Living in Portmarnock, Co. Dublin: Schools, Commute & House Prices 2026
On this page
- Who lives in Portmarnock
- Getting around and commuting
- Getting around Portmarnock
- Schools in Portmarnock
- Things to do in and around Portmarnock
- Where Portmarnock is
- What it costs: house prices and rent in Portmarnock
- Before you move: planning and flood
- Recent development in Portmarnock
- Flood maps
- County context
- Common questions about living in Portmarnock
- Nearby Dublin towns
- Population and demographics
Is Portmarnock a nice place to live?
Portmarnock is home to about 3,827 households, 81% owner-occupied and 15% renting, according to Census 2022. The median sale price over the last 12 months was €727,500, versus €500,000 across the Dublin region, and the median rent is €2,315 a month. The Department of Education dataset lists 2 schools keyed to the town (1 primary, 1 post-primary), and there are 129 visitor attractions within 10 km. The nearest rail station is Portmarnock, 0.1 km away, and 13 bus and rail routes serve the town. The sections below break each of these down.
Portmarnock is a town in Co. Dublin, about 17 minutes from Dublin city centre by car and on the rail line, 2 schools, 80.9% of households own their home. Living here costs a median €727,500 to buy or €2,315 a month to rent (RTB Q4 2025) (a 3.8% gross yield).
Official CSO, Department of Education, Transport for Ireland, PPR & RTB data · 112 sales · PPR sales to Aug 2026 · CSO benchmark to May 2026 · rents Q4 2025 (RTB)
Who lives in Portmarnock: 80.9% own their home, full Census breakdown
Who lives in Portmarnock
10,750 people live in Portmarnock on Census 2022 night. 81% of households own their home and 15% rent, so Portmarnock leans towards owner occupiers. The most common way to commute is by car (50%). 21% are under 15 and 21% are aged 65 and over. 57% of those who have finished education hold a third level qualification.
| Measure | Figure |
|---|---|
| Population (2022) | 10,750 |
| Owner-occupied households | 81% |
| Rented households | 15% |
| Aged under 15 | 21% |
| Aged 25 to 44 | 27% |
| Aged 65 and over | 21% |
| Third level or higher | 57% |
| At work (aged 15+) | 56% |
| Unemployment rate | 3% |
| Commute by car | 50% |
| Commute by public transport | 23% |
| Commute on foot or bike | 24% |
Source: CSO Census 2022 Small Area Population Statistics for the Portmarnock built-up area, CC-BY 4.0.
Getting around and commuting
Nearest train station: Portmarnock (in the town), on the DART line
Public transport serving Portmarnock: Rail + bus
Getting around Portmarnock
Portmarnock is served by 4 public-transport operators running 13 scheduled routes. Operators are Bus Átha Cliath – Dublin Bus, Go-Ahead Ireland, Iarnród Éireann / Irish Rail and Nitelink, Dublin Bus.
| Operator | Mode |
|---|---|
| Bus Átha Cliath – Dublin Bus | Bus / coach |
| Go-Ahead Ireland | Bus / coach |
| Iarnród Éireann / Irish Rail | Rail |
| Nitelink, Dublin Bus | Bus / coach |
Scheduled routes
- 42 - Sand's Hotel Portmarnock - Eden Quay
- H2 - Malahide - Lower Abbey Street
- 102 - Dublin Airport - Sutton DART
- 142 - Portmarnock - UCD (Belfield)
- 32X - UCD Belfield - Malahide
- 42n - Dublin City South, D'Olier Street - Portmarnock, Strand Road (St.Anne's Estate)
- 102A - Swords - Sutton
- 102C - Balgriffin - Sutton
- 102P - Swords - Portmarnock
- 102T - Swords - Sutton
- DART - Bray - Howth
- rail - Dublin - Drogheda/Dundalk
- rail - Dublin - Europort
Source: Transport for Ireland GTFS_All feed (NTA), CC-BY 4.0. Stops matched to the town within a 6 km radius; route list capped.
Schools in Portmarnock
There are 1 primary and 1 post-primary schools in and around Portmarnock.
| School | Level | Pupils | DEIS |
|---|---|---|---|
| Portmarnock Community School | Post-primary | 960 | |
| Scoil Naomh Mearnog | Primary | 638 |
Source: Department of Education, Data on Individual Schools. CC-BY 4.0.
Things to do in and around Portmarnock
- Heritage nearby: Casino Marino, Dublin City (7 km) · St. Mary's Abbey Abbey, Dublin City (11 km) · St. Audoens Church, Dublin City (12 km) · Lusk (12 km)
- Walking trails in County Dublin: Wicklow Way · Barnaslingan - Pine loop trail (Blue) · Barnaslingan - Scalp Lookout Trail (Red) · Carrickgollogan - Lead Mines Way - (Orange)
- Nature reserves: Wicklow Mountains National Park · North Bull Island Nature Reserve · Rogerstown Estuary Nature Reserve
Where Portmarnock is
Map © OpenStreetMap contributors
What it costs: house prices and rent in Portmarnock
| Measure | Value |
|---|---|
| Median sale price (12 mo) | €727,500 (-0.6% YoY) |
| Average monthly rent (Q4 2025) | €2,315 |
| Gross rental yield | 3.8% |
| Net yield (est.) | 3.0% |
| Dublin county median | €500k |
| New build / second-hand | €860,001 / €605,000 |
What this means: New builds in Portmarnock sell at about a 42% premium to second-hand homes (€860,001 vs €605,000).
Recent sales in Portmarnock
| Date | Address | Type | Price |
|---|---|---|---|
| 07 Aug 26 | 48 THE FAIRWAYS, SEABROOK MANOR, PORTMARNOCK | Second-hand | €451,270 |
| 24 Jul 26 | APARTMENT 34, COMERFORDS CROSS, PORTMARNOCK | Second-hand | €730,000 |
| 23 Jul 26 | 15 SKYLARK PARK DRIVE, ST MARNOCK'S BAY, PORTMARNOCK | New | €784,141 |
| 13 Jul 26 | 47 MILLFIELD, THE LINKS, PORTMARNOCK | Second-hand | €330,000 |
| 07 Jul 26 | 79 GREENVIEW, SEABROOK MANOR, PORTMARNOCK | Second-hand | €452,500 |
| 06 Jul 26 | 17 THE QUARRY, UPPER CARRICKHILL RD, PORTMARNOCK | Second-hand | €425,000 |
| 03 Jul 26 | 21 THE KILNS, PORTMARNOCK, DUBLIN | Second-hand | €360,000 |
| 03 Jul 26 | 27 COMERFORDS CROSS, PORTMARNOCK, DUBLIN | Second-hand | €490,000 |
Actual sale prices from the Property Price Register, verifiable at propertypriceregister.ie.
Portmarnock median price, year by year
| Year | Median | Relative | Sales |
|---|---|---|---|
| 2023 | €643,916 | 130 sales | |
| 2024 | €675,000 | 134 sales | |
| 2025 | €727,500 | 146 sales | |
| 2026 | €723,000 | 58 sales |
Average rent by size (Q4 2025)
| 1-bed | 2-bed | 3-bed | 4+ bed |
|---|---|---|---|
| — | €2,025 | — | — |
Maximum legal rent increase in Portmarnock
Since 1 March 2026 a rent review is capped at the lower of 2% a year (pro rata) or CPI inflation.
The full March 2026 rent review rules
Portmarnock compared with County Dublin
| County | Median | Relative |
|---|---|---|
| Portmarnock | 727500 | |
| County Dublin median | 500000 |
Rent or buy in Portmarnock?
At a glance: €727,500 to buy versus €2,315 a month to rent (RTB Q4 2025), a 3.8% gross yield.
Local Property Tax in Portmarnock
The median home (€727,500) falls in LPT Band 6, a base charge of €618 a year before Dublin County Council's local adjustment factor. Use the calculator for your exact valuation.
Renting in Portmarnock: the March 2026 rent rules
Every rent increase is now capped at the lesser of 2% a year (pro rata) or CPI inflation, nationwide since 1 March 2026. A review needs 90 days' notice on the RTB form, no more than one in any 12 months, and the notice must cite three comparable homes from the RTB Rent Register. Check any rent increase against the legal cap, or see average rents for every Leinster town.
Before you move: planning and flood
Recent development in Portmarnock
In the 12 months to August 2026, 39 planning grants were recorded in and around Portmarnock.
| Decided | Development | Homes |
|---|---|---|
| 2026-08-04 | The development will consist of construction of a new two storey detac | |
| 2026-07-29 | Planning Permission for attic conversion for storage dormer window to | |
| 2026-07-09 | The development will consist of the following: (a) The conversion of t | |
| 2026-07-08 | Conversion of existing attic space comprising of modification of exist | |
| 2026-07-08 | Planning permission is sought for 1) |
Source: Irish Planning Applications, Department of Housing, Local Government and Heritage (ArcGIS, CC-BY 4.0). Granted applications keyed to the nearest town within 7 km. Homes column shows residential units in the application where recorded.
Flood maps
For the modelled fluvial, coastal and pluvial flood extents around Portmarnock, open the official OPW flood maps, the authoritative source for Portmarnock, Dublin.
View the official OPW flood maps for Portmarnock →
Source: Office of Public Works, floodinfo.ie. No OPW flood-extent values are reproduced here.
County context
| Measure | Figure |
|---|---|
| Population (2022 Census) | 1,458,154 |
| Population change 2016 to 2022 | +8.2% |
| Disposable income per person (index, State = 100) | 116.6 |
| New dwelling permissions (Dublin region, 2017) | 848 thousand m² |
Planning permissions are reported at NUTS3 region level; counties in this region share a figure.
Sources: CSO F1001, CIA02, BHQ09. CC-BY 4.0.
Nearby Dublin towns
Dartry · Mount Merrion · Sandycove · Rathgar · Rathmines · Dalkey
All Dublin house prices · All Leinster house prices
Sources: CSO Census 2022, Department of Education, Transport for Ireland, Property Price Register (PSRA), CSO RPPI, RTB via CSO. CC-BY. Figures verifiable at the official source.
Common questions about living in Portmarnock
What's it like to live in Portmarnock?
Portmarnock is a town in Co. Dublin, about 17 minutes from Dublin city centre by car and on the rail line, 2 schools, 80.9% of households own their home (CSO Census 2022, Department of Education, Transport for Ireland).
How much does it cost to live in Portmarnock?
A home in Portmarnock costs a median €727,500 to buy or €2,315 a month to rent (RTB Q4 2025), a 3.8% gross yield (Property Price Register, RTB via CSO).
How long is the commute from Portmarnock to Dublin?
About 17 minutes to Dublin city centre by car and on the rail line (OpenStreetMap routing).
What schools are in Portmarnock?
Schools in Portmarnock include Portmarnock Community School, Scoil Naomh Mearnog, among 1 primary and 1 post-primary in total (Department of Education, 2024/25).
What is the population of Portmarnock?
Portmarnock had a population of 10,750 at the 2022 Census (CSO).
Population and demographics
Portmarnock had a population of 10,750 at the 2022 Census.
| Population (2022 Census) | 10,750 |
|---|---|
| Households | 3,827 |
| Owner-occupied homes | 81% |
| Rented homes | 15% |
Source: CSO Census 2022 (CC BY 4.0). Household tenure from the same release.
Shortlist is full (max 3 towns). View your shortlist to remove a town first.
Median of open-market sales each year (Property Price Register). Latest year is partial.
Could a home in Portmarnock pay as a buy-to-let?
Pre-filled with Portmarnock's median price and average rent (RTB Q4 2025). Change any figure and it recalculates instantly.
Illustrative. Assumes ~18% of rent for management, insurance and voids; 25-year mortgage on the borrowed share; ~4% acquisition costs. Not financial advice.
What can you afford to buy in Portmarnock?
Pre-filled with Portmarnock's median price. Adjust the income and deposit and it recalculates instantly.
Central Bank of Ireland mortgage measures (since Jan 2023): first-time buyers can borrow up to 4x gross income, movers and second or subsequent buyers up to 3.5x, both with a minimum 10% deposit. Figures are illustrative, not financial advice.
Stamp duty on a Portmarnock property
Pre-filled with Portmarnock's median price. Change the purchase price and see your stamp duty and total cost instantly.
Irish residential stamp duty (rates in force since 2 October 2024): 1% on the first €1,000,000; 2% from €1,000,000 to €1,500,000; 6% on any amount above €1,500,000. Figures are illustrative, not legal or financial advice.
Local Property Tax for a Portmarnock home
Pre-filled with Portmarnock's median price. Uses the 2026 Revenue valuation bands (valuation date: 1 November 2025).
Revenue LPT 2026-2030 band table (source: revenue.ie). Your local authority can vary the base charge by up to 15%. Figures are illustrative; verify at Revenue's LPT reckoner for your exact property.
Rent cap calculator for Portmarnock
Pre-filled with Portmarnock's median rent. From 1 March 2026 all private tenancies in Ireland are covered by national rent control: the annual increase is capped at 2% or CPI inflation, whichever is lower.
Residential Tenancies (Amendment) Act 2025; national rent control from 1 March 2026 (source: rtb.ie). Figures are illustrative, not legal advice.
What a month in Portmarnock costs
Real figures for Portmarnock: RTB average rent and an ownership estimate built on the median sale price. Adjust the mortgage rate and deposit and it recalculates instantly.
Average rent by size: 2 bed €2,025
Rent: RTB average monthly rents (RIQ02), Q4 2025. Ownership: repayment mortgage on Portmarnock's median Property Price Register sale price over 30 years, plus Revenue's 2026 LPT band charge divided by 12. Excludes utilities, insurance, management fees and council LPT adjustments. Illustrative, not financial advice.
See the full Portmarnock house prices page: median, year trend, rents by bedroom, yields and recent sales.
Visiting first? Things to do in Portmarnock covers attractions, heritage sites and walks nearby.
Weighing it against somewhere else? See Portmarnock vs Malahide for a commuting buyer, side by side on price, rent, yield and rail access.