GrantedExtensionDecided 25 May 2026

18, Greenfield Road, Mount Merrion, Dublin, A94A0W7

Demolition of a garage and sunroom to build a new porch, side and rear extensions in Mount Merrion.

D26B/0196/WEB · Dun Laoghaire Rathdown County Council · Lodged 2 April 2026

Reference: D26B/0196/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 2 April 2026

Summary

AI-generated

The project involves demolishing an existing side garage, rear sunroom, and shed. It will be replaced with a new front porch, a single-storey side and rear extension, a first-floor rear bay window, and associated rooflights.

Extensiondemolitionextensionrenovation

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: (i) demolition of the existing single-storey garage to the west (side) of the dwelling, together with the glazed sunroom and shed to the south (rear); (ii) construction of a single-storey pitched-roof porch to the north (front) elevation; (iii) construction of a single-storey flat roof extension to the west (side) and south (rear); (iv) construction of bay window extension with pitched roof to 1st floor level at south (rear) facade; (v) installation of velux rooflights to the north (front) and west (side) roof slopes; (vi) reduction in size of a first-floor window to the west (side) elevation; (vii) formation of a 1-metre-wide side passage to provide rear access; and (viii) all associated site development 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
18 Greenfield Road, Mount Merrion, Blackrock	Oct 2025	€1,350,000	7 m
49 The Rise, Mount Merrion, Blackrock	Sept 2025	€1,305,000	112 m
St Anthonys, 19 Greygates, Stillorgan Rd	Oct 2025	€1,650,000	194 m
45 Greenfield Rd, Mount Merrion, Dublin	Nov 2025	€1,390,000	198 m
Seven Churches, Glendalough, Co Wicklow	Sept 2025	€351,000	204 m
Apartment No. 7, Greysgate Hall, Mount Merrion	Jan 2025	€640,000	227 m
Apartment 9 Greygates, Roebuck Ave, Mount Merrionprice excludes VAT	Jan 2026	€190,000	239 m
57 Wilson Road, Mount Merrion, Blackrockprice excludes VAT	Nov 2025	€1,563,880	242 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 received2 April 2026
Decision due27 May 2026
Decision issued25 May 2026

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