Planning Register
Site report · 500 m radius · generated 12 Sept 2026, 22:38

Knocklyon Road

Eircode Coordinates 53.28413, -6.31114Local authority South Dublin County Council
Applications only for this county. Appeals, zoning, RZLT and consultations: Dún Laoghaire-Rathdown and Fingal only for now.

What closes soonest 5 open windows

  • Appeal window closes 14 Sept 20262 days left
    SD26B/0361WInvalid - Site Notice — Construction of a 2 storey rear extension to existing dwelling
    4 weeks from the council's decision (17 Aug 2026) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer) · 482 m away
  • Appeal window closes 14 Sept 20262 days left
    SD26B/0309WGrant Permission — Construction of a 32sq.m ground floor flat roof extension to the rear, providing a new utility room, extended kitchen an
    4 weeks from the council's decision (17 Aug 2026) · s.37 Planning and Development Act 2000 · €220 to An Coimisiún Pleanála (€110 observer) · 448 m away
  • Observations close 17 Sept 20265 days left
    ED26/0081application received — Replacing one car park space with one bike rack for bicycles to be parked for visitors to the Iona Centre. Improving acc
    5 weeks from receipt (13 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · €20 to the council · 422 m away
  • Observations close 17 Sept 20265 days left
    SD26B/0372Wapplication received — Retention for a flat roof over the existing front porch extension; revised ground floor front elevation fenestration; re
    5 weeks from receipt (13 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · €20 to the council · 375 m away
  • Observations close 22 Sept 202610 days left
    SD26A/0197Wapplication received — The proposed development will consist of the subdivision of the existing rear garden space, to enable the erection of 2n
    5 weeks from receipt (18 Aug 2026) · s.34 Planning and Development Act 2000 · art. 29 Regulations 2001 · €20 to the council · 146 m away
Sources: acp, consult, moderngov, npad, rzlt · fetched 12 Sept 2026, 00:05
SourceLicenceFetchedLink
acpCC-BY-4.012 Sept 2026, 00:05open
consultpublic12 Sept 2026, 02:04open
moderngovpublic12 Sept 2026, 21:48open
npadCC-BY-4.012 Sept 2026, 20:38open
rzltCC-BY-4.012 Sept 2026, 00:23open

Where this is

Townland
Knocklyon
Settlement
Dublin city and suburbs
Electoral division
Ballyboden
Local electoral area
Rathfarnham-Templeogue
Local authority
South Dublin County Council
Parcel
Tailte Éireann 1762675 (freehold), 360 m²

Census 2022, small area 267013006

366
people
125
households
128
dwellings

84% owner-occupied, 11.2% privately rented, 0.8% social. Vacancy 2.3%.

Sources: places, parcels · fetched 11 Sept 2026, 21:28
SourceLicenceFetchedLink
placesCC-BY-4.011 Sept 2026, 21:28open
parcelsCC-BY-4.011 Sept 2026, 19:06open

Zoning evaluated against the point

R2 — Existing residential south dublin county development plan 2022 2028 · 8 Mar 20228 Mar 2028

RES: To protect and/or improve residential amenity

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
SourceLicenceFetchedLink
zoningCC-BY-4.012 Sept 2026, 02:04open

Designations and constraints within 500 m

No OPW CFRAM/NIFM flood extent within 500 m.

DesignationCountExamples
NIAH-recorded building1Ros Mór
Radon risk area1About 1 in 20 homes in this area is likely to have high radon levels
Sources: constraints, constraints.niah, constraints.radon · fetched 11 Sept 2026, 19:11
SourceLicenceFetchedLink
constraintsmixed — CC-BY-4.0 except OPW flood (CC-BY-NC-ND-4.0, publishable=false)11 Sept 2026, 19:11open
constraints.niahCC-BY-4.011 Sept 2026, 19:11open
constraints.radonCC-BY-4.011 Sept 2026, 19:11open

Residential Zoned Land Tax

This site is on an RZLT mapthe draft map 2027 and the final map 2026 (0.1 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
SourceLicenceFetchedLink
rzltCC-BY-4.012 Sept 2026, 00:23open

Planning applications 87 in 5 years within 500 m

Open for observation

  • Iona Pastoral Community Centre, Idrone Avenue, Dublin, D16 T299 observations close 17 Sept 2026 · 5 days left
    Replacing one car park space with one bike rack for bicycles to be parked for visitors to the Iona Centre. Improving accessibility and encouraging cyclists to come to the centre.
    ED26/0081received 13 Aug 2026422 m away
  • 22 Coolamber Park, Knocklyon, Dublin 16, D16 A0P0 observations close 17 Sept 2026 · 5 days left
    Retention for a flat roof over the existing front porch extension; revised ground floor front elevation fenestration; revised first floor side elevation fenestration.
    SD26B/0372Wreceived 13 Aug 2026375 m away
  • 5/5A, Knocklyon Cottages, Knocklyon Road, Knocklyon, Dublin 16 observations close 22 Sept 2026 · 10 days left
    The proposed development will consist of the subdivision of the existing rear garden space, to enable the erection of 2no. single storey, 3-bed, detached dwellings; access to the development will be provided via a new roadway, from Knocklyon Rd; and, all associated site works, including landscaping, boundary walls and treatments, Suds drainage, to facilitate the development.
    SD26A/0197Wreceived 18 Aug 2026146 m away

Recent decisions and applications

57
Grant permission
5
(undecided)
4
Grant permission for retention
2
Invalid application
  • 60, Elkwood, Ballyroan, Dublin 16, D16A373 Invalid - site notice
    Construction of a 2 storey rear extension to existing dwelling
    SD26B/0361Wreceived 4 Aug 2026decided 17 Aug 2026482 m away
  • 66, Knockcullen Drive, Knocklyon, Dublin, D16 K0H2 Referral
    Demolition of portions of the existing rear and side external walls at ground floor level and the rear wall of the first floor; Demolition of the existing garage roof and the existing rear utility room, and the construction of (a) A single storey extension to the rear and side of the existing dwelling; (b) The partial conversion of the existing garage to habitable accommodation; (c) A first floor extension to the rear of dwelling, including the extension of the existing roof over the proposed first floor extension; (d) The widening of the existing vehicular entrance; and (e) Associated external works, including a new front entrance, entrance steps, planter, landscaping and all ancillary site development works.
    SD26B/0344received 24 Jul 2026286 m away
  • 18 Idrone Park, Knocklyon, Dublin 16, D16 PX88 Grant permission
    Construction of a 32sq.m ground floor flat roof extension to the rear, providing a new utility room, extended kitchen and dining room with no.1 new rooflight; Attic conversion to the rear extending the property to two storeys to include two additional bedrooms, office space, shower room and en-suite; Two roof lights to the north facing front elevation; External insulation with brick finish to the front, side and rear facades; Ancillary site works as required to facilitate construction works.
    SD26B/0309Wreceived 22 Jun 2026decided 17 Aug 2026448 m away
  • 29, Scholarstown Park, Scholarstown, Dublin 16, D16 E2T2 Request additional information
    Dormer extension at existing attic level and an extension at first-floor level to facilitate the conversion of the existing three-storey, three-bedroom semi-detached dwelling into a three-storey, four-bedroom dwelling. The proposed works will include (i) modifications to part of the existing roof over the rear ground-floor kitchen area to incorporate a pitched roof, (ii) Construction of a first-floor extension with associated internal reconfiguration, (iii) Construction of a dormer extension with reconfiguration of the attic layout to provide an additional bedroom, (iv) Removal and replacement of existing rear first-floor windows, installation of a new dormer window and ground-floor bi-fold door, (v) Relocation/reuse of the existing ground-floor skylight at dormer level, and all associated site works, landscaping, drainage, and ancillary service works.
    SD26B/0242Wreceived 20 May 2026decided 14 Jul 2026307 m away
  • 42, Scholarstown Park, Scholarstown, Dublin 16 Declared exempt
    (a) Removal of 12m2 Conservatory & Construct a new 24.5m2 Ground Floor Single Storey extension to rear of the property. (b) Install external insulation to all external walls of the property. The front Facade external insulation will remain brick style finish in keeping with existing local properties.
    ED26/0040received 6 May 2026decided 29 May 2026352 m away
  • 68, Dargle Wood, Dublin 16 Refuse ext. of duration of permission
    Construction of a two storey extension at the side and a single storey extension to the rear of existing semi-detached house; canopy at the front of the house above the main entrance and continuing over a new single storey bay window; 3 no. west facing roof lights to the rear of the house; 3 no. new west-facing roof-lights to the single storey extension to the rear of the house; 3 no. windows to the new end wall and gable; connection into existing public mains; internal reconfiguration; all with a total floor area of approx.. 49sq.m and associated site works.
    SD21B/0201/EPreceived 8 Apr 2026decided 2 Jun 202641 m away
  • 16a, Templeroan Green, Rathfarnham, Dublin 14, D16E8W7 Grant permission
    Demolition of existing side shed, new single storey front and side extension, alteration to front entrance with new porch, two storey extension to the side/ rear of the dwelling, new dormer type window to the rear roof, Velux type window to the front, some internal alterations and associated site works.
    SD26B/0097Wreceived 9 Mar 2026decided 27 Apr 2026384 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
SourceLicenceFetchedLink
npadCC-BY-4.012 Sept 2026, 20:38open

Appeals 7 in 5 years within 500 m

Source: acp · fetched 12 Sept 2026, 00:05
SourceLicenceFetchedLink
acpCC-BY-4.012 Sept 2026, 00:05open

Commencement notices 18 in 3 years within 500 m

  • 29 Templeroan Way, Dublin 16, Dublin, D16 C8C4 Opt out commencement notice
    20 Jul 2026CN0145125SDSD25B/0541W354 m away
  • 21 Ashton Close, Dublin, D16 V528 Opt out commencement notice
    2 Jun 2026CN0143051SDSD24B/0373183 m away
  • 16 Idrone Park, Knocklyon, South Dublin, D16 PX29 Opt out commencement notice
    29 May 2026CN0142833SDSD26B/0062W470 m away
  • 20 Coolamber Park, Knocklyon, South Dublin, D16 E4W0 Short commencement notice
    28 Mar 2026CN0140086SDSD25B/0658W421 m away
  • 65 Cremorne, South Dublin, D16 A8P3 Short commencement notice
    26 Nov 2025CN0136066SDSD23B/0504461 m away
  • 22 Coolamber Park, Knocklyon, South Dublin, D16 A0P0 Short commencement notice
    21 Aug 2025CN0132272SDSD25B/0261W385 m away
  • 151 Dargle Wood, Knocklyon, South Dublin, D16 DR76 Opt out commencement notice
    18 Aug 2025CN0132095SDSD21B/0280290 m away
  • Coolamber Park, Dublin, South Dublin, D16W7Y5 Opt out commencement notice
    19 May 2025CN0129198SDSD23B/0058285 m away
  • 34 Dargle Wood, Knocklyon, South Dublin, D16 WY40 Short commencement notice
    18 Mar 2025CN0126484SDSD24B/0318W136 m away
  • 64 Knockcullen Drive, Dublin, South Dublin, D16 F7Y7 Commencement notice
    21 Jan 2025CN0124822SDSD24B/0316W319 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 11 Sept 2026, 23:29
SourceLicenceFetchedLink
bcmsCC-BY-4.011 Sept 2026, 23:29open

Sales 32 in 36 months within 500 m

€622,500
median price
€6,108/m²
median €/m²
32
sales
31
rooftop-geocoded
13
with listing detail
2
new builds

€10,000€890,000, 1 Feb 2024 to 18 Dec 2025.

AddressSoldPriceAskingTypeBeds€/m²BERDist.
57 KNOCKCULLEN DRIVE, KNOCKLYON, RATHFARNHAM18 Dec 2025€820,000€700,000Detached41336,165C3366 m
54 ASHTON AVE, KNOCKLYON, DUBLIN 1617 Oct 2025€850,000€795,000Detached41455,862C1416 m
68 DARGLE WOOD, KNOCKLYON, DUBLIN 1626 Aug 2025€645,000€595,000Semi-D41066,085C350 m
31 SCHOLARSTOWN PARK, KNOCKLYON, DUBLIN14 Aug 2025€600,000€575,000Semi-D3966,250D2298 m
60 KNOCKCULLEN DR, KNOCKLYON, DUBLIN 1631 Jul 2025€740,000€715,000Detached31395,324B3345 m
4 KNOCKLYON COTTAGES, KNOCKLYON RD, DUBLIN 1612 Jun 2025€554,000€545,000Bungalow3777,195G199 m
20 TEMPLEROAN GROVE, KNOCKLYON, DUBLIN 1622 Apr 2025€613,000€525,000Semi-D31006,130C3294 m
14 COOLAMBER PARK, TEMPLEOGUE, DUBLIN 1616 Apr 2025€890,000€725,000Semi-D4D2438 m
1 Watson Place, Ballyroan new16 Apr 2025€541,850474 m
4 ASHTON LAWN, TEMPLEOGUE, KNOCKLYON25 Mar 2025€628,000265 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
SourceLicenceFetchedLink
cara_listingsThird-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, 20:14open
pprPSI — 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, 20:31open

Consultations 3 matched by place

Source: consult · fetched 12 Sept 2026, 02:04
SourceLicenceFetchedLink
consultpublic12 Sept 2026, 02:04open

Council items 10 in 24 months

Source: moderngov · fetched 12 Sept 2026, 21:48
SourceLicenceFetchedLink
moderngovpublic12 Sept 2026, 21:48open

Capacity and public land

No publishable utility-capacity record within the radius. 13 records from Esb substation withheld: source licence forbids redistribution; see the operator's own register.

Public land (LDA register of relevant lands)

  • Dublin City CouncilDublin city and suburbs
    1.4 hafolio DN8319F31 m awayas of 1 Apr 2023
  • Dublin City CouncilDublin city and suburbs
    0.11 hafolio DN8319F48 m awayas of 1 Apr 2023
  • South Dublin County CouncilDublin city and suburbs
    0.75 hafolio DN109017F72 m awayas of 1 Apr 2023
  • South Dublin County CouncilDublin city and suburbs
    0.3 hafolio DN189443F116 m awayas of 1 Apr 2023
  • Dublin City CouncilDublin city and suburbs
    0.35 hafolio DN34939F199 m awayas of 1 Apr 2023
  • South Dublin County CouncilDublin city and suburbs
    0.45 hafolio DN189443F213 m awayas of 1 Apr 2023
  • Dublin City CouncilDublin city and suburbs
    0.7 hafolio DN43130F241 m awayas of 1 Apr 2023
  • Dublin City CouncilDublin city and suburbs
    0.25 hafolio DN43130F241 m awayas of 1 Apr 2023
Sources: esbn, lda_lands · fetched 11 Sept 2026, 16:42
SourceLicenceFetchedLink
esbnall-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 only11 Sept 2026, 16:42open
lda_landsCC-BY-4.011 Sept 2026, 16:43open

Schools and public transport within 1.0 km

Schools

  • SCOIL COLMCILLE NAOFA
    primary721 pupilsCatholic344 m
  • ST COLMCILLE SENIOR N S
    primary744 pupilsCatholic344 m
  • Sancta Maria College
    postprimary577 pupilsCATHOLIC485 m
  • Saplings Special School
    primary30 pupilsMulti Denominational630 m
  • St. Colmcille's Community School
    postprimary727 pupilsINTER DENOMINATIONAL654 m
  • ST PATRICK GNS
    primary472 pupilsCatholic773 m
  • Coláiste Éanna
    postprimary618 pupilsCATHOLIC849 m

Stops 35 · routes 15, 15B, 15D, 49n, 65B, 74, 750, F1, S6, S8, UM08

  • Knockaire
    1569 m
  • Knockaire
    1587 m
  • Dargle Wood
    15308 m
  • Dargle Wood
    15331 m
  • Knockcullen Rise
    15339 m
  • Knockcullen Rise
    15387 m
  • Templeroan Estate
    15B, S8408 m
  • Templeroan Estate
    15B, 49n, S8427 m
Sources: gtfs, schools · fetched 11 Sept 2026, 19:16
SourceLicenceFetchedLink
gtfsCC-BY-4.011 Sept 2026, 19:16open
schoolsCC-BY-4.011 Sept 2026, 16:41open

Sources used in this report

SectionSourceLicenceFetched
LocationplacesCC-BY-4.011 Sept 2026, 21:28
ParcelparcelsCC-BY-4.011 Sept 2026, 19:06
ZoningzoningCC-BY-4.012 Sept 2026, 02:04
Constraintsconstraintsmixed — CC-BY-4.0 except OPW flood (CC-BY-NC-ND-4.0, publishable=false)11 Sept 2026, 19:11
Constraintsconstraints.niahCC-BY-4.011 Sept 2026, 19:11
Constraintsconstraints.radonCC-BY-4.011 Sept 2026, 19:11
RzltrzltCC-BY-4.012 Sept 2026, 00:23
PlanningnpadCC-BY-4.012 Sept 2026, 20:38
AppealsacpCC-BY-4.012 Sept 2026, 00:05
CommencementsbcmsCC-BY-4.011 Sept 2026, 23:29
Salescara_listingsThird-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
SalespprPSI — 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
Consultationsconsultpublic12 Sept 2026, 02:04
Council itemsmoderngovpublic12 Sept 2026, 21:48
Capacityesbnall-rights-reserved (esbnetworks.ie disclaimer: personal/non-commercial, no modification or republication without written ESB permission) — permission NOT sought · not redistributable, flag only11 Sept 2026, 16:42
Public landlda_landsCC-BY-4.011 Sept 2026, 16:43
Projectssocial_housingCC-BY-SA-4.011 Sept 2026, 20:13
AmenitiesgtfsCC-BY-4.011 Sept 2026, 19:16
AmenitiesschoolsCC-BY-4.011 Sept 2026, 16:41
DeadlinesacpCC-BY-4.012 Sept 2026, 00:05
Deadlinesconsultpublic12 Sept 2026, 02:04
Deadlinesmoderngovpublic12 Sept 2026, 21:48
DeadlinesnpadCC-BY-4.012 Sept 2026, 20:38
DeadlinesrzltCC-BY-4.012 Sept 2026, 00:23

Generated 12 Sept 2026, 22:38 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.