Flat 9 121 Gloucester Terrace London W2 3HB

This site has had 2 applications since 2026.

• 26/04228/LBC Awaiting decision

  Flat 9 121 Gloucester Terrace London W2 3HB

  Installation of slimline double-glazed windows to the front and rear; internal refurbishments. [Linked to 26/04227/FULL]

  Submitted 26 Jun 2026 Heritage and listed buildings

1. 26 Jun 2026

   Received by Westminster

2. 2 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 27 August 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 66 days over the applications it decided in the last year.

• 26/04228/LBC Awaiting decision

  Flat 9 121 Gloucester Terrace London W2 3HB

  Installation of slimline double-glazed windows to the front and rear; internal refurbishments. [Linked to 26/04227/FULL]

  Submitted 26 Jun 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/04228/LBC Awaiting decision

  Flat 9 121 Gloucester Terrace London W2 3HB

  Installation of slimline double-glazed windows to the front and rear; internal refurbishments. [Linked to 26/04227/FULL]

  Submitted 26 Jun 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.

• Flat 9 121 Gloucester Terrace London W2 3HB

  26/04228/LBC Submitted 26 Jun 2026 50 yards away

  90% historically approved · decision due ~27 Aug

  Installation of slimline double-glazed windows to the front and rear; internal refurbishments. [Linked to 26/04227/FULL]

  Awaiting decision Heritage and listed buildings Windows or glazing 17 docs

• 20 Devonshire Terrace London W2 3DW

  26/00925/LBC Submitted 13 Feb 2026 50 yards away

  90% historically approved · decision due ~30 Sep

  Replacement mechanical equipment to front vault an boiler flue upgrade; replacement front door; and associated works. (Linked to 26/00924/FULL)

  Awaiting decision Heritage and listed buildings

• 20 Devonshire Terrace London W2 3DW

  26/00924/FULL Submitted 13 Feb 2026 50 yards away

  87% historically approved · decision due ~30 Sep

  Replacement mechanical equipment to front vault an boiler flue upgrade; replacement front door; and associated works. (Linked to 26/00925/LBC)

  Awaiting decision Full applications

• 15A Devonshire Terrace London W2 3DW

  26/03576/FULL Submitted 1 Jun 2026 50 yards away

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

  Decided Full applications Extension

• Flat 1 17 Devonshire Terrace London W2 3DW

  25/05958/CLLB Submitted 15 Aug 2025 50 yards away

  Internal cleaning and repairs to address water damage to affected walls and floors including removal and replacement of skirting boards and architrave; replacement of internal floor coverings with timber plank floor covering and ceramic floor tiles; works to internal solid walls to remove and replace ceramic wall tiles from en-suite bathroom; and redecorate walls, ceilings, joinery and pipework.

  Granted 11 docs

• 24 Chilworth Street London W2 6DT

  25/06746/ADFULL Submitted 19 Sep 2025 50 yards away

  87% historically approved · decision due ~14 Nov

  Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 5 of planning permission dated 26th June 2025 (RN: 25/01847/FULL).

  Awaiting decision Full applications 7 docs

• 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