Part granted, part refusedExtensionDecided 3 September 2021

12 Thornberry Close, Belmont, Stepaside, Dublin, D18N8Y4

Attic conversion for two bedrooms with a rear dormer and a single-storey rear extension in Stepaside.

D21B/0351 · Dun Laoghaire Rathdown County Council · Lodged 12 July 2021

Reference: D21B/0351
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 12 July 2021

Summary

AI-generated

The development consists of a single-storey extension to the rear of the existing house. It also includes an attic conversion to accommodate two bedrooms, featuring a rear dormer window and three Velux windows to the front.

Extensionattic conversionextensiondormer

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: attic conversion for two bedrooms with rear dormer window rear single story extension. Three velux windows to the front.

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.

Built — construction complete

A commencement notice records works starting on 4 May 2023.

Notified floor area: 60 m²

Recent sales nearby

within 500 m

Residential Property Price Register sales within 500 metres of this site
Address	Date	Price	Distance
2 Darley Lane, Belmont, Aiken'S Village	Apr 2026	€745,000	37 m
3 Hyde Road, Belmont, Stepaside	Jul 2025	€805,000	38 m
14 Hyde Road, Belmont, Stepaside	Jan 2025	€730,000	65 m
15 Hyde Road, Belmont Aikens Village, Stepaside	Feb 2025	€721,500	68 m
7 Ferncarrig Ave, Fernleigh, Sandyford	Jun 2026	€600,000	124 m
7 Ferncarrig Ave, Fernleigh, Sandyford	May 2026	€300,000	124 m
2 Verona, Kilgobbin Rd, Sandyford Dublin 18	Jan 2026	€560,000	125 m
5 Greenacres, Old Kilgobbin Road, Sandyford	Jul 2025	€715,000	139 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 received12 July 2021
Decision issued3 September 2021
Appeal submitted29 September 2021
Appeal decided24 March 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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Community

Discussion

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