Planning application
37 Harley Street London W1G 8QG
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. (Linked with 26/03518/LBC)
As published by the council, reference 26/03517/FULL
Application record
- Reference
- 26/03517/FULL
- Type
- Full Planning Permission 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).
-
26/05434/LBC Decided
37 Harley Street London W1G 8QG
Installation of secondary glazing to the arched window at ground floor level.
-
26/03518/LBC Awaiting decision
37 Harley Street London W1G 8QG
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)
Timeline
Dates from the published record
-
28 May 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
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
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 recordDocuments
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 documentsWhat 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 full applications in a median of 119 days. More in our guide to how long planning decisions take.
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
-
37 Harley Street London W1G 8QG
90% historically approved · decision due ~23 Jul
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)
Awaiting decision Heritage and listed buildings 8 docs -
37 Harley Street London W1G 8QG
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
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
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
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
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 docsSmall domestic
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