Site report · 500 m radius · generated 15 Sept 2026, 00:32

Trees Avenue, Mount Merrion, Mount Merrion or Callary

Eircode —Coordinates 53.29333, -6.20829Local authority Dun Laoghaire-Rathdown County Council

What closes soonest 3 open windows

Observations close 15 Sept 20261 day 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 · 398 m away
Appeal window closes 17 Sept 20263 days left
D26A/0488/WEB — GRANT PERMISSION — The proposed amendment consists of the omission of the previously permitted det
4 weeks from the council's decision (20 Aug 2026) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer) · 481 m away
Appeal window closes 21 Sept 20267 days left
D26A/0493/WEB — GRANT PERMISSION — The development will include the demolition of - the existing end of terrace par
4 weeks from the council's decision (24 Aug 2026) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer) · 437 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	14 Sept 2026, 21:51	open
npad	CC-BY-4.0	14 Sept 2026, 20:39	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-Mount Merrion
Local electoral area: Stillorgan
Local authority: Dun Laoghaire-Rathdown County Council

Census 2022, small area 267128001

370

people

124

households

135

dwellings

89.5% owner-occupied, 8.1% privately rented, 0% social. Vacancy 6.7%.

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	4	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 20 homes in this area is likely to have high radon levels
Record of Protected Structures	4	Saint Damien's; Mount Merrion House; Mount Merrion House Stables

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 (3.18 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 170 in 5 years within 500 m

Open for observation

8, Woodlands Drive, Stillorgan, Blackrock, Co Dublin, A94N202 observations close 15 Sept 2026 · 1 day left
The development consists of: The alteration and extension of the existing single
D26B/0449/WEBreceived 11 Aug 2026398 m away

Recent decisions and applications

107

Grant permission

Refuse permission

Grant permission for retention

Declare application invalid

42, Sycamore Road, Mount Merrion, Blackrock, Co. Dublin, A94Y1T0 Assessment Period
The development will consist of the renovation and extension of existing 2-stor
D26B/0401/WEBreceived 14 Jul 2026251 m away
57, Deerpark Road, Mount Merrion, DUBLIN, A94F761 Grant certificate of exemption
3 Units
V/050/26received 30 Jun 2026decided 24 Jul 2026437 m away
57, Deerpark Road, Mount Merrion, Dublin, A94F761 Grant permission
The development will include the demolition of - the existing end of terrace par
D26A/0493/WEBreceived 30 Jun 2026decided 24 Aug 2026437 m away
47, Deerpark Road, Mount Merrion, Co. Dublin, A94A9X5 Grant permission
The proposed amendment consists of the omission of the previously permitted det
D26A/0488/WEBreceived 29 Jun 2026decided 20 Aug 2026481 m away
Auburn, Old Dublin Road, Stillorgan, Dublin, A94HE48 Grant permission
Single-storey front porch extension with canopy, widening of existing front vehi
D26A/0445/WEBreceived 13 Jun 2026decided 5 Aug 2026478 m away
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 2026367 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 2026413 m away
Auburn, Old Dublin Road, Stillorgan, Dublin, A94HE48 Declare application invalid
Single-storey front porch extension with canopy, widening of existing front vehi
D26A/0421/WEBreceived 8 Jun 2026decided 10 Jun 2026478 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 2026492 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 14 Sept 2026, 20:39

Source	Licence	Fetched	Link
npad	CC-BY-4.0	14 Sept 2026, 20:39	open

Appeals 19 in 5 years within 500 m

ACP 501672 on D26A/0295 Pending
received 7 Jul 2026302 m away
ACP 500480 on D25A/0757/WEB Refused
received 16 Dec 2025decided 20 Mar 2026390 m awayinspector's report
ACP 500280 on D25B/0485/WEB Granted with conditions
received 13 Nov 2025decided 4 Mar 2026284 m awayinspector's report
ACP 323691 on D25B/0375/WEB Invalid
received 18 Sept 2025decided 18 Sept 2025430 m away
ACP 322653 on D25B/0133/WEB Granted with conditions
received 29 May 2025decided 16 Sept 2025391 m awayinspector's report
ACP 322226 on D24A/0937/WEB Granted with conditions
received 3 Apr 2025decided 22 Jul 2025305 m awayinspector's report
ACP 319565 on D24A/0059 Granted with conditions
received 22 Apr 2024decided 31 Jan 2025128 m awayinspector's report
ACP 321487 on D24B/0425/WEB Open
received 18 Dec 2024144 m away
ACP 319907 on D24A/0008 Granted with conditions
received 12 Jun 2024decided 13 Dec 2024438 m awayinspector's report
ACP 320028 on D24A/0234 Granted with conditions
received 27 Jun 2024decided 19 Nov 2024171 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 52 in 3 years within 500 m

86 Trees Road Lower, Blackrock, Dublin — Opt out commencement notice
17 Sept 2026CN0147279DRD24A/0234188 m away
56 Trees Road Lower, Blackrock, Dublin, A94 X9X5 — Opt out commencement notice
17 Sept 2026CN0147477DRD25B/0739/WEB87 m away
46 South Avenue, Blackrock, Dublin, A94 W9D8 — Opt out commencement notice
24 Aug 2026CN0146325DRD26A/0159253 m away
66 The Rise, Blackrock, Dublin, A94 X9F6 — Opt out commencement notice
27 Jul 2026CN0145190DRD25B/0292338 m away
Sycamore Crescent, Dublin, A94Y8D2 — Opt out commencement notice
22 Jul 2026CN0145074DRD25B/0727/WEB374 m away
75 Deerpark Road, Dublin, Dún Laoghaire-Rathdown — Opt out commencement notice
28 May 2026CN0142847DRD25A/0699/WEB382 m away
Woodlands Avenue, Dublin, Dún Laoghaire-Rathdown, A94Y7Y8 — Commencement notice
6 May 2026CN0141443DRD23A/0193336 m away
39 Clonmore Road, Blackrock, Dún Laoghaire-Rathdown — Commencement notice
3 Mar 2026CN0139168DRD21A/0538285 m away
40 Thornhill Oaks, Mount Merrion, Blackrock, Co. Dublin., Dublin, Dún Laoghaire-Rathdown, A94 X2P7 — Opt out commencement notice
5 Jan 2026CN0136895DRD24A/0059138 m away
The Rise, Mount Merrion, Dún Laoghaire-Rathdown, A94 E283 — Commencement notice
17 Nov 2025CN0135602DRD23A/0600208 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 14 Sept 2026, 23:44

Source	Licence	Fetched	Link
bcms	CC-BY-4.0	14 Sept 2026, 23:44	open

Sales 34 in 36 months within 500 m

€942,500

median price

€7,893/m²

median €/m²

sales

rooftop-geocoded

with listing detail

new builds

€368,500 – €1,850,000, 13 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	109 m
23 GLENABBEY ROAD, MOUNT MERRION, CO DUBLIN	19 Nov 2025	€1,410,000	€1,395,000	Semi-D	4	183	7,705	C2	410 m
50 THORNHILL OAKS, CHERRY GARTH, MOUNT MERRION	24 Sept 2025	€1,500,000	€1,395,000	Semi-D	4	165	9,091	A2	235 m
49 THE RISE, MOUNT MERRION, BLACKROCK	24 Sept 2025	€1,305,000	€1,195,000	Semi-D	4	143	9,126	C3	473 m
14 SOUTH AVENUE, MOUNT MERRION, CO DUBLIN	5 Sept 2025	€920,000	€825,000	Semi-D	3	92	10,000	F	379 m
28 SOUTH AVE, MOUNT MERRION, DUBLIN	4 Sept 2025	€1,400,000	€1,195,000	Detached	4	163	8,589	D2	302 m
32 BEAUFIELD MANOR, STILLORGAN, DUBLIN	12 Aug 2025	€393,000	€350,000	Bungalow	1	55	7,145	E2	385 m
71 TREES ROAD, MOUNT MERRION, CO DUBLIN	8 Aug 2025	€1,480,000	€1,395,000	Semi-D	4	196	7,551	B3	327 m
10 BEAUFIELD MANOR, STILLORGAN, DUBLIN	7 Aug 2025	€560,000	€545,000	Apartment	2	75.3	7,437	D1	432 m
APT.28 - THORNHILL OAKS, CHERRY GARTH - MOUNT MERRION, BLACKROCK	18 Jul 2025	€999,999	€950,000	Apartment	3	126	7,937	A2	196 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, daft_gateway, 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
daft_gateway	Third-party advertisement data read from daft.ie's own JSON gateway. Not open data: internal analysis only, no redistribution of listing content. Business-contact details (the licensed PSP's name and branch) are retained per Cara DECISIONS 2026-08-19; agent phone numbers, profile images and all media URLs are dropped at fetch time and never written down. Vendor and buyer identities are not in this data.	14 Sept 2026, 22:12	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.'	14 Sept 2026, 20:32	open

Consultations 2 matched by place

Cruise Passenger Realignment Project, Dun Laoghaire Harbour 36 days left
closes 21 Oct 2026Dún Laoghaire-Rathdown County Councillea-wide
Environment: Green Dog Walkers Pledge 108 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 4 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
Councillor J. Walsh - Update on Planning Enforcement - Sycamore Avenue - AI099082
Blanchardstown-Mulhuddart/Castleknock/Ongar Area Committee (Services B - Strategic & General Matters)7 Nov 2024CMB/295/24Fingal County Council

Source: moderngov · fetched 14 Sept 2026, 21:51

Source	Licence	Fetched	Link
moderngov	public	14 Sept 2026, 21:51	open

Capacity and public land

No publishable utility-capacity record within the radius. 15 records from Esb substation withheld: source licence forbids redistribution; see the operator's own register.

Public land (LDA register of relevant lands)

Dún Laoghaire-Rathdown County Council — Dublin city and suburbs
10 hafolio DN229597F199 m awayas of 1 Apr 2023
Dublin City Council — Dublin city and suburbs
0.18 hafolio DN51982F368 m awayas of 1 Apr 2023
Dublin City Council — Dublin city and suburbs
0.19 hafolio DN57872F465 m awayas of 1 Apr 2023
Dublin City Council — Dublin city and suburbs
0.17 hafolio DN11711N471 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 pupilsCatholic207 m
Oatlands Primary School, An Edmund Rice School
primary428 pupilsCatholic314 m
Oatlands College
postprimary623 pupilsCATHOLIC398 m
S N NAOMH LORCAN
primary390 pupilsCatholic540 m
S N CNOC AINBHIL
primary434 pupilsCatholic780 m
Gaelscoil Laighean
primary130 pupilsMulti Denominational852 m
Mount Anville Secondary School
postprimary726 pupilsCATHOLIC955 m

Stops 48 · routes 11, 116, 118, 133, 181, 2, 46n, 47, 700, 740, 740A, 740X, 7B, 7D, E1, E2, L25, S6, X1, X2

The Rise
47145 m
South Avenue
47152 m
The Rise
47176 m
Glenabby Road
47200 m
Deer Park
47336 m
Stillorgan Pk Hotel
116, 118, 2, 47, 700, 740, 740A, 740X, 7B, 7D, E1, E2356 m
Oatlands College
116, 118, 47, 7B, 7D, E1, E2421 m
Sycamore Crescent
116, 133, 2, 46n, 47, 700, 7B, 7D, E1, E2424 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	14 Sept 2026, 20:39
Appeals	acp	CC-BY-4.0	12 Sept 2026, 00:05
Commencements	bcms	CC-BY-4.0	14 Sept 2026, 23:44
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	daft_gateway	Third-party advertisement data read from daft.ie's own JSON gateway. Not open data: internal analysis only, no redistribution of listing content. Business-contact details (the licensed PSP's name and branch) are retained per Cara DECISIONS 2026-08-19; agent phone numbers, profile images and all media URLs are dropped at fetch time and never written down. Vendor and buyer identities are not in this data.	14 Sept 2026, 22:12
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.'	14 Sept 2026, 20:32
Consultations	consult	public	12 Sept 2026, 02:04
Council items	moderngov	public	14 Sept 2026, 21:51
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	14 Sept 2026, 21:51
Deadlines	npad	CC-BY-4.0	14 Sept 2026, 20:39
Deadlines	rzlt	CC-BY-4.0	12 Sept 2026, 00:23

Generated 15 Sept 2026, 00:32 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.

Something wrong with this page?