Blackthorn Hill, Coolmine, Saggart, Co. Dublin
Construction of a two-storey split-level extension to an existing cottage.
SD21B/0041 · South Dublin County Council · Lodged 2 September 2021
- Reference
- SD21B/0041
- Authority
- South Dublin County Council
- Register status
- Decided
- Type
- Permission
- Received
- 2 September 2021
- Floor area
- 143 m²
Summary
AI-generatedThe development consists of a two-storey split-level extension to the existing cottage at Blackthorn Hill, along with all associated site works.
- Storeys
- 2
Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.
Official record
Development description
Two storey split level extension to existing cottage and all associated site works.
Land-use zoning
What this land is zoned for
“To protect and enhance the outstanding natural character of the Dublin Mountains Area”
National zoning type: Conservation, amenity or buffer space, corridor/belt, landscape
Objective set by the South Dublin County Development Plan 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.
Read the zoning objectives in the development planBuilt & sold
What happened next
Beyond the decision: whether this development was built, and what property here has sold for.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| Ardaragh, Red Gap, Rathcoole | May 2026 | €1,175,000 | 184 m |
Nearby properties, not this site — a guide to local values.
Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.
Key dates
Timeline
- Application received2 September 2021
- Further information requested26 March 2021
- Further information received2 September 2021
- Decision due29 September 2021
- Decision issued29 September 2021
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- RefusedAt this site
Single storey extension to existing cottage. Temporary single storey dwelling for the duration of…
Blackthorn Hill, Coolmine, Saggart, Co. Dublin
SD20B/0309South DublinLodged 25 Aug 2020Extension
- GrantedAt this site
Alterations to the existing roof structure of existing habitable dwelling; construction of a single storey…
Blackthorn Hill, Coolmine, Saggart, Co. Dublin
SD22B/0178South DublinLodged 10 Mar 2023Extension
- Invalid70 m away
Retention for living room, bedroom en-suite, revised design for extension to house as permission granted 14th…
"Windfall", Coolmine, Saggart, Co. Dublin
SD09B/0263South DublinLodged 1 Jul 2009Retention
- Granted70 m away
Retention of existing first floor study/store room and bathroom
"Windfall", Coolmine, Saggart, Co. Dublin
SD09B/0317South DublinLodged 10 Aug 2009Retention
- Refused100 m away
Detached single storey, three bedroom dwelling with sedum roof with photovoltaic panel above and a north…
Crockaunadreenagh, Rathcoole, Co. Dublin
SD17A/0204South DublinLodged 21 Jun 2017New dwelling
- Granted100 m away
Conservatory
Crockaunadreenagh, Rathcoole, Co. Dublin.
S99B/0445South DublinLodged 7 Jul 1999
- Refused100 m away
Detached single storey, three bedroom dwelling with a new vehicular entrance; Biocycle waste water treatment…
Crockaunadreenagh, Rathcoole, Co. Dublin
SD16A/0158South DublinLodged 13 May 2016New dwelling
- Granted220 m away
Change of use from agriculture to pitch and putt course
Coolmine, Saggart, Co.Dublin.
S00A/0832South DublinLodged 27 Mar 2001Change of use
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- Awaiting decisionExtension
Extension to existing cottage and all associated site works
River cottage , Pickardstown , Tramore
19160WaterfordLodged 12 Mar 2019
- Awaiting decisionExtension
A two storey extension to existing single storey cottage, plan changes, elevational changes, modifications,…
No. 4 Red Cottage, Ardkilly, Sandy Cove, Kinsale, Co.Cork
167320corkLodged 29 Dec 2016
- GrantedExtension
A split level extension to side of existing cottage together with a garage and ancillary site works
Ballintlea , Kilrossanty , Co. Waterford
17446WaterfordLodged 23 Jun 2017
- GrantedExtension
For new 2 storey extension to existing cottage with associated site works
An Chreig Bhuí , Lambert Cottage , Claregalway Co. Galway
2660639galwayLodged 27 Apr 2026
- Awaiting decisionExtension
Construct a two storey extension to existing single storey cottage, site entrance and all associated site…
Bohadoon South , Kilgobinet , Co. Waterford
16118WaterfordLodged 29 Feb 2016
- RefusedExtension
Construction of part single storey/part two storey extension to an existing dwelling and refurbishment works…
Woodside Cottage, Poulacurry South, Glanmire, County Cork
187288corkLodged 13 Dec 2018
Community
Discussion
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