Williamstown
Williamstown is a townland in the civil parish of Booterstown, barony of Rathdown, Co. Dublin. Its name in Irish is Baile Liam.
Parcel 5497451
- Area
- 593 m²
- Buildings
- 4 buildings touch it. Their footprint covers 333 m².
- Zoning
- R2 Objective A (COUNTY DEVELOPMENT PLAN 2022-2028) The objective
- Townland
- Williamstown
Planning applications on this parcel
4 Mar 2025Grant permission
The development will consist of the demolition of an existing garage to the rear
Permission · Dun Laoghaire Rathdown County Council, D25A/0168/WEB
19 Sept 2024S5 dec exempt
Installation of 9no. Solar panels on roof of 27 Mount Merrion Avenue
Section 5 · Dun Laoghaire Rathdown County Council, REF10824
13 Oct 2023Grant permission
Creation of a new opening in the rear wall at ground floor level, the constructi
Permission · Dun Laoghaire Rathdown County Council, D23A/0649
3 Feb 2023Grant permission
Demolition of existing single storey split level bathroom and associated extern
Permission · Dun Laoghaire Rathdown County Council, D23A/0070
Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.
Designated sites
No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches this parcel.
Recorded monuments around it
No zone of notification of a recorded monument touches this parcel.
Architectural heritage
No building of the National Inventory of Architectural Heritage stands on this parcel.
Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).
Ground and risks
- Radon
- At the centre of this parcel, about 1 in 20 homes in this area is likely to have high radon levels. Testing a home
- Landslides
- The 1:50,000 map rates the landslide susceptibility here as low.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_3283 (ZIP).
- Flooding
- The Office of Public Works publishes its flood maps on floodinfo.ie.
Radon Risk Map of Ireland, Environmental Protection Agency, and Landslide Susceptibility Classification, Geological Survey Ireland, both under CC BY 4.0. LiDAR: contains Irish Public Sector Data (Geological Survey Ireland & the Office of Public Works) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.
Download this parcel as DXF, in Irish Transverse Mercator metres, with its neighbours and buildings, for a drawing program. GeoJSON, in WGS 84, suits a map, and KML opens in Google Earth.
Registered freehold land, Tailte Éireann, CC BY 4.0. A parcel is the land of a title, not an address. The owner's name is in the Land Registry of Tailte Éireann: a copy of the folio can be ordered on landdirect.ie, for a fee.
- Area
- 45.5 ha
- 113 acres
- Land parcels
- 47
- registered freehold, median 543 m²
- Zoning
- R2
- Objective A
- Planning
- 100
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
47 registered freehold parcels lie mostly in Williamstown, from 13 m² to 10,335 m² (1.03 ha, 2.55 acres). The dashed line is the townland's boundary. 0 neighbouring parcels touch it.
Download the townland as DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings, or as GeoJSON or KML.
Zoning
Development plans, national zoning
- R2Objective A (Existing residential)
COUNTY DEVELOPMENT PLAN 2022-2028, Dún Laoghaire–Rathdown · 35 parcels The zoning objective in the plan - S5Objective SNI (Mixed/general community services/facilities uses)
COUNTY DEVELOPMENT PLAN 2022-2028, Dún Laoghaire–Rathdown · 5 parcels The zoning objective in the plan - M3Objective NC (District, neighbourhood centre)
COUNTY DEVELOPMENT PLAN 2022-2028, Dún Laoghaire–Rathdown · 5 parcels The zoning objective in the plan - G1Objective F (Open space, park)
COUNTY DEVELOPMENT PLAN 2022-2028, Dún Laoghaire–Rathdown · 0 parcels The zoning objective in the plan
Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.
Planning applications
Sites that touch the townland, newest first
10 Sept 2026Assessment period
The proposed development will amend extant planning permission DLRCC Reg. Ref. D
Permission · Dun Laoghaire Rathdown County Council, D26A/0683/WEB
17 Aug 2026S5 dec exempt
The proposed works comprise of the temporary removal of 1 no. gate pier and gate
Section 5 · Dun Laoghaire Rathdown County Council, REF12326
6 Aug 2026Assessment period
The proposed development consists of a single-storey garden room extension at gr
Permission · Dun Laoghaire Rathdown County Council, D26A/0591/WEB
29 Jul 2026Declare application invalid
A single-storey garden room extension at ground floor level to the rear of No. 5
Permission · Dun Laoghaire Rathdown County Council, D26A/0572/WEB
17 Jul 2026Grant permission
-Construction of new single storey extension to the side at first floor level.
Permission · Dun Laoghaire Rathdown County Council, D26B/0414/WEB
3 Jul 2026Grant permission
Development consisting of ancillary works to park lodge (a protected st
Permission · Dun Laoghaire Rathdown County Council, D26A/0505/WEB
22 May 2026Registered application
73 mobility hub sites across the Council's administrative area
Part vlll (public consultation) · Dun Laoghaire Rathdown County Council, PC/IC/01/26
1 May 2026Clarification of further information
Planning permission for development at this site of c.1.1 ha at “St Catherine’s”
Permission · Dun Laoghaire Rathdown County Council, D26A/0334/WEB
21 Apr 2026Grant permission
The development will consist of: 1. Formation of a car port to the end of the re
Permission · Dun Laoghaire Rathdown County Council, D26A/0302/WEB
13 Apr 2026Grant certificate of exemption
2
Certificate of exemption - part v · Dun Laoghaire Rathdown County Council, V/030/26
7 Apr 2026Refuse permission
(i) construction of 2 no. three-storey, four-bedroom detached dwellings to the
Permission · Dun Laoghaire Rathdown County Council, D26A/0269/WEB
4 Mar 2026Grant permission
Permission is sought for the construction of a 1615m2 multi-sport enclosure for
Permission · Dun Laoghaire Rathdown County Council, D26A/0164/WEB
27 Feb 2026S5 dec exempt
No work required This Section 5 Declaration relates only to change of use from R
Section 5 · Dun Laoghaire Rathdown County Council, REF2426
27 Feb 2026Grant permission
A) Removal of non-original internal partitions, reconfiguration of the internal
Permission · Dun Laoghaire Rathdown County Council, D26A/0146/WEB
5 Dec 2025Grant permission & refuse permission
Planning permission and temporary planning permission for development at this si
Permission · Dun Laoghaire Rathdown County Council, D25A/0939/WEB
11 Nov 2025Refuse permission
An addition of a second floor/attic conversion, to include a pitched slate roof
Permission · Dun Laoghaire Rathdown County Council, D25B/0631/WEB
15 Oct 2025Grant permission
The application seeks permission for the construction of an additional c. 554 sq
Permission · Dun Laoghaire Rathdown County Council, D25A/0784/WEB
8 Oct 2025Grant permission
The development consists of the demolition of existing garage to side, and the
Permission · Dun Laoghaire Rathdown County Council, D25B/0572/WEB
6 Oct 2025Grant permission
The development will consist of the following: Removal of an existing storage sh
Permission · Dun Laoghaire Rathdown County Council, D25B/0567/WEB
14 Aug 2025Grant permission
(i) The demolition of 2 existing shed structures with a total combined area of 5
Permission (lrd) · Dun Laoghaire Rathdown County Council, LRD25A/0637/WEB
11 Aug 2025Declare application invalid
The development will consist of: (i) the demolition of 2 existing shed structu
Permission (lrd) · Dun Laoghaire Rathdown County Council, LRD25A/0624/WEB
30 May 2025Grant permission
Single storey extensions and alterations to the rear of an existing two
Permission · Dun Laoghaire Rathdown County Council, D25B/0305
2 May 2025Grant permission
The development will consist of: The construction of a 797m2 new swimming pool f
Permission · Dun Laoghaire Rathdown County Council, D25A/0355/WEB
25 Mar 2025S5 dec exempt
The proposed works consist of 1no. new external ramp and a new 100 sq.m. Soft P
Section 5 · Dun Laoghaire Rathdown County Council, REF5025
7 Mar 2025Grant permission
Permission is sought for (A) The removal of the existing two-storey return (part
Permission · Dun Laoghaire Rathdown County Council, D25A/0181
The 25 most recent of over 100 applications.
Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.
Nature and heritage
Designated sites and recorded monuments
Designated sites
No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Williamstown.
Recorded monuments
- DU023-004 Castle - tower house
Description
Situated on the present site of a late 18th century house at the junction of Pembroke Cottages and Booterstown Avenue near Booterstown marsh. Named on the OS 1843 edition as 'Booterstown Cas'. Booterstown Castle was built in the first half of the 15thcentury by the Fitzwilliam family on the site of acastle. According to the Patent Rolls (13 Hen VI) Philip Fitzwilliam petitioned the king to provide funds to fortify a castle which had been destroyed in the beginning of the 15th-century (Ball 1900, 310). In the early 17th century it was held by Sir William Ryves, Attorney General and in 1619 after the Restoration the castle was occupied by a family called Reyly. Vaults belonging to the 15th century, are said to have been incorporated into a house that occupies the site. No visible surface trace. Compiled by: Geraldine Stout and Padraig Clancy Revised upload on: 28 July 2018
Architectural heritage
No building of the National Inventory of Architectural Heritage stands in the townland of Williamstown.
Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).
Ground and risks
Radon, landslides, flooding
- Radon
- At the centre of the townland of Williamstown, about 1 in 20 homes in this area is likely to have high radon levels. Testing a home
- Landslides
- The 1:50,000 map rates the landslide susceptibility here as low, partly inferred.
- Terrain model
- LiDAR of the Office of Public Works, flown in 2011, at 2 m: tile OPW_3283 (ZIP).
- Flooding
- The Office of Public Works publishes its flood maps on floodinfo.ie.
Radon Risk Map of Ireland, Environmental Protection Agency, and Landslide Susceptibility Classification, Geological Survey Ireland, both under CC BY 4.0. LiDAR: contains Irish Public Sector Data (Geological Survey Ireland & the Office of Public Works) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.
Homes sold
Property Price Register
No address of the register names Williamstown with five sales or more. The sales of the area are on the page of Co. Dublin.
The townland
- Name
- Williamstown · Baile Liam
- Area
- 455,364 m² (45.54 ha, 112.52 acres)
- Civil parish
- Booterstown, and its townlands
- Barony
- Rathdown
- Electoral division
- Blackrock-Williamstown, the unit of the census
- Census 2022
- 2,876 people lived in 1,060 households in the Blackrock-Williamstown electoral division. 59% of households owned their home. 13% of homes were built since 2001. 7% of dwellings stood vacant on census night, and 2% were holiday homes.
- Neighbouring townlands
- Blackrock, Booterstown, Intake, Merrion
- Placenames
- Williamstown on logainm.ie, the Placenames Database of Ireland
Townlands, civil parishes, baronies and electoral divisions, National Statutory Boundaries, Tailte Éireann, CC BY 4.0. Census 2022, Small Area Population Statistics by electoral division, Central Statistics Office, CC BY 4.0. A townland is the smallest land division of Ireland, and the unit of a rural address. Old registers such as the 1901 and 1911 censuses file it under its civil parish and barony.