What are the largest development sites in Fingal?
1,269 development sites in Fingal are a hectare or larger, as of 25 Sep 2026. The largest is land in Balbriggan, at 47.5 ha (on the rzlt map (3% land tax)).
From public registers, checked 25 Sep 2026. Updated nightly.
Sites of a hectare or more in Fingal, largest first
Land in Balbriggan
Balbriggan · Fingal · 47.51 ha · source
On the RZLT map (3% land tax)
47.5 ha, On the 2027 draft RZLT map
Land in Swords
Swords · Fingal · 47.44 ha · source
On the RZLT map (3% land tax)
47.4 ha, On the 2027 draft RZLT map
Land in Howth-Malahide
Howth-Malahide · Fingal · 44.33 ha · source
On the RZLT map (3% land tax)
44.3 ha, On the 2027 draft RZLT map
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 38.9 ha · source
Publicly owned land
38.9 ha, Held by The Industrial Development Authority
Portmarnock
Howth-Malahide · Fingal · 38.44 ha · source
Publicly owned land
38.4 ha, Held by Fingal County Council
Land in Rush-Lusk
Rush-Lusk · Fingal · 35.49 ha · source
On the RZLT map (3% land tax)
35.5 ha, On the 2027 draft RZLT map
Public land in Castleknock
Castleknock · Fingal · 32.41 ha · source
Publicly owned land
32.4 ha, Held by The Office of Public Works
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 31.27 ha · source
Publicly owned land
31.3 ha, Held by Fingal County Council
Barberstown
Ongar · Fingal · 29.59 ha · source
Permitted, not started
1243 homes granted 30 Mar 2023, expires 30 Mar 2033
Hollywoodrath, Hollystown, Dublin 15
Blanchardstown-Mulhuddart · Fingal · 28.54 ha · source
Stalled build
455 homes; commenced 24 Jul 2015, no completion certificate, planned end Jul 2016
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 27.33 ha · source
Publicly owned land
27.3 ha, Held by Dublin City Council
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 26.9 ha · source
Publicly owned land
26.9 ha, Held by Dublin City Council
Land in Rush-Lusk
Rush-Lusk · Fingal · 25.17 ha · source
On the RZLT map (3% land tax)
25.2 ha, On the 2027 draft RZLT map
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 25.15 ha · source
Publicly owned land
25.2 ha, Held by Electricity Supply Board
Land in Howth-Malahide
Howth-Malahide · Fingal · 24.4 ha · source
On the RZLT map (3% land tax)
24.4 ha, On the 2027 draft RZLT map
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 24.33 ha · source
Publicly owned land
24.3 ha, Held by Fingal County Council
Land in Howth-Malahide
Howth-Malahide · Fingal · 23.49 ha · source
On the RZLT map (3% land tax)
23.5 ha, On the 2027 draft RZLT map
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 22.75 ha · source
On the RZLT map, no permission
22.8 ha, RZLT-liable and no live permission for 10+ homes on it
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 20.43 ha · source
Publicly owned land
20.4 ha, Held by Institute of Technology Blanchardstown
ICU Department, Level 3, Connolly Hospital
Blanchardstown-Mulhuddart · Fingal · 20.32 ha · source
Stalled build
commenced 15 Nov 2020, no completion certificate, planned end Nov 2020
Land in Balbriggan
Balbriggan · Fingal · 20.32 ha · source
On the RZLT map (3% land tax)
20.3 ha, On the 2027 draft RZLT map
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 19.47 ha · source
Publicly owned land
19.5 ha, Held by Health Service Executive
Land in Howth-Malahide
Howth-Malahide · Fingal · 19.27 ha · source
On the RZLT map (3% land tax)
19.3 ha, On the 2027 draft RZLT map
Public land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 19.07 ha · source
Publicly owned land
19.1 ha, Held by Dublin City Council
Land in Balbriggan
Balbriggan · Fingal · 17.18 ha · source
On the RZLT map, no permission
17.2 ha, RZLT-liable and no live permission for 10+ homes on it
Showing 25 of 1,269. See them all →
Go further
New development sites in Fingal, 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 Fingal
- Is there development land for sale in Fingal?
- Buildable found 209 sites in Fingal with a public sign they could come to market, as of 25 Sep 2026: 91 council sites proposed for sale, 13 sites with planning permission running out or recently expired, 27 derelict sites on the register and 101 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.
- How many development sites are there in Fingal?
- Buildable tracks 4,172 development sites in Fingal, 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, 17 permitted schemes not started, 56 derelict sites, 111 council land sales and 101 stalled builds.
- Where are the derelict sites in Fingal?
- Fingal has 27 sites on the council's derelict sites register, as of 25 Sep 2026. 24 of them list a market value, €9 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 Fingal?
- The derelict sites levy is 7% of a registered site's market value, every year. The Fingal register lists 27 sites; 24 show a market value, €9 million together, which at 7% is €629,447 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 Fingal? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/largest-development-sites-fingal
Facts from public registers, not advice. Every question · How it works