What are the largest development sites in South Dublin?
357 development sites in South Dublin are a hectare or larger, as of 25 Sep 2026. The largest is Pfizer Grangecastle Drug Substance 2 (DS2) Project, at 35.7 ha (stalled build).
From public registers, checked 25 Sep 2026. Updated nightly.
Sites of a hectare or more in South Dublin, largest first
Pfizer Grangecastle Drug Substance 2 (DS2) Project
Clondalkin · South Dublin · 35.7 ha · source
Stalled build
commenced 08 May 2023, no completion certificate, planned end Aug 2023
Pfizer Ireland Pharmaceuticals
Clondalkin · South Dublin · 35.7 ha · source
Stalled build
commenced 30 Nov 2020, no completion certificate, planned end Feb 2022
Land in Lucan
Lucan · South Dublin · 29.51 ha · source
Permitted, not started
1252 homes granted 31 Mar 2026, expires 31 Mar 2031
Kilcarbery Grange, Clondalkin, South Dublin
Clondalkin · South Dublin · 28.5 ha · source
Stalled build
578 homes; commenced 25 Aug 2023, no completion certificate, planned end Oct 2024
Land in Clondalkin
Clondalkin · South Dublin · 28.5 ha · source
On the RZLT map (3% land tax)
28.5 ha, On the 2027 draft RZLT map
Public land in Clondalkin
Clondalkin · South Dublin · 23.84 ha · source
Publicly owned land
23.8 ha, Held by Dublin City Council
Land in Firhouse-Bohernabreena
Firhouse-Bohernabreena · South Dublin · 23.67 ha · source
On the RZLT map (3% land tax)
23.7 ha, On the 2027 draft RZLT map
Public land in Tallaght Central
Tallaght Central · South Dublin · 22.59 ha · source
Publicly owned land
22.6 ha, Held by Dublin City Council
Land in Tallaght South
Tallaght South · South Dublin · 21.89 ha · source
On the RZLT map, no permission
21.9 ha, RZLT-liable and no live permission for 10+ homes on it
Public land in Tallaght Central
Tallaght Central · South Dublin · 21.17 ha · source
Publicly owned land
21.2 ha, Held by Dublin City Council
Public land in Firhouse-Bohernabreena
Firhouse-Bohernabreena · South Dublin · 20.59 ha · source
Publicly owned land
20.6 ha, Held by South Dublin County Council
Public land in Lucan
Lucan · South Dublin · 20.13 ha · source
Publicly owned land
20.1 ha, Held by South Dublin County Council
Public land in Palmerstown-Fonthill
Palmerstown-Fonthill · South Dublin · 19.96 ha · source
Publicly owned land
20.0 ha, Held by Dublin City Council
Public land in Clondalkin
Clondalkin · South Dublin · 19.28 ha · source
Publicly owned land
19.3 ha, Held by Dublin City Council
Boherboy
Clondalkin · South Dublin · 18.8 ha · source
Permitted, not started
611 homes granted 25 Jun 2026, expires 25 Jun 2031
Public land in Tallaght Central
Tallaght Central · South Dublin · 17.04 ha · source
Publicly owned land
17.0 ha, Held by Dublin City Council
Public land in Firhouse-Bohernabreena
Firhouse-Bohernabreena · South Dublin · 16.58 ha · source
Publicly owned land
16.6 ha, Held by Dublin City Council
Public land in Clondalkin
Clondalkin · South Dublin · 15.96 ha · source
Publicly owned land
16.0 ha, Held by Dublin City Council
Public land in Tallaght South
Tallaght South · South Dublin · 15.54 ha · source
Publicly owned land
15.5 ha, Held by Dublin City Council
Public land in Lucan
Lucan · South Dublin · 14.84 ha · source
Publicly owned land
14.8 ha, Held by South Dublin County Council
Public land in Clondalkin
Clondalkin · South Dublin · 14.64 ha · source
Publicly owned land
14.6 ha, Held by Dublin City Council
Land in Clondalkin
Clondalkin · South Dublin · 14.46 ha · source
On the RZLT map (3% land tax)
14.5 ha, On the 2027 draft RZLT map
Land in Clondalkin
Clondalkin · South Dublin · 14.04 ha · source
On the RZLT map (3% land tax)
14.0 ha, On the 2027 draft RZLT map
Land in Clondalkin
Clondalkin · South Dublin · 13.94 ha · source
On the RZLT map (3% land tax)
13.9 ha, On the 2027 draft RZLT map
Public land in Clondalkin
Clondalkin · South Dublin · 13.53 ha · source
Publicly owned land
13.5 ha, Held by South Dublin County Council
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The week's new sites: permission running out, council selling land, derelict or stalled. Each with its source. Free while in beta.
More about South Dublin
- Is there development land for sale in South Dublin?
- Buildable found 112 sites in South Dublin with a public sign they could come to market, as of 25 Sep 2026: 6 council sites proposed for sale, 8 sites with planning permission running out or recently expired, 26 derelict sites on the register and 72 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.
- How many development sites are there in South Dublin?
- Buildable tracks 2,571 development sites in South Dublin, 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 2 permissions running out, 42 permitted schemes not started, 28 derelict sites, 6 council land sales and 72 stalled builds.
- Where are the derelict sites in South Dublin?
- South Dublin has 26 sites on the council's derelict sites register, as of 25 Sep 2026. 21 of them list a market value, €7 million in total. The owner of a registered site pays a levy of 7% of its market value a year.
- How much is the derelict sites levy in South Dublin?
- The derelict sites levy is 7% of a registered site's market value, every year. The South Dublin register lists 26 sites; 21 show a market value, €7 million together, which at 7% is €488,250 a year (as of 25 Sep 2026). Budget 2026 announced a Derelict Property Tax run by Revenue; it is not yet law.
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 South Dublin? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/largest-development-sites-south-dublin
Facts from public registers, not advice. Every question · How it works