Planning application
1 Chiltern Street London W1U 7PA
Works: Extension Windows or glazing
Relates to 26/05305/NMA
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Infill of arrow slit window in north gable; conversion of existing fanlight to louvres; modifications to doors; amalgamation of bedrooms 17 & 18; and function room to north-east corner of basement. (Linked with 26/05305/NMA)
As published by the council, reference 26/05485/LBC
Application record
- Reference
- 26/05485/LBC
- Category
- Heritage and listed buildings
- Status
- Pending
- Received
- 12 Aug 2026
- Validated
- 12 Aug 2026
- Postcode
- W1U 7PA
Site history
Applications at this address on the Westminster register
This site has had 8 applications since 2025: 1 approved, 0 refused.
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26/05544/FULL Awaiting decision
1 Chiltern Street London W1U 7PA
Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof and installation of a pressurised stair system. (Linked with 26/05545/LBC)
-
26/05545/LBC Awaiting decision
1 Chiltern Street London W1U 7PA
Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof (maintenance use) and installation of a pressurised stair system. (Linked with 26/05544/FULL)
-
26/05305/NMA Awaiting decision
1 Chiltern Street London W1U 7PA
Amendments to planning permission dated 28th February 2025 (RN: 23/02315/FULL) for, "Use of the fire station as a 26 bed hotel (Class C1). Demolition of part of the existing building at the rear, including demolition of enclosures in the ground floor and basement courtyards and demolition of the steel practice tower. Erection of a part three and five-storey wing to main building. Excavation of courtyard to create basement level accommodation, including plant room. Rear extensions to main building. External and internal alterations"; Namely, infill of existing arrow slit window in north gable, new dishwasher extract onto Broadstone Place, new internal floorplans to reflect enlarged doorways and escape routes and the reversing of a doorway onto Chiltern Street for service access, amendments to description of development to state up to 26 bedrooms and alterations to basement layout and use to include basement function roo
-
26/05300/LBC Awaiting decision
1 Chiltern Street London W1U 7PA
Minor internal structural repairs to cracked walls at First Floor (Level 1) and Second Floor (Level 2)
-
26/03972/LBC Decided
1 Chiltern Street London W1U 7PA
Alterations to steelwork at fourth floor level.
-
26/01760/LBC Awaiting decision
1 Chiltern Street London W1U 7PA
Removal of areas of fire and water damaged plasterwork internally. Temporary removal of laths at third floor level.
-
25/05136/LBC Granted
1 Chiltern Street London W1U 7PA
Reinstatement of roof structure, roof finishes and plant following fire on 14.02.25
Timeline
Dates from the published record
-
12 Aug 2026
Received by Westminster
-
14 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 7 October 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 61 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
26/05305/NMA Awaiting decision
1 Chiltern Street London W1U 7PA
Amendments to planning permission dated 28th February 2025 (RN: 23/02315/FULL) for, "Use of the fire station as a 26 bed hotel (Class C1). Demolition of part of the existing building at the rear, including demolition of enclosures in the ground floor and basement courtyards and demolition of the steel practice tower. Erection of a part three and five-storey wing to main building. Excavation of courtyard to create basement level accommodation, including plant room. Rear extensions to main building. External and internal alterations"; Namely, infill of existing arrow slit window in north gable, new dishwasher extract onto Broadstone Place, new internal floorplans to reflect enlarged doorways and escape routes and the reversing of a doorway onto Chiltern Street for service access, amendments to description of development to state up to 26 bedrooms and alterations to basement layout and use to include basement function roo
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 87 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
-
1 Chiltern Street London W1U 7PA
92% historically approved · decision due ~7 Oct
Amendments to planning permission dated 28th February 2025 (RN: 23/02315/FULL) for, "Use of the fire station as a 26 bed hotel (Class C1). Demolition of part of the existing building at the rear, including demolition of enclosures in the ground floor and basement courtyards and demolition of the steel practice tower. Erection of a part three and five-storey wing to main building. Excavation of courtyard to create basement level accommodation, including plant room. Rear extensions to main building. External and internal alterations"; Namely, infill of existing arrow slit window in north gable, new dishwasher extract onto Broadstone Place, new internal floorplans to reflect enlarged doorways and escape routes and the reversing of a doorway onto Chiltern Street for service access, amendments to description of development to state up to 26 bedrooms and alterations to basement layout and use to include basement function roo
Awaiting decision Amendments Extension Demolition +1 -
1 Chiltern Street London W1U 7PA
87% historically approved · decision due ~9 Oct
Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof and installation of a pressurised stair system. (Linked with 26/05545/LBC)
Awaiting decision Full applications -
1 Chiltern Street London W1U 7PA
90% historically approved · decision due ~9 Oct
Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof (maintenance use) and installation of a pressurised stair system. (Linked with 26/05544/FULL)
Awaiting decision Heritage and listed buildings -
1 Chiltern Street London W1U 7PA
90% historically approved · decision due ~11 Aug
Alterations to steelwork at fourth floor level.
Decided Heritage and listed buildings -
1 Chiltern Street London W1U 7PA
90% historically approved · decision due ~6 Oct
Minor internal structural repairs to cracked walls at First Floor (Level 1) and Second Floor (Level 2)
Awaiting decision Heritage and listed buildings -
1 Chiltern Street London W1U 7PA
90% historically approved · decision due ~13 May
Removal of areas of fire and water damaged plasterwork internally. Temporary removal of laths at third floor level.
Awaiting decision Heritage and listed buildings 13 docs
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