25 Warrington Crescent London W9 1ED

This site has had 2 applications since 2026.

• 26/04046/FULL Decided

  25 Warrington Crescent London W9 1ED

  Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04047/LBC)

  Submitted 18 Jun 2026 Full applications

1. 18 Jun 2026

   Received by Westminster

2. 25 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. 28 Sep 2026

   Status changed to Decided

   Previously Pending.

• 26/04046/FULL Decided

  25 Warrington Crescent London W9 1ED

  Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04047/LBC)

  Submitted 18 Jun 2026 Full applications

1 later application on the register refers to this one:

• 26/04046/FULL Decided

  25 Warrington Crescent London W9 1ED

  Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04047/LBC)

  Submitted 18 Jun 2026 Full applications

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 25 Warrington Crescent London W9 1ED

  26/04046/FULL Submitted 18 Jun 2026 50 yards away

  88% historically approved · decision due ~20 Aug

  Internal and external alterations to the lower ground and ground floor maisonette, including internal reconfiguration, replacement windows and doors with conservation-style double glazing, and installation of air-source heat pumps with acoustic enclosure. (Linked to 26/04047/LBC)

  Decided Full applications Windows or glazing 59 docs

• Second Floor Flat 3 9 Warrington Crescent London W9 1ED

  26/03306/LBC Submitted 19 May 2026 50 yards away

  90% historically approved · decision due ~4 Aug

  Removal of marble surrounds to fireplaces.

  Awaiting decision Heritage and listed buildings 15 docs

• Second Floor Flat 3 9 Warrington Crescent London W9 1ED

  26/03334/LBC Submitted 20 May 2026 50 yards away

  90% historically approved · decision due ~29 Jul

  Internal layout alterationd and flooring works.

  Awaiting decision Heritage and listed buildings 10 docs

• Basement And Ground Floor 5 Formosa Street London W9 1EE

  25/04615/FULL Submitted 4 Jul 2025 50 yards away

  Use of basement for massage treatment and ground floor as nail bar (Class E).

  Granted Full applications 17 docs

• 10 Formosa Street London W9 1EE

  25/08675/ADFULL Submitted 27 Nov 2025 50 yards away

  Details of Joinery sections for new windows pursuant to condition 3 (part 1) of planning permission dated 17 May 2022 (RN: 22/01919/FULL)

  Granted Full applications Windows or glazing 6 docs

• 18 Formosa Street London W9 1EE

  26/05288/CLLB Submitted 5 Aug 2026 50 yards away

  89% historically approved · decision due ~30 Sep

  Internal electrical upgrade works at ground floor level.

  Decided

• 26/05473/LBC Decided

  9A Grosvenor Square London W1K 5AE

  Installation of natural Portland Stone paving to two front entrances. (Linked to 26/06273/FULL)

  Received 12 Aug, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/07421/LBC Awaiting decision

  1 Upper St Martin's Lane London WC2H 9NY

  Installation of non-illuminated vinyl lettering to the external face of the existing ground-floor shopfront windows for a temporary period. (Linked with 26/07083/ADV)

  Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
• 26/07416/LBC Awaiting decision

  39 Montagu Square London W1H 2LL

  Amalgamation of Flats 3 and 4 to form one single dwelling including associated internal reconfiguration and refurbishments, alterations to access arrangements and improvements to the existing terrace and private amenity spaces. Together with the removal and alteration of modern partitions, roof replacement, rebuilding of the roof terrace, new plant and addition of a new staircase, structural works, new window openings, and other associated works. (Linked with 26/07415/FULL)

  Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
• 26/07404/LBC Awaiting decision

  Basement Floor And Ground Floor Queen Annes House 34 Queen Anne's Gate London SW1H 9AB

  Refurbishment and enhancement of the building to facilitate its continued use as offices with ancillary residential accommodation, together with associated conservation, restoration, accessibility improvements, building services upgrades, landscaping and ancillary works. Internal and external alterations associated with the repair. (Linked with 26/07403/FULL)

  Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
• 26/07390/LBC Awaiting decision

  40 Wigmore Street London W1U 2RX

  Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vinyl signs applied to inside face of the glazed shopfront each measuring 0.22m x 0.84m. (Linked with 26/06970/ADV)

  29 Oct 2026 Heritage and listed buildings