Planning application
20 Manchester Square London W1U 3PZ
Works: Extension Demolition Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Amendments to planning permission dated 04 September 2020 (RN: 20/03854/FULL) for, 'Demolition and replacement of existing fourth floor, demolition of existing plant room, and erection of a single storey roof extension at fifth floor and rear extension at second to fifth floor levels in connection with existing office (Class B1) use, provision of new main office entrance, flexible use of part ground and basement floor for either retail or office use (Class A1/B1), creation of roof terrace at fifth floor level, provision of cycle parking spaces and facilities, roof plant and associated external alterations, including replacement windows'; NAMELY, to reconfigure the basement level shower and cycle parking facilities.
As published by the council, reference 25/08754/NMA
Application record
- Reference
- 25/08754/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 2 Dec 2025
- Validated
- 2 Dec 2025
- Decided
- 13 Jan 2026
- Ward
- Marylebone
- Decision by
- Delegated Decision
- Postcode
- W1U 3PZ
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2022: 4 approved, 0 refused.
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23/05690/ADFULL Granted
20 Manchester Square London W1U 3PZ
Details of Bio-Diversity Management Plan pursuant to Condition 24 of planning permission dated 04 September 2020 RN: 20/03854/FULL)
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23/01041/ADFULL Granted
20 Manchester Square London W1U 3PZ
Detailed design of roof level flues pursuant to Condition 8 of planning permission dated 4 September 2020 (RN:20/03854/FULL)
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22/04020/ADFULL Granted
20 Manchester Square London W1U 3PZ
Details of pruning works required to the Council's own trees pursuant to condition 23 of planning permission dated 4th September 2020 (RN: 20/03854/FULL)
Timeline
Dates from the published record
-
2 Dec 2025
Received by Westminster
-
13 Jan 2026
Decision issued: Application Permitted
-
20 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
3 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 13 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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
-
26 Manchester Square London W1U 3PZ
Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.
Granted Advertising 3 docs -
26 Manchester Square London W1U 3PZ
Removal of internal partitions and addition of new lightweight partitions and doors. (Site includes No. 1 Manchester Square)
Granted Heritage and listed buildings 11 docs -
20 Manchester Square London W1U 3PZ
Detailed design of roof level flues pursuant to Condition 8 of planning permission dated 4 September 2020 (RN:20/03854/FULL)
Granted Full applications 14 docs -
20 Manchester Square London W1U 3PZ
Details of pruning works required to the Council's own trees pursuant to condition 23 of planning permission dated 4th September 2020 (RN: 20/03854/FULL)
Granted Full applications Trees 12 docs -
1 Manchester Square London W1U 3PZ
Display for a temporary period of six months of a non-illuminated sign attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.
Granted Advertising 6 docs -
26 Manchester Square London W1U 3PZ
Creation of internal doorway between 26 Manchester Square and 8 Hinde Street.
Refused Heritage and listed buildings 6 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.
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26/07438/NMA Awaiting decision
29 - 31 Hill Street London W1J 5LS
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.
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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.
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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.