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Planning application

20 Upper Grosvenor Street London W1K 7PB

Granted Westminster 25/06740/FULL Full Planning Permission Application

Relates to 25/06937/FULL

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Use of the third and fourth floor as offices (Class E). (LAND USE SWAP WITH 21 LEES PLACE (REF: 25/06937/FULL)

As published by the council, reference 25/06740/FULL

Application record

Reference
25/06740/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
19 Sep 2025
Validated
24 Sep 2025
Decided
7 Apr 2026
Ward
West End
Decision by
Delegated Decision
Postcode
W1K 7PB

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2018: 2 approved, 0 refused.

  • 26/05091/AD7 Decided

    20 Upper Grosvenor Street London W1K 7PB

    Display for a temporary period of six months of a non-illuminated estate agent board located on the ground floor railings measuring 0.9m x 0.6m.

    Submitted 29 Jul 2026
  • 18/03108/AD7 Granted

    20 Upper Grosvenor Street London W1K 7PB

    Display for a temporary period of six months of a non-illuminated estate agent board located on the ground floor railings measuring 0.9m x 0.6m.

    Decided 26 Apr 2018 Advertising

Timeline

Dates from the published record

  1. 19 Sep 2025

    Received by Westminster

  2. 24 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 7 Apr 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 25/06937/FULL Granted

    21 Lees Place London W1K 6LR

    Partial demolition; basement excavation; replacement ground floor frontage; creation of a rear lightwell; installation of a new window on the west elevation; and associated external works in connection with residential use of part of the ground floor and new basement floor as a three bedroom residential unit (Class C3). (Land use swap with 20 Upper Grosvenor Street (REF: 25/06740/FULL))

    Decided 7 Apr 2026 Full applications

2 later applications on the register refer to this one:

  • 25/06937/FULL Granted

    21 Lees Place London W1K 6LR

    Partial demolition; basement excavation; replacement ground floor frontage; creation of a rear lightwell; installation of a new window on the west elevation; and associated external works in connection with residential use of part of the ground floor and new basement floor as a three bedroom residential unit (Class C3). (Land use swap with 20 Upper Grosvenor Street (REF: 25/06740/FULL))

    Decided 7 Apr 2026 Full applications
  • 25/06741/FULL Withdrawn

    21 Lees Place London W1K 6LR

    Partial demolition and excavation of a new lower ground floor level; installation of a replacement ground floor frontage; creation of a rear lightwell; and associated external works in connection with the use of part of the ground floor and new basement floor as residential floorspace (Class C3) comprising 1x3 bedroom unit. (LAND USE SWAP WITH 20 UPPER GROSVENOR STREET (REF: 25/06740/FULL)

    Decided 23 Sep 2025 Full applications

Who's behind it

Company information only, from the register and Companies House

Newmark LLP Agent

921 applications on PlanIndex · across 40 councils · 97% granted

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Documents

Plans, drawings, consultee responses and the officer's report

21 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Westminster granted permission on 7 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 20 Upper Grosvenor Street London W1K 7PB

    18/03108/AD7 Submitted 17 Apr 2018 50 yards away

    Display for a temporary period of six months of a non-illuminated estate agent board located on the ground floor railings measuring 0.9m x 0.6m.

    Granted Advertising 8 docs

  • 20 Upper Grosvenor Street London W1K 7PB

    26/05091/AD7 Submitted 29 Jul 2026 50 yards away

    89% historically approved · decision due ~23 Sep

    Display for a temporary period of six months of a non-illuminated estate agent board located on the ground floor railings measuring 0.9m x 0.6m.

    Decided

  • 31 Culross Street London W1K 7HF

    26/00655/FULL Submitted 4 Feb 2026 50 yards away

    Alterations to the front elevation at ground floor level, replacement of rear ground floor level extension with new access doors at rear ground floor level and replacement of the flat roof.

    Granted Full applications Extension 21 docs

  • 31 Culross Street London W1K 7HF

    26/03953/ADFULL Submitted 16 Jun 2026 50 yards away

    89% historically approved · decision due ~11 Aug

    Detailed drawings (1:20) of new doors pursuant to condition 3 of planning permission dated 10th April 2026 (RN: 26/00655/FULL).

    Decided

  • 95 Park Lane London W1K 7TE

    26/05337/FULL Submitted 6 Aug 2026 50 yards away

    87% historically approved · decision due ~13 Oct

    Variation of Condition 1 of planning permission dated 17 July 2025 (RN: 25/02688/FULL) for, 'Repair and replacement of windows on the front and rear elevations, installation of plant at main roof level, replacement of roof coverings and lift and internal alterations at all floor levels'. NAMELY, to allow the installation of 6no. outdoor smaller units clustered on the east side of the roof in two groups rather than arranged against the party wall. (Application under Section 73). (Linked with 26/05338/LBC)

    Awaiting decision Full applications Windows or glazing

  • 95 Park Lane London W1K 7TE

    26/05338/LBC Submitted 6 Aug 2026 50 yards away

    90% historically approved · decision due ~13 Oct

    Installation of 6no. outdoor ASHP and AC units (Linked with 26/05337/FULL)

    Awaiting decision Heritage and listed buildings

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications