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49A Chiltern Street London W1U 6LZ

07/10707/CLEUDCertificate of Lawfulness (existing)Refused
Lawful development certificate

Refused on 4 March 2008

Council decision: Application RefusedDelegated (officer decision)

Approximate location: the centre of the postcode, not the exact property.

Proposal

Use of fourth floor as six self-contained short term let properties.

Received
7 December 2007
Decision level
Delegated (officer decision)
Ward
Marylebone High Street
  1. Received7 Dec
  2. Validated9 Jan
  3. Consult.
  4. Target5 Mar
  5. Decided4 Mar

Decided in 55 days (council typically 49)

About this application

This is an application to amend a permission at 49A Chiltern Street London W1U 6LZ. Westminster has handled 604 applications of this type. This one was decided in 88 days, 6 weeks longer than Westminster's typical decision time. The site is in the Portman Estate conservation area, with 3 listed buildings nearby. There have been 2 other applications at this address. We hold 1,070 applications in total for the W1U postcode area.

88% of amendment 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
W1U 6LZ
Application type
Certificate of Lawfulness (existing)
Scale / size
Small

Planning application dates

Date validated
9 January 2008
Target decision date
5 March 2008
Committee meeting
4 March 2008

Applicant and agent

Agent address
Lowfield House Brocket Road Hoddesdon Herts EN11 8PB

Planning decision

Statutory period
56 days

Additional information

Comments
0
Documents
8

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Conservation area: Portman Estate
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
  • 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.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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