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82 Margaret Street London W1W 8LH

26/00146/NMAPermitted

Proposal

Amendments to planning permission dated 10th November 2025 (RN 25/02820/FULL) for 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as 29 units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level. NAMELY, to revise the description of development to; 'Alterations including opening of laundry building within the central courtyard at ground floor level; excavation to lower sections of the existing lower ground floor accommodation; erection of an infill extension at lower ground floor level with courtyard above; erection of dummy mansard to the rear of All Saints House to screen new plant; all in connection with the use of part lower ground, part ground and part ground upper floors as units for short to medium stay temporary visitor accommodation (sui generis); use of part lower ground, part ground and part first floor as an event space (Sui Generis); use of part ground floor as lounge/co-working space (Class E); and provision of plant ancillary to the building at basement level' and to add a condition to ensure that the development provides 29 units for short to medium stay temporary visitor accommodation (sui generis).

Received
12 January 2026
Decided
13 April 2026
Site boundary (council red line)
  1. Received12 Jan
  2. Validated
  3. Consult.
  4. Target
  5. Decided13 Apr

Decided in 91 days

This is a planning application for an extension at 82 Margaret Street London W1W 8LH. Westminster has handled 26,489 applications of this type and approves 88% of them, typically deciding them in 54 days. This one was decided in 91 days, 5 weeks longer than Westminster's median. The site is in the East Marylebone conservation area, with 9 listed buildings nearby. There have been 11 other applications at this address. We hold 241 applications in total for the W1W postcode area.

Application Details

Reference
26/00146/NMA
Address
82 Margaret Street London W1W 8LH
Postcode
W1W 8LH
Local Authority
Westminster
Decision Status
Permitted

Applicant & Agent

Planning Application Dates

Date Decided
13 April 2026
Date Submitted
12 January 2026

Planning Decision

Publicity

Appeal

Additional Information

Coordinates
51.516907, -0.138523
Enriching application data
2/3
Council recordsAppealsFlood risk

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

  1. 2026
    9 Oct

    Details of compliance with code of construction practice and detailed site investigations (phases 1-3)…

    PendingDischarge of conditions26/06838/ADFULL
  2. 2026
    22 Sep

    Amendments to planning permission dated 10th November 2025 (RN:25/02820/FULL

    PendingNon-material amendmentAmendment26/06501/NMA
  3. 2026
    8 Sep

    Details of refuse and recycling storage pursuant to conditions 30 of planning permission dated 10 November…

    RefusedApplicationRelated26/06124/ADFULL
  4. 2026
    28 Jul

    Detailed planting scheme and an associated biodiversity management plan; pursuant to Condition 24 of planning…

    ApprovedDischarge of conditions26/05054/ADFULL
  5. 2026
    15 Jul

    Amendments to planning permission dated 10th November (RN 25/02820/FULL

    RefusedNon-material amendmentAmendment26/04725/NMA
  6. 2026
    8 Jul

    Details of facing materials / new windows and rooflights, external doors, railings, detailed study of the…

    RefusedApplicationRelated26/02220/ADFULL
  7. 2026
    3 Jun

    Details of operational management plan and details to us evidencing the steps taken to advertise public…

    ApprovedApplicationRelated26/03630/ADFULL
  8. 2026
    9 Feb

    Variation of Conditions 27 and 33 of planning permission dated 10 November 2025 (RN: 25/02820/FULL

    PendingVariation of conditions (s73)26/00758/FULL
  9. 2026
    12 Jan

    Amendments to planning permission dated 10th November 2025 (RN 25/02820/FULL

    This applicationApprovedNon-material amendment26/00146/NMA
  10. 2025
    6 May

    Alterations including opening of laundry building within the central courtyard at ground floor level…

    ApprovedFull planning permissionPart of25/02820/FULL
  11. 2025
    6 May

    Alterations including opening of laundry building within the central courtyard at ground floor level…

    ApprovedListed building consentFiled alongside25/03052/LBC

Planning constraints

Designations that overlap or adjoin the site outline.

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.

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