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Planning application

Ground Floor And First Floor 11 Devonshire Place London W1G 6HT

Granted Westminster 23/03449/FULL Full Planning Permission Application

Works: Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Installation of air conditioning units to the rear courtyard; renewal of M&E services and internal AC units, fire protection measures to doors, floors and walls; replacement of existing modern doors with fire resistant doors; removal of non-original partitioning, new bathrooms, shower room and kitchen including lowered ceilings; draft proofing to existing windows and installation of secondary glazing; and enclosing the existing lift within glazed cladding. (Linked with 23/03450/LBC)

As published by the council, reference 23/03449/FULL

Application record

Reference
23/03449/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
23 May 2023
Validated
30 May 2023
Decided
17 Jul 2023
Ward
Marylebone
Decision by
Delegated Decision
Postcode
W1G 6HT

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2023: 2 approved, 0 refused.

  • 23/03450/LBC Granted

    Ground Floor And First Floor 11 Devonshire Place London W1G 6HT

    Installation of air conditioning units to the rear courtyard; renewal of M&E services and internal AC units, fire protection measures to doors, floors and walls; replacement of existing modern doors with fire resistant doors; removal of non-original partitioning, new bathrooms, shower room and kitchen including lowered ceilings; draft proofing to existing windows and installation of secondary glazing; and enclosing the existing lift within glazed cladding. (Linked with 23/03449/FULL)

    Decided 17 Jul 2023 Heritage and listed buildings

Timeline

Dates from the published record

  1. 23 May 2023

    Received by Westminster

  2. 30 May 2023

    Validated

    Checked as complete and ready for consideration.

  3. 17 Jul 2023

    Decision issued: Application Permitted

  4. 10 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 23/03450/LBC Granted

    Ground Floor And First Floor 11 Devonshire Place London W1G 6HT

    Installation of air conditioning units to the rear courtyard; renewal of M&E services and internal AC units, fire protection measures to doors, floors and walls; replacement of existing modern doors with fire resistant doors; removal of non-original partitioning, new bathrooms, shower room and kitchen including lowered ceilings; draft proofing to existing windows and installation of secondary glazing; and enclosing the existing lift within glazed cladding. (Linked with 23/03449/FULL)

    Decided 17 Jul 2023 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Howard de Walden Estate ltd Agent

27 applications on PlanIndex · 95% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

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Documents

Plans, drawings, consultee responses and the officer's report

24 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Westminster granted permission on 17 July 2023, 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.

About full applications

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.

Nearby applications

Within 0.3 miles

  • Ground Floor And First Floor 11 Devonshire Place London W1G 6HT

    23/03450/LBC Submitted 23 May 2023 50 yards away

    Installation of air conditioning units to the rear courtyard; renewal of M&E services and internal AC units, fire protection measures to doors, floors and walls; replacement of existing modern doors with fire resistant doors; removal of non-original partitioning, new bathrooms, shower room and kitchen including lowered ceilings; draft proofing to existing windows and installation of secondary glazing; and enclosing the existing lift within glazed cladding. (Linked with 23/03449/FULL)

    Granted Heritage and listed buildings Windows or glazing 21 docs
  • Second Floor Flat 11 Devonshire Place London W1G 6HT

    23/00311/ADLBC Submitted 18 Jan 2023 50 yards away

    Details of secondary glazing, skirtings, cornices, architraves and amended reflected ceiling plans showing areas of ceiling to be replaced/repaired pursuant to conditions 4 and 6 of listed building consent dated 20 December 2022 (RN: 22/07393/LBC)

    Granted Conditions Windows or glazing 12 docs
  • 11 Devonshire Place London W1G 6HT

    10/07951/LBC Submitted 16 Sep 2010 50 yards away

    Internal alterations at first floor level.

    Granted Heritage and listed buildings 9 docs
  • 14 Devonshire Mews West London W1G 6QE

    26/01055/FULL Submitted 18 Feb 2026 50 yards away

    88% historically approved · decision due ~15 Apr

    The replacement of an existing full-width, half-depth rear kitchen/diner extension and the replacement of metal roller shutter garage door to the front with a timber garage door.

    Awaiting decision Full applications Extension 25 docs
  • 7 Devonshire Place London W1G 6HW

    22/01785/FULL Submitted 16 Mar 2022 50 yards away

    Installation of 4 Air Source Heat Pumps at roof level.

    Granted Full applications 31 docs
  • 15 Devonshire Place London W1G 6HF

    18/08988/ADFULL Submitted 22 Oct 2018 50 yards away

    Details of scheme for the storage and disposal of refuse and recycling pursuant to condition 4 of planning permission dated 28th September 2018 (RN:17/09042)

    Granted Full applications 14 docs

In Westminster

  • 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