Neighbourhoods · Dún Laoghaire-Rathdown · last 12 months · 69 electoral divisions

Where people build first and ask later — Dún Laoghaire-Rathdown neighbourhoods

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

Data updated 17 Oct 2026 · register lag up to 7 days · sources & freshness

22.8

applications per 1,000 homes

34%

household works

11%

for work already done

13%

refused

14%

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 people build first and ask later 44 ranked

Share of applications that seek retention — permission for something already built.

#	Neighbourhood	retention	Applications	Households	Retention	Refused	Median days
1	Dalkey-Coliemore	23%	35	581	23%	10%	51
2	Blackrock-Newpark	22%	23	774	22%	—	—
3	Dundrum-Sandyford	20%	41	3,004	20%	13%	54
4	Churchtown-Castle	20%	20	746	20%	—	—
5	Foxrock-Beechpark	20%	20	620	20%	—	—
6	Foxrock-Deansgrange	19%	21	848	19%	—	—
7	Dun Laoghaire Sallynoggin East	17%	23	1,057	17%	0%	52
8	Cabinteely-Loughlinstown	16%	45	1,993	16%	17%	54
9	Glencullen	15%	130	7,893	15%	11%	52
10	Blackrock-Central	15%	41	1,368	15%	23%	53
11	Dalkey-Bullock	15%	20	686	15%	—	—
12	Cabinteely-Granitefield	15%	20	1,008	15%	—	—
13	Dundrum-Balally	14%	66	3,306	14%	14%	51
14	Killiney North	14%	43	1,228	14%	19%	51
15	Dalkey Hill	14%	36	615	14%	10%	51
16	Blackrock-Monkstown	14%	35	1,379	14%	8%	51
17	Dalkey Upper	14%	28	772	14%	10%	52
18	Stillorgan-Merville	14%	22	1,173	14%	13%	51
19	Churchtown-Nutgrove	14%	21	1,186	14%	—	—
20	Dun Laoghaire-Sandycove	12%	85	1,401	12%	7%	51
21	Dun Laoghaire-West Central	12%	42	1,121	12%	9%	49
22	Stillorgan-Priory	11%	27	856	11%	0%	51
23	Blackrock-Williamstown	11%	27	1,060	11%	32%	53
24	Killiney South	11%	27	2,257	11%	20%	52
25	Foxrock-Carrickmines	10%	69	2,184	10%	10%	52
26	Clonskeagh-Windy Arbour	10%	30	1,078	10%	23%	51
27	Blackrock-Carysfort	9%	47	2,185	9%	18%	52
28	Stillorgan-Kilmacud	9%	46	1,544	9%	15%	51
29	Dun Laoghaire-Glasthule	8%	52	1,130	8%	9%	51
30	Stillorgan-Deerpark	8%	37	1,001	8%	20%	53
31	Blackrock-Stradbrook	8%	24	977	8%	15%	52
32	Blackrock-Templehill	7%	30	1,071	7%	9%	51
33	Dundrum-Kilmacud	7%	28	1,338	7%	8%	52
34	Ballinteer-Woodpark	7%	27	2,037	7%	—	—
35	Cabinteely-Pottery	6%	31	1,830	6%	9%	53
36	Dun Laoghaire-Salthill	6%	31	763	6%	—	—
37	Shankill-Shanganagh	6%	31	1,931	6%	14%	54
38	Stillorgan-Mount Merrion	5%	38	839	5%	10%	52
39	Blackrock-Glenomena	5%	21	698	5%	—	—
40	Dundrum-Taney	4%	25	1,009	4%	8%	52

Every council 31

#	Council	retention	Applications	Retention	Refused	Median days
1	Tipperary	30%	1,510	30%	4%	56
2	Kerry	30%	1,266	30%	11%	64
3	Louth	29%	1,027	29%	13%	51
4	Leitrim	28%	250	28%	5%	52
5	Wexford	27%	1,242	27%	16%	54
6	Galway City	27%	352	27%	14%	55
7	Laois	26%	1,039	26%	7%	55
8	Galway County	25%	1,986	25%	16%	55
9	Sligo	25%	552	25%	7%	53
10	Donegal	24%	2,542	24%	7%	50
11	Kildare	24%	1,580	24%	20%	62
12	Roscommon	24%	706	24%	14%	100
13	Kilkenny	23%	905	23%	6%	63
14	Cavan	23%	766	23%	5%	63
15	Cork County	22%	3,378	22%	7%	66
16	Meath	22%	1,826	22%	16%	55
17	Clare	22%	1,210	22%	5%	55
18	Offaly	22%	850	22%	10%	70
19	Westmeath	22%	710	22%	15%	55
20	Longford	22%	307	22%	16%	49
21	Limerick	21%	1,475	21%	11%	55
22	Waterford	21%	1,131	21%	8%	55
23	Fingal	20%	1,691	20%	23%	54
24	Mayo	20%	1,340	20%	6%	59
25	Wicklow	19%	1,378	19%	11%	54
26	Cork City	19%	689	19%	9%	56
27	Monaghan	18%	674	18%	7%	100
28	Carlow	17%	456	17%	10%	63
29	South Dublin	16%	1,096	16%	13%	55
30	Dublin City	15%	2,920	15%	10%	55
31	Dún Laoghaire-Rathdown	11%	1,935	11%	13%	52

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 17 Oct 2026, 03:41

Source	Licence	Fetched	Link
National Planning Application Database (NPAD)	CC BY 4.0	17 Oct 2026, 03:41	open
CSO Census 2022 Small Area Population Statistics	CC BY 4.0	17 Oct 2026, 03:41	open
An Coimisiún Pleanála case list	CC BY 4.0	17 Oct 2026, 03:41	open
Building Control Management System commencement notices	CC BY 4.0	17 Oct 2026, 03:41	open

Recomputed weekly from the store; last built 17 Oct 2026.

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