St Helens Senior N S, Portmarnock
Limetree Ave, Portmarnock, Co. Dublin, D13X326
Mixed primary school with special classes, 381 pupils (2025/26), Catholic ethos, patron Archbishop of Dublin.
4 planning applications at the school since 2014, the latest in June 2023.
Planning at the school 4 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.
- GrantedSt. Helen's Senior National School & St. Helen's Junior National Schoo
- GrantedSt Helens Senior National School & St Helens Junior National School, L
- GrantedSt. Helen's Junior National School, Martello, Portmarnock, Co. Dublin
- GrantedSt. Helens Junior National School, Martello, Portmarnock, Co. Dublin.
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 | 371 | 175 | 196 | — |
| 2025/26 | 381 | 187 | 194 | +10 |
Enrolment as returned to the Department of Education each September.
About the school
- Roll number
- 19762I
- Level
- Primary school
- Type
- Ordinary with Special Classes
- Boys, girls or mixed
- Mixed
- Ethos and patron
- Catholic ethos, patron Archbishop of Dublin
- DEIS
- No
- Teaching through Irish
- No subjects through Irish
- Address
- Limetree Ave, Portmarnock, Co. Dublin, D13X326
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 19762I).
Planning applications within 100 m of the school grounds 16 applications in the last 10 years
- Refused45 Dal Riada, Portmarnock, Co Dublin, D13V527
- Granted45 Dal Riada, Portmarnock, Co. Dublin, D13 V527
- GrantedThe Residence Portmarnock, Limetree Avenue, Portmarnock, Co. Dublin, D
- Granted24 Dal Riada, Portmarnock, Co.Dublin, D13YK73
- Granted'Clubhouse', Robswall, (Limetree Avenue), Portmarnock, Co.Dublin, D13
- GrantedSt. Helen's Senior National School & St. Helen's Junior National Schoo
- GrantedNo. 10 Limetree Avenue, Portmarnock, Co. Dublin, D13 YH24
- CommencedSt Helens Senior National School & St Helens Junior National School, L
Show 8 more
- GrantedLittle Boots Montessori, rear of no 29 Dal Riada, Portmarnock, Co Dubl
- GrantedLittle Boots Montessori, rear of no 29 Dal Riada, Portmarnock, Co Dubl
- CommencedLimetree Avenue, Portmarnock, Co Dublin
- Commenced19A Limetree Avenue, Portmarnock, Co. Dublin, D13 A6N9
- CommencedThe Clubhouse, Robswall, Portmarnock, Co Dublin, D13 WV06
- Commenced47 Dal Riada, Portmarnock, Co. Dublin.
- Granted47 Dal Riada, Portmarnock, Co. Dublin.
- CommencedSt. Helen's Junior National School, Martello, Portmarnock, Co. Dublin
Appeals within 100 m of the school grounds 2 with An Coimisiún Pleanála
Building work started within 100 m of the school grounds 6 commencement notices
- Commenced9 The Lawn, St Marnocks Bay, Portmarnock, Dublin 13, D13 P767
- CommencedSt Helens Senior National School & St Helens Junior National School, L
- CommencedLimetree Avenue, Portmarnock, Co Dublin
- Commenced19A Limetree Avenue, Portmarnock, Co. Dublin, D13 A6N9
- CommencedThe Clubhouse, Robswall, Portmarnock, Co Dublin, D13 WV06
- Commenced47 Dal Riada, Portmarnock, Co. Dublin.
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 Helens Senior N S, Portmarnock
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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