Brompton Green, Castleknock: sold prices
There are 8 recorded sales on Brompton Green since 2010. Homes have sold for a median of €635,000 since January 2023, across 3 open-market sales; the most recent was 17 Brompton Green, at €595,000 in July 2026.
Brompton Green sales since 2010
Dashed line: two-year rolling median. Non-market sales and VAT-exclusive new-build prices excluded.
About Brompton Green
Brompton Green is made up of semi-detached houses, most of them four-bedroom family homes of around 126 m². Several have a converted garage that adds extra ground-floor living space, and driveways provide off-street parking. The homes are generally well presented, with rear gardens that face a mix of east and south-west.
Brompton Green is in Castleknock, close to Roselawn Shopping Centre and Blanchardstown Shopping Centre. Castleknock train station, on the Maynooth line to the city centre, is a short walk away, and Dublin Bus serves the area. Nearby are Castleknock Golf and Country Club, St Brigid's GAA Club, Castleknock Lawn Tennis Club and the Phoenix Park. St Francis Xavier National School, James Connolly Memorial Hospital and the National Aquatic Centre are also nearby. The M50 is a few minutes' drive away.
Every recorded sale
| Address | Date | Asking | Sold | vs asking |
|---|---|---|---|---|
| 17 Brompton Green4 bed · 126 m² | 23 Jul 2026 | €575,000 | €595,000 | +3.5% |
| 19 Brompton Greennot full market price | 12 Dec 2025 | — | €400,000 | |
| 12 Brompton Green4 bed · 130 m² | 31 Jul 2025 | €625,000 | €640,000 | +2.4% |
| 23 Brompton Green4 bed · 126 m² | 21 Jan 2025 | €625,000 | €635,000 | +1.6% |
| 3 Brompton Green | 7 Jul 2022 | — | €572,000 | |
| 8 Brompton Green | 15 Feb 2021 | — | €523,000 | |
| 2 Brompton Green | 8 Sep 2020 | — | €420,000 | |
| 6 Brompton Green | 21 Sep 2018 | — | €544,000 | |
| 25 Brompton Green | 22 Dec 2010 | — | €335,000 |
Planning applications on Brompton Green
3 applications on record, newest first.
- Granted2A Brompton Green, Blanchardstown, DUBLIN 15
Permission for the erection of 1 no. 9.0m long screen boundary wall va…
- Retention granted14 Brompton Green, Castleknock, Dublin 15
The development consists of widening the existing vehicular entrance a…
- Granted2 Brompton Green
Permission for the change of use from dental surgery to residential
Homes on Brompton Green
Every address with a sale or listing on record.