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11 Liffey Downs, Liffey Valley Park, Lucan, K78PK40

Invalid - Site Notice

Planning application SD26B/0018W

Dublin - South Dublin County Council

Proposed Development

Planning for Retention of a c.40sqm prefabricated garden room/granny flat in the rear garden

View the full application file on the council's planning portal →

Application Timeline

  1. Application received

    19 Jan 2026

  2. Decision: Invalid - Site Notice

    27 Jan 2026

  3. Decision due

    16 Mar 2026

Application Details

Location
11 Liffey Downs, Liffey Valley Park, Lucan, K78PK40
Applicant
N/A
Application Type
Retention
Planning Authority
South Dublin County Council
Eircode
K78PK40
Site Area
400 ha
Floor Area
38 sq m

Timeline

Registration Date
19 January 2026
Status
Invalid - Site Notice
Decision
Invalid - Site Notice
Decision Date
27 January 2026

Location

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Planning Applications Nearby

What the council has granted and refused around this site is the best guide to how a similar application will fare.

1m
SD26A/0024WRefuse Permission for Retention29 Jan 2026

Retention of a c.40sqm prefabricated garden room/granny flat in the rear garden of home.

11, Liffey Downs, Liffey Valley Park, Lucan, K78 PK40

20m
SD02A/0168Granted23 May 2002

Change of house type from 8 no. 4-bed detached J-type houses to 8 no. 4-bed detached B-type houses; minor modifications to boundaries and associated site works on sites numbered 360, 379 and 418-423 of road no's. 2 and 5 respectively of application Reg. Ref. S00A/0826.

Phase 4, Liffey Valley Park, Lucan, Co. Dublin.

34m
SD21B/0180Granted31 Mar 2021

Conversion of existing attic space comprising of modification of existing roof structure; raise existing gable c/w window and 'Dutch' hip; new access stairs and 2 roof windows to the rear.

16, Liffey Downs, Liffey Valley Park, Lucan, Co. Dublin

58m
S00A/0826Granted30 Nov 2000

Modifications to layout on roads 2,3 and 5 being part of existing permitted development at Liffey Valley Park (reg ref.S00A/0278) being phase 4 of overall development to incorporate change of house type and increase in numbers from 38 no.3 and 4 bed semi detatched houses and 76 no. 2 and 3 bed apartments to 98 no.2,3 and 4 bed detatched, semi detatched, terraced houses and 24 no.2 and 3 bed apartments including associated site works, open spaces and car parking

Ballyowen Lane, Lucan, County Dublin,with access off Liffey Valley Avenue(under , construction),and an upgraded Ballyowen Lane.

75m
SD08B/0153Granted10 Mar 2008

Additional first floor extension to front & side over existing garage to be converted to sitting room with additional bedroom with bathroom to rear of garage conversion, two additional bedrooms with new main bathroom to first floor & single storey to rear consisting of new sunroom and all associated site works.

1, Liffey Valley Glen, Liffey Valley Park, Lucan, Co Dublin

83m
SD03A/0989Granted22 Mar 2004

12 No. apartments in one four storey block consisting of 9 No. two bed units and 3 No. one bed units; relocation of approved units Nos. 33 - 60; modification of basement car park and associated site works on enlarged site of approved residential development (SD02A/0276)

The Bungalow, Ballyowen Lane, Lucan, Dublin

84m
SD02A/0276Granted5 Nov 2002

Demolition of 'The Bungalow' and house on adjacent site formerly known as Ballinatona, Ballyowen Lane, Lucan and for construction of mixed residential development of 72 no. units comprising 30 no. three bed duplex houses over 30 no. two bed ground floor own door apartments and 12 no. apartments in one four storey block consisting of 9 no. two bed units and 3 no. one bed units;basement car park and associated site works.

'The Bungalow', Ballyowen Lane, Lucan, Co. Dublin.

86m
SD24B/0061Granted22 Feb 2024

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

19, Liffey Place, Lucan, Dublin, K78 E129

92m
SD24B/0527WGranted25 Nov 2024

Conversion of existing attic space comprising of modification of existing roof structure, raising of existing gable c/w window, new access stairs and flat roof dormer to the rear.

3, Liffey Road, Liffey Valley Park, Lucan, Co. Dublin

96m
SD04A/0833Grant Permission for Retention10 Nov 2004

Retention of existing bin store located adjacent to and serving No's. 2 and 32 (even) Liffey Glen being part of Phase 4 of overall development known as Liffey Valley Park. Previous Reg. Ref. S00A/0278 & S00A/0826.

Bin store located adjacent to, 2-32 (even), Liffey Glen, Liffey Valley Park, Lucan, Co. Dublin

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