11 Liffey Downs, Liffey Valley Park, Lucan, K78PK40
Invalid - Site NoticePlanning 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
Application received
19 Jan 2026
Decision: Invalid - Site Notice
27 Jan 2026
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
Planning Applications Nearby
What the council has granted and refused around this site is the best guide to how a similar application will fare.
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
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.
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
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.
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
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
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.
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
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
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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