St Colmcille Senior N S, Knocklyon
Idrone Avenue, Knocklyon, Dublin 16, D16W8K0
Mixed primary school, 744 pupils (2025/26), Catholic ethos, patron Archbishop of Dublin.
13 planning applications at the school since 2001, the latest in August 2026.
Planning at the school 13 applications
Applications on the school grounds, next to the school and about a school (extensions, prefabs, classrooms, halls), or naming the school within 1.5 km. Every year on record.
- GrantedIona Pastoral Community Centre, Idrone Avenue, Dublin, D16 T299
- OpenKnocklyon to Ballyboden Active and Sustainable Travel Scheme
- GrantedSt. Colmcilles Senior National School, Knocklyon, Dublin 16
- Appeal decidedBallyboden St Enda's GAA Club, Sancta Maria College, Rathfarnham, Dublin 16
- Appeal decidedSt. Colmcilles Senior & Junior National Schools, Knocklyon, Dublin 16
- GrantedSt. Colmcilles Senior National School, Knocklyon, Dublin 16
- GrantedSt Colmcille's Junior School, Knocklyon, Dublin 16
- GrantedSt. Colmcille's Senior National School, Knocklyon, Dublin 16
- GrantedSt. Colmcille's Junior National School, Knocklyon, Dublin 16
- GrantedSt. Colmcilles National School, Knocklyon, Dublin 16
- GrantedSt. Colmcilles National Schools, The Iona Centre & Knocklyon Community Centre, , Knocklyon, Dublin 16.
- GrantedSt. Colmcilles Senior National School, Knocklyon, D.16
- GrantedSt. Colmcilles Junior National School, Knocklyon, Dublin 16.
Where it is school grounds outlined
Outline: the school grounds as mapped on OpenStreetMap. Dots: planning applications at the school.
Enrolment 2 years on record
| Year | Pupils | Girls | Boys | Change |
|---|---|---|---|---|
| 2024/25 | 757 | 359 | 398 | — |
| 2025/26 | 744 | 355 | 389 | -13 |
Enrolment as returned to the Department of Education each September.
About the school
- Roll number
- 19742C
- Level
- Primary school
- Type
- Ordinary
- Boys, girls or mixed
- Mixed
- Ethos and patron
- Catholic ethos, patron Archbishop of Dublin
- DEIS
- No
- Teaching through Irish
- No subjects through Irish
- Address
- Idrone Avenue, Knocklyon, Dublin 16, D16W8K0
Inspection reports
The Department of Education's Inspectorate publishes its reports on gov.ie. See this school's inspection reports on gov.ie (the Department's search, roll number 19742C).
Planning applications within 100 m of the school grounds 23 applications in the last 10 years
- GrantedIona Pastoral Community Centre, Idrone Avenue, Dublin, D16 T299
- Granted18 Idrone Park, Knocklyon, Dublin 16, D16 PX88
- Commenced16 Idrone Park, Knocklyon, Dublin 16, D16PX29
- OpenKnocklyon to Ballyboden Active and Sustainable Travel Scheme
- GrantedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16, D16 W2V0
- Granted25a Knockaire, Dublin 16
- GrantedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
- WithdrawnKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
Show 15 more
- Granted10, Idrone Park, Dublin 16
- Granted22, Idrone Park, Knocklyon, Dublin 16, D16YD74
- Commenced7, Idrone Close, Dublin 16
- Withdrawn7, Idrone Close, Dublin 16
- Commenced17, Idrone Close, Dublin 16
- Withdrawn10, Idrone Park, Dublin 16
- Commenced5, Idrone Close, Dublin 16
- CommencedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
- Commenced14, Idrone Close, Knocklyon, Dublin 16
- Commenced31, Idrone Park, Knocklyon Woods, Templeogue, Dublin 24
- Commenced45, Coolamber Park, Dublin 16
- Granted4, Idrone Close, Knocklyon, Dublin 16
- Commenced3, Knocklyon Grove, Knocklyon, Dublin 16
- GrantedKnocklyon Shopping Centre, Knocklyon Road, Dublin 16.
- CommencedIona Centre Parish Pastoral Centre Building, Knocklyon, Dublin 16
Appeals within 100 m of the school grounds 2 with An Coimisiún Pleanála
Building work started within 100 m of the school grounds 7 commencement notices
- Commenced16 Idrone Park, Knocklyon, Dublin 16, D16PX29
- Commenced7, Idrone Close, Dublin 16
- Commenced14, Idrone Close, Knocklyon, Dublin 16
- Commenced5, Idrone Close, Dublin 16
- Commenced31, Idrone Park, Knocklyon Woods, Templeogue, Dublin 24
- Commenced31, Idrone Park, Knocklyon Woods, Templeogue, Dublin 24
- CommencedIona Centre Parish Pastoral Centre Building, Knocklyon, Dublin 16
Source: Department of Education · fetched 27 Sept 2026 · Data on Individual Schools, 2025/26
Source: OpenStreetMap (school grounds) · fetched 27 Sept 2026
Contains data © OpenStreetMap contributors, available under the Open Database Licence (ODbL).
Planning report for St Colmcille Senior N S, Knocklyon
Every application, appeal and deadline within 500 m, with zoning and heritage, in one report.
No account, no payment. Not a statutory planning search.
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