GrantedExtensionDecided 28 May 2026

19 Trimleston Avenue, Blackrock, Co. Dublin, A94XD42

Demolition of a rear shed, construction of a rear extension, front porch, bike store, and roof alterations.

D26B/0209/WEB · Dun Laoghaire Rathdown County Council · Lodged 7 April 2026

Reference: D26B/0209/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Appealed
Type: Permission
Received: 7 April 2026

Summary

AI-generated

The development consists of the demolition of a single-storey rear shed and the construction of a single-storey rear extension and a front porch. It also includes a front bike store and alterations to the existing roof over the garage conversion.

Extensionextensiondemolitionporch

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:1. Demolition of single storey shed to the rear
Single storey ground floor extension with 1no rooflight and canopy to the rear
Single storey porch to the front
Bike store to the front5. Alteration to the existing roof over garage conversion and extension to the side and rear, to include new parapet walls and 2 no rooflights
All associated internal alterations, drainage and ancillary 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
25 Bellevue Court, Dornden Park, Booterstownnot full market price	Jun 2025	€251,674	39 m
23 Bellevue Court, Booterstown, Dublin	Jan 2026	€436,000	39 m
36 Dornden Park, Booterstown, Dublin	Sept 2025	€1,311,000	55 m
3 Trimleston Ave, Booterstown, Dublinnot full market price	Jun 2026	€370,000	120 m
221 Llandaff Terrace, Elm Park, Merrion	Jan 2026	€790,000	157 m
219 Llandaff Terrace, Merrion Road, Dublin 4	Jan 2025	€1,050,000	164 m
55 Trimleston Gardens, Booterstown, Co Dublin	Mar 2026	€1,030,000	255 m
80 Trimleston Gardens, Booterstown, Dublin	Mar 2026	€985,000	265 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 April 2026
Decision due29 May 2026
Decision issued28 May 2026
Appeal submitted22 June 2026

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