GrantedExtensionDecided 21 May 2026

67, Rowanbyrn, Blackrock, Co. Dublin, A94XW67

Ground floor rear/side extension, first-floor side extension with dormer, and a new rear dormer window.

D25B/0681/WEB · Dun Laoghaire Rathdown County Council · Lodged 7 December 2025

Reference: D25B/0681/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 7 December 2025

Summary

AI-generated

The project involves a 35 sqm ground floor extension to the rear and side, and a 25 sqm first-floor side extension with a new front dormer. It also includes a new first-floor rear dormer window, a new flat roof canopy porch, front rooflights, and a new bin and bicycle store.

Extensionextensiondormerbicycle store

Floor area: 60 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

Alterations and additions to the existing semi-detached house; including for the construction of a ground floor extension of c. 35m2 to the rear and the rear side of the existing house, 1st floor extension of c. 25m2 with new pitched roof to match the existing roof to the side of the existing house with new front dormer window and side window, new 1st floor dormer window extension to the rear of the existing house, alterations to the ground floor front of the existing house to include a new flat roof canopy porch, new velux roof lights to the existing house front roof and all ancillary site works including a new bin and bicycle store to the front of the existing house.

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 Rowanbyrn, Blackrock, Dublin	Jul 2025	€825,000	61 m
117 Rowanbyrn, Blackrock, Co Dublinnot full market price	Sept 2025	€255,109	94 m
Errigal, 1 Rowan Park Ave, Blackrock	Oct 2025	€1,300,000	141 m
23 Rowanbyrn, Blackrock, Dublin	Mar 2026	€772,000	158 m
12 Rockford Park, Blackrock, Co Dublinnot full market price	Aug 2025	€180,000	192 m
19 Brookville Park, Blackrock, Co Dublin	Jul 2025	€886,918	197 m
1 Rockville Park, Blackrock, Co Dublin	Apr 2026	€865,000	211 m
4 Rowan Park, Blackrock, Dublin	Jun 2025	€980,000	218 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 received7 December 2025
Decision due28 May 2026
Decision issued21 May 2026

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