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Planning in Ireland

South Dublin planning applications

Search the latest year of South Dublin County Council planning applications by location, reference, development, applicant or status.

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20 planning applications match the selected filters.

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SD26B/0344

24 Jul 2026

Status: Valid

Demolition of portions of the existing rear and side external walls at ground floor level and the rear wall of the first floor; Demolition of the existing garage roof and the existing rear utility room, and the construction of (a) A single storey extension to the rear and side of the existing dwelling; (b) The partial conversion of the existing garage to habitable accommodation; (c) A first floor extension to the rear of dwelling, including the extension of the existing roof over the proposed first floor extension; (d) The widening of the existing vehicular entrance; and (e) Associated external works, including a new front entrance, entrance steps, planter, landscaping and all ancillary site development works.

South Dublin County Council

66, Knockcullen Drive, Knocklyon, Dublin, D16 K0H2

Application type: Permission
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SD26B/0309W

22 Jun 2026

Status: 35 Day Assessment

Construction of a 32sq.m ground floor flat roof extension to the rear, providing a new utility room, extended kitchen and dining room with no.1 new rooflight; Attic conversion to the rear extending the property to two storeys to include two additional bedrooms, office space, shower room and en-suite; Two roof lights to the north facing front elevation; External insulation with brick finish to the front, side and rear facades; Ancillary site works as required to facilitate construction works.

South Dublin County Council

18 Idrone Park, Knocklyon, Dublin 16, D16 PX88

Application type: Permission
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SD26B/0062W

13 Feb 2026

Status: Final Grant

Demolition of an existing single story glazed conservatory and store, construction of a new 2 storey extension and attic conversion to the rear providing an extended kitchen and dining room at ground floor, two additional bedrooms and bathroom at the new first floor level, a new roof light to the north facing roof, external insulation with render finish and all associated drainage works and site works as required.

South Dublin County Council

16 Idrone Park, Knocklyon, Dublin 16, D16PX29

Application type: PermissionDecision: Grant Permission
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SD26B/0032W

26 Jan 2026

Status: Final Grant

(i) Demolition of single storey lean-to shed and removal of existing boundary wall to the front; (ii) Construction of a two-storey extension to the front/north, side/west and rear/south of the existing two-storey dwelling with associated internal reconfigurations; (iii) provision of 1 no. rooflight and 2 no. solar panels; (iv) Provision of new boundary walls (1.2m) to the front; and, (v) All ancillary works, inclusive of landscaping, boundary treatments and SuDS drainage, necessary to facilitate the development.

South Dublin County Council

2, Knocklyon Avenue, Knocklyon, Dublin 16, D16 H3K8

Application type: PermissionDecision: Grant Permission
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SD25B/0592W

13 Jan 2026

Status: Final Grant

The development will consist of A. demolition of existing single storey pitched roof rear extension, to be replaced with a proposed single storey flat roofed rear extension, B. conversion of existing garage to ground floor bedroom, C. works to front elevation to include a proposed roof tiled porch with 2 no. brick bay windows serving living room and proposed ground floor bedroom, D. replacement of existing windows E. widening of existing driveway piers to facilitate improved vehicular access, F. PV solar panels to rear roof, (g) all associated internal works, drainage, and site service works.

South Dublin County Council

14, Woodstown Park, Knocklyon, Dublin 16, D16 WR92.

Application type: PermissionDecision: Grant Permission
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SD26A/0001W

6 Jan 2026

Status: Appeal decided

Planning permission is sought by Mr. Ross Hollingsworth for a detached two storey, building to provide 2 number circa 82sq.m 2 Bed apartments with balconies. The drainage arrangements are to tap into the existing and as approved under planning reg ref SD11A/0065 and as amended by SD15A/0299, & SD17A/0163. A new pedestrian and vehicular access with crossover off Castlefield Avenue, & boundary walls on Lands at Castlefield Avenue, Knocklyon adjoining Mimosa Castlefield Avenue, Dublin 16, D16R2F3, part of folio 68669F & 75126L, and all ancillary site works.

South Dublin County Council

Lands at Castlefield Avenue, Knocklyon adjoining Mimosa Castlefield Ave, Dublin 16, D16 R2F3

Application type: PermissionDecision: Grant Permission
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SD25B/0581W

4 Dec 2025

Status: Final Grant

Planning Permission to demolish the existing 6sq.m. garage to the side and construct a new 51sq.m. Two Storey Granny Flat Extension with an 11sq.m. attic conversion to the side of the existing semi-detached dwelling and to include solar panels to the front a rear elevation and external insulation front and rear to the existing dwelling and to include ancillary works

South Dublin County Council

77 Dargle Wood, Knocklyon, Dublin 16, D16H773

Application type: PermissionDecision: Grant Permission
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SD25B/0504W

21 Aug 2025

Status: Final Grant

(i) demolition of existing rear extension and shed; (ii) construction of single storey flat roof extension to the rear of existing two storey dwelling with covered patio and flat roof rooflights; (iii) construction of new bay window at first floor level over new extension to the rear of existing dwelling; (iv) new windows; landscaping, SUDS drainage and all associated works necessary to facilitate the development.

South Dublin County Council

44, Knockcullen Lawn, Knocklyon, Dublin 16, D16 ND86

Application type: PermissionDecision: Grant Permission
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Applications by area

Top South Dublin localities in the imported the latest year.

Dublin 16
Dublin
Knocklyon

Monthly registrations

Recent application volume by registration month.

Aug 20252
Sept 20251
Oct 20251
Nov 20253
Dec 20252
Jan 20264
Feb 20262
Apr 20261
Jun 20262
Jul 20262

Areas in Jul 2026

Localities with the most applications in the latest registration month.

Dublin
Dublin 16

Status in Jul 2026

Current status mix for applications registered in the latest month.

Valid

Types in Jul 2026

Most common application types registered in the latest month.

Permission

Planning activity and trends

Based on the latest 12 months of imported planning data for this council.

Applications

20

Latest registered

24 Jul 2026

Most active area

Dublin 16

Most common type

Permission

Latest month apps

2

Month change

0

Monthly trend

Jul 2026

0

01234Aug 25Jan 26Jul 26

Area overview

Dublin 16 accounts for 80%

Dublin 1680%
Dublin15%
Knocklyon5%

Status mix

Final Grant accounts for 65%

Final Grant65%
Appeal decided10%
Valid10%
35 Day Assessment5%

Application types

Permission accounts for 100%

Permission100%