Garden room or granny flat at 37 Saint Mochta’s Green, Clonsilla, Blanchardstown, D15 W5C7, Castleknock
Planning application FW26A/0292E to Fingal County Council.
Retention for garden room, gym and study to rear garden
Decision
Refused
7 September 2026
7 weeks after it was received
Key dates
20 July 2026
Application received
7 September 2026
Permission refused
Application details
- Council
- Fingal County Council
- Reference
- FW26A/0292E
- Site address
- 37 Saint Mochta’s Green, Clonsilla, Blanchardstown, D15 W5C7
- Town or area
- Castleknock
- Type of project
- Garden room or granny flat
- Site area
- 300 m²
Reasons for refusal
We do not hold the reasons for this refusal yet. Read them on the council register.
Planning something near here?
The pre-planning report checks zoning, protected structures, nature sites and every application near your address, with the decisions.
Source: National Planning Application Database and Fingal County Council, licensed under CC BY 4.0. Applicant names are never published. Request removal of this record. This page is a guide and may be out of date, so check the council portal for the latest.

