29 Knox Street London W1H 1FS
Refused on 30 May 2024
Council decision: Application RefusedDelegated (officer decision)
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.
Proposal
Demolition of an existing single storey extension, and the erection of a single storey rear extension and a roof terrace with associated access. (Linked with 24/01732/LBC)
- Received
- 16 March 2024
- Decision level
- Delegated (officer decision)
- Public comments
- 7
- Council
- City of Westminster
- Ward
- Marylebone
- ReceivedReceived16 Mar
- ValidatedValidated21 Mar
- Consult.Consultation
- TargetTarget Date16 May
- DecidedDecided30 May
Decided in 70 days (council typically 49)
About this application
This is a full planning application for demolition at 29 Knox Street London W1H 1FS. Westminster has handled 4,484 applications of this type. This one was decided in 75 days, 4 weeks longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 20 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 168 applications across Marylebone. We hold 899 applications in total for the W1H 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
- W1H 1FS
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 21 March 2024
- Consultation expiry
- 15 April 2024
- Target decision date
- 16 May 2024
Applicant and agent
- Agent
- Edgington Spink & Hyne
- Architect profile
- EDGINGTON SPINK & HYNE LIMITED
- Agent address
- Meridian House 2 Russell Street Windsor SL4 1HQ United Kingdom
Planning decision
- Statutory period
- 56 days
Publicity
- Site notice start
- 25 March 2024
- Site notice end
- 15 April 2024
Appeal history
Additional information
- Planning Portal ID
- PP-12886961
- Documents
- 36
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Portman Estate
- 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 2026-11-03. 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.
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 30 Knox Street London W1H 1FS10/01791/ADLBC · ConditionsApproved0.0 mi
- 51 Upper Montagu Street London W1H 1FQ24/06878/LBC · HeritageApproved0.0 mi
- 33 Knox Street London W1H 1FZ04/07095/ADFULL · ConditionsRefused0.0 mi
- 53 Upper Montagu Street London W1H 1SE25/05778/ADLBC · ConditionsApproved0.0 mi
- 51 Upper Montagu Street London W1H 1FQ26/00814/ADLBC · ConditionsApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman0.9 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing1.2 mi
- Hillgrove Projects LtdVerifiedLondon4.1 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.3 mi
Planning something similar?
See what the council approved and refused for single-storey rear extensions on your street. Pick your home and get the evidence before you pay for drawings.