Planning application
29 - 31 Hill Street London W1J 5LS
Works: Loft or dormer Roofing 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 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.
As published by the council, reference 26/07438/NMA
Application record
- Reference
- 26/07438/NMA
- Category
- Amendments
- Status
- Pending
- Received
- 2 Nov 2026
- Validated
- 2 Nov 2026
- Postcode
- W1J 5LS
Site history
Applications at this address on the Westminster register
This site has had 5 applications since 2026.
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26/07335/ADFULL Awaiting decision
29 - 31 Hill Street London W1J 5LS
Details of all new windows or new window components pursuant to condition 4 ( Part 2 ) of planning permission dated 09 July 2025 (RN: 25/01006/FULL). (Linked with 26/07285/ADLBC)
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26/07282/ADLBC Awaiting decision
29 - 31 Hill Street London W1J 5LS
Details of tanking or waterproofing pursuant to condition 6 (part 5) of listed building consent dated 09 July 2025 (RN: 25/01007/LBC).
-
26/07285/ADLBC Awaiting decision
29 - 31 Hill Street London W1J 5LS
Details of new doors and windows and window components pursuant to condition 6 ( parts 1 and 2) of listed building consent dated 09 July 2025 (RN: 25/01007/LBC). (Linked with 26/07335/ADFULL)
-
26/04918/TCA Decided
29 - 31 Hill Street London W1J 5LS
1 x horse chestnut (T1, rear): laterally crown reduce by 1.0-1.5m as identified by the red lines shown on T1-SK1 and T1-SK2.
Timeline
Dates from the published record
-
2 Nov 2026
Received by Westminster
-
6 Nov 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 28 December 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.
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 81 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 0.3 miles
-
29 - 31 Hill Street London W1J 5LS
89% historically approved · decision due ~18 Dec
Details of tanking or waterproofing pursuant to condition 6 (part 5) of listed building consent dated 09 July 2025 (RN: 25/01007/LBC).
Awaiting decision -
29 - 31 Hill Street London W1J 5LS
89% historically approved · decision due ~22 Dec
Details of all new windows or new window components pursuant to condition 4 ( Part 2 ) of planning permission dated 09 July 2025 (RN: 25/01006/FULL). (Linked with 26/07285/ADLBC)
Awaiting decision Windows or glazing -
29 - 31 Hill Street London W1J 5LS
89% historically approved · decision due ~22 Dec
Details of new doors and windows and window components pursuant to condition 6 ( parts 1 and 2) of listed building consent dated 09 July 2025 (RN: 25/01007/LBC). (Linked with 26/07335/ADFULL)
Awaiting decision Windows or glazing -
29 - 31 Hill Street London W1J 5LS
100% historically approved · decision due ~17 Sep
1 x horse chestnut (T1, rear): laterally crown reduce by 1.0-1.5m as identified by the red lines shown on T1-SK1 and T1-SK2.
Decided Trees -
36 Hill Street London W1J 5NR
89% historically approved · decision due ~20 Aug
Details of noise survey; pursuant to condition 6 of planning permission dated 15th May 2026 (25/09046/FULL)
Awaiting decision -
36 Hill Street London W1J 5NR
90% historically approved · decision due ~9 Feb
Replacement of existing roof mounted air conditioning chiller unit(Linked to 25/09046/FULL)
Awaiting decision Heritage and listed buildings 11 docs
Other amendment applications
In Westminster
-
26/07459/NMA Awaiting decision
1 Hanover Square London W1S 1HA
Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.
-
26/07389/NMA Decided
Flat 1 5 Grittleton Road London W9 2DD
Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.
-
26/07377/NMA Awaiting decision
60 Ledbury Road London W11 2AJ
Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C
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26/07375/NMA Awaiting decision
77 Hereford Road London W2 5BB
Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.
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26/07312/NMA Awaiting decision
15 Rodmarton Street London W1U 8BL
Amendment to planning permission dated 5 May 2026 (26/00539/FULL) for: Erection of a single storey conservatory at rear ground floor level, use of the garage as internal living accommodation and installation of a new skylight at main roof level namely, to allow a reduction in the size of the rear orangery and alterations to its roof arrangement.