Neighbourhoods · Dublin City · last 24 months · 162 electoral divisions

Where households extend most — Dublin City neighbourhoods

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

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

applications per 1,000 homes

48%

household works

14%

for work already done

10%

refused

25%

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 107 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	Clontarf East E	88%	25	596	12%	—	—
2	Merchants Quay D	83%	30	920	27%	—	—
3	Whitehall B	80%	66	1,669	20%	9%	55
4	Ballymun E	78%	32	599	3%	—	—
5	Ashtown B	76%	54	1,057	7%	6%	53
6	Whitehall A	76%	37	1,072	11%	8%	55
7	Harmonstown B	76%	29	1,022	14%	9%	55
8	Clontarf East C	74%	76	1,193	11%	0%	55
9	Grace Park	73%	70	2,331	6%	5%	55
10	Clontarf West E	73%	30	955	20%	—	—
11	Ballygall D	73%	26	973	12%	—	—
12	Grange C	73%	22	1,125	14%	—	—
13	Harmonstown A	71%	35	1,095	17%	5%	54
14	Terenure C	70%	43	646	7%	4%	55
15	Pembroke East D	69%	48	1,939	2%	6%	55
16	Drumcondra South C	68%	57	1,285	14%	11%	55
17	Botanic C	68%	41	945	15%	12%	55
18	Clontarf West A	66%	61	1,443	10%	2%	55
19	Ballygall C	66%	44	1,323	5%	3%	54
20	Clontarf East D	65%	68	1,043	9%	5%	60
21	Pembroke East C	64%	99	1,681	14%	3%	55
22	Ballymun F	64%	22	895	5%	—	—
23	Rathfarnham	63%	71	1,991	18%	8%	55
24	Beaumont B	63%	38	1,532	5%	0%	55
25	Raheny-St. Assam	62%	63	1,543	5%	10%	54
26	Kimmage B	62%	26	1,446	12%	—	—
27	Clontarf East B	61%	142	2,732	12%	2%	55
28	Raheny-Foxfield	61%	28	900	0%	5%	55
29	Beaumont E	61%	23	762	30%	—	—
30	Grange E	61%	23	967	4%	—	—
31	Clontarf East A	60%	72	1,358	17%	11%	54
32	Clontarf West B	60%	20	1,021	30%	—	—
33	Beaumont C	59%	63	1,327	21%	0%	55
34	Botanic B	59%	46	1,447	17%	14%	54
35	Beaumont F	59%	27	1,377	11%	—	—
36	Raheny-Greendale	59%	27	851	19%	—	—
37	Rathmines East C	58%	86	1,339	21%	12%	55
38	Ashtown A	57%	77	4,552	13%	2%	55
39	Kilmainham C	57%	61	2,085	26%	20%	55
40	Grange A	57%	51	4,166	12%	6%	54

Every council 31

#	Council	household works	Applications	Retention	Refused	Median days
1	South Dublin	55%	2,266	15%	12%	55
2	Dublin City	47%	6,009	15%	10%	55
3	Leitrim	43%	507	28%	4%	53
4	Galway City	41%	691	27%	14%	55
5	Cork City	39%	1,190	18%	8%	57
6	Kildare	37%	3,285	24%	20%	62
7	Sligo	37%	1,123	25%	7%	52
8	Wicklow	36%	2,778	20%	14%	54
9	Waterford	36%	2,255	21%	11%	56
10	Tipperary	34%	3,078	30%	4%	56
11	Limerick	34%	2,833	20%	10%	61
12	Louth	34%	2,052	29%	15%	52
13	Cavan	34%	1,606	23%	5%	57
14	Dún Laoghaire-Rathdown	33%	3,921	11%	13%	52
15	Meath	32%	3,476	21%	13%	55
16	Roscommon	32%	1,350	23%	13%	98
17	Cork County	31%	6,773	21%	8%	67
18	Clare	31%	2,400	20%	6%	55
19	Kilkenny	31%	1,897	22%	7%	63
20	Westmeath	31%	1,390	21%	13%	57
21	Kerry	30%	2,666	29%	12%	63
22	Longford	30%	600	20%	14%	51
23	Fingal	28%	3,457	20%	22%	54
24	Mayo	28%	2,749	18%	7%	60
25	Carlow	28%	922	17%	9%	84
26	Donegal	27%	5,080	24%	7%	50
27	Laois	26%	1,963	23%	7%	55
28	Monaghan	26%	1,327	19%	7%	99
29	Offaly	24%	1,612	21%	9%	77
30	Galway County	21%	3,873	24%	13%	55
31	Wexford	18%	2,838	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 7 Nov 2026, 02:45

Source	Licence	Fetched	Link
National Planning Application Database (NPAD)	CC BY 4.0	7 Nov 2026, 02:45	open
CSO Census 2022 Small Area Population Statistics	CC BY 4.0	7 Nov 2026, 02:45	open
An Coimisiún Pleanála case list	CC BY 4.0	7 Nov 2026, 02:45	open
Building Control Management System commencement notices	CC BY 4.0	7 Nov 2026, 02:45	open

Recomputed weekly from the store; last built 7 Nov 2026.

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