Planning application
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Works: Extension Loft or dormer Windows or glazing
Relates to 25/08970/NMA
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 30 July 2024 (RN: 24/02160/FULL) for, "Comprehensive refurbishment of the buildings, in connection with use of all of the upper floors as office accommodation (Use Class E), erection of a setback rooftop extension, and a double mansard extension with new dormer windows to the Glasshouse Street elevation including new amenity terraces; alterations to Glasshouse Street chimneys and new plant equipment and screening; external alterations to Glasshouse Street facades including new retail shopfront, new office reception entrance and glazing, new service entrance and associated works; internal alterations including enlargement of the office reception at ground floor, infilling the atrium to provide additional office accommodation (Use Class E) at first floor, and the relocation of the goods corridor on the ground floor; and other associated works"; NAMELY: (i) Infilling of an existing first-floor window within the approved internal courtyard/atrium, including removal of the existing window frame and infilling the opening with matching brickwork; and (ii) Amendment to the wording of Condition 6 to substitute a revised drawings number showing the location of the waste and recycling store.
As published by the council, reference 26/06773/NMA
Application record
- Reference
- 26/06773/NMA
- Category
- Amendments
- Status
- Pending
- Received
- 5 Oct 2026
- Validated
- 5 Oct 2026
- Ward
- West End
- Postcode
- W1B 5DF
Site history
Applications at this address on the Westminster register
This site has had 24 applications since 2010: 13 approved, 1 refused.
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26/06559/LBC Decided
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Infilling of an existing window at first floor level and associated works, in connection with the Phase 2 proposals approved under (RN 24/02163/LBC) and (RN 25/08966/LBC).
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26/03868/ADFULL Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of facing materials pursuant to condition 16 of planning permission dated 30 July 2024 (RN: 24/02160/FULL).
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26/03784/ADLBC Decided
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Samples of facing materials pursuant to condition 3 of Llsted building consent dated 30 July 2024 (RN :24/02163/LBC)
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26/02309/ADLBC Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of method statement relating to repair of retained cornices including details of any reinstatement works pursuant to condition 4 of listed building consent dated 06 June 2025 (RN: 25/00973/LBC)
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26/02312/ADFULL Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of biodiversity management plan in relation to green roof areas pursuant to condition 9 of planning permission dated 30 July 2024 (RN: 24/02160/FULL).
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26/02283/ADFULL Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of samples (photographs and specification) of the facing materials, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 16 of planning permission dated 30th July 2024 (RN: 24/02160/FULL)
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26/02201/ADLBC Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of samples (photographs and specification) 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 3 of listed building dated 30th July 2024 (RN:24/02163/LBC)
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26/01991/ADFULL Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Detailed Servicing Management Plan pursuant to condition 19 of planning permission dated 30th July 2024 (RN:24/02160).
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26/01340/ADLBC Awaiting decision
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Details of shopfronts and external doors pursuant to listed building consent dated 24 February 2026 (RN: 25/07749/LBC)
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25/08966/LBC Granted
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Alteration of the basement layout; installation of CCTV cameras on the external elevations; reconfiguration of the Glasshouse Street reception areas; alterations to the dry riser arrangements; alterations to the Core 3 layout; changes to the proposed atrium rooflight, the terrace landscaping, and the omission of a small rooflight on level 7; and changes to the extent of demolition.
Timeline
Dates from the published record
-
5 Oct 2026
Received by Westminster
-
7 Oct 2026
Added to PlanIndex
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Decision
Awaiting decision
Decision expected by 30 November 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 86 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
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25/08970/NMA Granted
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Amendment of planning permission dated 30th July 2024 (RN 24/02160/FULL) for the Comprehensive refurbishment of the buildings, in connection with use of all of the upper floors as office accommodation (Use Class E), erection of a setback rooftop extension, and a double mansard extension with new dormer windows to the Glasshouse Street elevation including new amenity terraces; alterations to Glasshouse Street chimneys and new plant equipment and screening; external alterations to Glasshouse Street facades including new retail shopfront, new office reception entrance and glazing, new service entrance and associated works; internal alterations including enlargement of the office reception at ground floor, infilling the atrium to provide additional office accommodation (Use Class E) at first floor, and the relocation of the goods corridor on the ground floor; and other associated works. NAMELY, integration of Glasshouse Street dry riser inlet into the glazing system; Minor amendment to location of office plate notional stairs and ramps; Omission of external wall lining; Minor amendment to Atrium Rooflight glass panel sizes; and omission of Level 7 rooflight.
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
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Venture House 27 - 29 Glasshouse Street London W1B 5DF
90% historically approved · decision due ~19 Nov
Infilling of an existing window at first floor level and associated works, in connection with the Phase 2 proposals approved under (RN 24/02163/LBC) and (RN 25/08966/LBC).
Decided Heritage and listed buildings Windows or glazing -
Venture House 27 - 29 Glasshouse Street London W1B 5DF
89% historically approved · decision due ~4 Aug
Samples of facing materials pursuant to condition 3 of Llsted building consent dated 30 July 2024 (RN :24/02163/LBC)
Decided -
Sites At 74-90 Regent Street 1-19 Quadrant Arcade 19 And 27 - 29 Glasshouse Street London W1B 5DF
Approval of details to discharge of Condition 5 of the listed building consent dated 10.4.08 (RN: 07/05156/LBC) for various works, namely confirmation of an appropriate Section 106 agreement that includes provision for the historic environment.
Granted Conditions 2 docs -
Venture House 27 - 29 Glasshouse Street London W1B 5DF
89% historically approved · decision due ~27 May
Details of samples (photographs and specification) 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 3 of listed building dated 30th July 2024 (RN:24/02163/LBC)
Awaiting decision Conditions Windows or glazing 6 docs -
Venture House 27 - 29 Glasshouse Street London W1B 5DF
Detailed drawings of revised finish to ironmongery to match colour of window and revised handle design to reflect historic designs pursuant to condition 4 of listed building consent dated 29th July 2025 (RN:2503849/LBC)
Granted Conditions Windows or glazing 6 docs -
Venture House 27 - 29 Glasshouse Street London W1B 5DF
89% historically approved · decision due ~28 Apr
Details of shopfronts and external doors pursuant to listed building consent dated 24 February 2026 (RN: 25/07749/LBC)
Awaiting decision Conditions 8 docs
Other amendment applications
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26/07181/NMA Awaiting decision
Newlands House 37 - 40 Berners Street London W1T 3NA
Amendments to planning permission dated 9th October 2025 (RN:25/04048/FULL) forInfilling of the ground floor undercroft along Mortimer Street (Class E), replacement of ground floor frontage to the whole building and refurbishment of the upper floor facades. Namely, alterations to the approved green roof area at the site.
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26/07132/NMA Awaiting decision
157 - 159 Victoria Street London SW1E 5NA
Amendments to planning permission dated 27 August 2026 (RN: 26/04666/FULL) for the: Installation of combined defibrillator and bleed kit cabinets to external wall of Nationwide Building Society branch. NAMELY, to allow alteration to design of combined defibrillator and bleed kit cabinet.
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26/07086/NMA Awaiting decision
Windsor House 50 Victoria Street London SW1H 0TL
Amendments to planning permission dated 18th September 2026 (RN 26/01445/FULL) for the Refurbishment of Windsor House and Christchurch House (excluding residential part), including re-cladding and amendment of facades, replacement of windows, new end-of-trip facilities, installation of roof-level plant and screening, and associated works, to provide office, retail, restaurant and indoor recreation accommodation (Class E) with amenity spaces, including a new roof level pavilion to Christchurch House and link bridge between Windsor House and Christchurch House. NAMELY, amendments to the wording of Conditions 1, 11, 12, 13,14, 15 and 26.
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26/07071/NMA Awaiting decision
London School Of Economics & Political Science Houghton Street London WC2A 2AE
Amendments to planning permission dated 21st Februrary 2018 (RN:17/05855/FULL) for Variation of Condition 1 of planning permission dated 19 October 2016 (RN:16/05155/FULL) for demolition of existing buildings known as Clare Market, The Anchorage, the East Building, St Clements (partial) and Tower One (partial) and redevelopment to provide replacement interconnected academic facilities for Class D1 and ancillary uses, comprising a two storey basement, a part six storey / part 13 storey building and a seven storey core extension to the St Clements building and associated cycle parking and other works; all arranged around a new public square namely, removal of two cycle stands.
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26/06211/NMA Decided
15 Portland Place London W1B 1PT
Amendments to planning permission dated 21 July 2022 (RN:22/03521/FULL) which varied Condition 5 of planning permission dated 11 April 2018 (17/10815/FULL) for: Use of the building for a temporary period of 20 years as a medical use (Use Class D1) personal to OM Tower LLP namely to amend the wording of Condition 3 to omit the words " No one else may benefit from this permission" to allow the use by third party practitioners.