Castleknock house prices
Median sale price, year trend, rents, yields and recent sales for Castleknock, drawn from official property data.
In brief
The median sale price in Castleknock, Co. Dublin over the last 12 months is €599,000, up 12.0% on the year before across 219 recorded sales. The median advertised rent is €2,192 a month. Gross rental yield works out at +4.4%. Figures are compiled from the Property Price Register, CSO RPPI and RTB, for the data month shown below.
House prices in Castleknock
| Median price (12 months) | €599,000 |
|---|---|
| Year on year | +12.0% |
| Sales recorded (12 months) | 219 |
| New-build median | €725,025 |
| Second-hand median | €582,000 |
Median of open-market sales each year (Property Price Register). Latest year is partial.
| Year | Median | Sales |
|---|---|---|
| 2023 | €535,000 | 227 |
| 2024 | €506,075 | 250 |
| 2025 | €596,000 | 242 |
| 2026 | €582,000 | 119 |
For wider context, the CSO Residential Property Price Index puts the median for Fingal at €500,000, up 4.3% year on year (May 2026). The CSO figure covers a wider area than the Castleknock sales above.
Rents in Castleknock
| Median rent (monthly) Q4 2025 | €2,192 |
|---|---|
| Rent, year on year | +5.8% |
| 2 bed | €2,034 |
| 3 bed | €2,326 |
| 4+ bed | €2,913 |
At these prices and rents, gross rental yield in Castleknock is +4.4%, or about +3.4% net of typical costs.
What sold in Castleknock
The latest of 219 sales recorded on the Property Price Register near Castleknock in the last 12 months, as recorded on the register. The register updates weekly, roughly two months ahead of the official averages, and this dataset refreshes weekly from it.
| Date | Address | Price |
|---|---|---|
| 29 Jul 2026 | 10 Riverwood Gardens, Castleknock, Dublin 15 | €525,000 |
| 24 Jul 2026 | 5 Annfield Court, Castleknock, Dublin 15 | €465,000 |
| 23 Jul 2026 | 17 Brompton Green, Castleknock, Dublin 15 | €595,000 |
| 22 Jul 2026 | 3 Roselawn Walk, Castleknock, Dublin 15 | €665,000 |
| 21 Jul 2026 | 23 Luttrellstown View, Castleknock, Dublin 15 | €1,052,500 |
| 15 Jul 2026 | 4 Hawthorn House, Farmleigh Woods, Castleknock | €582,000 |
| 14 Jul 2026 | 26 Bracken Park Drive, Carpenterstown Road, Castleknock | €900,000 |
| 13 Jul 2026 | 68 Phoenix Park Ave., Castleknocknew | €788,546 |
Prices are as recorded on the register (new builds are recorded ex-VAT there; the medians above adjust for that, these records do not). See this month's sales before the averages update: the monthly Co. Dublin email below includes the latest Castleknock sales.
Planning near Castleknock
In the 12 months to 11 Aug 2026, 38 planning applications were granted in and around Castleknock. See Dublin planning applications by district for live applications, decisions and refusals.
| Decided | Development | Units |
|---|---|---|
| 28 Jul 2026 | The development will consist of: Construction of a dormer extension t | – |
| 16 Jul 2026 | The proposed development will consist: (a) first floor extension to th | – |
| 22 Jun 2026 | Planning permission for attic conversion with roof windows to side roo | – |
| 22 Jun 2026 | Permission for the construction of a single storey extension (c. 9.5m2 | – |
| 18 Jun 2026 | The development will consist of: Permission sought for new ground floo | – |
Source: Irish Planning Applications, DHLGH ArcGIS FeatureServer, CC-BY 4.0. Grants within 7 km, keyed to the nearest tracked town.
More on Castleknock
- Living in Castleknock covers schools, commute and what it is like to live there, with the native calculators.
- Compare against every town in the county in our Co. Dublin house prices guide.
- Visiting first? Things to do in Castleknock covers attractions and walks nearby.
- Nearby: Balbriggan, Blackrock, Booterstown, Cabinteely, Citywest, Dalkey.
Property data to May 2026, from PPR, CSO and RTB. How we compute these figures
Source: Property Price Register (open-market sales, new builds VAT-adjusted), CSO RPPI (HPM05/HPM09) for year-on-year context, and RTB (RIQ02) for rents. Latest recorded year is partial. See ourmethodology for how these figures are computed.