Derelict and unbuilt land in Stillorgan
As of 25 Sep 2026, Stillorgan (Dún Laoghaire-Rathdown) has 2 derelict sites, 930 homes permitted but not started and 464 ha zoned for housing with no permission. 20 building sites started work and did not finish.
2 Derelict sites
2 sites on the derelict sites register.
- DERELICT, 65 DEERPARK ROAD, MOUNT MERRION, CO.DUBLIN · Register ref DS 1646
- DERELICT, WYNNSTAY HOUSE, CLONSKEAGH ROAD, DUBLIN 14 · Register ref DS: 1628
The owner of a registered site pays a levy of 7% of its market value a year.
20 Stalled builds
20 sites started but not finished, 415 homes.
- Knockrabo Phase 2B - Enabling works · 93 homes; commenced 14 Nov 2019, no completion certificate, planned end Feb 2020
- Kilmacud House · 55 homes; commenced 11 Jun 2018, no completion certificate, planned end Jun 2020
- Deerpark Road, Mount Merrion, Blackrock · 48 homes; commenced 16 Aug 2019, no completion certificate, planned end May 2021
- Stillorgan Gate · 48 homes; commenced 04 Aug 2015, no completion certificate, planned end Aug 2017
- Drummartin Apartments · 47 homes; commenced 23 Sep 2022, no completion certificate, planned end Aug 2024
- HERONS WOOD · 34 homes; commenced 04 May 2021, no completion certificate, planned end Sep 2022
- Herons Wood · 34 homes; commenced 18 Jul 2022, no completion certificate, planned end Feb 2024
- Sringfield House, Springfield Park, Foxrock · 23 homes; commenced 01 Mar 2018, no completion certificate, planned end Jun 2018
10 Permitted, not started
930 homes with planning permission and no start, across 10 permissions.
- Brewery Road and Leopardstown Road · 463 homes, expires 13 Apr 2027
- Mount Anville Lands · 114 homes granted 01 Aug 2024, expires 01 Aug 2029
- 'The Grange' · 102 homes, expires 2 Jun 2027
- Fosters Avenue · 68 homes granted 18 Mar 2025, expires 18 Mar 2030
- Old Bray Road · 49 homes granted 08 Aug 2024, expires 08 Aug 2029
- Brighton Grove · 48 homes granted 26 Mar 2025, expires 26 Mar 2030
- 1 The Hill · 41 homes granted 13 Oct 2025, expires 13 Oct 2030
- St. Annes Convent · 19 homes granted 24 Sep 2025, expires 24 Sep 2030
2 Permission expired
2 permissions expired recently without a start.
- Killart · 19 homes, expired 26 May 2025
- Mount Saint Mary's and Saint Joseph's · 231 homes, expired 25 Aug 2026
250 Zoned for housing, no permission
464 ha on the RZLT map with no live permission for 10 or more homes (250 parcels).
- Land in Stillorgan · 18.5 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 15.2 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 14.6 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 14.6 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 11.1 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 9.4 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 8.9 ha, RZLT-liable and no live permission for 10+ homes on it
- Land in Stillorgan · 8.5 ha, RZLT-liable and no live permission for 10+ homes on it
242 more in Dún Laoghaire-Rathdown →
Land on the map is liable for the Residential Zoned Land Tax, 3% of market value a year.
25 Public land
59.8 ha of publicly owned land (25 sites); the largest holder is Irish Water.
- Public land in Stillorgan · 10.4 ha, Held by Irish Water
- Public land in Stillorgan · 10.0 ha, Held by Dún Laoghaire-Rathdown County Council
- Public land in Stillorgan · 8.0 ha, Held by Irish Water
- Public land in Stillorgan · 6.3 ha, Held by National University of Ireland
- Public land in Stillorgan · 4.4 ha, Held by National University of Ireland
- Public land in Stillorgan · 4.0 ha, Held by National University of Ireland
- Public land in Stillorgan · 3.0 ha, Held by Irish Water
- Public land in Stillorgan · 2.4 ha, Held by Dún Laoghaire-Rathdown County Council
Nothing on the registers for Stillorgan: council selling land.
Open Stillorgan on the map Every site in Stillorgan
Questions about Stillorgan
New 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.
Data as of 25 Sep 2026. Sources: Council derelict sites registers (Derelict Sites Act 1990); Commencement and completion notices (National Building Control Office); Planning applications (Department of Housing national planning data); Council Residential Zoned Land Tax maps; Land Development Agency, Register of Relevant Lands; Council meeting agendas (s.183 disposal notices).
Facts from public registers, gathered by Buildable (https://buildable.ie/land/dlr/13260405/report). Free to share and quote with a link. Not advice.