Flat 2 13 Montagu Street London W1H 7EX

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/04426/LBC Granted

  Flat 2 13 Montagu Street London W1H 7EX

  Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)

  Decided 20 Feb 2026 Heritage and listed buildings

1. 27 Jun 2025

   Received by Westminster

2. 3 Jul 2025

   Validated

   Checked as complete and ready for consideration.

3. 20 Feb 2026

   Decision issued: Application Permitted

4. 30 Aug 2026

   Added to PlanIndex

• 25/04426/LBC Granted

  Flat 2 13 Montagu Street London W1H 7EX

  Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)

  Decided 20 Feb 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 25/04426/LBC Granted

  Flat 2 13 Montagu Street London W1H 7EX

  Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)

  Decided 20 Feb 2026 Heritage and listed buildings

Westminster granted permission on 20 February 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.

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 2 13 Montagu Street London W1H 7EX

  25/04426/LBC Submitted 27 Jun 2025 50 yards away

  Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04425/FULL)

  Granted Heritage and listed buildings Windows or glazing 29 docs

• 15 - 16 Montagu Mews South London W1H 7ET

  26/03608/ADFULL Submitted 2 Jun 2026 50 yards away

  88% historically approved · decision due ~28 Jul

  Details of all new windows, omission of the rooflight to the front roof slope conservation rooflight and main door pursuant to conditions 4, 5 and 6 of planning permission dated 7th May 2026 (RN:26/00330).

  Awaiting decision Full applications Loft or dormer Windows or glazing 8 docs

• 19 Montagu Street London W1H 7EX

  26/07053/TCA Submitted 15 Oct 2026 50 yards away

  100% historically approved · decision due ~10 Dec

  (T1) - Cherry(Prunus) -reduce crown by 25%(2.5m max) to suitable growth points -prune lateral branches to match, shape and tidy -crown lift removing 3x lowest branches back to main trunk collar All works are for routine maintenance.

  Awaiting decision Trees

• 26 Montagu Mews South London W1H 7ES

  25/05187/FULL Submitted 25 Jul 2025 50 yards away

  Replacement of garage doors with timber windows.

  Granted Full applications Windows or glazing 14 docs

• 11 Montagu Mews South London W1H 7ER

  26/03408/FULL Submitted 22 May 2026 50 yards away

  88% historically approved · decision due ~17 Jul

  Installation of replacement existing windows with double glazed units to improve the thermal performance of the property.

  Awaiting decision Full applications Windows or glazing 8 docs

• Flat 12 61 George Street London W1H 7HW

  05/05599/CLEUD Submitted 13 Jul 2005 50 yards away

  Use as temporary sleeping accommodation.

  Refused Lawful development 61 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 26/07193/FULL Awaiting decision

  98 Victoria Street London SW1E 5JL

  Shopfront alterations. (Linked with 26/07194/ADV)

  Received 21 Oct, published by the council 22 Oct 2026 Full applications
• 26/07187/FULL Awaiting decision

  Ground Floor Flat 151 Portnall Road London W9 3BN

  Erection of a single storey rear extension.

  Received 21 Oct, published by the council 22 Oct 2026 Full applications