St Helens Junior N S, Portmarnock
Martello, Portmarnock, Co. Dublin, D13KP93
Mixed primary school with special classes, 319 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 | 330 | 177 | 153 | — |
| 2025/26 | 319 | 171 | 148 | -11 |
Enrolment as returned to the Department of Education each September.
About the school
- Roll number
- 19578P
- 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
- Martello, Portmarnock, Co. Dublin, D13KP93
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 19578P).
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 Junior 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.
Something wrong on this school page, or a record you want corrected or removed? Contact us and we will check it against the source.