GrantedExtensionDecided 5 June 2026

21 Portersgate Heights, Clonsilla, Dublin 15

Construction of a single-storey rear extension and installation of roof windows and external insulation.

FW26A/0156E · Fingal County Council · Lodged 21 April 2026

Reference: FW26A/0156E
Authority: Fingal County Council
Register status: Decided
Type: Permission
Received: 21 April 2026

Summary

AI-generated

The development consists of a single-storey rear extension with an apex roof incorporating three roof windows. It also includes installing a roof window to the existing kitchen lean-to, applying external insulation to the rear wall, and adding two new clerestory windows.

Extensionextensioninsulationroof lights

Storey: 1

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

The development will consist of the construction of a single-storey extension to the rear with an apex roof incorporating 3 roof windows; the installation of 1 roof window to the existing kitchen lean-to roof; the application of external insulation to the existing rear kitchen wall; the provision of 2 clerestory windows (one in the existing gable and one in the proposed extension) to the south-east facing elevation; and all associated site works.

Land-use zoning

What this land is zoned for

RS - ResidentialRS

“Provide for residential development and protect and improve residential amenity”

National zoning type: Existing residential

Objective set by the The Fingal Development Plan 2023 – 2029 (2023–2029). 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
35 Portersgate Heights, Clonsilla, Dublin 15	Jul 2025	€444,000	43 m
46 Portersgate Heights, Porterstown, Clonsilla Dublin 15	Aug 2025	€535,000	63 m
29 Portersgate Ave, Clonsilla, Dublin 15	May 2025	€485,000	74 m
1 Castlefield Hall, Clonsilla, Dublin15not full market price	Feb 2026	€135,000	116 m
12 Portersgate Way, Clonsilla, Dublin 15	Jan 2025	€535,000	143 m
6 Castlefield Hall, Clonsilla, Dublin 15	Oct 2025	€550,000	148 m
80 Allendale Sq, Clonsilla, Dublin 15	Apr 2026	€320,000	167 m
104 Castlefield Court, Clonsilla, Dublin 15	Apr 2026	€508,000	186 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 received21 April 2026
Decision due16 June 2026
Decision issued5 June 2026

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

Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.

Community

Discussion

What local people think about this application.

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