GrantedExtensionDecided 13 July 2020

20 Trimleston Drive, Blackrock, Co. Dublin

Demolition of a garage conversion to build single and first-floor extensions, and an attic conversion with dormer windows.

D20B/0090 · Dun Laoghaire Rathdown County Council · Lodged 26 March 2020

Reference: D20B/0090
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 26 March 2020

Summary

AI-generated

The project consists of demolishing an existing single-storey garage conversion. It proposes a new single-storey extension (58 sqm) to the front, side, and rear, a first-floor side extension (23 sqm), and an attic conversion for storage with dormer windows and skylights.

Extensionextensionattic conversiondormer

Floor area: 81 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 for a proposed development. The development will consist of the demolition of existing single storey garage conversion, construction of a new brick clad single storey extension of c. 58m2 to front, side and rear of existing house, construction of 1st floor extension of c. 23m2 to the side with extended roof over, and the conversion of the attic for storage purposes only with dormer windows to the side and rear and new skylights to the front.

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 30 June 2021.

Notified floor area: 81.22 m²

Recent sales nearby

within 500 m

Residential Property Price Register sales within 500 metres of this site
Address	Date	Price	Distance
12 Trimleston Drive, Booterstown, Co Dublin	Jun 2026	€1,075,000	86 m
Apartment 4 Woodbine Park, 4 Woodbine Park, Blackrock	Nov 2025	€350,000	109 m
69 Fosterbrook, Booterstown, Blackrock	Jan 2025	€1,165,000	130 m
20 Trimleston Rd, Booterstown, Dublin	Nov 2025	€1,150,000	133 m
55 Trimleston Gardens, Booterstown, Co Dublin	Mar 2026	€1,030,000	140 m
74 Fosterbrook, Stillorgan Rd, Stillorgan	May 2025	€845,000	144 m
53 Trimleston Gardens, Booterstown, Dublin	May 2025	€1,160,000	156 m
76 Fosterbrook, Stillorgan Rd, Dublin	Dec 2025	€905,000	157 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 received26 March 2020
Decision issued13 July 2020

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