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How many development sites are there in Dún Laoghaire?

Buildable tracks 484 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.

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

  • 398On the RZLT map (3% land tax)
  • 383On the RZLT map, no permission
  • 46Publicly owned land
  • 22Stalled build
  • 12Derelict site
  • 5Permitted, not started
  • 2Council selling land
  • 1Permission expired
  • 1Permission running out

Sites in Dún Laoghaire, the soonest to move first

  1. Lands adjoining Clonkeen College

    Dún Laoghaire · Dún Laoghaire-Rathdown · 3.36 ha · source

    Permission running out

    299 homes, expires 23 Dec 2026

  2. Land in Dún Laoghaire

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Council selling land

    Notice dated 11 May 2026

  3. Land in Dún Laoghaire

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Council selling land

    Notice dated 11 May 2026

  4. Dalguise House . Monkstown Road

    Dún Laoghaire · Dún Laoghaire-Rathdown · 3.66 ha · source

    Permission expired

    298 homes, expired 25 Aug 2025

  5. DERELICT, HARVEY NURSING HOME, GLENAGEARY ROAD UPPER, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · 3.11 ha · source

    Derelict site

    Register ref DS: 1705

  6. DERELICT, OLD DUNLEARY HOUSE, DUN LAOGHAIRE, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.74 ha · source

    Derelict site

    Register ref DS: 1714

  7. DERELICT, OLD DUNLEARY HOUSE, DUN LAOGHAIRE, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.31 ha · source

    Derelict site

    Register ref DS: 1714

  8. DERELICT, YORK HOUSE TIVOLI LODGE, YORK ROAD, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS 1450/51

  9. DERELICT, LARABEARG, TIVOLI ROAD NORTH, DUNLAOGHAIRE

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1528

  10. DERELICT, 3 ALBERT ROAD UPPER, GLENAGEARY, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS 1544

  11. DERELICT, TORCA ROAD, DALKEY, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1604

  12. DERELICT, 31 O'DONNELL GARDENS, GLENAGEARY, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1622

  13. DERELICT, HARVEY NURSING HOME, GLENAGEARY ROAD UPPER, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1705

  14. DERELICT, 17 PATRICK STREET, DUN LAOGHAIRE, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1712

  15. DERELICT, OLD DUNLEARY HOUSE, DUN LAOGHAIRE, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS: 1714

  16. DERELICT, 61 GEORGE'S STREET UPPER, DUN LAOGHAIRE, CO.DUBLIN

    Dún Laoghaire · Dún Laoghaire-Rathdown · source

    Derelict site

    Register ref DS 1725

  17. 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

  18. 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

  19. Blackrock College RFC

    Dún Laoghaire · Dún Laoghaire-Rathdown · 5.01 ha · source

    Stalled build

    commenced 10 Sep 2019, no completion certificate, planned end Nov 2019

  20. Adjacent to Castle Close, Dublin, South Dublin

    Dún Laoghaire · Dún Laoghaire-Rathdown · 1.36 ha · source

    Stalled build

    commenced 17 Jul 2020, no completion certificate, planned end Sep 2020

  21. Highline Project (2no additional floors)

    Dún Laoghaire · Dún Laoghaire-Rathdown · 1.33 ha · source

    Stalled build

    commenced 23 Aug 2020, no completion certificate, planned end Jan 2021

  22. 39 Castle Park Road, Dalkey

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.46 ha · source

    Stalled build

    24 homes; commenced 25 Apr 2022, no completion certificate, planned end Aug 2022

  23. Knocknagarm Demolition

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.4 ha · source

    Stalled build

    commenced 26 Aug 2019, no completion certificate, planned end Sep 2019

  24. Pottery Rd Business Park - 3rd Floor

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.34 ha · source

    Stalled build

    commenced 11 Jan 2019, no completion certificate, planned end May 2019

  25. 27A Johnstown Road, Cabinteely, Dún Laoghaire-Rathdown

    Dún Laoghaire · Dún Laoghaire-Rathdown · 0.31 ha · source

    Stalled build

    50 homes; commenced 03 Nov 2020, no completion certificate, planned end Oct 2021

Showing 25 of 484. 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

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.
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).
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: Planning applications (Department of Housing national planning data); Council derelict sites registers (Derelict Sites Act 1990); Council meeting agendas (s.183 disposal notices); Council Residential Zoned Land Tax maps; Land Development Agency, Register of Relevant Lands.

Cite this: How many development sites are there in Dún Laoghaire? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/how-many-development-sites-dun-laoghaire

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