PlanningRegister.ie
Back
Planning report · South Dublin County Council · 500 m around the house · the last 12 months · 31 Oct 2026, 21:10

Idrone Avenue

53.28332, -6.31948

Homes here mostly date from the 1970s. Home extensions nearby almost always get approved (98%). 2 applications nearby open for comments.

See on the mapWatch this area
Distance
250 m500 m1 km2 km
Time
12 months2 years5 years
98%of home extensions approved nearbyn=401 · 1.5 km · 10 yrs55 daystypical wait for a decisionmiddle half 50–552open for comments nearbyclose 16 Nov–18 Nov

How planning works, with this area's numbers

steps can overlap · medians for home extensions within 1.5 km, 10 years
  1. 1ApplySite notice up, plans online
  2. 2Comments5 weeks, €20. Comment to keep your right to appeal
  3. 3Decision8 weeks by law. Here 55 days
  4. 4Appeal window4 weeks after the decision
  5. 5AppealHere about 5 months
  6. 6PermissionLasts 5 years
  7. 7StartStart notice to the council. Here about 4 months after
  8. 8Sign-offCompletion cert, or the owner opts out
Question 1

What's the planning story of this house?

Figure 1

When it was built, and the rules since

Most homes here were built 1971–80, after planning permission began and before building regulations (1992).

Timeline from 1955: planning permission needed from October 1964, building regulations from June 1992, building records online from March 2014, sign-off opt-out from September 2015. Most homes here were built 1971–1980.1960197019801990200020102020Oct 1964permission neededJun 1992building regulationsMar 2014building records onlineSep 2015owners may opt out of sign-offThis houseBuilt: most homes in this small area date from 1971–1980 (census estimate)most built

Each line is a rule that applies to work done after it.

MeasuredEstimatecouncil register via NPAD · build years: CSO Census 2022, small area

On this site
R2
Zoning · Existing residential
No
Protected or listed · on the council's list
No
Vacant land tax · lived-in homes don't pay it
1 in 20
Radon (EPA) · homes with high radon
Zoning, protection, tax and flood: the detail
ZoningR2 · Existing residential
What it says

RES: To protect and/or improve residential amenity

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.

south dublin county development plan 2022 2028 · 8 Mar 2022 – 8 Mar 2028

Protected building1 within 100 m Two Storey House
Heritage inventory1 within 100 m Idrone
Radon1 in 20 homes have high radon (EPA)

Not on this site: monument zone, conservation area, EU nature site, EU bird site, natural heritage area, tree order, landslide risk, derelict list.

Vacant land taxNo lived-in homes don't pay it
Flood riskNone mapped within 500 m
Within 500 mCountFor example
Heritage inventory buildings4Knocklyon House; Willow House
Radon grid squares2
How we work this out
'On this site' means the record's own map outline touches the registered parcel (or a 12 m circle round the point where there is no parcel). Only the council's own list confirms a protected building; ask the council if in doubt. The council's map for the vacant land tax shows this spot inside an area of existing homes. Homes people live in, and their gardens, don't pay the tax. The OPW flood map's licence lets us show a yes/no only.
Sources: Development plan zoning (councils), National Inventory of Architectural Heritage, EPA radon map, Records of Protected Structures, Residential Zoned Land Tax maps, Constraint layers (bundle) · fetched 25 Oct 2026, 23:43
SourceLicenceFetchedLink
Development plan zoning (councils)CC BY 4.025 Oct 2026, 23:06open
National Inventory of Architectural HeritageCC BY 4.027 Sept 2026, 19:35open
EPA radon mapCC BY 4.027 Sept 2026, 19:36open
Records of Protected StructuresCC BY 4.0—open
Residential Zoned Land Tax mapsCC BY 4.025 Oct 2026, 23:43open
Constraint layers (bundle)CC BY 4.0, CC BY-NC-ND 4.027 Sept 2026, 19:37open
How we work this out
Applications whose site outline (or map point) falls on this property. 'No sign building has started' means we found no notice to the council's building control office; small jobs don't always file one, so ask. A missing completion certificate is not proof of a problem: an owner can opt out of official sign-off for a house or extension built for themselves.
Sources: Building Control Management System (commencement notices), National Planning Application Database · fetched 31 Oct 2026, 05:04
SourceLicenceFetchedLink
Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
Question 2

Could you extend?

Nothing on this site restricts it: not protected, not in a conservation area.

Figure 2

What happened to applications like yours

Extensions are almost always approved here: 93–100% by type. A new house in a garden is harder: 82% approved, and 1 in 2 are asked for more information.

Single-storey rear67 decided · more info asked 10%
97% · council 96%
Two-storey rear11 decided · more info asked 27%
100% · council 99%
Two-storey side14 decided · more info asked 43%
93% · council 94%
Single-storey side17 decided · more info asked 12%
94% · council 94%
Attic or dormer226 decided · more info asked 16%
99% · council 98%
First-floor11 decided · more info asked 0%
100% · council 92%
Garage conversion15 decided · more info asked 20%
100% · council 99%
Porch or front14 decided · more info asked 7%
100% · council 96%
New house in a garden or site22 decided · more info asked 59%
82% · council 62%
Approved nearbySouth Dublin overall

Decided applications within 1.5 km, received in the last 10 years. The kind of work is read from each description.

CalculatedOur classificationcouncil register via NPAD · 397 nearby, 2,908 council-wide

Extensions and refusals right beside you 2 within 250 m · 0 refused within 100 m

Extensions and refusals near you 2 extensions within 250 m · the last 12 months

1 approved1 no decision or withdrawn
KindAppliedApprovedRefused
Dormer or attic21—

Refused within 100 m 0 in the last 12 months

Nothing refused this close in the last 12 months.

    How we work this out
    Home extensions are read from the application's description (extension, attic or dormer, porch, garage conversion, garden room), so a few may be missed or mislabelled. The kind is the first that fits: a dormer with a rear extension counts as a dormer. Refusal reasons come from An Coimisiún Pleanála's inspector reports, so they exist only where the refusal was appealed (Dún Laoghaire-Rathdown so far). The council's own reasons are on its planning file.
    Sources: National Planning Application Database, An Coimisiún Pleanála cases (ArcGIS feed) · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Sources: An Coimisiún Pleanála cases (ArcGIS feed), Building Control Management System (commencement notices), National Planning Application Database · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Question 3

    How long, and what if someone objects?

    Figure 3

    A home extension's journey here

    A decision takes 55 days. 1 in 6 is asked for more information, which adds about 57 days. Building starts about 4 months after permission.

    Comments open: 5 weeks · €20; Council decision: 55 days; If more info asked (1 in 6): 110 days; Appeal window: 4 weeks; If appealed: +152 days; Building starts: 118 days after permission0 mo3 mo6 mo9 mo12 mo15 moComments openComments close 5 weeks after the application is lodged5 weeks · €20Council decisionDecision: median 55 days, middle half 50–55 (n=337)55 daysIf more info asked (1 in 6)With further information: median 110 days (n=64)110 daysAppeal windowAnyone who commented can appeal within 4 weeks of the decision4 weeksIf appealedAt An Coimisiún Pleanála: median 152 days (n=30, all appeals within 1.5 km)+152 daysBuilding startsStart notice: median 118 days after permission (n=192)118 days after permissionSigned off44% of owners opt out of sign-off

    Bars are medians; whiskers show the middle half. Medians of separate steps don't add up exactly.

    Calculated401 decided home extensions, 198 start notices, 30 decided appeals · within 1.5 km, 10 years · NPAD, BCMS, An Coimisiún Pleanála

    Figure 4

    What appeals changed

    3 of 10 appealed refusals became permissions. 1 of 20 appealed approvals were reversed.

    Refusals appealed10 decided
    3 became permissions
    Approvals appealed20 decided
    1 reversed
    Ended approvedEnded refusedWithdrawn, invalid or other

    Every appeal decided within 1.5 km in 10 years, any kind of development.

    CalculatedAn Coimisiún Pleanála cases linked to the council file

    Appeals nearby 1 in the last 12 months

    None of 1 changed the council's decision

    • 500579 Granted · Scholarstown House, Scholarstown Road, Dublin 16, D16 E2H9. · 468 m report
    Sources: An Coimisiún Pleanála cases (ArcGIS feed), Courts Service legal diary (judicial reviews), National Planning Application Database · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Courts Service legal diary (judicial reviews)© the publisher30 Oct 2026, 23:12open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Question 4

    What's changing around you?

    Street map around Idrone Avenue with 15 numbered planning items
    ⌖ the houseOpen for commentsApprovedOtherRefusedNo decision yet
    1. 123 Knocklyon Grove, Knocklyon SD26B/0466WNo decision yet · 166 m
    2. 223 Delaford Ave, Knocklyon SD26B/0459WNo decision yet · 491 m
    3. 32 Mount Alton Court, Knocklyon SD26B/0225WApproved · 93 m
    4. 4Iona Pastoral Community Centre, Idrone Avenue ED26/0081Section 5: exempt · 143 m
    5. 516 Idrone Park, Knocklyon SD26B/0062WApproved · 209 m
    6. 618 Idrone Park, Knocklyon SD26B/0309WApproved · 214 m
    7. 79, Knocklyon Close SD26B/0156WApproved · 263 m
    8. 8Wit's End, The Rookery SD26A/0182WRefused · 293 m
    9. 965, Knockaire SD26B/0419WNo decision yet · 328 m
    10. 102, Knocklyon Avenue SD26B/0032WApproved · 368 m
    11. 1130, Idrone Drive SD26B/0092Approved · 384 m
    12. 1275, Idrone Park ED26/0098Section 5: exempt · 412 m
    13. 13Orlagh roundabout, Scholarstown Road ED26/0027Section 5: exempt · 446 m
    14. 14SDCC Lands @28 Locations PT8SD422No decision yet · 451 m
    15. 1522 Coolamber Park, Knocklyon SD26B/0372WNo decision yet · 485 m
    Figure 5

    What happens to applications within 500 m

    Permission isn't building. Of 58 permissions since 2016, 26 show a start notice and 1 has a completion certificate. Most owners opt out of sign-off.

    75 applications lodged within 500 m. Council: 59 approved, 3 refused. After appeals: 58 approved. Of those: 1 signed off, 15 built with the owner's opt-out, 10 started, 31 with no start notice found, 1 ran out.LODGEDCOUNCIL DECISIONAFTER APPEALSWHAT HAPPENED NEXT59: lodged → approved3: lodged → refused7: lodged → withdrawn or invalid6: lodged → undecided58: approved → approved3: refused → refused7: withdrawn or invalid → withdrawn6: undecided → undecided1 approved by the council, refused after an appeal31: approved → no start notice found15: approved → built, owner opted out10: approved → started, not signed off1: approved → signed off1: approved → ran out75 lodged75 lodged59 approved59 approved3 refused3 refused7 withdrawn or invalid7 withdrawn or invalid6 undecided6 undecided58 approved58 approved4 refused4 refused7 withdrawn7 withdrawn6 undecided6 undecided31 no start notice found31 no start notice found15 built, owner opted out15 built, owner opted out10 started, not signed off10 started, not signed off1 signed off1 signed off1 ran out1 ran out

    Purple bands are refusals turned into permissions on appeal. "No start notice found" includes small jobs that never needed one and notices we couldn't match.

    Measured75 applications in 10 years · NPAD, An Coimisiún Pleanála, BCMS start notices and completion certificates

    Figure 6

    The next 30 days

    2 deadlines within 500 m; the first closes 16 Nov 2026.

    2 deadlines in the next 30 days: 2026-11-16 SD26B/0459W: application received — Conversion of existing garage to habitable use, construction of a single-storey flat-roof extension to the rear, constr; 2026-11-18 SD26B/0466W: application received — Single storey extension, a rear attic dormer extension, 3 no. roof windows to front elevation, alterations to existing rtoday5 Nov10 Nov15 Nov20 Nov25 Nov30 NovSD26B/0459W: application received — Conversion of existing garage to habitable use, construction of a single-storey flat-roof extension to the rear, constr · 491 m away · 2026-11-16SD26B/0466W: application received — Single storey extension, a rear attic dormer extension, 3 no. roof windows to front elevation, alterations to existing r · 166 m away · 2026-11-18
    Comments close
    • Comments close 16 Nov 202616 days left
      2SD26B/0459W · application received — Conversion of existing garage to habitable use, construction of a single-storey flat-roof…
      €20 to the council · 491 m away
    • Comments close 18 Nov 202618 days left
      1SD26B/0466W · application received — Single storey extension, a rear attic dormer extension, 3 no. roof windows to front elevation,…
      €20 to the council · 166 m away

    Measuredcouncil registers and An Coimisiún Pleanála · deadlines worked out from the dates on file

    Figure 7

    Applications within 500 m, by year

    Between 4 and 14 a year; busiest 2022. 95% of decisions were approvals.

    2021: 20, 2022: 14, 2023: 12, 2024: 4, 2025: 13, 2026: 12051015202021: 15 approved2021: 1 refused2021: 4 withdrawn or invalid20’21*2022: 12 approved2022: 1 refused2022: 1 withdrawn or invalid14’222023: 10 approved2023: 2 withdrawn or invalid12’232024: 4 approved4’242025: 12 approved2025: 1 undecided13’252026: 6 approved2026: 1 refused2026: 5 undecided12’26*
    ApprovedRefusedWithdrawn or invalidUndecided

    2021 and 2026 are part years (*). Exemption requests and time extensions are left out.

    Measuredcouncil register via NPAD

    Open for comments €20 to comment

    Every application within 500 m 15 in the last 12 months

    See every application on the map

    How we work this out
    Descriptions are shortened by the national planning database (to 80 characters in Dún Laoghaire-Rathdown, 70 in Fingal), and it does not publish applicants' names.
    Sources: National Planning Application Database, An Coimisiún Pleanála cases (ArcGIS feed), Building Control Management System (commencement notices) · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
    Building work nearby 6 in the last 12 months
    6 no sign-off needed
    • 45 Páirc Orlaí, Dublin 16, Dublin, D16 T8Y1 · 10 Sept 2026 · start notice, opted out no sign-off needed · SD25B/0200W · 457 m
    • 2 Knocklyon Avenue, Dublin 16, Dublin, D16 H3K8 · 7 Sept 2026 · start notice, opted out no sign-off needed · SD26B/0032W · 388 m
    • 3 Knocklyon Avenue, Dublin 16, Dublin, D16 Y9P0 · 20 Aug 2026 · start notice, opted out no sign-off needed · SD21B/0649 · 435 m
    • 23 Knocklyon Close, Dublin, D16FA44 · 14 Jul 2026 · 1 homes · start notice, opted out no sign-off needed · SD22A/0450 · 238 m
    • 16 Idrone Park, Knocklyon, South Dublin, D16 PX29 · 29 May 2026 · start notice, opted out no sign-off needed · SD26B/0062W · 228 m
    • 5A Knocklyon Avenue, Knocklyon, South Dublin, D16 WV38 · 27 Mar 2026 · short notice no sign-off needed · SD25B/0433W · 412 m
    How we work this out
    Each row is a notice the builder sent to the council's building control office before work started. One notice can cover many homes. 'Signed off as finished' means a completion certificate is on file; work done under an opt-out or a short notice doesn't need one.
    Source: Building Control Management System (commencement notices) · fetched 31 Oct 2026, 02:56
    SourceLicenceFetchedLink
    Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
    Homes coming 0 not started
    • Castlefield, Knocklyon, Dublin 16 · Stage 2 pre planning · 17 homes · 206 m
    • Homeville, Knocklyon, Dublin 16 · Completed · 16 homes · 206 m
    How we work this out
    Schemes of 10 or more homes approved since 2021, from the council and An Coimisiún Pleanála registers. 'Building started' means the builder told the council's building control office that work was starting (a commencement notice).
    Sources: An Coimisiún Pleanála cases (ArcGIS feed), Building Control Management System (commencement notices), National Planning Application Database, Social housing construction status report · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Social housing construction status reportCC BY-SA 4.023 Oct 2026, 23:02open
    Named places nearby: estate, schemes, crèches, schools

    Named places estate, developments, inspections

    Developments within 1.0 km

    SchemeHomesProgressDistance
    Knocklyon to Ballyboden Active and Sustainable Travel Scheme——17 m
    SDCC Lands @28 Locations——451 m
    Scholarstown House76—473 m
    Castlefield Avenue3131 not started (2026-Q2)552 m
    Proposed Social and Affordable Mixed Tenure Housing Developm29—552 m
    Dodder Greenway——656 m
    D24 Neighbourhood——704 m
    Knocklyon Park——778 m

    Crèches and schools inspected

    NameLatest inspectionDistance
    Eager Beavers Montessori · Crèche9 May 2025 · report · Tusla Early Years Inspectorate290 m
    Tigers Childcare · Crèche12 Jun 2025 · report · Tusla Early Years Inspectorate427 m
    Naíonra Chnoc Liamhna · Crèche15 Apr 2025 · report · Tusla Early Years Inspectorate447 m
    Delaford Montessori · Crèche18 Oct 2024 · report · Tusla Early Years Inspectorate499 m
    Tigers Childcare & Nexus Preschool · Crèche4 Mar 2026 · report · Tusla Early Years Inspectorate526 m
    Little Penguins · Crèche16 Apr 2026 · report · Tusla Early Years Inspectorate559 m
    Let's Play Pre-School · Crèche7 Jun 2024 · report · Tusla Early Years Inspectorate573 m
    Cool Kidz Creche · Crèche26 Mar 2026 · report · Tusla Early Years Inspectorate587 m
    How we work this out
    Organisations only: a person named on an application is never listed. Inspection dates and links are the publisher's; read their report for the findings.
    Sources: Dublin housing delivery pipeline, National Planning Application Database, Department of Education school list, Tusla early years register · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    Dublin housing delivery pipelineCC BY 4.026 Oct 2026, 23:00open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Department of Education school listCC BY 4.027 Oct 2026, 23:04open
    Tusla early years registerPublic register28 Oct 2026, 23:19open
    How busy is this area Busier than most of South Dublin County Council.
    Homes approved
    Here155
    Council middle0
    Homes started
    Here82
    Council middle4
    How we work this out
    Homes approved counts schemes of 10 or more homes (one-off houses are not included). Homes started counts every home in a notice that building work was starting. The council figure is the middle value across the council's built-up squares of the same area (3.1 km², about a 1 km circle), so half of them saw more and half fewer.
    Sources: An Coimisiún Pleanála cases (ArcGIS feed), Building Control Management System (commencement notices), National Planning Application Database · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    An Coimisiún Pleanála cases (ArcGIS feed)CC BY 4.030 Oct 2026, 23:01open
    Building Control Management System (commencement notices)CC BY 4.031 Oct 2026, 02:56open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Question 5

    What's the area like?

    Figure 8

    This street block against the council

    3% of homes built before 1971 (council 18%). 95% owner-occupied (council 67%).

    Homes built before 1971
    3% · council 18%
    Homes built since 2001
    2% · council 27%
    Owner-occupied
    95% · council 67%
    Rented
    2% · council 29%
    Children under 15
    9% · council 21%
    Aged 65 and over
    41% · council 13%
    Households with 2+ cars
    56% · council 40%
    Work mainly from home
    21% · council 10%
    This small area (215 people)South Dublin

    MeasuredCSO Census 2022, Small Area Population Statistics (CC BY 4.0) · small area 267086001

    Road noise
    55–59 dB
    day–night average (EPA 2022)
    Bus
    178 m
    Knocklyon Shop Cntr · 15 · busiest stop within 500 m: 12 an hour at peak
    Radon
    1 in 20
    homes here likely high (EPA). Test it
    Nearest school
    230 m
    Scoil Colmcille Naofa, 721 pupils
    Homes sold nearby
    30
    in 3 years (Property Price Register)
    Schools, stops and the council

    Schools

    • Scoil Colmcille Naofa · primary · 721 pupils · 230 m
    • St Colmcille Senior NS · primary · 744 pupils · 230 m
    • Gaelscoil Chnoc Liamhna · primary · 233 pupils · 573 m
    • St. Colmcille's Community School · postprimary · 727 pupils · 603 m

    Stops 35

    • Knocklyon Shop Cntr · 15 · 8/hour at peak · 178 m
    • Knocklyon Shop Cntr · 15 · 7/hour at peak · 192 m
    • Dargle Wood · 15 · 7/hour at peak · 314 m
    • Dargle Wood · 15 · 8/hour at peak · 318 m
    • St Colmcilles Way · 15, S8 · 12/hour at peak · 439 m
    • St Colmcilles Way · 15, 49n, S8 · 10/hour at peak · 471 m
    • Knockaire · 15 · 8/hour at peak · 495 m
    • St Colmcille's CS · 49n, S8 · 4/hour at peak · 510 m

    Schools growing or shrinking planning in 3 years · pupils last year

    • Scoil Colmcille Naofa · 230 m-2.3% pupils (721)
    • St Colmcille Senior NS · 230 m-1.7% pupils (744)
    • Gaelscoil Chnoc Liamhna · 573 m+6.4% pupils (233)
    • St. Colmcille's Community School · 603 m+0.3% pupils (727)

    Open consultations

    Council meetings 16 items

    Public land

    • South Dublin County Council · 0.1 ha · 32 m
    • Dublin City Council · 0.74 ha · 213 m
    • Dublin City Council · 1.4 ha · 291 m
    • South Dublin County Council · 0.18 ha · 300 m
    • Dublin City Council · 0.35 ha · 301 m
    • South Dublin County Council · 0.87 ha · 420 m
    Sources: Public transport stops and routes (NTA GTFS), Department of Education school list, National Planning Application Database, Council consultation portals, Council meetings (ModernGov), Land Development Agency public land register, cso_saps_2022, National Transport Authority, Fingal County Council and Dún Laoghaire-Rathdown County Council development plan layers (CC BY 4.0), dartplus.ie project extents over NTA GTFS rail shapes (CC BY 4.0), EPA strategic noise maps, Fingal County Council · fetched 31 Oct 2026, 05:04
    SourceLicenceFetchedLink
    Public transport stops and routes (NTA GTFS)CC BY 4.025 Oct 2026, 23:02open
    Department of Education school listCC BY 4.027 Oct 2026, 23:04open
    National Planning Application DatabaseCC BY 4.031 Oct 2026, 05:04open
    Council consultation portalsPublic31 Oct 2026, 01:06open
    Council meetings (ModernGov)Public31 Oct 2026, 02:21open
    Land Development Agency public land registerCC BY 4.011 Sept 2026, 16:43open
    cso_saps_2022CC BY 4.0—open
    National Transport AuthorityCC BY 4.0——
    Fingal County Council and Dún Laoghaire-Rathdown County Council development plan layers (CC BY 4.0)CC BY 4.0——
    dartplus.ie project extents over NTA GTFS rail shapes (CC BY 4.0)CC BY 4.0——
    EPA strategic noise mapsCC BY 4.0——
    Fingal County CouncilCC BY 4.0——
    Question 6

    What to ask, and who

    1. Application 166 m away open for comments until 18 Nov 2026: comment?
      Ask for: The plans on the council's website (€20 to comment).
      Council
    2. Any work done without planning permission?
      Ask for: An opinion of compliance for the whole house.
      Seller · solicitor
    Reference

    Where this is, the terms, the sources

    Townland
    Knocklyon
    Electoral division
    Firhouse-Knocklyon
    Electoral area
    Firhouse-Bohernabreena
    Council
    South Dublin County Council
    Everything we found, as a list 8 lines
    • Zoned R2 (existing residential); not protected; no vacant land tax.
    • Nothing nearby looks set to change.
    • 2 applications open for comments nearby; nearest closes 18 Nov 2026.
    • St Colmcilles Way (bus 15, S8) 439 m away: 12 an hour at morning peak; 59 from all stops within 500 m.
    • Noise from road traffic mapped at 55–59 dB (day-evening-night average, EPA 2022).
    • Here (2022 census): 94% owner-occupied (council 66%); 3% of homes empty (council 4%); most built 1971–1980; 55% drive to work (council 54%).
    • 2 home extensions within 250 m since 2026. Most were dormers or attic conversions.
    • The council decides in a median 55 days (about 8 weeks); 1 in 5 is asked for more information.
    What the terms mean 8 terms
    • Vacant land tax (Residential Zoned Land Tax (RZLT)): A yearly tax of 3% of the land's value on land that is zoned for homes and serviced but left unbuilt.
    • Building started (Commencement notice (BCMS)): The builder must tell the council's building control office 14 to 28 days before work starts.
    • Signed off as finished (Certificate of Compliance on Completion): A certificate filed when a building is finished, confirming it meets the building regulations.
    • Approved (Grant of permission): The council said yes, usually with conditions.
    • Protected building (Protected structure (Record of Protected Structures)): A building the council has listed for its heritage value.
    • Comment on an application (Observation / submission): Anyone can comment on a planning application within five weeks of it being lodged, for a €20 fee.
    • Appeal (Appeal to An Coimisiún Pleanála): The applicant, or anyone who commented in time, can appeal the council's decision within four weeks.
    • What the land is zoned for (Zoning objective): The council's development plan sets what each area is for: homes, shops, open space and so on.
    Sources and licences 29
    SourcePublisherLicenceFetched
    EPA strategic noise maps—CC BY 4.0—
    Fingal County Council—CC BY 4.0—
    Fingal County Council and Dún Laoghaire-Rathdown County Council development plan layers (CC BY 4.0)—CC BY 4.0—
    National Transport Authority—CC BY 4.0—
    services-eu1.arcgis.comAn Coimisiún PleanálaCC BY 4.030 Oct 2026
    data.nbco.gov.ieNational Building Control Office (BCMS)CC BY 4.031 Oct 2026
    data.gov.ieVarious (see each layer)CC BY 4.0, CC BY-NC-ND 4.027 Sept 2026
    services-eu1.arcgis.comNational Inventory of Architectural HeritageCC BY 4.027 Sept 2026
    gis.epa.ieEnvironmental Protection AgencyCC BY 4.027 Sept 2026
    dlrcoco.citizenspace.comLocal authorities (consultation portals)Public31 Oct 2026
    www2.courts.ie—© the publisher30 Oct 2026
    cso.ie—CC BY 4.0—
    dartplus.ie project extents over NTA GTFS rail shapes (CC BY 4.0)—CC BY 4.0—
    services-eu1.arcgis.comLocal authorities (derelict sites registers)CC BY 4.026 Oct 2026
    services.arcgis.comDublin local authorities (housing delivery pipeline)CC BY 4.026 Oct 2026
    esbnetworks.ie—© the publisher · flag only11 Sept 2026
    transportforireland.ieNational Transport AuthorityCC BY 4.025 Oct 2026
    lda.ieLand Development AgencyCC BY 4.011 Sept 2026
    meetings.fingal.ieLocal authorities (council meetings)Public31 Oct 2026
    services.arcgis.comDepartment of Housing (National Planning Application Database)CC BY 4.031 Oct 2026
    services-eu1.arcgis.comTailte ÉireannCC BY 4.011 Sept 2026
    services-eu1.arcgis.comCSO, Tailte Éireann, OpenStreetMap contributorsCC BY 4.04 Oct 2026
    propertypriceregister.ieProperty Services Regulatory Authority (PPR)© PSRA, PSI licence31 Oct 2026
    data.gov.ieLocal authorities (Record of Protected Structures)CC BY 4.0—
    services.arcgis.comLocal authorities (RZLT maps)CC BY 4.025 Oct 2026
    gov.ieDepartment of EducationCC BY 4.027 Oct 2026
    gov.ieDepartment of HousingCC BY-SA 4.023 Oct 2026
    tusla.ieTusla (Early Years Inspectorate)Public register28 Oct 2026
    services.arcgis.comLocal authorities via the Department of Housing (GZT / MyPlan)CC BY 4.025 Oct 2026
    Measured
    counted from a public register
    Calculated
    a rate or median we worked out from those counts
    Our classification
    we sorted it by reading each description
    Estimate
    inferred from another source (census, map data)
    Rule summary
    the law, simplified: check before relying on it
    How we work this out
    Generated 31 Oct 2026, 21:10 from the Planning Register store; nothing was fetched live. Not a legal search: the council's planning file is the record. Deadlines come from published dates under the Planning and Development Act 2000: confirm with the council before relying on them. Street map © OpenStreetMap contributors; building outlines © Overture Maps Foundation. The text version carries every figure with its source, for an AI assistant.