GrantedExtensionDecided 12 February 2026

51, Stillorgan Park, Stillorgan, Co. Dublin, A94DE08

Demolition of rear structures and construction of ground and first-floor extensions in Stillorgan.

D25B/0702/WEB · Dun Laoghaire Rathdown County Council · Lodged 15 December 2025

Reference: D25B/0702/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 15 December 2025

Summary

AI-generated

The project involves the demolition of ground-floor rear structures and a shed, followed by the construction of a single-storey rear extension and a small first-floor rear extension. It also includes external insulation, internal alterations, and a new front canopy.

Extensionextensiondemolitionrenovation

Floor area: 58 m²

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 is sought for the demolition of ground floor rear structures (totalling approx. 18sqm), the demolition of the rear shed, the demolition of chimney stack, the construction of a ground floor single-storey extension to the rear with flat roof (floor area approx. 52sqm) and the construction of a first floor extension to the rear with pitched roof (floor area approx. 6sqm). The development will also include externally insulating the retained house (render and brick slip finish), alterations to internal layouts, construction of canopy to front, additional window opes and changes to selected existing window opes, proposed rooflights and all associated site works.

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
50 Stillorgan Park, Blackrock, Co Dublin	Apr 2025	€1,630,000	20 m
53 Stillorgan Park, Blackrock, Dublin	Oct 2025	€1,325,000	40 m
El Jadida, Stillorgan Park, Blackrock	May 2026	€1,730,000	89 m
41 Stillorgan Park, Blackrock, Dublin	Jul 2025	€2,806,000	125 m
18 Cloister Ave, Blackrock, Dublin	Oct 2025	€700,000	128 m
41 Cloister Ave, Blackrock, Dublin	Feb 2025	€853,000	143 m
43 Cloister Ave, Blackrock, Dublin	Feb 2026	€826,500	153 m
27 Cloister Way, Carysfort Ave, Blackrock	Oct 2025	€810,000	154 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 received15 December 2025
Decision due17 February 2026
Decision issued12 February 2026

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