Planning application
1 Chiltern Street London W1U 7PA
Works: Extension Demolition Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
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
As published by the council, reference 26/05305/NMA
Application record
- Reference
- 26/05305/NMA
- Category
- Amendments
- Status
- Pending
- Received
- 5 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)
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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)
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26/05485/LBC Awaiting decision
1 Chiltern Street London W1U 7PA
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)
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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)
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26/03972/LBC Decided
1 Chiltern Street London W1U 7PA
Alterations to steelwork at fourth floor level.
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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.
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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
-
5 Aug 2026
Received by Westminster
-
12 Aug 2026
Validated
Checked as complete and ready for consideration.
-
14 Aug 2026
Added to PlanIndex
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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
1 later application on the register refers to this one:
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26/05485/LBC Awaiting decision
1 Chiltern Street London W1U 7PA
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)
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 amendment applications in a median of 57 days. More in our guide to how long planning decisions take.
About amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
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 ~7 Oct
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)
Awaiting decision Heritage and listed buildings Extension Windows or glazing -
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
Other amendment applications
In Westminster
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26/05886/NMA Awaiting decision
10 Spring Gardens London SW1A 2BN
Amendments to planning permission dated 10th July 2025 (RN 25/00695/FULL) for the Use of part-ground, first, sixth, seventh and eighth floor levels as an Embassy (sui generis). Associated external alterations to the ground floor facade on Carlton House Terrace, and part ground floor to Piazza (Spring Gardens) frontage. External alterations to the doors. Installation of roof plant and security screens to the eighth floor. NAMELY, Addition of external attached building signage on West Elevation and South Elevation; Addition of two flagpoles on West Elevation; Addition of a parcel pass through, rather than fixed panel, to door on North Elevation; and omission of smoke vent and replacement with new paving to match existing paving.
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26/05881/NMA Awaiting decision
50A Warlock Road London W9 3LW
Amendments to planning permission dated 11 August 2026 (RN: 26/04158/FULL) for the: Erection of a single-storey rear extension at lower ground floor level; replacement of existing rear window with a door at ground floor level and creation of terrace with associated railings/screening; and associated external alterations. NAMELY, revise the height of the rear elevation kitchen French doors.
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26/05798/NMA Awaiting decision
3 Blenheim Road London NW8 0LU
Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, internal alterations and minor adjustment to rooflight position.
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26/05670/NMA Awaiting decision
64 St James's Street London SW1A 1NF
Amendments to planning permission dated 2nd September 2021 (21/02158/FULL) for: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works namely, amendments to allow for the installation of a condenser unit within the rear lightwell.
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26/05674/NMA Awaiting decision
52 Eaton Place London SW1X 8AL
Amendments to planning permission dated 25 September 2025 (25/05108/FULL) for: Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors namely, to allow replacement of second floor rear full height sash window with set of french doors.