GrantedExtensionDecided 10 October 2022

26, Thornhill Road, Mount Merrion, Dublin, A94N4V8

Construction of a first-floor extension over an existing ground-floor side extension.

D22A/0613 · Dun Laoghaire Rathdown County Council · Lodged 19 August 2022

Reference: D22A/0613
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 19 August 2022

Summary

AI-generated

The project involves removing the existing fascia, rooflights, and rear chimney stack. A new first-floor extension will be built on the footprint of the ground-floor side extension to accommodate a master bedroom en suite, utility room, study, and a small front balcony.

Extensionextensionrenovation

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

Permission for development. The development will consist of the removal of the existing fascia and rooflights to the single storey extension to the side of the house and porch overhang to the front. The removal of the chimney stack to the rear. The construction of a first floor extension on the same footprint as the ground floor with flat roof and parapet detail to accommodate a master bedroom en suite, utility room, study and small balcony over porch to front with access from study.

Land-use zoning

What this land is zoned for

Objective ARS

“A To provide residential development and improve residential amenity while protecting the existing residential amenities”

Objective set by the 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 plan

Built & 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

Residential Property Price Register sales within 500 metres of this site
Address	Date	Price	Distance
33 Clonmore Rd, Mount Merrion, Dublin	Apr 2026	€1,425,000	114 m
24 South Ave, Mount Merrion, Dublin	Dec 2025	€1,580,000	154 m
28 South Ave, Mount Merrion, Dublin	Sept 2025	€1,400,000	157 m
7 Clonmore Rd, Mount Merrion, Dublin	Sept 2025	€1,400,000	157 m
32 South Ave, Mount Merrion, Dublin	Jan 2026	€1,725,000	164 m
14 South Avenue, Mount Merrion, Co Dublin	Sept 2025	€920,000	174 m
17 Dale Close, Stillorgan	Nov 2025	€920,000	218 m
98 Lr Kilmacud Rd, Stillorgan, Dublin	Jul 2025	€1,187,000	220 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 received19 August 2022
Decision issued10 October 2022

In the area

Applications near this site

Other planning applications within about 500 m — what else is being proposed or built nearby.

Related developments

Similar applications

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