Neighbourhoods · Dún Laoghaire-Rathdown · last 24 months · 69 electoral divisions

Where households extend most — Dún Laoghaire-Rathdown neighbourhoods

Every neighbourhood ranked: applications, extensions, retention and refusals.

Data updated 31 Oct 2026 · register lag up to 7 days · sources & freshness

46.1

applications per 1,000 homes

33%

household works

11%

for work already done

13%

refused

13%

asked for more details

Busiest Extending Built first Refusals Slowest Further info Appeals Building 12 months 24 months

All Dublin Dublin City Dún Laoghaire-Rathdown Fingal South Dublin

Where households extend most 66 ranked

Share of applications that are extensions, attics, dormers, porches, garden rooms and the like.

#	Neighbourhood	household works	Applications	Households	Retention	Refused	Median days
1	Ballinteer-Woodpark	69%	54	2,037	15%	8%	52
2	Ballinteer-Broadford	62%	21	957	14%	—	—
3	Blackrock-Newpark	59%	34	774	15%	0%	52
4	Killiney South	58%	40	2,257	10%	13%	52
5	Cabinteely-Granitefield	58%	36	1,008	17%	4%	52
6	Foxrock-Beechpark	56%	45	620	11%	3%	51
7	Clonskeagh-Windy Arbour	51%	61	1,078	8%	18%	51
8	Clonskeagh-Milltown	51%	39	781	5%	14%	52
9	Churchtown-Landscape	51%	35	489	11%	3%	52
10	Stillorgan-Priory	50%	52	856	6%	5%	52
11	Stillorgan-Deerpark	49%	94	1,001	6%	21%	52
12	Stillorgan-Mount Merrion	47%	78	839	5%	11%	53
13	Clonskeagh-Roebuck	46%	52	1,304	2%	10%	52
14	Dun Laoghaire Sallynoggin East	44%	45	1,057	16%	10%	51
15	Shankill-Shanganagh	42%	53	1,931	8%	7%	52
16	Stillorgan-Merville	42%	48	1,173	8%	16%	51
17	Glencullen	41%	261	7,893	11%	19%	53
18	Blackrock-Monkstown	41%	85	1,379	20%	17%	50
19	Dundrum-Taney	40%	50	1,009	10%	12%	53
20	Blackrock-Glenomena	40%	48	698	8%	5%	51
21	Stillorgan-Leopardstown	39%	28	1,141	4%	12%	51
22	Ballinteer-Meadowbroads	39%	28	609	4%	4%	51
23	Dalkey Upper	38%	74	772	8%	9%	50
24	Churchtown-Orwell	38%	53	689	8%	4%	51
25	Cabinteely-Kilbogget	38%	29	917	14%	—	—
26	Dun Laoghaire-Sallynoggin West	38%	21	1,595	19%	—	—
27	Stillorgan-Kilmacud	36%	83	1,544	10%	12%	51
28	Churchtown-Castle	36%	39	746	13%	13%	52
29	Dun Laoghaire-Glasthule	35%	94	1,130	10%	11%	51
30	Blackrock-Booterstown	35%	46	1,413	7%	6%	53
31	Ballinteer-Ludford	35%	31	786	16%	21%	53
32	Foxrock-Carrickmines	34%	135	2,184	10%	12%	53
33	Cabinteely-Pottery	33%	72	1,830	8%	10%	52
34	Dundrum-Kilmacud	33%	58	1,338	9%	15%	51
35	Dun Laoghaire-Monkstown Farm	33%	27	894	26%	4%	52
36	Dun Laoghaire-Sandycove	31%	127	1,401	10%	9%	51
37	Blackrock-Carysfort	31%	94	2,185	12%	15%	52
38	Dundrum-Balally	30%	124	3,306	13%	9%	52
39	Dundrum-Sweetmount	30%	33	1,046	9%	17%	51
40	Foxrock-Torquay	29%	31	561	13%	27%	54

Every council 31

#	Council	household works	Applications	Retention	Refused	Median days
1	South Dublin	55%	2,287	15%	12%	55
2	Dublin City	47%	6,013	14%	10%	55
3	Leitrim	43%	502	27%	4%	53
4	Galway City	41%	691	27%	14%	55
5	Cork City	40%	1,194	19%	7%	56
6	Sligo	38%	1,120	25%	7%	52
7	Kildare	37%	3,300	24%	20%	61
8	Wicklow	36%	2,785	20%	14%	54
9	Waterford	36%	2,260	21%	11%	56
10	Tipperary	34%	3,067	30%	4%	56
11	Limerick	34%	2,837	20%	10%	61
12	Cavan	34%	1,596	23%	5%	58
13	Dún Laoghaire-Rathdown	33%	3,916	11%	13%	52
14	Meath	33%	3,459	20%	13%	55
15	Louth	33%	2,066	29%	15%	52
16	Roscommon	32%	1,359	22%	13%	98
17	Cork County	31%	6,812	21%	8%	67
18	Clare	31%	2,399	20%	6%	55
19	Westmeath	31%	1,382	20%	13%	59
20	Kerry	30%	2,646	30%	12%	63
21	Kilkenny	30%	1,898	22%	7%	63
22	Longford	30%	603	19%	14%	50
23	Carlow	29%	914	18%	9%	83
24	Fingal	28%	3,460	20%	22%	54
25	Mayo	28%	2,749	18%	7%	60
26	Donegal	27%	5,069	24%	7%	50
27	Laois	26%	1,964	23%	7%	55
28	Monaghan	26%	1,329	19%	7%	99
29	Offaly	24%	1,613	21%	9%	77
30	Galway County	21%	3,858	24%	13%	54
31	Wexford	18%	2,836	27%	16%	54

How it is counted

A neighbourhood is a CSO electoral division; its households and population are the 2022 census totals of the small areas inside it. Every application, appeal and building-start notice is counted in the division where it is on the map.
Household works are applications whose description says extension, attic, dormer, porch, garden room, garage conversion and the like, and does not say apartments, units, commercial, retail or office.
Work already done (retention) is an application to keep something that was built without permission: its type or description says retention. Its grant rate is shown where at least ten were decided.
Decisions count grants and refusals only; invalid, withdrawn and undecided applications are left out of every rate. Days are from the council’s receipt date to its decision date.
A rate is printed only where the neighbourhood has at least 20 of the thing being rated in the window; smaller ones show counts and are not ranked.
Councils have no per-household figures outside Dublin: the census spine is loaded for the Dublin region only.

Sources: National Planning Application Database (NPAD), CSO Census 2022 Small Area Population Statistics, An Coimisiún Pleanála case list, Building Control Management System commencement notices · fetched 31 Oct 2026, 02:43

Source	Licence	Fetched	Link
National Planning Application Database (NPAD)	CC BY 4.0	31 Oct 2026, 02:43	open
CSO Census 2022 Small Area Population Statistics	CC BY 4.0	31 Oct 2026, 02:43	open
An Coimisiún Pleanála case list	CC BY 4.0	31 Oct 2026, 02:43	open
Building Control Management System commencement notices	CC BY 4.0	31 Oct 2026, 02:43	open

Recomputed weekly from the store; last built 31 Oct 2026.

Homes permitted, not started · Grant rates by council · Sources & freshness