21 Conduit Mews London W2 3RE
Refused on 17 February 2026
Proposal
Erection of a dormer to the rear elevation.
- Received
- 22 September 2025
- Council
- City of Westminster
- Ward
- Lancaster Gate
- Agent
- sjd Architects Ltd
- ReceivedReceived22 Sep
- ValidatedValidated30 Sep
- Consult.Consultation
- TargetTarget Date25 Nov
- DecidedDecided17 Feb
Decided in 140 days (council typically 49)
About this application
This is a full planning application for a dormer extension at 21 Conduit Mews London W2 3RE. Westminster has handled 4,484 applications of this type. This one was decided in 148 days, 14 weeks longer than Westminster's typical decision time. The site is in the Bayswater conservation area, with 10 listed buildings nearby. There has been 1 other application at this address. In the past year there have been 67 applications across Lancaster Gate. We hold 3,422 applications in total for the W2 postcode area.
86% of full applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- W2 3RE
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 30 September 2025
- Consultation expiry
- 5 November 2025
- Target decision date
- 25 November 2025
Applicant and agent
- Agent
- sjd Architects Ltd
- Architect profile
- SJD ARCHITECTS LIMITED
- Agent address
- Tanners Bank Design Studio Aislaby Road Eaglescliffe Stockton on Tees TS16 0JJ
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 15 October 2025
- Advertisement expiry
- 5 November 2025
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Bayswater
- Listed building: 19B Craven Road London W2 3BPOn or next to this site
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)
flood storage areas, listed buildings, tree preservation orders, 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 2026-11-03. 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.
Planning history at this site
1 other application at this property, newest first.
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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