House prices in Castleknock
The median house in Castleknock, Co. Dublin sold for
€455,000
in 2025, across 113 sales that counted.
Every figure here comes from the Property Price Register, the official record of residential sales in Ireland, filed since 2010.
On the year before, the median rose 7.1%. Over the five years to 2025 it rose 40.0%.
2026 is still running. The median so far is €477,500 over 61 sales, which is not comparable with a full year.
Sales here carried the Eircode area D15.
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What the sales say
The kind of place Castleknock is
Read out of the sales themselves. None of this is a description of what Castleknock is like to live in, which we have no way of knowing. It is what changed hands here.
Still being added to
29% of sales since 2016 were new builds, so building has carried on here rather than stopped.
In line with Dublin
The median here sat within a quarter of the county median in 2025, so it tracks the county rather than standing apart from it.
A steady market
113 sales counted in 2025. Enough changes hands for the figures to hold up.
The shape of it
Year by year
- 2010€330,000
- 2011€290,000
- 2012€265,000
- 2013€300,000
- 2014€265,000
- 2015€280,000
- 2016€299,030
- 2017€350,000
- 2018€375,000
- 2019€368,815
- 2020€325,000
- 2021€407,500
- 2022€425,000
- 2023€416,500
- 2024€425,000
- 2025€455,000
- 2026*€477,500
| Year | Median | Middle half | Sales | New builds | Set aside |
|---|---|---|---|---|---|
| 2026part year | €477,500 | €395,000 to €600,000 | 61 | 18% | 13 |
| 2025 | €455,000 | €378,000 to €680,000 | 113 | 26% | 40 |
| 2024 | €425,000 | €342,000 to €541,000 | 111 | 38% | 73 |
| 2023 | €416,500 | €325,000 to €631,250 | 124 | 2% | 3 |
| 2022 | €425,000 | €340,000 to €570,000 | 115 | 7% | 11 |
| 2021 | €407,500 | €294,000 to €486,875 | 160 | 13% | 25 |
| 2020 | €325,000 | €263,389 to €460,000 | 87 | 34% | 45 |
| 2019 | €368,815 | €284,000 to €480,000 | 101 | 47% | 89 |
| 2018 | €375,000 | €315,000 to €480,000 | 85 | 43% | 69 |
| 2017 | €350,000 | €258,750 to €456,500 | 116 | 47% | 109 |
| 2016 | €299,030 | €247,125 to €404,375 | 102 | 59% | 152 |
| 2015 | €280,000 | €195,000 to €377,000 | 136 | 35% | 73 |
| 2014 | €265,000 | €205,000 to €377,750 | 108 | 19% | 26 |
| 2013 | €300,000 | €235,250 to €389,000 | 103 | 73% | 281 |
| 2012 | €265,000 | €192,500 to €375,000 | 107 | 10% | 14 |
| 2011 | €290,000 | €236,500 to €355,500 | 67 | 43% | 50 |
| 2010 | €330,000 | €260,000 to €426,000 | 81 | 26% | 28 |
Set aside counts the sales left out of each median: ones that were not at arm’s length, and ones where the recorded price left out the tax the buyer paid.
Most recent
The last 12 sales in Castleknock
Addresses as filed for stamp duty, with the Eircode where the register carries one. Streets are linked where enough has sold on them for a page of their own.
- 17 Cloonlara Sq, Phoenix Park Racecourse, Castleknock Dublin 15D15 YF8827 August 2026 on Phoenix Park Racecourse · also sold €425,000 in 2022€445,000
- 6 Sycamore View, Carpenterstown, Castleknock Dublin 15D15 K83F26 August 2026 on Carpenterstown€650,000
- Rockane, 37A Deerpark Road, CastleknockD15 APX221 August 2026€2,050,000
- 71 Glenesky Sq, Phoenix Park Racecourse, Castleknock Dublin 15D15 NH6420 August 2026 on Phoenix Park Racecourse€440,000
- 13 Woodview Park, Auburn Ave, CastleknockD15 K44P18 August 2026€590,000
- 2 Fairhaven Walk, Phoenix Park Racecourse, CastleknockD15 KN0Vnew build12 August 2026 on Phoenix Park Racecourse€778,500ex VAT
- 6 Goldsmith Hall, Collegewood, Castleknock Dublin 15D15 TH2812 August 2026 on Collegewood€420,000
- 34 Rosehaven, Carpenterstown Rd, Castleknock Dublin 15D15 XY2E6 August 2026 on Carpenterstown Rd€303,000
- 28 Rosehaven, Carpenterstown Rd, CastleknockD15 VX3330 July 2026 on Carpenterstown Rd€345,000
- 1 Maple Green, Carpenterstown, Castleknock Dublin 15D15 CX6K29 July 2026 on Carpenterstown€745,000
- Apt 1 Denewood, Beech Park Ave, Castleknock Dublin 15D15 A09827 July 2026€477,500
- 34 Woodbrook Park, Riverwood Rd, Castleknock Dublin 15D15 F95817 July 2026 on Riverwood Rd€415,000
What your money buys
What sold, and at what price
Every counted sale in Castleknock since 2023, sorted into bands. Recent years only, deliberately: over the whole register nearly half of everywhere looks cheap, because of what houses cost in 2012. The question this answers is whether anything at all sells for what you have now.
- €0k to €150k3 (1%)
- €150k to €250k13 (3%)
- €250k to €350k79 (19%)
- €350k to €500k156 (38%)
- €500k to €750k90 (22%)
- €750k and over68 (17%)
Where the sales are
Busiest streets and estates in Castleknock
All 55 of them, counted over the whole register, so these span years rather than describing this one. A street needs five sales before it appears at all.
- Phoenix Park Racecourse563 sales€375,000
- Carpenterstown Rd245 sales€365,000
- Castleknock Road214 sales€356,211
- Carpenterstown123 sales€385,000
- Collegewood123 sales€320,000
- Farmleigh Woods123 sales€450,000
- Laurel Lodge105 sales€425,000
- Riverwood Rd101 sales€290,000
- Diswellstown76 sales€435,000
- Hamilton Park59 sales€600,000
- Auburn Avenue42 sales€210,000
- Diswellstown Manor36 sales€760,000
- Collegefort26 sales€285,000
- Beechpark Avenue23 sales€730,000
- Riverwood23 sales€255,000
- Whites Road21 sales€792,000
- Beechpark Ave20 sales€460,500
- Old Navan Rd18 sales€328,500
- Pecks Lane18 sales€492,500
- Carpenterstown Park17 sales€445,000
- River Rd16 sales€267,500
- Castaheaney13 sales€160,000
- Riverwood Square13 sales€581,000
- Phoenix Park12 sales€365,000
- Bracken Park11 sales€335,000
- Georgian Village11 sales€890,000
- College Rd10 sales€1,200,000
- Diswellstown Avenue10 sales€420,000
- Porterstown10 sales€310,000
- Porterstown Road10 sales€742,500
- Annfield Crescent9 sales€232,500
- College Wood9 sales€353,000
- Luttrellstown Wood9 sales€525,000
- Fairhaven Avenue7 sales€510,000
- Fernleigh7 sales€270,000
- Phoenix Park Race Course7 sales€350,000
- Somerton7 sales€925,000
- Carpenstown Road6 sales€839,000
- Castleknock Park6 sales€718,500
- Fernleigh Drive6 sales€207,500
- Pheonix Park Racecourse6 sales€385,000
- Riverwood Park6 sales€384,000
- Annfield5 sales€225,000
- College Gate5 sales€350,000
- Diswellstown Heath5 sales€695,000
- Diswellstown Park5 sales€415,000
- Diswellstown Road5 sales€240,000
- Farmleigh5 sales€462,500
- Fernleigh Close5 sales€357,000
- Luttrellstown Way5 sales€340,000
- Luttrelstown Wood5 sales€337,500
- Park Drive Green5 sales€325,000
- Roselawn Road5 sales€360,000
- Twelfth Lock5 sales€275,000
- Warren Park5 sales€385,000
New against second hand
New builds in Castleknock
In 2025 the median new build in Castleknock sold for €535,000, against €455,000 for a second hand home, which puts new builds 18% above the rest of the market here. That is over 39 new build sales and 113 second hand ones.
The new build figure is reconstructed rather than recorded. A new home goes on the register at its price before Value Added Tax, so the filed figure has been multiplied by 1.135 to get back to what the buyer paid. New build prices across the country.
The other side of it
Renting in Castleknock
The average rent registered in Castleknock was €2,192 a month in October to December 2025. By bedrooms, by property type and quarter by quarter.
That is an average over tenancies registered with the Residential Tenancies Board, and the figure above it is a median over sales. Two different statistics about two different sets of homes, so nothing here divides one by the other.
Elsewhere in Dublin
Renting instead
If you are renting in Castleknock
Rent is capped everywhere in the State now, at 2% or inflation a year, whichever is lower. Work out what your own rent can rise to or read what replaced Rent Pressure Zones.
How the place was worked out
The register has no town column. It has an address, and the place is read out of it: the county is stripped off and the part left at the end is the locality. Addresses that end in a street name rather than a place are not counted towards anywhere.
A place appears here only where at least forty sales were recorded in it, and a figure is printed for a year only where at least ten sales sat behind it.
Source: Property Services Regulatory Authority, used under the Creative Commons Attribution 4.0 licence and summarised rather than reproduced. Imported 9 September 2026.
Guides
Worth reading beside this
How to read an entry on the Property Price Register
The date is not the sale date, the address is whatever the solicitor typed, and about 15.2% of entries in our town-level comparison sample carry no Eircode. What each field means.
Why the price on the register is not what the buyer paid
About 10.4% of sales in our town-level comparison sample are filed without the VAT the buyer paid on top. A €400,000 new build appears as €352,423. How to spot one and what to add back.
What a house actually gained between two sales
1,099 properties in our town-level comparison sample have sold more than once. Matching the two sales gives a real gain on a real house, which is a different thing to a national index.