How much zoned land in Blanchardstown, Castleknock and Ongar has no planning permission?
991 ha in Blanchardstown, Castleknock and Ongar is zoned for housing, on the RZLT map and has no live permission for 10 or more homes: 1,038 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.
From public registers, checked 25 Sep 2026. Updated nightly.
- 991 haZoned, no permission
- 1,038Parcels
The largest zoned parcels with no permission in Blanchardstown, Castleknock and Ongar
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
Land in Castleknock
Castleknock · Fingal · 10.13 ha · source
On the RZLT map, no permission
10.1 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 9.39 ha · source
On the RZLT map, no permission
9.4 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 8.58 ha · source
On the RZLT map, no permission
8.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Ongar
Ongar · Fingal · 8.4 ha · source
On the RZLT map, no permission
8.4 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 8.06 ha · source
On the RZLT map, no permission
8.1 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 7.84 ha · source
On the RZLT map, no permission
7.8 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 7.27 ha · source
On the RZLT map, no permission
7.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 7.22 ha · source
On the RZLT map, no permission
7.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 6.71 ha · source
On the RZLT map, no permission
6.7 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 6.44 ha · source
On the RZLT map, no permission
6.4 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 6.1 ha · source
On the RZLT map, no permission
6.1 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.72 ha · source
On the RZLT map, no permission
5.7 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.52 ha · source
On the RZLT map, no permission
5.5 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.35 ha · source
On the RZLT map, no permission
5.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.3 ha · source
On the RZLT map, no permission
5.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 5.3 ha · source
On the RZLT map, no permission
5.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.26 ha · source
On the RZLT map, no permission
5.3 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 5.21 ha · source
On the RZLT map, no permission
5.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.19 ha · source
On the RZLT map, no permission
5.2 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Ongar
Ongar · Fingal · 5.03 ha · source
On the RZLT map, no permission
5.0 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 5.01 ha · source
On the RZLT map, no permission
5.0 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Castleknock
Castleknock · Fingal · 4.68 ha · source
On the RZLT map, no permission
4.7 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Blanchardstown-Mulhuddart
Blanchardstown-Mulhuddart · Fingal · 4.62 ha · source
On the RZLT map, no permission
4.6 ha, RZLT-liable and no live permission for 10+ homes on it
Land in Ongar
Ongar · Fingal · 4.45 ha · source
On the RZLT map, no permission
4.5 ha, RZLT-liable and no live permission for 10+ homes on it
Showing 25 of 1,038. 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 Blanchardstown, Castleknock and Ongar
- Is there development land for sale in Blanchardstown, Castleknock and Ongar?
- Buildable found 62 sites in Blanchardstown, Castleknock and Ongar with a public sign they could come to market, as of 25 Sep 2026: 26 council sites proposed for sale, 2 sites with planning permission running out or recently expired, 2 derelict sites on the register and 41 stalled builds. These come from public registers, not agents' listings, so many are not advertised yet.
- How many development sites are there in Blanchardstown, Castleknock and Ongar?
- Buildable tracks 1,663 development sites in Blanchardstown, Castleknock and Ongar, 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 9 permitted schemes not started, 13 derelict sites, 32 council land sales and 41 stalled builds.
- What are the largest development sites in Blanchardstown, Castleknock and Ongar?
- 484 development sites in Blanchardstown, Castleknock and Ongar are a hectare or larger, as of 25 Sep 2026. The largest is public land in Blanchardstown-Mulhuddart, at 38.9 ha (publicly owned land).
- How much land in Blanchardstown, Castleknock and Ongar is on the RZLT map?
- 1,104 ha of land in Blanchardstown, Castleknock and Ongar is on the Residential Zoned Land Tax map, across 1,093 parcels (2027 draft RZLT map), as of 25 Sep 2026. 991 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.
Data as of 25 Sep 2026. Sources: Council Residential Zoned Land Tax maps.
Cite this: How much zoned land in Blanchardstown, Castleknock and Ongar has no planning permission? Buildable, data as of 25 Sep 2026. https://buildable.ie/q/zoned-land-without-permission-dublin-15
Facts from public registers, not advice. Every question · How it works