Observation pack · South Dublin County Council

Tearmainn, Slieve Thuol, Brittas, Dublin, D24 EY10

Retention of a basement as a home office, with gym, sauna, and shower room, a front entrance porch on the southern façade with enlarged balcony, in-plane roof lights rather than dormer windows, and various internal layout changes requiring alterations to the shape and size of some windows at the existing house previously granted planning permission under Reg. Ref SD05A/1017.

Observations close 28 Sept 2026 16 days left

5 weeks from receipt (received 24 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · fee €20 · council decision due 21 Sept 2026

The application

Reference: SD26B/0147W · full record
Authority: South Dublin County Council
Type: Retention
Status: AI Received
Applicant: not published by the national dataset — see the council register
Units: —
Floor area: —
Site area: 6,897 m²
Received: 24 Aug 2026
We first saw it: 11 Sept 2026, 18:51
Decision due: 21 Sept 2026
Decision: not yet decided

The national dataset truncates descriptions (80 characters for DLR, 70 for Fingal) and omits the applicant. The full description and the drawings are on the council register linked in step 1.

How to submit an observation

Read the file on the council register.Drawings, planning statement and site notices are at https://planning.agileapplications.ie/southdublin/application-details/70081.
Write your observation.Quote SD26B/0147W at the top, give your name and the address the authority should reply to, and confine it to planning matters — zoning objective, height, overlooking, traffic, drainage, heritage. What you say here is what you can later appeal on.
Pay the €20 fee.Every submission needs it; without it the observation is invalid and is returned. South Dublin County Council takes it online with the submission or at the counter.
Submit before 28 Sept 2026.Online through the register above, or in writing to the Planning Department, South Dublin County Council. The test is the date the authority receives it, not the date you post it.
Keep the acknowledgement.The council's receipt is your proof of a valid observation — see below.

Statutory basis. Section 34(1) of the Planning and Development Act 2000 (as amended) requires a planning authority to consider any submission or observation made to it in accordance with the Regulations. Article 29 of the Planning and Development Regulations 2001 (as amended) sets the window: a submission or observation must be received by the authority within five weeks beginning on the date of receipt of the application, and must be accompanied by the prescribed fee of €20. A submission received after the window, or without the fee, is invalid and the authority must return it.

After you submit: keep the acknowledgement. Under the 2024 Act it secures your right to appeal — only the applicant and a person who made a valid observation may bring the council's decision to An Coimisiún Pleanála, within four weeks of the decision. Making a valid observation is also what buys a right of appeal: under s.37(1) of the 2000 Act, only the applicant and a person who made a valid submission or observation to the planning authority may appeal the decision to An Coimisiún Pleanála (within four weeks of the decision). Missing the five-week window closes both doors.

What the site is zoned

Code	Objective	Plan	In force
G3 High amenity	HA-DM: To protect and enhance the outstanding natural character of the Dublin Mountains Area	SD-001:DP:south-dublin-county-development-plan-2022-2028	8 Mar 2022 → 8 Mar 2028

An application that accords with the zoning objective is hard to resist on principle; one that does not may be a material contravention, which the council can only grant by the s.34(6) procedure with its own notice and window.

Source: SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028 · fetched 11 Sept 2026, 23:18

Source	Licence	Fetched	Link
SDCC SD-001:DP:south-dublin-county-development-plan-2022-2028	—	11 Sept 2026, 23:18	open

Designations on or near the site

Radon risk area × 2
About 1 in 10 homes in this area is likely to have high radon levels · About 1 in 5 homes in this area is likely to have high radon levels

Nearby precedents within 500 m, last 5 years

Decisions

Reference	Decision	Decided	Units	Distance	Description
SD25A/0163	Invalidate application	18 Jul 2025	1	52 m	The development will consist of retention permission and permission sought for demolition of existing non-habitable bungalow and the construction of a new dwelling with attic conversion plus a temporary permission for a mobile home on site until completion of works and all associated site works
ED24/0010	Declared not exempt	19 Mar 2024	—	270 m	The Conversion of an existing disused stable block into two residential units of circa 65sq meters each for the purpose of placing into the long term rental market. The conversion of a derelict shed into a single rental unit of circa 60sq meters for the purpose of placing into the long term rental market.
SD22B/0381	Refuse permission & refuse retention	20 Oct 2022	—	157 m	43sqm single storey and part 2 extension to the side and rear of the house to accommodate independent living and a safe environment for a child with intellectual and physical disabilities. This will include a disabled bathroom, bedroom and treatment room. Widening of existing internal doors to accommodate wheelchair access throughout, a new wastewater treatment plant and retention permission for ground floor extensions to west and south sides of the house and conversion of attic rooms to habitable space with rooflights to front and rear.
SD22B/0098	Refuse permission & refuse retention	25 Apr 2022	—	157 m	Permission for the construction of a single storey extension to the south side of the house, internal alteration, waste water treatment unit and all ancillary works. Retention permission is sought for a ground floor extension to the west side of the house, 1.5 storey extension to the south side of the house, attic rooms over the original house and approved extension to the north and roof windows to the front and rear.
SD22B/0009	Invalid - site notice	7 Feb 2022	—	157 m	Permission for the construction of a single storey extension to the south side of the house, internal alteration, waste water treatment unit and all ancillary works. Retention permission is sought for a ground floor extension to the west side of the house, 1.5 storey extension to the south side of the house, attic rooms over the original house and approved extension to the north and roof windows to the front and rear.
SD21B/0460	Refuse permission	21 Oct 2021	—	59 m	Construct a single storey structure with an 'A' type roof to house a domestic family gym with a hot tub and shower rooms; all ancillary ground works in connection with the above. The proposed new structure will sit on top of an existing blockwork structure (Type A) with a flat concrete roof; roof level is at the yard level of the house and general yard, as described in the Grant of Permission for Retention recently issued under Planning Reference SD21A/0093.
SD21B/0425	Grant permission	22 Sept 2021	—	421 m	Construction of a new single storey flat roof extension at ground floor & enlargement of 2 existing dormers at attic level all to the rear of existing dwelling including all associated site development works.

Appeals

ACP case	Type	Outcome	Decided	Distance
315119	Planning Appeal	Refused	28 Aug 2023	157 m

If neighbours here have appealed before and lost, the inspector's report on that case is the single most useful thing to read.

What has happened on this file

26 May 2026 Further information requested
24 Aug 2026 New application · observations close 28 Sept 2026
24 Aug 2026 Further information received

Generated from the Planning Register store; nothing was fetched live for this page. Source: national planning dataset, fetched 11 Sept 2026, 18:51. Not legal advice — confirm the deadline with South Dublin County Council before relying on it.