Planning report · South Dublin County Council · 500 m around the house · the last 12 months · 5 Nov 2026, 09:52
Knocklyon Close
53.28527, -6.32082
Homes here mostly date from the 1970s. Home extensions nearby almost always get approved (98%). 2 applications nearby open for comments.
98%of home extensions approved nearbyn=428 · 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- 1ApplySite notice up, plans online
- 2Comments5 weeks, €20. Comment to keep your right to appeal
- 3Decision8 weeks by law. Here 55 days
- 4Appeal window4 weeks after the decision
- 5AppealHere about 5 months
- 6PermissionLasts 5 years
- 7StartStart notice to the council. Here about 4 months after
- 8Sign-offCompletion cert, or the owner opts out
What's the planning story of this house?
When it was built, and the rules since
Most homes here were built 1971–80, after planning permission began and before building regulations (1992).
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
Radon1 in 20 homes have high radon (EPA)
Not on this site: protected building, heritage inventory, 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 m | Count | For example |
|---|---|---|
| Heritage inventory buildings | 2 | Knocklyon House; Idrone |
| Radon grid squares | 3 |
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), EPA radon map, Residential Zoned Land Tax maps, Constraint layers (bundle), National Inventory of Architectural Heritage · fetched 1 Nov 2026, 23:58
| Source | Licence | Fetched | Link |
|---|---|---|---|
| Development plan zoning (councils) | CC BY 4.0 | 1 Nov 2026, 23:13 | open |
| EPA radon map | CC BY 4.0 | 27 Sept 2026, 19:36 | open |
| Residential Zoned Land Tax maps | CC BY 4.0 | 1 Nov 2026, 23:58 | open |
| Constraint layers (bundle) | CC BY 4.0, CC BY-NC-ND 4.0 | 27 Sept 2026, 19:37 | open |
| National Inventory of Architectural Heritage | CC BY 4.0 | 27 Sept 2026, 19:35 | open |
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 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
Could you extend?
Nothing on this site restricts it: not protected, not in a conservation area.
What happened to applications like yours
Extensions are almost always approved here: 88–100% by type. A new house in a garden is harder: 87% approved, and 70% are asked for more information.
Single-storey rear67 decided · more info asked 10%
97% · council 96%
Two-storey rear16 decided · more info asked 25%
100% · council 99%
Two-storey side14 decided · more info asked 43%
93% · council 94%
Single-storey side17 decided · more info asked 18%
94% · council 94%
Attic or dormer236 decided · more info asked 17%
99% · council 98%
First-floor16 decided · more info asked 6%
88% · council 92%
Garage conversion19 decided · more info asked 21%
100% · council 99%
Porch or front17 decided · more info asked 6%
100% · council 96%
New house in a garden or site23 decided · more info asked 70%
87% · 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 · 425 nearby, 2,908 council-wide
Knocklyon Close, file by file since 2021
2 of 2 decided extensions on the road were approved. New houses in side gardens or on sites: 2 of 2.
ApprovedRefusedWithdrawn or invalid
4 files with "Knocklyon Close" in the address within 600 m, other roads of the same name left out. Hover a dot for the house number and reference.
MeasuredOur classificationcouncil register via NPAD · 2021–2026
Extensions and refusals right beside you 4 within 250 m · 0 refused within 100 m
Extensions and refusals near you 4 extensions within 250 m · the last 12 months
| Kind | Applied | Approved | Refused |
|---|---|---|---|
| Dormer or attic | 2 | 1 | — |
| First-floor | 1 | 1 | — |
| Two-storey rear | 1 | 1 | — |
On Knocklyon Woods: 18 extensions in 10 years, 88% of all applications approved; most common two-storey side.
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: An Coimisiún Pleanála cases (ArcGIS feed), Building Control Management System (commencement notices), National Planning Application Database · fetched 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| An Coimisiún Pleanála cases (ArcGIS feed) | CC BY 4.0 | 30 Oct 2026, 23:01 | open |
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
How long, and what if someone objects?
A home extension's journey here
A decision takes 55 days. 1 in 6 is asked for more information, which adds about 58 days. Building starts about 4 months after permission.
Bars are medians; whiskers show the middle half. Medians of separate steps don't add up exactly.
Calculated428 decided home extensions, 215 start notices, 27 decided appeals · within 1.5 km, 10 years · NPAD, BCMS, An Coimisiún Pleanála
What appeals changed
1 of 6 appealed refusals became permissions. 2 of 21 appealed approvals were reversed.
Refusals appealed6 decided
1 became permissions
Approvals appealed21 decided
2 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
Sources: An Coimisiún Pleanála cases (ArcGIS feed), Courts Service legal diary (judicial reviews), National Planning Application Database · fetched 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| An Coimisiún Pleanála cases (ArcGIS feed) | CC BY 4.0 | 30 Oct 2026, 23:01 | open |
| Courts Service legal diary (judicial reviews) | © the publisher | 4 Nov 2026, 23:17 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
What's changing around you?
- 123 Knocklyon Grove, Knocklyon SD26B/0466W
- 223 Delaford Ave, Knocklyon SD26B/0459W
- 3Vista Montana, Firhouse Road SD17A/0364/FEP1
- 4Proposed Social and Affordable Mixed Tenure Housing Development, on SDCC land at Castlefield Avenue PT8SD359
- 523 Knocklyon Close, Dublin SD22A/0450
- 62 Knocklyon Avenue, Dublin 16 SD26B/0032W
- 716 Idrone Park, Knocklyon SD26B/0062W
- 89, Knocklyon Close SD26B/0156W
- 92 Mount Alton Court, Knocklyon SD26B/0225W
- 1018 Idrone Park, Knocklyon SD26B/0309W
- 11Iona Pastoral Community Centre, Idrone Avenue ED26/0081
- 1230, Idrone Drive SD26B/0092
- 1315, Knocklyon Park SD26B/0056W
- 1475, Idrone Park ED26/0098
- 1527, Green Acre Court SD26B/0127W
What happens to applications within 500 m
Permission isn't building. Of 69 permissions since 2016, 27 show a start notice and 1 has a completion certificate.
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.
Measured89 applications in 10 years · NPAD, An Coimisiún Pleanála, BCMS start notices and completion certificates
The next 30 days
2 deadlines within 500 m; the first closes 16 Nov 2026.
Comments close
- Comments close 16 Nov 202611 days left2SD26B/0459W · application received — Conversion of existing garage to habitable use, construction of a single-storey flat-roof…€20 to the council · 329 m away
- Comments close 18 Nov 202613 days left1SD26B/0466W · application received — Single storey extension, a rear attic dormer extension, 3 no. roof windows to front elevation,…€20 to the council · 71 m away
Measuredcouncil registers and An Coimisiún Pleanála · deadlines worked out from the dates on file
Applications within 500 m, by year
Between 6 and 20 a year; busiest 2025. 96% of decisions were approvals.
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
- 223 Delaford Ave, Knocklyon, Dublin 16, D16K3E5 comments close 16 Nov 2026Conversion of existing garage to habitable use, construction of a single-storey flat-roof extension to the…
- 123 Knocklyon Grove, Knocklyon, Dublin 16, D16 Y443 comments close 18 Nov 2026Single storey extension, a rear attic dormer extension, 3 no. roof windows to front elevation, alterations to…
Every application within 500 m 19 in the last 12 months
See every application on the map
- 65, Knockaire, Knocklyon, Dublin 16, D16 FW95 No decision yetConversion of existing attic space comprising of modification of existing roof structure, raising of existing…
- 1475, Idrone Park, Knocklyon, Dublin 16, D16 E7T1 Section 5: exemptRear extension c22m, front door to be brought forward to existing porch door. Building up right-hand side (if…
- 11Iona Pastoral Community Centre, Idrone Avenue, Dublin, D16 T299 Section 5: exemptReplacing one car park space with one bike rack for bicycles to be parked for visitors to the Iona Centre.…
- 22 Coolamber Park, Knocklyon, Dublin 16, D16 A0P0 No decision yetRetention for a flat roof over the existing front porch extension; revised ground floor front elevation…
- Pairc Ui Mhurchu, Firhouse Road, Dublin 16, D16 A2F8 ApprovedThe retention of 1.96m wide pedestrian entrance, disabled ramp, handrail, balustrading and associated site…
- SDCC Lands @28 Locations No decision yetProposed Outdoor advertising project comprising of digital advertising display units
- 1018 Idrone Park, Knocklyon, Dublin 16, D16 PX88 ApprovedConstruction of a 32sq.m ground floor flat roof extension to the rear, providing a new utility room, extended…
- 92 Mount Alton Court, Knocklyon, Dublin 16, D16 HW83 ApprovedThe development consists of re-location and enlargement of ground floor window to eastern side elevation of…
- 3Vista Montana, Firhouse Road, Knocklyon, Dublin 16. Approved(a) Demolition of existing house 'Vista Montana'; (b) construction of 11 no. 3-storey houses consisting of 1…
- 89, Knocklyon Close, Knocklyon, Dublin, D16 TP94 ApprovedAmendmetns to the first floor extension previously granted planning permission Reg Ref: SD21B/0021
- 1527, Green Acre Court, Dublin 16, D16 YF53 ApprovedPermission for a single storey extension to side of dwelling together with all associated siteworks.
- 1230, Idrone Drive, Ballyroan, Dublin 16, D16 T9W7 ApprovedProposed construction of a dormer attic extension and alterations to existing dormer to the rear and all…
- 4Proposed Social and Affordable Mixed Tenure Housing Development, on SDCC land at Castlefield Avenue, Old Knocklyon Road, Dublin 16. No decision yetThe proposed development is comprised of 29 homes and all associated open spaces and all site and development…
- 16 Idrone Park, Knocklyon, Dublin 16, D16PX29 ApprovedDemolition of an existing single story glazed conservatory and store, construction of a new 2 storey…
- 1315, Knocklyon Park, Templeogue, Dublin 16, D16 N1W8 RefusedModifications to a previously granted permission (SD25B/0061W), to include construction of a dormer to the…
- 2, Knocklyon Avenue, Knocklyon, Dublin 16, D16 H3K8 Approved(i) Demolition of single storey lean-to shed and removal of existing boundary wall to the front; (ii)…
- 20, Coolamber Park, Knocklyon, Dublin 16, D16E4W0 ApprovedConstruction of a single-storey flat-roof front extension.
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 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
| An Coimisiún Pleanála cases (ArcGIS feed) | CC BY 4.0 | 30 Oct 2026, 23:01 | open |
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
Building work nearby 8 in the last 12 months
- 62 Knocklyon Avenue, Dublin 16, Dublin, D16 H3K8 · 7 Sept 2026 · start notice, opted out no sign-off needed · SD26B/0032W · 167 m
- 3 Knocklyon Avenue, Dublin 16, Dublin, D16 Y9P0 · 20 Aug 2026 · start notice, opted out no sign-off needed · SD21B/0649 · 204 m
- 523 Knocklyon Close, Dublin, D16FA44 · 14 Jul 2026 · 1 homes · start notice, opted out no sign-off needed · SD22A/0450 · 45 m
- 716 Idrone Park, Knocklyon, South Dublin, D16 PX29 · 29 May 2026 · start notice, opted out no sign-off needed · SD26B/0062W · 190 m
- 15 Knocklyon Park, Knocklyon, South Dublin, D16 N1W8 · 28 May 2026 · short notice no sign-off needed · SD25B/0061W · 328 m
- 20 Coolamber Park, Knocklyon, South Dublin, D16 E4W0 · 28 Mar 2026 · short notice no sign-off needed · SD25B/0658W · 478 m
- 5A Knocklyon Avenue, Knocklyon, South Dublin, D16 WV38 · 27 Mar 2026 · short notice no sign-off needed · SD25B/0433W · 182 m
- 65 Cremorne, South Dublin, D16 A8P3 · 26 Nov 2025 · short notice no sign-off needed · SD23B/0504 · 437 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 5 Nov 2026, 03:55
| Source | Licence | Fetched | Link |
|---|---|---|---|
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
Homes coming 0 not started
- Castlefield, Knocklyon, Dublin 16 · Stage 2 pre planning · 17 homes · 320 m
- Homeville, Knocklyon, Dublin 16 · Completed · 16 homes · 320 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 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| An Coimisiún Pleanála cases (ArcGIS feed) | CC BY 4.0 | 30 Oct 2026, 23:01 | open |
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
| Social housing construction status report | CC BY-SA 4.0 | 23 Oct 2026, 23:02 | open |
Named places nearby: estate, schemes, crèches, schools
Named places estate, developments, inspections
Estate: Knocklyon Woods · 28 applications in 10 years · 88% approved · most common: two-storey side
Developments within 1.0 km
| Scheme | Homes | Progress | Distance |
|---|---|---|---|
| Knocklyon to Ballyboden Active and Sustainable Travel Scheme | — | — | 97 m |
| Dodder Greenway | — | — | 447 m |
| SDCC Lands @28 Locations | — | — | 459 m |
| Castlefield Avenue | 31 | 31 not started (2026-Q2) | 479 m |
| Proposed Social and Affordable Mixed Tenure Housing Developm | 29 | — | 479 m |
| D24 Neighbourhood | — | — | 625 m |
| Scholarstown House | 76 | — | 708 m |
| Former Morton’s The Firhouse Inn | 100 | — | 719 m |
Who applies most nearby
- South Dublin County Council — 2 applications, latest 1 Jul 2026
Crèches and schools inspected
| Name | Latest inspection | Distance |
|---|---|---|
| Naíonra Chnoc Liamhna · Crèche | 15 Apr 2025 · report · Tusla Early Years Inspectorate | 273 m |
| Delaford Montessori · Crèche | 18 Oct 2024 · report · Tusla Early Years Inspectorate | 280 m |
| Tigers Childcare · Crèche | 12 Jun 2025 · report · Tusla Early Years Inspectorate | 376 m |
| Eager Beavers Montessori · Crèche | 9 May 2025 · report · Tusla Early Years Inspectorate | 454 m |
| Cool Kidz Creche · Crèche | 26 Mar 2026 · report · Tusla Early Years Inspectorate | 560 m |
| Tigers Childcare & Nexus Preschool · Crèche | 4 Mar 2026 · report · Tusla Early Years Inspectorate | 738 m |
| Little Penguins · Crèche | 16 Apr 2026 · report · Tusla Early Years Inspectorate | 793 m |
| Let's Play Pre- School · Crèche | 7 Jun 2024 · report · Tusla Early Years Inspectorate | 799 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, Housing estates, National Planning Application Database, Applicant organisations (from the CRO), Department of Education school list, Tusla early years register · fetched 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| Dublin housing delivery pipeline | CC BY 4.0 | 2 Nov 2026, 23:01 | open |
| Housing estates | ODbL 1.0, CC BY-SA 4.0, CC BY 4.0 | 27 Oct 2026, 23:03 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
| Applicant organisations (from the CRO) | Derived by Planning Register | 1 Nov 2026, 23:02 | — |
| Department of Education school list | CC BY 4.0 | 27 Oct 2026, 23:04 | open |
| Tusla early years register | Public register | 4 Nov 2026, 23:36 | open |
How busy is this area Busier than most of South Dublin County Council.
Homes approved
Here155
Council middle0
Homes started
Here82
Council middle2
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 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| An Coimisiún Pleanála cases (ArcGIS feed) | CC BY 4.0 | 30 Oct 2026, 23:01 | open |
| Building Control Management System (commencement notices) | CC BY 4.0 | 5 Nov 2026, 03:55 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
What's the area like?
This street block against the council
4% of homes built before 1971 (council 18%). 98% owner-occupied (council 67%).
Homes built before 1971
4% · council 18%
Homes built since 2001
3% · council 27%
Owner-occupied
98% · council 67%
Rented
1% · council 29%
Children under 15
17% · council 21%
Aged 65 and over
29% · council 13%
Households with 2+ cars
66% · council 40%
Work mainly from home
13% · council 10%
This small area (328 people)South Dublin
MeasuredCSO Census 2022, Small Area Population Statistics (CC BY 4.0) · small area 267086002
Road noise
55–59 dB
day–night average (EPA 2022)
Bus
413 m
Knocklyon Shop Cntr · 15 · busiest stop within 500 m: 10 an hour at peak
Radon
1 in 20
homes here likely high (EPA). Test it
Nearest school
328 m
St Colmcille Senior NS, 744 pupils
Homes sold nearby
26
in 3 years (Property Price Register)
Schools, stops and the council
Schools
- St Colmcille Senior NS · primary · 744 pupils · 328 m
- Scoil Colmcille Naofa · primary · 721 pupils · 328 m
- Gaelscoil Chnoc Liamhna · primary · 233 pupils · 423 m
- St. Colmcille's Community School · postprimary · 727 pupils · 836 m
Stops 31
- Knocklyon Shop Cntr · 15 · 8/hour at peak · 413 m
- Knocklyon Shop Cntr · 15 · 7/hour at peak · 426 m
- Knocklyon Avenue · 65B, F1, S6 · 9/hour at peak · 434 m
- Green Acre Ct · 65B, F1, S6 · 9/hour at peak · 463 m
- Knocklyon Avenue · 65B, F1, S6 · 10/hour at peak · 464 m
- Dargle Wood · 15 · 8/hour at peak · 499 m
- Dargle Wood · 15 · 7/hour at peak · 504 m
- Green Acre Ct · 65B, F1, S6, UM08 · 10/hour at peak · 508 m
Schools growing or shrinking planning in 3 years · pupils last year
- St Colmcille Senior NS · 328 m-1.7% pupils (744)
- Scoil Colmcille Naofa · 328 m-2.3% pupils (721)
- Gaelscoil Chnoc Liamhna · 423 m+6.4% pupils (233)
- St. Colmcille's Community School · 836 m+0.3% pupils (727)
Council meetings 16 items
- 12 May 2026 · With regard to St Josephs burial Ground in Bohernabreena, are the Council any closer to identifying…
- 12 May 2026 · Please advise which footpaths are listed for repairs in the Knocklyon area for 2026 and what is the…
- 11 May 2026 · PROPOSED DISPOSAL OF PROPERTIES/SITES - FOR APPROVAL
- 14 Apr 2026 · To ask the manager whether there are plans to remove the split cycle and pedestrian lane between…
- 14 Apr 2026 · To ask the Manager what reviews are taking place to assess the impact of continued development on…
- 10 Mar 2026 · To ask for an update on works being carried out at derelict Old Tanning Factory in Bohernabreena.
- 10 Feb 2026 · Could the three large trees close to (Address Provided in Moyville) have their branches trimmed…
- 10 Feb 2026 · New Works: Part 8 - Proposed Social and Affordable Mixed Tenure Housing Development on Council Land…
Public land
- South Dublin County Council · 0.1 ha · 259 m
- Dublin City Council · 0.74 ha · 279 m
- Dublin City Council · 3.17 ha · 344 m
- Dublin City Council · 0.35 ha · 354 m
- South Dublin County Council · 0.16 ha · 385 m
- Dublin City Council · 0.26 ha · 394 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 5 Nov 2026, 05:03
| Source | Licence | Fetched | Link |
|---|---|---|---|
| Public transport stops and routes (NTA GTFS) | CC BY 4.0 | 1 Nov 2026, 23:05 | open |
| Department of Education school list | CC BY 4.0 | 27 Oct 2026, 23:04 | open |
| National Planning Application Database | CC BY 4.0 | 5 Nov 2026, 05:03 | open |
| Council consultation portals | Public | 5 Nov 2026, 01:15 | open |
| Council meetings (ModernGov) | Public | 5 Nov 2026, 02:33 | open |
| Land Development Agency public land register | CC BY 4.0 | 11 Sept 2026, 16:43 | open |
| cso_saps_2022 | CC BY 4.0 | — | open |
| National Transport Authority | CC 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 maps | CC BY 4.0 | — | — |
| Fingal County Council | CC BY 4.0 | — | — |
What to ask, and who
- Application 70 m away open for comments until 18 Nov 2026: comment?CouncilAsk for: The plans on the council's website (€20 to comment).
- Building work started 45 m away: for how long?Agent · councilAsk for: The planning conditions for SD22A/0450.
- Any work done without planning permission?Seller · solicitorAsk for: An opinion of compliance for the whole house.
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.
- Knocklyon Avenue (bus 65B, F1) 464 m away: 10 an hour at morning peak; 50 from all stops within 500 m.
- Noise from road traffic mapped at 55–59 dB (day-evening-night average, EPA 2022).
- Here (2022 census): 98% owner-occupied (council 66%); 2% of homes empty (council 4%); most built 1971–1980; 58% drive to work (council 54%).
- 4 home extensions within 250 m since 2026. Most were dormers or attic conversions. On Knocklyon Woods: 18 in 10 years, 88% approved.
- The council decides in a median 55 days (about 8 weeks); 1 in 5 is asked for more information.
What the terms mean 7 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.
- 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 30
| Source | Publisher | Licence | Fetched |
|---|---|---|---|
| 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.com | An Coimisiún Pleanála | CC BY 4.0 | 30 Oct 2026 |
| data.nbco.gov.ie | National Building Control Office (BCMS) | CC BY 4.0 | 5 Nov 2026 |
| data.gov.ie | Various (see each layer) | CC BY 4.0, CC BY-NC-ND 4.0 | 27 Sept 2026 |
| services-eu1.arcgis.com | National Inventory of Architectural Heritage | CC BY 4.0 | 27 Sept 2026 |
| gis.epa.ie | Environmental Protection Agency | CC BY 4.0 | 27 Sept 2026 |
| dlrcoco.citizenspace.com | Local authorities (consultation portals) | Public | 5 Nov 2026 |
| www2.courts.ie | — | © the publisher | 4 Nov 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.com | Local authorities (derelict sites registers) | CC BY 4.0 | 2 Nov 2026 |
| services.arcgis.com | Dublin local authorities (housing delivery pipeline) | CC BY 4.0 | 2 Nov 2026 |
| esbnetworks.ie | — | © the publisher · flag only | 11 Sept 2026 |
| overpass-api.de | OpenStreetMap contributors, NHDS, Kildare County Council | ODbL 1.0, CC BY-SA 4.0, CC BY 4.0 | 27 Oct 2026 |
| transportforireland.ie | National Transport Authority | CC BY 4.0 | 1 Nov 2026 |
| lda.ie | Land Development Agency | CC BY 4.0 | 11 Sept 2026 |
| meetings.fingal.ie | Local authorities (council meetings) | Public | 5 Nov 2026 |
| services.arcgis.com | Department of Housing (National Planning Application Database) | CC BY 4.0 | 5 Nov 2026 |
| organisations | Planning Register (derived from applications and the CRO register) | Derived by Planning Register | 1 Nov 2026 |
| services-eu1.arcgis.com | Tailte Éireann | CC BY 4.0 | 11 Sept 2026 |
| services-eu1.arcgis.com | CSO, Tailte Éireann, OpenStreetMap contributors | CC BY 4.0 | 4 Oct 2026 |
| propertypriceregister.ie | Property Services Regulatory Authority (PPR) | © PSRA, PSI licence | 5 Nov 2026 |
| services.arcgis.com | Local authorities (RZLT maps) | CC BY 4.0 | 1 Nov 2026 |
| gov.ie | Department of Education | CC BY 4.0 | 27 Oct 2026 |
| gov.ie | Department of Housing | CC BY-SA 4.0 | 23 Oct 2026 |
| tusla.ie | Tusla (Early Years Inspectorate) | Public register | 4 Nov 2026 |
| services.arcgis.com | Local authorities via the Department of Housing (GZT / MyPlan) | CC BY 4.0 | 1 Nov 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 5 Nov 2026, 09:52 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.