What are the largest development sites in Stillorgan?
168 development sites in Stillorgan are a hectare or larger, as of 25 Sep 2026. The largest is land in Stillorgan, at 22.6 ha (on the rzlt map (3% land tax)).
From public registers, checked 25 Sep 2026. Updated nightly.
Sites of a hectare or more in Stillorgan, largest first
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
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
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
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 15.22 ha · source
On the RZLT map, no permission
15.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 14.64 ha · source
On the RZLT map, no permission
14.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 14.59 ha · source
On the RZLT map, no permission
14.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 14.2 ha · source
On the RZLT map (3% land tax)
14.2 ha, On the 2027 draft RZLT map
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 11.05 ha · source
On the RZLT map, no permission
11.1 ha, RZLT-liable and no live permission for 10+ homes on it
Public land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 10.37 ha · source
Publicly owned land
10.4 ha, Held by Irish Water
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 10.17 ha · source
On the RZLT map (3% land tax)
10.2 ha, On the 2027 draft RZLT map
Public land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 10 ha · source
Publicly owned land
10.0 ha, Held by Dún Laoghaire-Rathdown County Council
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 9.98 ha · source
On the RZLT map (3% land tax)
10.0 ha, On the 2027 draft RZLT map
Land in Stillorgan
Stillorgan · 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 Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 8.9 ha · source
On the RZLT map, no permission
8.9 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 8.54 ha · source
On the RZLT map, no permission
8.5 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 8.29 ha · source
On the RZLT map, no permission
8.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 8.11 ha · source
On the RZLT map (3% land tax)
8.1 ha, On the 2027 draft RZLT map
Public land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 8 ha · source
Publicly owned land
8.0 ha, Held by Irish Water
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 7.61 ha · source
On the RZLT map (3% land tax)
7.6 ha, On the 2027 draft RZLT map
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 7.23 ha · source
On the RZLT map, no permission
7.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 6.86 ha · source
On the RZLT map, no permission
6.9 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 6.57 ha · source
On the RZLT map, no permission
6.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 6.4 ha · source
On the RZLT map, no permission
6.4 ha, RZLT-liable and no live permission for 10+ homes on it
Public land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 6.25 ha · source
Publicly owned land
6.3 ha, Held by National University of Ireland
Land in Stillorgan
Stillorgan · Dún Laoghaire-Rathdown · 5.72 ha · source
On the RZLT map, no permission
5.7 ha, RZLT-liable and no live permission for 10+ homes on it
Showing 25 of 168. See them all →
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More about Stillorgan
- Is there development land for sale in Stillorgan?
- Buildable found 27 sites in Stillorgan with a public sign they could come to market, as of 25 Sep 2026: 5 sites with planning permission running out or recently expired, 2 derelict sites on the register and 20 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.
- How many development sites are there in Stillorgan?
- Buildable tracks 330 development sites in Stillorgan, 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 3 permissions running out, 7 permitted schemes not started, 2 derelict sites and 20 stalled builds.
- How much land in Stillorgan is on the RZLT map?
- 573 ha of land in Stillorgan is on the Residential Zoned Land Tax map, across 271 parcels (2027 draft RZLT map), as of 25 Sep 2026. 464 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 Stillorgan has no planning permission?
- 464 ha in Stillorgan is zoned for housing, on the RZLT map and has no live permission for 10 or more homes: 250 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 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 Stillorgan? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/largest-development-sites-stillorgan
Facts from public registers, not advice. Every question · How it works