What are the largest development sites in Dún Laoghaire?
182 development sites in Dún Laoghaire are a hectare or larger, as of 25 Sep 2026. The largest is public land in Dún Laoghaire, at 45.7 ha (publicly owned land).
From public registers, checked 25 Sep 2026. Updated nightly.
Sites of a hectare or more in Dún Laoghaire, largest first
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
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
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 14.15 ha · source
On the RZLT map, no permission
14.2 ha, RZLT-liable and no live permission for 10+ homes on it
INSPECTION PROJECT - C01091
Dún Laoghaire · Dún Laoghaire-Rathdown · 10.49 ha · source
Stalled build
commenced 01 Jun 2018, no completion certificate, planned end Sep 2018
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 9.78 ha · source
On the RZLT map, no permission
9.8 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 9.37 ha · source
On the RZLT map, no permission
9.4 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 8.8 ha · source
On the RZLT map, no permission
8.8 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 8.09 ha · source
On the RZLT map, no permission
8.1 ha, RZLT-liable and no live permission for 10+ homes on it
Public land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 8.02 ha · source
Publicly owned land
8.0 ha, Held by The Minister for Education and Skills
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.97 ha · source
On the RZLT map (3% land tax)
8.0 ha, On the 2027 draft RZLT map
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.83 ha · source
On the RZLT map, no permission
7.8 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.82 ha · source
On the RZLT map, no permission
7.8 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.57 ha · source
On the RZLT map, no permission
7.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.48 ha · source
On the RZLT map, no permission
7.5 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 7.45 ha · source
On the RZLT map, no permission
7.4 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 6.9 ha · source
On the RZLT map, no permission
6.9 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 6.78 ha · source
On the RZLT map, no permission
6.8 ha, RZLT-liable and no live permission for 10+ homes on it
Expansion of current Pharmaceutical Manufacturing Facility
Dún Laoghaire · Dún Laoghaire-Rathdown · 6.58 ha · source
Stalled build
commenced 25 Jan 2021, no completion certificate, planned end Jul 2021
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.9 ha · source
On the RZLT map, no permission
5.9 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.74 ha · source
On the RZLT map, no permission
5.7 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.68 ha · source
On the RZLT map, no permission
5.7 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.28 ha · source
On the RZLT map, no permission
5.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.23 ha · source
On the RZLT map (3% land tax)
5.2 ha, On the 2027 draft RZLT map
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.23 ha · source
On the RZLT map, no permission
5.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Dún Laoghaire
Dún Laoghaire · Dún Laoghaire-Rathdown · 5.04 ha · source
On the RZLT map, no permission
5.0 ha, RZLT-liable and no live permission for 10+ homes on it
Showing 25 of 182. See them all →
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More about Dún Laoghaire
- Is there development land for sale in Dún Laoghaire?
- Buildable found 35 sites in Dún Laoghaire with a public sign they could come to market, as of 25 Sep 2026: 2 council sites proposed for sale, 2 sites with planning permission running out or recently expired, 9 derelict sites on the register and 22 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?
- Buildable tracks 504 development sites in Dún Laoghaire, 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 1 permission running out, 5 permitted schemes not started, 12 derelict sites, 2 council land sales and 22 stalled builds.
- Where are the derelict sites in Dún Laoghaire?
- Dún Laoghaire has 9 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 are also on the RZLT map?
- 2 derelict sites in Dún Laoghaire 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? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/largest-development-sites-dun-laoghaire
Facts from public registers, not advice. Every question · How it works