South Dublin County Council · SD21B/0649
3 Knocklyon Avenue, Dublin 16
Approved in May 2022. Building started in 2026.
- 23 Dec 2021Received
- 6 Apr 2022Approved
- 17 May 2022Final approval
- 20 Aug 2026Building started
- Status
- Building startedi
- Decision
- Approved · 6 Apr 2022
- Council
- South Dublin County Council
- Type
- Permission
- Site
- 330 m²
What’s proposed
Alterations to existing house to include a ground floor extension to rear & side; first floor extension to side, new roof to include attic conversion with dormer windows to front & rear and associated site works
Planning details
- Reference
- SD21B/0649
- Local authority
- South Dublin County Council
- Status
- Commenced · register status “Decision Following A.I.”
- Received
- 23 Dec 2021
- Decision due
- 6 Apr 2022 · decided 6 Apr 2022
- Decision
- Grant permission on 6 Apr 2022
- Site area
- 330 m² from the mapped boundary, not the council's figure
Nearby 16 · 500 m · 12 months
Distance
Time
- Open23 Knocklyon Grove, Knocklyon, Dublin 16, D16 Y443
- Open23 Delaford Ave, Knocklyon, Dublin 16, D16K3E5
- Granted75, Idrone Park, Knocklyon, Dublin 16, D16 E7T1
- GrantedIona Pastoral Community Centre, Idrone Avenue, Dublin, D16 T299
- Awaiting decisionSDCC Lands @28 Locations
- GrantedPairc Ui Mhurchu, Firhouse Road, Dublin 16, D16 A2F8
- Granted18 Idrone Park, Knocklyon, Dublin 16, D16 PX88
- Granted2 Mount Alton Court, Knocklyon, Dublin 16, D16 HW83
Show all 16
- GrantedVista Montana, Firhouse Road, Knocklyon, Dublin 16.
- Granted9, Knocklyon Close, Knocklyon, Dublin, D16 TP94
- Granted27, Green Acre Court, Dublin 16, D16 YF53
- Granted30, Idrone Drive, Ballyroan, Dublin 16, D16 T9W7
- Awaiting decisionProposed Social and Affordable Mixed Tenure Housing Development, on SDCC land at Castlefield Avenue, Old Knocklyon Road, Dublin 16.
- Commenced16 Idrone Park, Knocklyon, Dublin 16, D16PX29
- Appeal decided15, Knocklyon Park, Templeogue, Dublin 16, D16 N1W8
- Commenced2, Knocklyon Avenue, Knocklyon, Dublin 16, D16 H3K8
- GrantedThe Beeches, Firhouse Road, Knocklyon, Dublin 16, D16N4T8
- WithdrawnThe Beeches, Firhouse Road, Knocklyon, Dublin 16, D16 N4T8
- Granted19, Idrone Drive, Dublin 16, D16X6F8
- Appeal decided32, Knocklyon Heights, Knocklyon, Dublin 16, D16P2K0
- Granted27 Green Acre Court, Dublin 16, Co. Dublin, D16YF53
- Granted65, Cremorne, Knocklyon, Dublin 16, D16 A8P3.
- Commenced5a, Knocklyon Ave, Knocklyon, DUBLIN 16
- Granted13, Green Acre Court, Knocklyon, Dublin 16, D16 VK03
- Granted32, Idrone Drive, Knocklyon, Dublin 16, D16P9T3
- Granted23, Delaford Lawn, Knocklyon, Dublin 16
- Commenced16, Delaford Dr, Knocklyon, Dublin 16, D16 K7Y3
- Granted9, Knocklyon Avenue, Templeogue, Dublin 16, D16X4CO
- Commenced15, Knocklyon Park, Templeogue, Dublin 16, D16 N1W8.
- Awaiting decisionKnocklyon to Ballyboden Active and Sustainable Travel Scheme
- GrantedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16, D16 W2V0
- OtherCastlefield Avenue, Old Knocklyon Road, Knocklyon, Dublin 16
- GrantedPairc Uí Mhurchu, Firhouse Road, Dublin 16, D16 A2F8
- GrantedHillside, Old Knocklyon Road,, Dublin 16, D16X7R8
- Commenced18, Delaford Grove, Dublin 16
- Commenced2, Greenacres Lodge, Dublin 16, D16 F642
- WithdrawnLands at Castlefield Ave, Knocklyon adj. 5 Knocklyon Rd & Mimosa, Castlefield Ave, D16
- Granted5, Knocklyon Avenue, Knocklyon, Dublin 16
- Commenced65, Cremorne, Knocklyon, Dublin 16, D16 A8P3.
- Granted81, Idrone Drive, Knocklyon, Dublin 16, D16W0C6
- Granted54, Knocklyon Green, Knocklyon, Dublin 16
- Commenced30 Idrone Drive, Knocklyon, Dublin 16.
- Withdrawn16 Knocklyon Avenue, Knocklyon, Dublin 16.
- GrantedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
- CommencedUnit 4, Pineview Business Park, Firhouse Road, Dublin 16, D16 YR22
- Withdrawn54 KNOCKLYON GREEN, DUBLIN 16
- Commenced2, Knocklyon Heights, Dublin 16
- Granted55, Westbourne Lodge, Dublin 16
- Granted1, Knocklyon Green, Knocklyon, Dublin 16
- GrantedVista Montana, Firhouse Road, Knocklyon, Dublin 16.
- Commenced5, Delaford Drive, Knocklyon, Dublin 16
- Commenced23, Knocklyon Close, Dublin, 16.
- Appeal decidedKnocklyon Road, Knocklyon, Dublin 16.
- Granted1, Knocklyon Green, Templeogue, Dublin 16
- WithdrawnKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
- Granted2, Beverly Avenue, Scholarstown Wood,, Dublin 16, D16KP52
- Awaiting decisionDodder Greenway, Firhouse Road/Butterfield Avenue
- Commenced5, Delaford Lawn, Dublin 16
- Commenced56, Knocklyon Green, Dublin 16
- GrantedPineview Business Park, Firhouse Road, Knocklyon, Dublin 16
- Granted3, Idrone Avenue, Dublin 16
- Refused23, Knocklyon Close, Knocklyon, Dublin 16.
- Commenced9, Knocklyon Avenue, Templeogue, Dublin 16, D16X4C0
- Commenced1, Knocklyon Close, Knocklyon, Dublin 16 D16KR79
- Granted54 Knocklyon Green Knocklyon Dublin 16
- Commenced7, Idrone Close, Dublin 16
- Withdrawn7, Idrone Close, Dublin 16
Homes nearby
- For sale32 Delaford Drive, Knocklyon, Dublin 16, D16 C9Y2
- For sale10 Knocklyon Park, Templeogue, Dublin 16, D16 N5H9
- For sale5 Delaford Avenue, Knocklyon, Dublin 16, D16 Y3V2
- For saleNo. 10 Vista Montana, Firhouse Road, Templeogue, Dublin 16, D16 N1W9
- For sale63 Idrone Drive, Knocklyon, Dublin 16, D16 Y8C6
- For sale12 Knockfield Manor, Knocklyon Road, Knocklyon, Dublin 16, D16 Y6E4
Development land nearby
- Permitted, not started · 100 homes granted 10 Aug 2026, expires 09 Aug 2031 — 2 Firhouse Road and Former Morton's The Firhouse Inn (0.6 km)
- Permitted, not started · 55 homes granted 02 Jun 2026, expires 02 Jun 2031 — Scholarstown House (0.9 km)
- Residential land off Knocklyon Avenue, Knocklyon Woods, Dublin 16 (0.1 km)
- Residential land off Knocklyon Park, Knocklyon Woods, Dublin 16 (0.2 km)
- Residential land off Knocklyon Park, Knocklyon Woods, Dublin 16 (0.2 km)
Building started
- 20 Aug 2026 · Builder told the council work was starting (opted out of the finish sign-off) CN0146352SD
Zoning
R2 — Existing residential
An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour's objection to an overbearing extension is usually argued under.
Where this comes from
National planning feed (NPAD), fetched 14 Oct 2026, 01:45.
Source: National Planning Application Database · fetched 14 Oct 2026, 01:45
| Source | Licence | Fetched | Link |
|---|---|---|---|
| National Planning Application Database | CC BY 4.0 | 14 Oct 2026, 01:45 | open |
Summary
SD21B/0649 is a planning application to South Dublin County Council for alterations to existing house to include a ground floor extension to rear & side; first, received on 23 Dec 2021; permission was granted on 6 Apr 2022.