11 Liffey Downs, Liffey Valley Park, Lucan, K78PK40
Retention of a prefabricated garden room used as a granny flat in Lucan.
SD26B/0018W · South Dublin County Council · Lodged 8 January 2026
- Reference
- SD26B/0018W
- Authority
- South Dublin County Council
- Register status
- Invalid or incomplete
- Type
- Retention
- Received
- 8 January 2026
Summary
AI-generatedThis application seeks planning permission for the retention of an existing 40 square metre prefabricated garden room or granny flat located in the rear garden of 11 Liffey Downs.
- Floor area
- 40 m²
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
Planning for retention of a c. 40sqm prefabricated garden room/granny flat in the rear garden
Land-use zoning
What this land is zoned for
“To protect and/or improve residential amenity”
National zoning type: Existing residential
Objective set by the South Dublin 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.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 12 Liffey Downs, Liffey Valley Park, Lucan | Mar 2025 | €400,000 | 26 m |
| 4 Liffey Downs, Liffey Valley Park, Lucan | Feb 2026 | €360,000 | 32 m |
| 2 Liffey Downs, Liffey Valley Park, Lucan | Jun 2025 | €380,000 | 34 m |
| 8 Liffey Glen, Liffeyvalley Park, Lucan | May 2025 | €405,000 | 66 m |
| 15 Liffey Place, Liffey Valley Park, Lucan | Apr 2026 | €400,000 | 79 m |
| 3 Liffey Glen, Liffey Valley Park, Lucan | Jun 2026 | €450,000 | 79 m |
| 15 Ballyowen Hall, Lucan, Dublin | Jan 2025 | €314,000 | 84 m |
| 4 Liffey Row, Lucan, Dublin | Aug 2025 | €515,000 | 100 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 received8 January 2026
- Decision due16 March 2026
- Decision issued27 January 2026
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- RefusedAt this site
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
SD26A/0024WSouth DublinLodged 27 Jan 2026Retention
- GrantedAt this site
Change of house type from 8 no. 4-bed detached J-type houses to 8 no. 4-bed detached B-type houses; minor…
Phase 4, Liffey Valley Park, Lucan, Co. Dublin.
SD02A/0168South DublinLodged 23 May 2002Alterations
- Granted30 m away
Conversion of existing attic space comprising of modification of existing roof structure; raise existing…
16, Liffey Downs, Liffey Valley Park, Lucan, Co. Dublin
SD21B/0180South DublinLodged 31 Mar 2021Extension
- Granted60 m away
Modifications to layout on roads 2,3 and 5 being part of existing permitted development at Liffey Valley Park…
Ballyowen Lane, Lucan, County Dublin,with access off Liffey Valley Avenue(under , construction),and an upgraded Ballyowen Lane.
S00A/0826South DublinLodged 30 Nov 2000Housing estate
- Granted70 m away
Additional first floor extension to front & side over existing garage to be converted to sitting room with…
1, Liffey Valley Glen, Liffey Valley Park, Lucan, Co Dublin
SD08B/0153South DublinLodged 10 Mar 2008Extension
- Granted80 m away
12 No. apartments in one four storey block consisting of 9 No. two bed units and 3 No. one bed units;…
The Bungalow, Ballyowen Lane, Lucan, Dublin
SD03A/0989South DublinLodged 22 Mar 2004Apartments
- Granted80 m away
Conversion of existing attic space comprising of modification of existing roof structure, raising of existing…
19, Liffey Place, Lucan, Dublin, K78 E129
SD24B/0061South DublinLodged 22 Feb 2024Extension
- Granted90 m away
Demolition of 'The Bungalow' and house on adjacent site formerly known as Ballinatona, Ballyowen Lane, Lucan…
'The Bungalow', Ballyowen Lane, Lucan, Co. Dublin.
SD02A/0276South DublinLodged 5 Nov 2002Apartments
Related developments
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- RefusedRetention
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
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