GrantedExtensionDecided 24 February 2026

21, Springhill Avenue, Blackrock, Co. Dublin, A94DE78

Construction of a single-storey rear and side extension, dormer extensions to the front and rear, and demolition of a garage.

D25A/0999/WEB · Dun Laoghaire Rathdown County Council · Lodged 22 December 2025

Reference: D25A/0999/WEB
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 22 December 2025

Summary

AI-generated

The development consists of a new single-storey extension to the rear and side of the existing house, along with extending the existing front and rear dormers. It also includes the demolition of the existing garage, external insulation, a new bike store, and widening the vehicular access.

Extensionextensiondormerdemolition

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 the construction of a new single storey extension to the rear and side of existing house, extension of existing dormer at first floor level at rear, extension of existing dormer at first floor level at front, the demolition of the existing garage, external insulation of existing house, new bike store to front, widening of existing vehicle access, and associated site works.

Land-use zoning

What this land is zoned for

Objective ARS

“A To provide residential development and improve residential amenity while protecting the existing residential amenities”

Objective set by the COUNTY DEVELOPMENT PLAN 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.

Read the zoning objectives in the development plan

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 Springhill Ave, Blackrock, Dublin	Sept 2025	€770,000	26 m
24 Springhill Ave, Blackrock, Dublin	Jan 2026	€795,000	29 m
89 Springhill Ave, Deans Grange, Blackrock	Dec 2025	€721,000	125 m
60 Springhill Ave, Deansgrange, Blackrock	Jun 2025	€755,000	126 m
32 Springhill Park, Blackrock, Dublinnot full market price	Dec 2025	€533,333	167 m
112 Springhill Ave, Blackrock, Dublin	Jan 2025	€830,000	208 m
17 Deansgrange Road, Blackrock, Co Dublin	Aug 2025	€1,020,000	225 m
70 Mount Albany, Blackrock, Dublin	Dec 2025	€800,000	241 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 received22 December 2025
Decision due24 February 2026
Decision issued24 February 2026

In the area

Applications near this site

Other planning applications within about 500 m — what else is being proposed or built nearby.

Related developments

Similar applications

Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.

Community

Discussion

What local people think about this application.

Nobody watching yet

Community sentiment

No votes yet

Nobody has voted on this application yet.

Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.

No comments yet. Be the first to say what you think about this application.

Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.