24 And 26 Huntsworth Mews London NW1 6DD
Proposal
Erection of a mansard roof extension with dormer windows at second floor level and alterations to the front windows and doors (Site includes 24-26 Huntsworth Mews).
- Received
- 20 March 2018
- Decided
- 17 May 2018 · Application Permitted
- Decision level
- Delegated (officer decision)
- Public comments
- 1
- Council
- City of Westminster
- Ward
- Bryanston And Dorset Square
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
- ReceivedSubmitted20 Mar
- ValidatedValidated14 May
- Consult.Consultation
- TargetTarget Date9 Jul
- DecidedDecided17 May
Decided in 3 days (council typically 49)
This is a full planning application for a dormer extension at 24 And 26 Huntsworth Mews London NW1 6DD. Westminster has handled 4,496 applications of this type and approves 85% of them, typically deciding them in 74 days. This one was decided in 58 days, 2 weeks quicker than Westminster's median. The site is in the Dorset Square conservation area, with 20 listed buildings nearby. There have been 2 other applications at this address. We hold 3,114 applications in total for the NW1 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 201822 Mar
Conversion of garages into habitable space, erection of a mansard and external alterations to No 24 and 26…
ApprovedApplication for full Planning PermissionFiled alongside18/02346/FULL - 201820 Mar
Erection of a mansard roof extension with dormer windows at second floor level and alterations to the front…
This applicationApprovedFull18/02263/FULL
Planning history at this site
1 other application at this property, newest first.
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Dorset Square
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)
flood storage areas, 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 2026-10-09. 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.
Consultants on this application
- Plainview Planning · Agent for this application
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