Site report · 500 m radius · generated 13 Sept 2026, 06:27

South Avenue, Mount Merrion

Eircode —Coordinates 53.29165, -6.21100Local authority Dun Laoghaire-Rathdown County Council

What closes soonest 1 open window

Observations close 15 Sept 20262 days left
D26B/0449/WEB — application received — The development consists of: The alteration and extension of the existing single
5 weeks from receipt (11 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · €20 to the council · 491 m away

Sources: acp, consult, moderngov, npad, rzlt · fetched 12 Sept 2026, 00:05

Source	Licence	Fetched	Link
acp	CC-BY-4.0	12 Sept 2026, 00:05	open
consult	public	12 Sept 2026, 02:04	open
moderngov	public	12 Sept 2026, 21:48	open
npad	CC-BY-4.0	12 Sept 2026, 20:38	open
rzlt	CC-BY-4.0	12 Sept 2026, 00:23	open

Where this is

Townland: Mount Merrion or Callary
Settlement: Dublin city and suburbs
Electoral division: Stillorgan-Deerpark
Local electoral area: Stillorgan
Local authority: Dun Laoghaire-Rathdown County Council
Parcel: Tailte Éireann 1870703 (leasehold), 541 m²

Census 2022, small area 267124008

337

people

121

households

135

dwellings

87.6% owner-occupied, 9.9% privately rented, 0% social. Vacancy 9.6%.

Sources: places, parcels · fetched 11 Sept 2026, 21:28

Source	Licence	Fetched	Link
places	CC-BY-4.0	11 Sept 2026, 21:28	open
parcels	CC-BY-4.0	11 Sept 2026, 19:06	open

Zoning evaluated against the point

R2 — Existing residential county development plan 2022 2028 · 1 Apr 2022 – 1 Apr 2028

Objective A: A To provide residential development and improve residential amenity while protecting the existing residential amenities

What that means: An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour's objection to an overbearing extension is usually argued under.

Source: zoning · fetched 12 Sept 2026, 02:04

Source	Licence	Fetched	Link
zoning	CC-BY-4.0	12 Sept 2026, 02:04	open

Designations and constraints within 500 m

No OPW CFRAM/NIFM flood extent within 500 m.

Designation	Count	Examples
Radon risk area	7	About 1 in 10 homes in this area is likely to have high radon levels; About 1 in 10 homes in this area is likely to have high radon levels; About 1 in 10 homes in this area is likely to have high radon levels
Record of Protected Structures	3	Mount Merrion House; Mount Merrion House Stables; Thornhill House

Sources: constraints, constraints.radon, constraints.rps · fetched 11 Sept 2026, 19:11

Source	Licence	Fetched	Link
constraints	mixed — CC-BY-4.0 except OPW flood (CC-BY-NC-ND-4.0, publishable=false)	11 Sept 2026, 19:11	open
constraints.radon	CC-BY-4.0	11 Sept 2026, 19:11	open
constraints.rps	CC-BY-4.0 (Fingal); public/attribution, unconfirmed (DLR)	11 Sept 2026, 19:11	open

Residential Zoned Land Tax

This site is on an RZLT map — the draft map 2027 and the final map 2026 (3.97 ha). The owner is liable for an annual 3% tax on market value while it stays there. Submissions on the draft map closed 1 Apr 2026.

Source: rzlt · fetched 12 Sept 2026, 00:23

Source	Licence	Fetched	Link
rzlt	CC-BY-4.0	12 Sept 2026, 00:23	open

Planning applications 158 in 5 years within 500 m

Open for observation

8, Woodlands Drive, Stillorgan, Blackrock, Co Dublin, A94N202 observations close 15 Sept 2026 · 2 days left
The development consists of: The alteration and extension of the existing single
D26B/0449/WEBreceived 11 Aug 2026491 m away

Recent decisions and applications

106

Grant permission

Refuse permission

Declare application invalid

Grant permission for retention

26 Woodlands Avenue, Stillorgan, Co. Dublin Grant permission
The development will consist of: (1) Demolition of existing shed, conservatory
D26A/0433/WEBreceived 10 Jun 2026decided 30 Jul 2026471 m away
63, Deerpark Road, Mount Merrion, Blackrock, Dublin S5 dec not exempt
Change of use from (food preparation) retail to café/restaurant. It has been op
REF8826received 10 Jun 2026decided 7 Jul 2026488 m away
52, Beaufield Park, Stillorgan, Dublin, A94CX39 Grant permission
Alterations to existing planning permission D25A/0068/WEB to include (a) single
D26A/0386/WEBreceived 26 May 2026decided 17 Jul 2026486 m away
National Mobility Hubs Pilot: Dún Laoghaire-Rathdown, 73 Locations Across the Council's Administrative Area, Dún Laoghaire-Rathdown Registered Application
73 mobility hub sites across the Council's administrative area
PC/IC/01/26received 22 May 2026346 m away
2, Redesdale Court, Rededale Road, Mount Merrion, Co Dublin, A94C6K5 Refuse permission
Construct a dormer roof extension to the side and rear, and to insert a window i
D26B/0296/WEBreceived 20 May 2026decided 14 Jul 2026453 m away
2, Redesdale Court, Redesdale Road, Mount Merrion, Co Dublin, A94C6K5 Declare application invalid
Construct a dormer roof extension to the side and rear, and to insert a window i
D26B/0284/WEBreceived 12 May 2026decided 14 May 2026453 m away
100, The Rise, Mount Merrion, Blackrock, Co. Dublin, A94N7Y3 Grant permission
1) Demolition to existing Chimney to the rear, 2) Proposed two story extension t
D26A/0346/WEBreceived 7 May 2026decided 26 Jun 2026366 m away
100, The Rise, Mount Merrion, Co Dublin, A94N7Y3 Declare application invalid
1) Demolition to existing Chimney to the rear, 2) Proposed two story extension t
D26A/0327/WEBreceived 30 Apr 2026decided 6 May 2026366 m away
93, South Avenue, Mount Merrion, Co. Dublin, A94F9X6 Grant permission
Additions and alterations to detached dwelling, including demolition of’ single
D26A/0332received 30 Apr 2026decided 24 Jun 2026277 m away

`description` is truncated at source (80 chars for DLR, 70 for Fingal) and `applicant` is null nationally — NPAD publishes neither in full.

Source: npad · fetched 12 Sept 2026, 20:38

Source	Licence	Fetched	Link
npad	CC-BY-4.0	12 Sept 2026, 20:38	open

Appeals 18 in 5 years within 500 m

ACP 501672 on D26A/0295 Pending
received 7 Jul 202665 m away
ACP 500909 on D25B/0680/WEB Refused
received 3 Mar 2026decided 22 Jun 2026362 m awayinspector's report
ACP 500397 on D25A/0617 Granted with conditions
received 3 Dec 2025decided 19 Mar 2026322 m awayinspector's report
ACP 500280 on D25B/0485/WEB Granted with conditions
received 13 Nov 2025decided 4 Mar 2026128 m awayinspector's report
ACP 323440 on D25A/0466/WEB Granted with conditions
received 18 Aug 2025decided 20 Nov 2025344 m awayinspector's report
ACP 322653 on D25B/0133/WEB Granted with conditions
received 29 May 2025decided 16 Sept 2025258 m awayinspector's report
ACP 322500 on D25A/0143 Granted with conditions
received 12 May 2025decided 11 Sept 2025306 m awayinspector's report
ACP 319565 on D24A/0059 Granted with conditions
received 22 Apr 2024decided 31 Jan 2025209 m awayinspector's report
ACP 321487 on D24B/0425/WEB Open
received 18 Dec 202493 m away
ACP 320028 on D24A/0234 Granted with conditions
received 27 Jun 2024decided 19 Nov 202457 m awayinspector's report

Source: acp · fetched 12 Sept 2026, 00:05

Source	Licence	Fetched	Link
acp	CC-BY-4.0	12 Sept 2026, 00:05	open

Commencement notices 54 in 3 years within 500 m

86 Trees Road Lower, Blackrock, Dublin — Opt out commencement notice
17 Sept 2026CN0147279DRD24A/023473 m away
56 Trees Road Lower, Blackrock, Dublin, A94 X9X5 — Opt out commencement notice
17 Sept 2026CN0147477DRD25B/0739/WEB258 m away
46 South Avenue, Blackrock, Dublin, A94 W9D8 — Opt out commencement notice
24 Aug 2026CN0146325DRD26A/01598 m away
27 Redesdale Road, Blackrock, Dublin — Commencement notice
27 Jul 2026CN0145185DRD25A0617333 m away
128 Trees Road Upper, Blackrock, Dublin, A94 W8W8 — Opt out commencement notice
12 Jun 2026CN0143300DRD26B/0021/WEB285 m away
75 Deerpark Road, Dublin, Dún Laoghaire-Rathdown — Opt out commencement notice
28 May 2026CN0142847DRD25A/0699/WEB484 m away
26A Lower Kilmacud Road, Dublin, Dún Laoghaire-Rathdown, A94 YP77 — Opt out commencement notice
22 May 2026CN0142446DRD25B/0520/WEB372 m away
20 Kilmacud Park, Blackrock, Dún Laoghaire-Rathdown, A94 A4V2 — Opt out commencement notice
12 May 2026CN0142258DRD25B/0625/WEB419 m away
Woodlands Avenue, Dublin, Dún Laoghaire-Rathdown, A94Y7Y8 — Commencement notice
6 May 2026CN0141443DRD23A/0193414 m away
39 Clonmore Road, Blackrock, Dún Laoghaire-Rathdown — Commencement notice
3 Mar 2026CN0139168DRD21A/053827 m away

One notice can cover many buildings — count notices, never building rows, or a single multi-unit scheme reads as a trend (T11).

Source: bcms · fetched 12 Sept 2026, 23:34

Source	Licence	Fetched	Link
bcms	CC-BY-4.0	12 Sept 2026, 23:34	open

Sales 42 in 36 months within 500 m

€922,500

median price

€7,862/m²

median €/m²

sales

rooftop-geocoded

with listing detail

new builds

€393,000 – €1,850,000, 9 Feb 2024 to 28 Nov 2025.

Address	Sold	Price	Asking	Type	Beds	m²	€/m²	BER	Dist.
43 TREES ROAD, MOUNT MERRION, CO DUBLIN	28 Nov 2025	€1,300,000	€1,150,000	Semi-D	4	166	7,831	D2	151 m
23 GLENABBEY ROAD, MOUNT MERRION, CO DUBLIN	19 Nov 2025	€1,410,000	€1,395,000	Semi-D	4	183	7,705	C2	315 m
2 REDESDALE COURT, REDESDALE RD, MOUNT MERRION	4 Nov 2025	€650,000	€595,000	Bungalow	2	58	11,207	D1	462 m
10 MARSHAM COURT, KILMACUD RD UPPER, STILLORGAN	26 Sept 2025	€792,000	€685,000	Semi-D	3	105	7,543	C1	444 m
3 KILMACUD PARK, STILLORGAN, DUBLIN	25 Sept 2025	€950,000	€845,000	Semi-D	3	117	8,120	C2	411 m
13 REDESDALE RD, MOUNT MERRION, DUBLIN	25 Sept 2025	€850,000	€845,000	Bungalow	3	124	6,855	C3	342 m
50 THORNHILL OAKS, CHERRY GARTH, MOUNT MERRION	24 Sept 2025	€1,500,000	€1,395,000	Semi-D	4	165	9,091	A2	181 m
14 SOUTH AVENUE, MOUNT MERRION, CO DUBLIN	5 Sept 2025	€920,000	€825,000	Semi-D	3	92	10,000	F	223 m
28 SOUTH AVE, MOUNT MERRION, DUBLIN	4 Sept 2025	€1,400,000	€1,195,000	Detached	4	163	8,589	D2	111 m
32 BEAUFIELD MANOR, STILLORGAN, DUBLIN	12 Aug 2025	€393,000	€350,000	Bungalow	1	55	7,145	E2	446 m

PPR addresses are geocoded, not surveyed — a sale's position is as good as its address match (`rooftop_n` says how many are address-accurate). Beds, floor area, BER and asking price come from the matched daft.ie advertisement, not from the Register, and only where a match was found (`enriched_n`).

Sources: cara_listings, ppr · fetched 11 Sept 2026, 20:14

Source	Licence	Fetched	Link
cara_listings	Third-party advertisement data captured by Cara from daft.ie. Not open data: internal analysis only, no redistribution of listing content. Business-contact details (licensed PSP name and branch) are retained per Cara DECISIONS 2026-08-19; agent phone numbers and all vendor/buyer identities are dropped.	11 Sept 2026, 20:14	open
ppr	PSI — PSRA re-use terms (psr.ie/re-use-of-public-sector-information). Free re-use in any format provided the source and PSRA copyright are acknowledged, the data is reproduced accurately and not used misleadingly, and it is NOT used 'for the principal purpose of advertising or promoting a particular product or service'. Attribution: 'Contains PSRA Residential Property Price Register data, © Property Services Regulatory Authority.'	12 Sept 2026, 20:31	open

Consultations 2 matched by place

Cruise Passenger Realignment Project, Dun Laoghaire Harbour 38 days left
closes 21 Oct 2026Dún Laoghaire-Rathdown County Councillea-wide
Environment: Green Dog Walkers Pledge 109 days left
closes 31 Dec 2026Dún Laoghaire-Rathdown County Councilcounty-wide

Source: consult · fetched 12 Sept 2026, 02:04

Source	Licence	Fetched	Link
consult	public	12 Sept 2026, 02:04	open

Council items 3 in 24 months

Tree Pruning in Foxrock
Dún Laoghaire CHEPP Area Committee Meeting7 Sept 202611Dún Laoghaire-Rathdown County Council
Taking in Charge at Oatlands Manor, Mount Merrion, Blackrock, Co. Dublin
Monthly County Council Meeting11 May 20265Dún Laoghaire-Rathdown County Council
Local Authorities Members' Association (LAMA) Spring Conference, 28th and 29th January 2026, The Connacht Hotel, Old Dublin Road, Galway
County Council12 Jan 2026F/25/26aFingal County Council

Source: moderngov · fetched 12 Sept 2026, 21:48

Source	Licence	Fetched	Link
moderngov	public	12 Sept 2026, 21:48	open

Capacity and public land

No publishable utility-capacity record within the radius. 14 records from Esb substation withheld: source licence forbids redistribution; see the operator's own register.

Public land (LDA register of relevant lands)

Dublin City Council — Dublin city and suburbs
0.17 hafolio DN11711N266 m awayas of 1 Apr 2023
Dún Laoghaire-Rathdown County Council — Dublin city and suburbs
10 hafolio DN229597F290 m awayas of 1 Apr 2023

Sources: esbn, lda_lands · fetched 11 Sept 2026, 16:42

Source	Licence	Fetched	Link
esbn	all-rights-reserved (esbnetworks.ie disclaimer: personal/non-commercial, no modification or republication without written ESB permission) — permission NOT sought · not redistributable — shown as a flag only	11 Sept 2026, 16:42	open
lda_lands	CC-BY-4.0	11 Sept 2026, 16:43	open

Schools and public transport within 1.0 km

Schools

S N SAN TREASA
primary430 pupilsCatholic363 m
Oatlands Primary School, An Edmund Rice School
primary428 pupilsCatholic387 m
S N NAOMH LORCAN
primary390 pupilsCatholic434 m
S N CNOC AINBHIL
primary434 pupilsCatholic527 m
Oatlands College
postprimary623 pupilsCATHOLIC575 m
Gaelscoil Laighean
primary130 pupilsMulti Denominational772 m
Mount Anville Secondary School
postprimary726 pupilsCATHOLIC795 m

Stops 54 · routes 11, 116, 118, 133, 181, 2, 46n, 47, 511, 700, 740, 740A, 740X, 7B, 7D, E1, E2, L25, S6, X1, X2

Glenabby Road
4789 m
South Avenue
47209 m
Dale Drive
11280 m
South Avenue
11291 m
Dale Drive
11305 m
South Avenue
11310 m
The Rise
47368 m
Redesdale Road
11405 m

Sources: gtfs, schools · fetched 11 Sept 2026, 19:16

Source	Licence	Fetched	Link
gtfs	CC-BY-4.0	11 Sept 2026, 19:16	open
schools	CC-BY-4.0	11 Sept 2026, 16:41	open

Sources used in this report

Section	Source	Licence	Fetched
Location	places	CC-BY-4.0	11 Sept 2026, 21:28
Parcel	parcels	CC-BY-4.0	11 Sept 2026, 19:06
Zoning	zoning	CC-BY-4.0	12 Sept 2026, 02:04
Constraints	constraints	mixed — CC-BY-4.0 except OPW flood (CC-BY-NC-ND-4.0, publishable=false)	11 Sept 2026, 19:11
Constraints	constraints.radon	CC-BY-4.0	11 Sept 2026, 19:11
Constraints	constraints.rps	CC-BY-4.0 (Fingal); public/attribution, unconfirmed (DLR)	11 Sept 2026, 19:11
Rzlt	rzlt	CC-BY-4.0	12 Sept 2026, 00:23
Planning	npad	CC-BY-4.0	12 Sept 2026, 20:38
Appeals	acp	CC-BY-4.0	12 Sept 2026, 00:05
Commencements	bcms	CC-BY-4.0	12 Sept 2026, 23:34
Sales	cara_listings	Third-party advertisement data captured by Cara from daft.ie. Not open data: internal analysis only, no redistribution of listing content. Business-contact details (licensed PSP name and branch) are retained per Cara DECISIONS 2026-08-19; agent phone numbers and all vendor/buyer identities are dropped.	11 Sept 2026, 20:14
Sales	ppr	PSI — PSRA re-use terms (psr.ie/re-use-of-public-sector-information). Free re-use in any format provided the source and PSRA copyright are acknowledged, the data is reproduced accurately and not used misleadingly, and it is NOT used 'for the principal purpose of advertising or promoting a particular product or service'. Attribution: 'Contains PSRA Residential Property Price Register data, © Property Services Regulatory Authority.'	12 Sept 2026, 20:31
Consultations	consult	public	12 Sept 2026, 02:04
Council items	moderngov	public	12 Sept 2026, 21:48
Capacity	esbn	all-rights-reserved (esbnetworks.ie disclaimer: personal/non-commercial, no modification or republication without written ESB permission) — permission NOT sought · not redistributable, flag only	11 Sept 2026, 16:42
Public land	lda_lands	CC-BY-4.0	11 Sept 2026, 16:43
Projects	social_housing	CC-BY-SA-4.0	11 Sept 2026, 20:13
Amenities	gtfs	CC-BY-4.0	11 Sept 2026, 19:16
Amenities	schools	CC-BY-4.0	11 Sept 2026, 16:41
Deadlines	acp	CC-BY-4.0	12 Sept 2026, 00:05
Deadlines	consult	public	12 Sept 2026, 02:04
Deadlines	moderngov	public	12 Sept 2026, 21:48
Deadlines	npad	CC-BY-4.0	12 Sept 2026, 20:38
Deadlines	rzlt	CC-BY-4.0	12 Sept 2026, 00:23

Generated 13 Sept 2026, 06:27 from the Planning Register store. Nothing on this page was fetched live: every figure was already in the store with the fetch time shown. Deadlines are derived from published receipt and decision dates under the Planning and Development Act 2000; confirm with the planning authority before relying on them.

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