Planning application
Radiant House 36 - 38 Mortimer Street London W1W 7RG
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Replacement of three air conditioning condensers and installation of four additional air conditioning condensors in the rear external stairwell at basement and ground floor levels. (Linked to 26/03217/LBC)
As published by the council, reference 26/03105/FULL
Application record
- Reference
- 26/03105/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 12 May 2026
- Validated
- 15 May 2026
- Ward
- West End
- Postcode
- W1W 7RG
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2026.
-
26/06020/LBC Awaiting decision
Radiant House 36 - 38 Mortimer Street London W1W 7RG
Removal of two external steel escape platforms at 3rd and 4th floor levels to rear elevation, forming new protected escape route at second floor and additional internal alterations.
-
26/03217/LBC Awaiting decision
Radiant House 36 - 38 Mortimer Street London W1W 7RG
Replacement of three air conditioning condensers and installation of four additional air conditioning condensors in rear external stairwell at basement and ground floor levels. (Linked to 26/03105/FULL)
Timeline
Dates from the published record
-
12 May 2026
Received by Westminster
-
15 May 2026
Validated
Checked as complete and ready for consideration.
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 10 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 66 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
DG Architecture Ltd Agent, an architecture practice
7 applications on PlanIndex · across 4 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 recordDocuments
Plans, drawings, consultee responses and the officer's report
11 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 91 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
-
Radiant House 36 - 38 Mortimer Street London W1W 7RG
90% historically approved · decision due ~4 Nov
Removal of two external steel escape platforms at 3rd and 4th floor levels to rear elevation, forming new protected escape route at second floor and additional internal alterations.
Awaiting decision Heritage and listed buildings -
Radiant House 36 - 38 Mortimer Street London W1W 7RG
90% historically approved · decision due ~10 Jul
Replacement of three air conditioning condensers and installation of four additional air conditioning condensors in rear external stairwell at basement and ground floor levels. (Linked to 26/03105/FULL)
Awaiting decision Heritage and listed buildings 15 docs -
Basement And Ground Floor 42 - 44 Great Titchfield Street London W1W 7PY
87% historically approved · decision due ~27 Oct
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Awaiting decision Full applications Windows or glazing 11 docs -
Basement And Ground Floor 42 - 44 Great Titchfield Street London W1W 7PY
84% historically approved · decision due ~10 Aug
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30 - 32 Mortimer Street London W1W 7RE
89% historically approved · decision due ~8 Oct
Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 20th February 2025 (RN:24/09057/FULL).
Decided Windows or glazing -
30 - 32 Mortimer Street London W1W 7RE
89% historically approved · decision due ~8 Oct
Details of samples of facing materials including glazing and elevations and roof plans annotated to show where the materials are to be located pursuant to Condition 3 of planning permission dated 24th April 2025 (RN:25/01023/FULL)
Decided Windows or glazing
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