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Planning application

Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA

Awaiting decision Westminster 26/03248/LBC Listed Building Consent Application

Works: Extension Windows or glazing

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Replacement of existing front elevaiton sash windows with slimline double-glazed heritage units together with minor repair and redecoration of existing facade and existing front doors; replacement of windows and doors in rear modern extension and internal lightwell along with formation of a new window opening. (Linked with 26/03247/FULL)

As published by the council, reference 26/03248/LBC

Application record

Reference
26/03248/LBC
Type
Listed Building Consent Application
Status
Pending
Received
18 May 2026
Validated
28 May 2026
Ward
West End
Postcode
W1K 6PA

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2025: 1 approved, 0 refused.

  • 26/03247/FULL Awaiting decision

    Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA

    Replacement of existing front elevation sash windows with slimline double-glazed heritage units; replacement of windows and doors in rear modern extension and internal lightwell along with formation of a new window opening. (Linked with 26/03248/LBC)

    Submitted 18 May 2026 Full applications
  • 25/09294/LBC Granted

    Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA

    Replacement and reconfiguration of modern partitions at ground and lower ground floor level, along with the replacement of modern bathroom and kitchen fittings and finishes.

    Decided 31 Mar 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 18 May 2026

    Received by Westminster

  2. 28 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 21 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 23 July 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 91 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Echlin Agent, registered in London

Active · incorporated 2015 · London

5 applications on PlanIndex · across 2 councils

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

1 document 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 119 days. More in our guide to how long planning decisions take.

About heritage and listed building applications

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.

Nearby applications

Within 0.3 miles

  • Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA

    25/09294/LBC Submitted 23 Dec 2025 50 yards away

    Replacement and reconfiguration of modern partitions at ground and lower ground floor level, along with the replacement of modern bathroom and kitchen fittings and finishes.

    Granted Heritage and listed buildings 16 docs
  • Basement And Ground Floor Masionette 3 Upper Brook Street London W1K 6PA

    26/03247/FULL Submitted 18 May 2026 50 yards away

    88% historically approved · decision due ~23 Jul

    Replacement of existing front elevation sash windows with slimline double-glazed heritage units; replacement of windows and doors in rear modern extension and internal lightwell along with formation of a new window opening. (Linked with 26/03248/LBC)

    Awaiting decision Full applications Extension Windows or glazing 23 docs
  • Development Site At 1 Lees Place, 43 North Audley Street And 22 Grosvenor Square London W1K 6DT

    26/02508/FULL Submitted 16 Apr 2026 50 yards away

    88% historically approved · decision due ~15 Jun

    Installation of a single-storey retail pod to the front of the building, fronting North Audley Street, for a temporary period from 1 September 2026 to 31 March 2027. (Linked with 26/02509/LBC)

    Awaiting decision Full applications 16 docs
    Small domestic
  • Development Site At 1 Lees Place, 43 North Audley Street And 22 Grosvenor Square London W1K 6DT

    26/02509/LBC Submitted 16 Apr 2026 50 yards away

    90% historically approved · decision due ~15 Jun

    Installation of a single-storey retail pod to the front of the building, fronting North Audley Street, for a temporary period from 1 September 2026 to 31 March 2027. (Linked with 26/02508/FULL)

    Awaiting decision Heritage and listed buildings 6 docs
    Small domestic
  • 2 Shepherd Close London W1K 6EA

    22/04380/NMA Submitted 1 Jul 2022 50 yards away

    Amendments to planning permission dated 23 June 2022 (RN:22/02527/FULL) for Enlargement of existing front lightwell, addition of rooflight over main staircase, relocation of lower ground floor door on the rear elevation, addition of lead capped entrance canopy at lower ground level, replacement lead roofing on rear outbuilding, alterations to fenestration openings at lower ground level, replacement fenestrations, and other associated works. NAMELY; revisions to window openings at front lower ground floor level and addition of air bricks.

    Granted Amendments Loft or dormer Windows or glazing 11 docs
  • Flat A 8 Lees Place London W1K 6LJ

    26/05206/FULL Submitted 3 Aug 2026 50 yards away

    88% historically approved · decision due ~30 Sep

    Installation of three new condenser units located within an enclosure in the rear garden and enlargement of existing garden access door.

    Decided Full applications

In Westminster

  • 26/07529/LBC Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

    Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
  • 26/07509/LBC 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 26/07508/FULL)

    Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
  • 26/07473/LBC Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

    Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
  • 26/07471/LBC Awaiting decision

    12 Queen Anne's Gate London SW1H 9AA

    Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

    Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
  • 26/07461/LBC Awaiting decision

    1 Savile Row London W1S 3JR

    Minor internal works comprising redecoration and upgrades to lighting, flooring and bathroom and kitchen facilities, together with external works including new lighting and signage.

    Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings