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.
-
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)
-
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)
-
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
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26/06251/NMA Awaiting decision
19 Cumberland Street London SW1V 4LS
Amendments to planning permission dated 20th March 2026 (RN:25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.
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26/06201/NMA Awaiting decision
Almack House 28 King Street St James's London SW1Y 6QW
Amendments to planning permission dated 16th April 2026 (RN:26/01487/FULL) for Installation of a mechanical plant at lower ground floor and installation of two grilles to two lower ground floor windows, namely change to approved grille.
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26/06212/NMA Awaiting decision
10 - 11 Lancaster Gate London W2 3LH
Amendment to Condition 12 (Whole Life Carbon) of planning permission dated 19th April 2024 (RN 23/04044/FULL) for Change of use from hotel to residential use (Class C3) with associated internal alterations to create 11 new units and external alterations comprising reconfiguration and recladding of the rear extension and restoration of the existing building. Namely to include additional requirement to evidence and justify where benchmarks cannot be achieved, consider mitigation measures and if none, evidence that all mitigation measures have been exhausted. (Linked with RN 26/06213/ADFULL)
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26/06211/NMA Awaiting decision
15 Portland Place London W1B 1PT
Amendments to planning permission dated 21th July 2022 (RN:22/03521/FULL) for Variation of condition 5 of planning permission dated 11th April 2018 (17/10815/FULL) for the 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 condition 3.
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26/06199/NMA Awaiting decision
33 - 35 Praed Street London W2 1NR
Amendments to planning permission dated 24th Septmebr 2024 (RN:24/03287/FULL) for Use of lower ground and ground floors as supermarket with ancillary bakery (Class E); Use of first, second and third floors as aparthotel with 19 bedrooms (Class C1); Installation of plant machinery and solar thermal panels at roof level, Replacement of windows; and associated external alterations. Namely, Introduction of two shawarma grill machines in the supermarket area at ground floor level; the introduction of a new canopy to provide ventilation for the two shawarma grill machines; and amendments to the ventilation design for the lower ground floor bakery canopy extract.