Existing Residential (RZLT FL0000001377)

Castleknock · FingalNew

70StrongOn the RZLT map (3% land tax)· Residential Zoned Land Tax

On the 2027 RZLT map with no live permission for 10+ homes on it

2 more reasons

Built far below what the zoning allows: About 1,582 m² of buildings on 0.39 ha (plot ratio 0.41, 2 storeys max) · source, 26 Sept 2026
0.39 ha zoned R2 (RS - Residential: Provide for residential development and protect and improve re) · source, 5 Apr 2023

On the RZLT map, no permissionUnderused site

Area: 0.39 ha
Zoning: R2
Homes: 10–30 homes (indicative density 35 100dph)
ACP 501378: Grant permission with revised conditions: 16 Oct 2026

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Who to contact: Land Registry folio (€5 search) · No organisation on record for this land. The registered owner is on the Land Registry folio: search landdirect.ie by map (a small fee applies).

What could be built

10–30 homes (indicative density 35 100dph)

Loading capacity…

What it might be worth

Indicative, not a valuation

Planning history

Planning on and around the site

Radius m: 250

Near

Years: 5
Total: 31

Appeals

Total: 3
Tagged: 1

Inspector recommendations are shown only where the inspector's report has been read and tagged; "not extracted" is not the same as "no recommendation". Sources: npad, 25 Sept 2026; acp, 25 Sept 2026; bcms, 25 Sept 2026

Deadlines running

Radius m: 250
Count: 1

Clocks (1)

Kind	Entity type	Occurred at	Deadline at	Deadline kind	Summary
appeal_decided	appeal	21 Aug 2026	16 Oct 2026	jr	ACP 501378: Grant permission with revised conditions

Deadlines are computed once, by the connector that saw the event, from the statutory rule; never estimated here. Sources: acp, 25 Sept 2026; consult, 25 Sept 2026; moderngov, 25 Sept 2026; npad, 25 Sept 2026; rzlt, 25 Sept 2026

Similar schemes nearby

Base rate from past decisions nearby, not a prediction for this site

Radius m: 2,000
Years: 5
Min units: 10
Homes granted: 0

Base rates (2)

Label	N	Of	Text
Applications for 10+ homes granted	0	0	0 of 0 decided applications for 10+ homes within 2 km in 5 years were granted
Appealed schemes granted by the Commission	0	0	0 of 0 of those schemes that were appealed ended with a grant

Base rate from past decisions nearby, not a prediction for this site. Small N means a wide range: treat anything under 10 decisions as anecdote. Sources: acp, 25 Sept 2026; npad, 25 Sept 2026

What's happening nearby

100 recent events

Recent activity within 250 m

Judicial review window closes (s.50, 8 weeks) ends 16 Oct 2026 20 days
501378: Construction of extension
source

13 Oct 2026 Commencement notice · 210 m
Work commenced at 4 Riverwood Drive, Dublin, D15 H0C1 under FW26A/0227E
source
24 Sept 2026 On the Residential Zoned Land Tax map
On the 2027 draft RZLT map
source
24 Sept 2026 RZLT-liable with no live permission for 10+ homes
RZLT-liable and no live permission for 10+ homes on it
source
24 Sept 2026 Built far below what the zoning allows
About 1,582 m² of buildings on 0.39 ha (plot ratio 0.41, 2 storeys max)
source
27 Aug 2026 Decision · 38 m
FW26A/0017E: GRANT TIME EXT (3 months) AI — The Electricity Supply Board (ESB) intends to apply for permission for
source
26 Aug 2026 Appeal received by the Commission · 223 m
ACP 501972: Attic Conversion and all other associate site works.
source
21 Aug 2026 Appeal decided · 158 m

Zoning, services and constraints

Zoning and the RZLT map

Rzlt

Available: Yes
On site: Yes
Note: This land is on an RZLT map — the owner is liable for an annual 3 % tax.

Zones (5)

Objective text	Plan id	Fetched at	Code	Label	Meaning
RD - Road: N/A	FINGAL_DP_OWN	11 Sept 2026	—	—	—
RS - Residential: Ensure that any new development in existing areas would have a minimal impact on and enhance existing residential amenity.	FINGAL_DP_OWN	11 Sept 2026	—	—	—
OS - Open Space: Provide recreational and amenity resources for urban and rural populations subject to strict development controls. Only community facilities…	FINGAL_DP_OWN	11 Sept 2026	—	—	—
OS - Open Space: Preserve and provide for open space and recreational amenities	Fl-001:DP:the-fingal-development-plan-2023-2029	11 Sept 2026	G4	Open space	Open space and recreational amenity, to be preserved as such.
RS - Residential: Provide for residential development and protect and improve residential amenity	Fl-001:DP:the-fingal-development-plan-2023-2029	11 Sept 2026	R2	Existing residential	An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour'…

Objective text is quoted from the development plan as published on MyPlan (GZT). The plain-English line is our gloss. Sources: , 26 Sept 2026

More detail

On the market

Radius m: 1,000
Years: 3

All sales

Count: 186
Median price: 470,000
First sale: 2024-01-23
Last sale: 2026-08-06

New build

Count: 4
Median price: 502,203
Min price: 488,987
Max price: 506,608

Sales are from the Property Price Register (new dwellings, VAT-exclusive where flagged). Positions are geocoded from addresses, not surveyed. Source: ppr, 25 Sept 2026

Sources

Site record (rzlt_parcel) · as of 26 Sept 2026
On the Residential Zoned Land Tax map · as of 1 Jan 2027
RZLT-liable with no live permission for 10+ homes · as of 1 Jan 2027
Built well below what the zoning allows · as of 26 Sept 2026
Zoning · as of 5 Apr 2023
npad · as of 25 Sept 2026
acp · as of 25 Sept 2026
lda_lands · as of 11 Sept 2026
consult · as of 25 Sept 2026
moderngov · as of 25 Sept 2026
rzlt · as of 25 Sept 2026
Planning applications: as of 22 Sept 2026 — National planning feed (NPAD); descriptions are truncated at source and applicants are organisations only, where a council register publishes them.
Appeals: as of 18 Sept 2026
Permitted, not started: as of 26 Sept 2026 — Grants of 10+ homes since 2017; 'not started' means no matched commencement notice.
RZLT map: as of 11 Sept 2026 — Latest annual RZLT edition per council; parcels under 0.1 ha are left out.

Loading planning history, what’s nearby and constraints…

More in Fingal: development land · derelict sites · council land for sale · RZLT map

Kind

Entity type

Occurred at

Deadline at

Deadline kind

Summary

appeal_decided

appeal

21 Aug 2026

16 Oct 2026

ACP 501378: Grant permission with revised conditions

Label

Text

Applications for 10+ homes granted

0 of 0 decided applications for 10+ homes within 2 km in 5 years were granted

Appealed schemes granted by the Commission

0 of 0 of those schemes that were appealed ended with a grant

Objective text

Plan id

Fetched at

Code

Label

Meaning

RD - Road: N/A

FINGAL_DP_OWN

11 Sept 2026

—

RS - Residential: Ensure that any new development in existing areas would have a minimal impact on and enhance existing residential amenity.

FINGAL_DP_OWN

11 Sept 2026

—

OS - Open Space: Provide recreational and amenity resources for urban and rural populations subject to strict development controls. Only community facilities…

FINGAL_DP_OWN

11 Sept 2026

—

OS - Open Space: Preserve and provide for open space and recreational amenities

Fl-001:DP:the-fingal-development-plan-2023-2029

11 Sept 2026

Open space

Open space and recreational amenity, to be preserved as such.

RS - Residential: Provide for residential development and protect and improve residential amenity

Fl-001:DP:the-fingal-development-plan-2023-2029

11 Sept 2026

Existing residential

An established residential area. The objective is to protect existing residential amenity as well as to provide housing — which is the objective a neighbour'…

Source	Council	Ref	Name	Address	Units
application	FINGAL	LRD0052/S3E	Porterstown	Townland of Porterstown, Clonsilla,, Dublin 15	302
application	FINGAL	LRD0056/S3E	Winterwood	Winterwood, Carpenterstown Road, Dublin 15, D15YH4C	175
application	FINGAL	FW25A/0416E	Porterstown Road	Site at Porterstown Road, Porterstown, Dublin 15, D15 Y95T	87
application	FINGAL	SHDW/004/21	Kellystown	In the townlands of Kellystown, Porterstown and Diswellstown, Clonsill	349
shd	FINGAL	ABP-312318	Kellystown	In the townlands of Kellystown, Porterstown and Diswellstown, Clonsilla, Dublin 15. (www.kellystownshd2.com)	349
shd	FINGAL	ABP-306074	Windmill	Windmill, Porterstown, Clonsilla, Dublin 15. (www.windmillshd.ie)	211
application	FINGAL	FW17A/0125	Site (c.0.6 hectares), Porterstown	Site (c.0.6 hectares), Porterstown, Dublin 15	24

Name	Sites	Homes
Castlethorn Developments Luttrellstown Limited	1	302
Developments Limited	1	175
J &C Porterstown Road Development Company Limited	1	87

Council	Committee	Meeting at	Item no	Title	Kind
FINGAL	Blanchardstown-Mulhuddart/Castleknock/Ongar Area Committee (Services B - Strategic & General Matters)	3 Sept 2026	32a	Proposed lease of land at Kellystown, Dublin 15 to St Mochta's Football Club, Porterstown Road, Dublin 15	s183_disposal
FINGAL	County Council	7 Jul 2025	F/312/25	Proposed Disposal of land at Porterstown Road, Porterstown, Dublin 15 to Castlethorn Developments Luttrellstown Limited	s183_disposal

Agency	Stop id	Name	Distance m
nta	8240IR0040	Coolmine	224.2
nta	8240DB004825	Bramley Walk	305.7
nta	8240DB001680	Bramley Walk	382.1
nta	8240DB007233	Bramley Park	513.5
nta	8240DB004520	Sycamore Drive	535.1
nta	8240DB007031	Diswellstown Road	537.8
nta	8240DB004895	Fernleigh Close	548.8

Name	Note
Uisce Éireann wastewater treatment capacity register	Wastewater and water supply headroom per plant; check the plant serving this site.
Uisce Éireann pre-connection enquiry	The formal answer on whether a connection is feasible.
ESB Networks capacity heatmaps	Available demand capacity at the nearest substations.

Kind	Ref	Name	Council	Distance m
school_postprimary	76062B	Castleknock Community College	FINGAL	555.6
school_primary	18778S	S N NAOMH MOCHTA	FINGAL	934.6
school_primary	20130B	ST PATRICKS NS	FINGAL	937.4
school_primary	20241K	Scoil Choilm Community NS	FINGAL	956.9
school_postprimary	76130P	Luttrellstown Community College	FINGAL	979

Existing Residential (RZLT FL0000001377)

What could be built

What it might be worth

Planning history

Planning on and around the site

Near

Appeals

Deadlines running

Clocks (1)

Similar schemes nearby

Base rates (2)

What's happening nearby

Recent activity within 250 m

Zoning, services and constraints

Zoning and the RZLT map

Rzlt

Zones (5)

More detail

On the market

All sales

New build

Sources

Planning history

Planning on and around the site

Near

Appeals

Deadlines running

Clocks (1)

Similar schemes nearby

Base rates (2)

What's happening nearby

Recent activity within 250 m

Zoning, services and constraints

Zoning and the RZLT map

Rzlt

Zones (5)

More detail

On the market

All sales

New build

Sources

Homes planned nearby

Totals

As of

Sites (7)

Applicants (3)

Public land nearby

Council items (2)

Transport and schools

Stops (10)

Constraints

Kinds (1)

Water and drainage

Masked

Links (3)

Schools (5)