17 Grosvenor Hill London

This site has had 2 applications since 2026.

• 26/05941/LBC Awaiting decision

  17 Grosvenor Hill London

  Alterations at the ground floor to the existing office building of 17 Grosvenor Hill to provide additional office accommodation; new pergola at roof terrace associated with the creation of a roof terrace at main roof level, with new lift and stair overrun; removal of existing plant at roof of property and provision of new plant; new fire escape stair to 19-23 Grosvenor Hill; internal changes, including alterations to the rear staircase link to 66 Grosvenor Street and creation of a new external doorway into an existing rear courtyard; and associated works.

  Submitted 1 Sep 2026 Heritage and listed buildings

1. 1 Sep 2026

   Received by Westminster

2. 7 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 27 October 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 65 days over the applications it decided in the last year.

• 26/05941/LBC Awaiting decision

  17 Grosvenor Hill London

  Alterations at the ground floor to the existing office building of 17 Grosvenor Hill to provide additional office accommodation; new pergola at roof terrace associated with the creation of a roof terrace at main roof level, with new lift and stair overrun; removal of existing plant at roof of property and provision of new plant; new fire escape stair to 19-23 Grosvenor Hill; internal changes, including alterations to the rear staircase link to 66 Grosvenor Street and creation of a new external doorway into an existing rear courtyard; and associated works.

  Submitted 1 Sep 2026 Heritage and listed buildings

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  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 repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  40 Grosvenor Place London SW1X 7HJ

  Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/06249/FULL Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  Received 1 Jun, published by the council 11 Sep 2026 Full applications