Part granted, part refusedAlterationsDecided 30 March 2026

10, Longford Terrace, Monkstown, Dublin, A94XY98 (A Protected Structure)

Conservation repairs, internal alterations, and a new rear extension to a protected terrace house.

D26A/0068/WEB · Dun Laoghaire Rathdown County Council · Lodged 5 February 2026

Reference: D26A/0068/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 5 February 2026

Summary

AI-generated

The development at this protected structure consists of conservation-based repairs, internal alterations, and a new single-storey ground floor extension to the rear. Works include repairing the front granite steps, creating a new storage area under the driveway, and lowering the floor level for a gym.

Alterationsconservationprotected structureextension

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 conservation-based repair works, internal alterations and the construction of a new single storey extension at ground floor level to the rear of the existing house and side of existing return comprising of
Repair and restoration of existing granite front steps
Construction of a new storage area under front driveway accessed from front lower ground floor lightwell
Installation of a new glazed entrance door into lower ground floor vestibule under front steps
Internal alterations to lower ground floor layout including new opening in central spine wall between proposed cinema room and gym areas, lowering of floor level to proposed gym area, removal of non-original partitions and construction of new partition between proposed cinema room and proposed utility / boot room, removal of existing non-original partitions around existing stairwell and making good existing staircase
Removal of existing non original door and window between proposed gym and rear lightwell and blocking up opening
Construction of new single storey extensions at ground floor level extending over existing lightwell, terrace and plant room
Alterations to existing non-original return including removal of existing first floor slab to create double height space, substantial removal of existing eastern elevation external wall and replacement and raising of roof to encompass the existing original arched window feature
Construction of a covered terrace, privacy screening and external steps extending into rear garden
Removal of existing sash window, granite sill, apron and base panels to create new access from existing kitchen into new extension with conservation and restoration of existing joinery
Removal of existing partitions around stairwell and modifications to existing return to reinstate original openings between hall and proposed extension
Reinstatement of existing opening (previously blocked) between existing kitchen and lounge including installation of sliding doors
Opening up new doorway from first floor landing into master bedroom and blocking up existing arched opening
Modification and repair of existing rooftop access hatch to create new rooflight and roof access above landing
All associated site, ancillary, decoration and conservation works

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
10 Longford Terrace, Monkstown, Dublin	Aug 2025	€4,025,000	7 m
15a The Mews, Longford Terrace, Monkstown	Dec 2025	€800,000	52 m
Apt 10 - Salthill, Monkstown, Blackrock	Apr 2026	€905,000	115 m
13 Salthill Apts, Monkstown, Co Dublin	May 2025	€595,000	123 m
Apt 17, Salthill Apts, Monkstown	Oct 2025	€610,000	123 m
21 Salthill Apts, Monkstown, Dublin	Mar 2025	€1,050,000	129 m
Apt 32 Salthill, Seapoint Ave, Blackrock	Feb 2025	€630,000	163 m
Longford Lodge, 25 Monkstown Crescent, Monkstown Blackrock	Mar 2026	€1,350,000	166 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 received5 February 2026
Decision due2 April 2026
Decision issued30 March 2026

In the area

Applications near this site

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Related developments

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