Observation pack · Dún Laoghaire-Rathdown County Council

85 Rosemount Estate, Dundrum, Dublin 14, D14FT04

Planning Permission sought for Single storey extension to rear, second storey…

Observations close 7 Dec 2026 22 days left

5 weeks from receipt (received 2 Nov 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · fee €20 · council decision due 5 Jan 2027

The application

Reference: D26B/0568 · full record
Authority: Dún Laoghaire-Rathdown County Council
Type: Permission
Status: Referral
Site area: 389 m²
Received: 2 Nov 2026
Decision due: 5 Jan 2027

The council’s feed cuts this description short. The full text 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/dunlaoghaire/application-details/?ref=D26B/0568.
Write your observation.Quote D26B/0568 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. Dún Laoghaire-Rathdown County Council takes it online with the submission or at the counter.
Submit before 7 Dec 2026.Online through the register above, or in writing to the Planning Department, Dún Laoghaire-Rathdown 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
R2 Existing residential	Objective A: A To provide residential development and improve residential amenity while protecting the existing residential amenities	county development plan 2022 2028	1 Apr 2022 → 1 Apr 2028
R2 Existing residential	Objective A: A To provide residential development and improve residential amenity while protecting the existing residential amenities	d n laoghaire rathdown county development plan 2022 2028 variation no 1	21 Apr 2022 → 20 Apr 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: Dún Laoghaire-Rathdown County Council development plan zoning · fetched 11 Oct 2026, 23:12

Source	Licence	Fetched	Link
Dún Laoghaire-Rathdown County Council development plan zoning	—	11 Oct 2026, 23:12	open

Designations on or near the site within 100 m

Radon risk area × 1
About 1 in 20 homes in this area is likely to have high radon levels

Nearby precedents within 500 m, last 5 years

Decisions

Reference	Decision	Decided	Distance	Description
D26A/0679/WEB	Refuse permission for retention	2 Nov 2026	146 m	The development consists of which consists of internal alterations to ground flo
D26A/0667/WEB	Request additional information	28 Oct 2026	289 m	Retention permission is for Illuminated signage over the front door of the unit
D26B/0469/WEB	Refuse permission	13 Oct 2026	452 m	A dormer window extension in roof at front & associated works
D26B/0455/WEB	Grant permission	7 Oct 2026	287 m	The development will consist of a part single-storey, part two-storey extension
D26A/0492/WEB	Grant permission	30 Sept 2026	300 m	The development will consist of: the demolition of the existing non-original ext
D26A/0588/WEB	Grant permission	28 Sept 2026	412 m	The development will consist of: (i) the amalgamation of 3 no. ground floor uni
D26B/0515/WEB	Declare application invalid	25 Sept 2026	435 m	The development will consist of the removal of the existing side extension and
D26B/0411/WEB	Grant permission	8 Sept 2026	56 m	1: Demolition of existing single storey rear extension and shed 2: For a new sin

Appeals

ACP case	Type	Outcome	Decided	Distance
502366		open	27 Oct 2026	412 m
501993	Planning Appeal	Invalid	26 Aug 2026	258 m
501841	Planning Appeal	pending	7 Aug 2026	63 m
501835	Planning Appeal	pending	6 Aug 2026	428 m
324032	Appeal - LRD	Granted with conditions	6 May 2026	466 m
500411	Planning Appeal	Refused	6 Mar 2026	452 m
320912	Local Authority EIA Housing	Granted with conditions	22 Dec 2025	350 m
323549	Planning Appeal	open	2 Sept 2025	291 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

2 Nov 2026 New application · observations close 7 Dec 2026

Generated from the Planning Register store; nothing was fetched live for this page. Source: national planning dataset, fetched 10 Nov 2026, 23:01. Not legal advice — confirm the deadline with Dún Laoghaire-Rathdown County Council before relying on it.