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Planning application

37 Harley Street London W1G 8QG

Awaiting decision Westminster 26/03518/LBC Listed Building Consent Application

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

Proposal

Installation of two air condenser units within acoustic enclosure to front lightwell and three fan coil units internally to ground floor level. (Linked with 26/03517/FULL)

As published by the council, reference 26/03518/LBC

Application record

Reference
26/03518/LBC
Type
Listed Building Consent Application
Status
Pending
Received
28 May 2026
Validated
28 May 2026
Ward
Marylebone
Postcode
W1G 8QG

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2026.

  • 26/06417/ADLBC Decided

    37 Harley Street London W1G 8QG

    Detailed of the proposed fan coil units and service drawing plans and a method statement in relation to the installation of the intenal and external units pursuant to conditions 3 and 4 of listed building consent dated 18th August 2026 (RN: 26/03518/LBC).

    Submitted 18 Sep 2026
  • 26/05434/LBC Decided

    37 Harley Street London W1G 8QG

    Installation of secondary glazing to the arched window at ground floor level.

    Decided 28 Sep 2026 Heritage and listed buildings
  • 26/03517/FULL Awaiting decision

    37 Harley Street London W1G 8QG

    Installation of two air condenser units within acoustic enclosure to front lightwell. (Linked with 26/03518/LBC)

    Submitted 28 May 2026 Full applications

Timeline

Dates from the published record

  1. 28 May 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. 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.

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/06417/ADLBC Decided

    37 Harley Street London W1G 8QG

    Detailed of the proposed fan coil units and service drawing plans and a method statement in relation to the installation of the intenal and external units pursuant to conditions 3 and 4 of listed building consent dated 18th August 2026 (RN: 26/03518/LBC).

    Submitted 18 Sep 2026

Who's behind it

Company information only, from the register and Companies House

Howard de Walden Estates Limited Agent, a developer registered in London

Active · incorporated 1963 · London

37 applications on PlanIndex · 91% 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

8 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.

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

  • 37 Harley Street London W1G 8QG

    26/03517/FULL Submitted 28 May 2026 50 yards away

    88% historically approved · decision due ~23 Jul

    Installation of two air condenser units within acoustic enclosure to front lightwell. (Linked with 26/03518/LBC)

    Awaiting decision Full applications 8 docs

  • 37 Harley Street London W1G 8QG

    26/05434/LBC Submitted 10 Aug 2026 50 yards away

    Installation of secondary glazing to the arched window at ground floor level.

    Decided Heritage and listed buildings Windows or glazing

  • 37 Harley Street London W1G 8QG

    26/06417/ADLBC Submitted 18 Sep 2026 50 yards away

    89% historically approved · decision due ~13 Nov

    Detailed of the proposed fan coil units and service drawing plans and a method statement in relation to the installation of the intenal and external units pursuant to conditions 3 and 4 of listed building consent dated 18th August 2026 (RN: 26/03518/LBC).

    Decided

  • 23 Queen Anne Street London W1G 9HN

    26/00460/FULL Submitted 27 Jan 2026 50 yards away

    88% historically approved · decision due ~24 Mar

    Installation of photovoltaic panels (PV) at main roof level.

    Awaiting decision Full applications 14 docs

  • 43 - 49 Harley Street London W1G 8BT

    25/06693/LBC Submitted 18 Sep 2025 50 yards away

    Installation of support beam for failing beam in room G11 ground floor of 45 Harley Street.

    Granted Heritage and listed buildings 16 docs

  • 30 Queen Anne Street London W1G 8HX

    25/05505/FULL Submitted 6 Aug 2025 50 yards away

    Erection of an infill extension at basement and ground floor level, Installation of a new dormer on top of the rear closet wing to facilitate a light overrun, erection of a single storey extension at first floor level to the rear of the property and installation of railing on the eastern boundary of the site to facilitate the use of flat roof at first floor level as a terrace. All to provide enhanced office accommodation (Class E)

    Refused Full applications Extension Loft or dormer 29 docs
    Small domestic

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