BuildableFree beta

Is there development land for sale in Castleknock?

Buildable found 17 sites in Castleknock with a public sign they could come to market, as of 25 Sep 2026: 5 council sites proposed for sale, 1 derelict site on the register and 11 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.

From public registers, checked 25 Sep 2026. Updated nightly.

  • 5Council selling land
  • 1Derelict site
  • 11Stalled build

Sites that could sell in Castleknock

  1. Land at Porterstown Road, Porterstown, Dublin 15

    Castleknock · Fingal · source

    Council selling land

    Notice dated 7 Jul 2025

  2. Land adjacent to Oatlands Gate Lodge, Porterstown Road, Dublin 15

    Castleknock · Fingal · source

    Council selling land

    Notice dated 7 Mar 2024

  3. Land adjacent to Oatlands Gate Lodge, Porterstown Road, Dublin 15

    Castleknock · Fingal · source

    Council selling land

    Notice dated 11 Mar 2024

  4. Land in Castleknock

    Castleknock · Fingal · source

    Council selling land

    Notice dated 9 Feb 2026

  5. Land in Castleknock

    Castleknock · Fingal · source

    Council selling land

    Notice dated 13 Jan 2026

  6. Allendale House, Clonsilla Road, Dublin 15

    Castleknock · Fingal · source

    Derelict site

    Register ref DS 25.05, entered 23 Jun 2025, market value €150,000

  7. Diswellstown, Castleknock, Dublin 15

    Castleknock · Fingal · 9.5 ha · source

    Stalled build

    224 homes; commenced 12 Nov 2014, no completion certificate, planned end Jul 2015

  8. Diswellstown, Castleknock, Dublin 15

    Castleknock · Fingal · 9.5 ha · source

    Stalled build

    224 homes; commenced 01 Jun 2015, no completion certificate, planned end Feb 2016

  9. Clonsilla Link Road, Dublin, Dublin 15

    Castleknock · Fingal · 4.32 ha · source

    Stalled build

    62 homes; commenced 11 May 2018, no completion certificate, planned end Nov 2019

  10. Works at Oatlands House

    Castleknock · Fingal · 1.31 ha · source

    Stalled build

    12 homes; commenced 25 Sep 2017, no completion certificate, planned end Jul 2018

  11. Clonsilla Road, Clonsilla, Dublin 15

    Castleknock · Fingal · 1.04 ha · source

    Stalled build

    33 homes; commenced 23 Mar 2017, no completion certificate, planned end Jul 2017

  12. 1-88 Parkside, Block 1, Phoenix Park ave., Castleknock D15

    Castleknock · Fingal · 0.63 ha · source

    Stalled build

    88 homes; commenced 22 Oct 2021, no completion certificate, planned end Oct 2022

  13. 6 Homeleigh, Dublin

    Castleknock · Fingal · 0.41 ha · source

    Stalled build

    1 homes; commenced 27 Oct 2022, no completion certificate, planned end Mar 2023

  14. Grove Court Apartments External Works

    Castleknock · Fingal · 0.34 ha · source

    Stalled build

    97 homes; commenced 10 Apr 2018, no completion certificate, planned end Jun 2018

  15. 55 Luttrellstown Drive, castleknock, Dublin

    Castleknock · Fingal · source

    Stalled build

    1 homes; commenced 13 Aug 2018, no completion certificate, planned end Nov 2018

  16. Grove Road office re-organisation

    Castleknock · Fingal · source

    Stalled build

    commenced 11 Feb 2019, no completion certificate, planned end Apr 2019

  17. UNIT 401 RETAIL PARK 1 BLANCHARDSTOWN CENTRE, Dublin, Fingal

    Castleknock · Fingal · source

    Stalled build

    commenced 09 Jun 2022, no completion certificate, planned end Jul 2022

Go further

New development sites in Fingal, every Monday

The week's new sites: permission running out, council selling land, derelict or stalled. Each with its source. Free while in beta.

More about Castleknock

How many development sites are there in Castleknock?
Buildable tracks 562 development sites in Castleknock, as of 25 Sep 2026: every site with a public reason it could be built on or sold, from the councils' and national registers. They include 7 permitted schemes not started, 1 derelict site, 7 council land sales and 11 stalled builds.
What are the largest development sites in Castleknock?
178 development sites in Castleknock are a hectare or larger, as of 25 Sep 2026. The largest is public land in Castleknock, at 32.4 ha (publicly owned land).
How much land in Castleknock is on the RZLT map?
499 ha of land in Castleknock is on the Residential Zoned Land Tax map, across 371 parcels (2027 draft RZLT map), as of 25 Sep 2026. 434 ha of it has no live permission for 10 or more homes. The tax is 3% of market value a year, collected by Revenue on maps the councils make.
How much zoned land in Castleknock has no planning permission?
434 ha in Castleknock is zoned for housing, on the RZLT map and has no live permission for 10 or more homes: 352 parcels, as of 25 Sep 2026. Land on the map is liable for the Residential Zoned Land Tax of 3% of market value a year.

Data as of 25 Sep 2026. Sources: Council meeting agendas (s.183 disposal notices); Planning applications (Department of Housing national planning data); Council derelict sites registers (Derelict Sites Act 1990); Commencement and completion notices (National Building Control Office).

Cite this: Is there development land for sale in Castleknock? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/development-land-for-sale-castleknock

Facts from public registers, not advice. Every question · How it works