15, Keystone Crescent, Islington, London, N1 9DS
Proposal
Listed Building Consent in connection with conversion of single family dwelling into one x studio flat to lower ground floor and one x 1 bed maisonette including erection of two storey rear extension, dormer windows and internal alterations.
- Received
- 3 September 2004
- Decided
- 16 November 2004 · Approve with conditions
- Decision level
- Planning committee
- Council
- London Borough of Islington
- Ward
- Caledonian
- ReceivedSubmitted3 Sep
- ValidatedValidated3 Sep
- Consult.Consultation17 Sep
- TargetTarget Date
- DecidedDecided16 Nov
Decided in 74 days (council typically 56)
This is a heritage application for a two storey rear extension at 15, Keystone Crescent, Islington, London, N1 9DS. Islington has handled 702 applications of this type and approves 88% of them, typically deciding them in 68 days. This one was decided in 74 days, 6 days longer than Islington's median. The site is in a conservation area, with 8 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 61 applications across Caledonian. We hold 3,956 applications in total for the N1 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Islington
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 20043 Sep
Conversion of single family dwelling house into 1 x studio flat to lower ground floor and one x 1-bed…
ApprovedFull Planning ApplicationFiled alongsideP042239 - 20043 Sep
Listed Building Consent in connection with conversion of single family dwelling into one x studio flat to…
This applicationApprovedListed building consentP042240
Planning constraints
Designations at the address point. Ones next to the site may also apply.
- Conservation area: Keystone Crescent
- Listed building: Grade II: Numbers 18 to 24 (Consecutive) and Attached RailingsOn or next to this site
- Flood zone 1: Low probability (rivers and sea)
Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.
Also checked, none recorded (20)
flood storage areas, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
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