20 Upper Grosvenor Street London W1K 7PB

1. 29 Jul 2026

   Received by Westminster

2. 9 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 23 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 61 days over the applications it decided in the last year.

This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

This page mirrors an entry on the statutory planning register that Westminster is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• 20 Upper Grosvenor Street London W1K 7PB

  25/06740/FULL Submitted 19 Sep 2025 7m away

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

  Granted Full applications 21 docs

• 31 Culross Street London W1K 7HF

  26/00655/FULL Submitted 4 Feb 2026 32m 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 37m 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

• 16 Upper Grosvenor Street London W1K 7PL

  26/00037/LBC Submitted 6 Jan 2026 37m away

  Installation of two air condenser units at rear first floor. Internal works to replace existing fan coils and all wet radiators with new electric radiator.

  Granted Heritage and listed buildings 43 docs

• 16 Upper Grosvenor Street London W1K 7PL

  26/00036/FULL Submitted 6 Jan 2026 37m away

  Installation of two air condenser units at rear first floor.

  Granted Full applications 48 docs

• 95 Park Lane London W1K 7TE

  26/05337/FULL Submitted 6 Aug 2026 39m 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