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What are the largest development sites in Dún Laoghaire-Rathdown?

1,074 development sites in Dún Laoghaire-Rathdown are a hectare or larger, as of 25 Sep 2026. The largest is public land in Glencullen-Sandyford, at 70.1 ha (publicly owned land).

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

Sites of a hectare or more in Dún Laoghaire-Rathdown, largest first

  1. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 70.15 ha · source

    Publicly owned land

    70.1 ha, Held by Horse Racing Ireland

  2. Public land in Dún Laoghaire

    Dún Laoghaire · Dún Laoghaire-Rathdown · 45.67 ha · source

    Publicly owned land

    45.7 ha, Held by Dun Laoghaire Rathdown County Council

  3. Kilternan Centre of Excellence forEquine Breeding and Training

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 37.74 ha · source

    Stalled build

    commenced 16 Dec 2020, no completion certificate, planned end Aug 2022

  4. Land in Killiney-Shankill

    Killiney-Shankill · Dún Laoghaire-Rathdown · 36.12 ha · source

    On the RZLT map, no permission

    36.1 ha, RZLT-liable and no live permission for 10+ homes on it

  5. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 30.08 ha · source

    Publicly owned land

    30.1 ha, Held by Dublin City Council

  6. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 30 ha · source

    Publicly owned land

    30.0 ha, Held by Dublin City Council

  7. Land in Dún Laoghaire

    Dún Laoghaire · Dún Laoghaire-Rathdown · 28.1 ha · source

    On the RZLT map, no permission

    28.1 ha, RZLT-liable and no live permission for 10+ homes on it

  8. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 26.42 ha · source

    Publicly owned land

    26.4 ha, Held by Dublin City Council

  9. Friends First House

    Killiney-Shankill · Dún Laoghaire-Rathdown · 25.65 ha · source

    Stalled build

    commenced 12 May 2021, no completion certificate, planned end Aug 2021

  10. Friends First House

    Killiney-Shankill · Dún Laoghaire-Rathdown · 25.65 ha · source

    Stalled build

    commenced 12 Apr 2021, no completion certificate, planned end Jul 2021

  11. Land in Dundrum

    Dundrum · Dún Laoghaire-Rathdown · 24.69 ha · source

    On the RZLT map, no permission

    24.7 ha, RZLT-liable and no live permission for 10+ homes on it

  12. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 24.21 ha · source

    Publicly owned land

    24.2 ha, Held by The Industrial Development Authority

  13. Land in Stillorgan

    Stillorgan · Dún Laoghaire-Rathdown · 22.59 ha · source

    On the RZLT map (3% land tax)

    22.6 ha, On the 2027 draft RZLT map

  14. Manifold Building, Stillorgan Service Reservoir, Dublin

    Stillorgan · Dún Laoghaire-Rathdown · 21.4 ha · source

    Stalled build

    commenced 12 Oct 2020, no completion certificate, planned end Aug 2021

  15. Land in Killiney-Shankill

    Killiney-Shankill · Dún Laoghaire-Rathdown · 21.29 ha · source

    On the RZLT map (3% land tax)

    21.3 ha, On the 2027 draft RZLT map

  16. Public land in Killiney-Shankill

    Killiney-Shankill · Dún Laoghaire-Rathdown · 20.29 ha · source

    Publicly owned land

    20.3 ha, Held by Dún Laoghaire-Rathdown County Council

  17. Land in Blackrock

    Blackrock · Dún Laoghaire-Rathdown · 20.06 ha · source

    On the RZLT map, no permission

    20.1 ha, RZLT-liable and no live permission for 10+ homes on it

  18. Land in Blackrock

    Blackrock · Dún Laoghaire-Rathdown · 18.88 ha · source

    On the RZLT map (3% land tax)

    18.9 ha, On the 2027 draft RZLT map

  19. Land in Stillorgan

    Stillorgan · Dún Laoghaire-Rathdown · 18.48 ha · source

    On the RZLT map, no permission

    18.5 ha, RZLT-liable and no live permission for 10+ homes on it

  20. Land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 18.33 ha · source

    On the RZLT map (3% land tax)

    18.3 ha, On the 2027 draft RZLT map

  21. Public land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 17.33 ha · source

    Publicly owned land

    17.3 ha, Held by Dublin City Council

  22. TC 1 Soil Excavation

    Killiney-Shankill · Dún Laoghaire-Rathdown · 16.99 ha · source

    Stalled build

    1 homes; commenced 20 May 2020, no completion certificate, planned end Aug 2020

  23. Cherrywood TC 1 Site Works

    Killiney-Shankill · Dún Laoghaire-Rathdown · 16.99 ha · source

    Stalled build

    1 homes; commenced 08 Feb 2021, no completion certificate, planned end Jun 2021

  24. Land in Killiney-Shankill

    Killiney-Shankill · Dún Laoghaire-Rathdown · 16.68 ha · source

    On the RZLT map, no permission

    16.7 ha, RZLT-liable and no live permission for 10+ homes on it

  25. Land in Glencullen-Sandyford

    Glencullen-Sandyford · Dún Laoghaire-Rathdown · 16.07 ha · source

    On the RZLT map, no permission

    16.1 ha, RZLT-liable and no live permission for 10+ homes on it

Showing 25 of 1,074. See them all →

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New development sites in Dún Laoghaire-Rathdown, 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 Dún Laoghaire-Rathdown

Is there development land for sale in Dún Laoghaire-Rathdown?
Buildable found 165 sites in Dún Laoghaire-Rathdown with a public sign they could come to market, as of 25 Sep 2026: 2 council sites proposed for sale, 12 sites with planning permission running out or recently expired, 16 derelict sites on the register and 135 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.
How many development sites are there in Dún Laoghaire-Rathdown?
Buildable tracks 2,732 development sites in Dún Laoghaire-Rathdown, 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 8 permissions running out, 41 permitted schemes not started, 20 derelict sites, 2 council land sales and 135 stalled builds.
Where are the derelict sites in Dún Laoghaire-Rathdown?
Dún Laoghaire-Rathdown has 16 sites on the council's derelict sites register, as of 25 Sep 2026. The owner of a registered site pays a levy of 7% of its market value a year.
Which derelict sites in Dún Laoghaire-Rathdown are also on the RZLT map?
3 derelict sites in Dún Laoghaire-Rathdown are also on the Residential Zoned Land Tax map, as of 25 Sep 2026. That land is zoned for housing, and its owners face the derelict sites levy (7% of market value a year) as well as the 3% land tax.

Data as of 25 Sep 2026. Sources: Council Residential Zoned Land Tax maps; Land Development Agency, Register of Relevant Lands; Planning applications (Department of Housing national planning data).

Cite this: What are the largest development sites in Dún Laoghaire-Rathdown? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/largest-development-sites-dun-laoghaire-rathdown

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