33 Glasshouse Street London W1B 5DG Data via plota.co.uk
Proposal
External alterations at sixth floor roof level, including the removal of the existing plant room roof and enlargement of existing openings to create amenity terraces, together with the formation of a new door and windows to the Cupola room on the Glasshouse Street elevation. Installation of an external decking system with integrated balustrades, planters and seating, and other associated works. (Linked to 26/06458/LBC) Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision between 11 Nov 2026 and 20 Nov 2026, from Westminster's recent extensions.
Documents 23
Statements & assessments 2
Plans & drawings 11
Application forms 2
Consultation & comments 1
Other documents 7
Associated applications 2
- External alterations at sixth floor roof level, including the removal of the existing plant room roof and enlargement…
Site constraints 10
Show the other 34 with distances
- 25 m106-130, REGENT STREET W1 (See details for further address information)Grade II
- 41 mThe QuadrantGrade II
- 55 m82, Brewer Street W1Grade II
- 60 m80, Brewer Street W1Grade II
- 63 m20, GOLDEN SQUARE (See details for further address information)Grade II
- 68 mVigo House Vigo House, Empire House, Westmorland House and New GalleryGrade II
- 69 mRegent Palace Hotel (Main Building and Bridge)Grade II
- 69 mPiccadilly HotelGrade II*
- 85 m2, Lower John Street W1Grade II
- 90 m21, Golden Square W1Grade II
- 92 m4 4a, Lower John Street W1Grade II
- 93 mOur Lady of the Assumption Roman Catholic ChurchGrade II*
- 95 m19, Golden Square W1Grade II
- 96 m29, Sackville Street W1Grade II*
- 96 m30 and 30a, Sackville Street W1Grade II
- 97 m31, Sackville Street W1Grade II
- 100 m32, Sackville Street W1Grade II
- 102 m23, Golden Square W1Grade II
- 103 m33, Sackville Street W1Grade II
- 106 m1, SAVILE ROW W1 (See details for further address information)Grade II
- 106 m34 and 35, Sackville Street W1Grade II
- 110 m24, Golden Square W1Grade II
- 113 m36, Sackville Street W1Grade II*
- 114 mThe QuadrantGrade II
- 118 mChesham HouseGrade II
- 120 m2 Lampstandards in From of Number 14Grade II
- 121 mBodley House Chambers B1 to 6, C1 to 6, D1 to 6, E1 to 6, F1 to 3, G1 to 3, H1 to 6, I1 to 6, K1 to 6 and L1 to 6Grade I
- 124 m3, Savile Row W1Grade II*
- 125 m39 AND 40, PICCADILLY W1 (See details for further address information)Grade II
- 127 mHeddon HouseGrade II
- 131 mDenman HouseGrade II
- 134 m4 Bollards,a Pair at Junction With Lower James Street,one Each at Corners of Lower John Street and Warwick StreetGrade II
- 136 mMelbourne House (A1 to A15)Grade I
- 150 mAlbany CourtyardGrade I
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in September 2016, the latest held for this property. The building may have changed since. View the certificate
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1B 5DG
- Received
- 21 Sept 2026
- Validated
- 21 Sept 2026
- Ward
- West End
- Case officer
- Show
- Target decision
- 16 Nov 2026
- Applicant
- Show
- Agent
- Newmark
- Leaseholder
- Show
Decision outlook
Day 18 of the 56-day target. Westminster usually decides extensions by day 55.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
38 neighbours consulted · Last counted 1 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15148439
- Planning Portal ref
- PP-15148439
- Env. assessment
- No
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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33 Glasshouse Street London W1B 5DG
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