Planning application
4 Marylebone Mews London W1G 8PY
Works: Loft or dormer Windows or glazing
Relates to 26/04439/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Internal refurbishment including replacement of glazing to windows, clerestory, rooflights, entrance door and sidelights and minor external alterations. [Linked to 26/04439/FULL]
As published by the council, reference 26/04440/LBC
Application record
- Reference
- 26/04440/LBC
- Category
- Heritage and listed buildings
- Status
- Pending
- Received
- 3 Jul 2026
- Validated
- 3 Jul 2026
- Postcode
- W1G 8PY
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2026.
-
26/04439/FULL Awaiting decision
4 Marylebone Mews London W1G 8PY
Replacement of glazing to windows, clerestory, rooflights, entrance door and sidelights. [Linked to 26/04440/LBC]
Timeline
Dates from the published record
-
3 Jul 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 28 August 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 65 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
26/04439/FULL Awaiting decision
4 Marylebone Mews London W1G 8PY
Replacement of glazing to windows, clerestory, rooflights, entrance door and sidelights. [Linked to 26/04440/LBC]
1 later application on the register refers to this one:
-
26/04439/FULL Awaiting decision
4 Marylebone Mews London W1G 8PY
Replacement of glazing to windows, clerestory, rooflights, entrance door and sidelights. [Linked to 26/04440/LBC]
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 93 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 500 metres
-
4 Marylebone Mews London W1G 8PY
87% historically approved · decision due ~28 Aug
Replacement of glazing to windows, clerestory, rooflights, entrance door and sidelights. [Linked to 26/04440/LBC]
Awaiting decision Full applications Loft or dormer Windows or glazing -
2 Marylebone Mews London W1G 8PU
Approval of details pursuant to Conditions 5 and 6 of planning permission dated 3 November 2011; namely for a sample of obscure glazing, detailed drawings of glass screen for windows and second floor terrace and detailed drawings of new windows and doors
Granted Full applications Windows or glazing 5 docs -
Hahnemann House 32 Welbeck Street London W1G 8EU
90% historically approved · decision due ~10 Jul
Alteration and improvement of existing heating and cooling to the Chapel through reinstatement of a working fan to dome, installation of fan coil units and an associated air source heat pump, removal of existing wall heating panels, and opening of fixed windows. (Linked to 26/03229/FULL)
Awaiting decision Heritage and listed buildings Windows or glazing 12 docs -
Hahnemann House 32 Welbeck Street London W1G 8EU
87% historically approved · decision due ~10 Jul
Alteration and improvement of existing heating and cooling to the Chapel through reinstatement of a working fan to dome, installation of fan coil units and an associated air source heat pump, removal of existing wall heating panels, and opening of fixed windows. (Linked to 26/03230/LBC)
Awaiting decision Full applications Windows or glazing 12 docs -
Hahnemann House 32 Welbeck Street London W1G 8EU
87% historically approved · decision due ~22 Oct
Installation of CCTV to front entrance and rear emergency exit. (Retrospective) Linked with 25/06098/LBC
Awaiting decision Full applications 15 docs -
Hahnemann House 32 Welbeck Street London W1G 8EU
90% historically approved · decision due ~22 Oct
Installation of CCTV to front entrance and rear emergency exit. (Retropsective) Linked with 25/06097/FULL
Awaiting decision Heritage and listed buildings 11 docs
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