flat roof extension with single storey covered patio area to the rear; the two storey pitched roof extension to the side (west); the flat roof ground floor extension to the front creating porch; the dormer window at the attic floor facing rear garden (iii) the construction of a flat roof shed to the rear garden; (iv) widening of the existing vehicular entrance to 3.5m width; (v) alterations to all elevations and all associated ancillary works necessary to facilitate the development including SUDS drainage, rooflights, site works, boundary treatments and landscaping.

7 Chestnut Road, Mount Merrion, Blackrock, Co. Dublin, A94V622Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted13 October 2020
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 conditions0.3 km away
Granted21 April 2021
D23B/0533

A) demolition of existing single storey (converted) garage to side; b) construction of single storey extension to side; c) construction of part single/part two storey extension to rear; d) construction of single storey porch extension to front; e) minor alteration to existing first floor window ope to front; and, f) construction of (remote) garden room/store to rear garden, all to existing (detached) house.

78, Fosters Avenue, Mount Merrion, Dublin, A94EN26Dun Laoghaire Rathdown County CouncilPermission0 reasons0 conditions0.3 km away
Granted22 January 2024
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