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Planning application

36 Devonshire Place Mews London W1G 6DD

Granted Westminster 25/08620/ADFULL Approval of Details (Full PP)

Works: Windows or glazing

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

Proposal

Details and programme of energy efficiency measures, details of sound insulation scheme, detailed schedule and annotated elevation and roof plans, of all proposed materials of external construction, including glazing and detailed drawings of windows and doors (including their method of openability) with elevations, plans and sections pursuant to condition 6, 7, 8, and 9 of the appeal decision dated 27th February 2025 (Appeal Ref: APP/X5990/W/24/3351064)

As published by the council, reference 25/08620/ADFULL

Application record

Reference
25/08620/ADFULL
Type
Approval of Details (Full PP)
Status
Decided
Decision
Granted As published: Application Permitted
Received
25 Nov 2025
Validated
25 Nov 2025
Decided
18 Feb 2026
Ward
Marylebone
Decision by
Delegated Decision
Postcode
W1G 6DD

Site history

Applications at this address on the Westminster register

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

  • 25/06761/NMA Granted

    36 Devonshire Place Mews London W1G 6DD

    Amendments to planning permission granted on appeal dated 27 February 2025 (RN:23/08700/FULL and APP/X5990/W/24/3351064) for Demolition of existing building and erection of replacement dwellinghouse (Class C3) over ground, first and second floor levels with rear balcony at first floor level; NAMELY, to increase external wall thickness, amend the wording of Condition 6, to make minor amendments to windows and the rear dormer, internal alterations and removal of one drainpipe.

    Decided 23 Oct 2025 Amendments

Timeline

Dates from the published record

  1. 25 Nov 2025

    Received by Westminster

  2. 18 Feb 2026

    Decision issued: Application Permitted

  3. 1 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Syte Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2002 · London

16 applications on PlanIndex · across 5 councils · 88% granted

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

See their track record

Documents

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

32 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 18 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.

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

  • 36 Devonshire Place Mews London W1G 6DD

    25/06761/NMA Submitted 19 Sep 2025 50 yards away

    Amendments to planning permission granted on appeal dated 27 February 2025 (RN:23/08700/FULL and APP/X5990/W/24/3351064) for Demolition of existing building and erection of replacement dwellinghouse (Class C3) over ground, first and second floor levels with rear balcony at first floor level; NAMELY, to increase external wall thickness, amend the wording of Condition 6, to make minor amendments to windows and the rear dormer, internal alterations and removal of one drainpipe.

    Granted Amendments Loft or dormer Demolition +1 21 docs
    Domestic

  • 37 Devonshire Place London W1G 6JS

    07/02859/FULL Submitted 29 Mar 2007 50 yards away

    Excavation at rear basement level to create additional accommodation, including rooflights to existing ground floor terrace.

    Granted Full applications Loft or dormer 9 docs

  • 37 Devonshire Place London W1G 6JS

    07/02860/LBC Submitted 29 Mar 2007 50 yards away

    Extension to basement and beneath ground floor breakfast room, including rooflights to existing ground floor terrace.

    Granted Heritage and listed buildings Extension Loft or dormer 2 docs

  • 37 Devonshire Place London W1G 6JS

    07/00480/ADLBC Submitted 15 Jan 2007 50 yards away

    Details of windows and doors pursuant to Condition 2(1) of listed building consent dated 28 December 2006 (RN: 06/09057).

    Refused Conditions Windows or glazing 4 docs

  • 37 Devonshire Place London W1G 6JS

    06/09056/FULL Submitted 10 Nov 2006 50 yards away

    Alterations to basement/ground floor flat to include new windows and rear extension (excavation) at basement level.

    Granted Full applications Extension Windows or glazing 8 docs

  • 37 Devonshire Place London W1G 6JS

    06/09057/LBC Submitted 10 Nov 2006 50 yards away

    Alterations to basement/ground floor flat to include new windows and rear extension at basement level.

    Granted Heritage and listed buildings Extension Windows or glazing 2 docs

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications