Planning application
25 - 27 St George Street London W1S 1FS
Works: Extension 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 02 May 2025 (RN: 25/01410/FULL) for alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St George Street side of the building including railings; new cycle parking facilities and associated works; NAMELY the provision of two areas for planters on the front St George Street elevation; amending the location of lighting fixtures to entrance; addition of address signage at ground floor level main entrance; amending level 06 and level 07 window sizes on both St George Street and Masons Arms Mews; and amending the wording of Condition 5 to allow the doors on St George Street to open outwards onto pavement for fire safety purposes.
As published by the council, reference 26/03413/NMA
Application record
- Reference
- 26/03413/NMA
- Type
- Non-material amendments
- Status
- Pending
- Received
- 22 May 2026
- Validated
- 22 May 2026
- Ward
- West End
- Postcode
- W1S 1FS
Site history
Applications at this address on the Westminster register
This site has had 12 applications since 2025: 6 approved, 0 refused.
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26/05866/FULL Awaiting decision
25 - 27 St George Street London W1S 1FS
Installation of screened plant enclosure and revised roof equipment layout including associated works.
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26/01754/ADFULL Awaiting decision
25 - 27 St George Street London W1S 1FS
Detailed drawings and a bio-diversity management plan in relation to the green roof at main roof level to include construction method, layout, species and maintenance regime pursuant to condition 11 of planning permission dated 11th August 2025 (RN 25/01410/FULL)
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26/00963/ADFULL Awaiting decision
25 - 27 St George Street London W1S 1FS
Details of supplementary acoustic report pursuant to Condition 9 of planning permission dated 11/08/2025 (RN: 25/01410/FULL)
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26/00885/NMA Awaiting decision
25 - 27 St George Street London W1S 1FS
Amendments to planning permission dated 11 August 2025 (RN: 25/01410/FULL) for Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St. George Street side of the building including railings; new cycle parking facilities and associated works. NAMELY, to amend the approved position of the balustrade of the approved roof terrace at seventh floor level to increase terrace area
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25/09139/ADFULL Granted
25 - 27 St George Street London W1S 1FS
Details of samples of facing materials pursuant to Condition 17 of planning permission dated 11 August 2025 (RN: 25/01410/FULL)
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25/08990/ADFULL Granted
25 - 27 St George Street London W1S 1FS
Details of balustrade to the lightwell and to the seventh-floor terrace pursuant to conditon 15 (a & b) of planning permission dated 11 August 2025 (RN: 25/01410/FULL)
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25/08147/ADFULL Awaiting decision
25 - 27 St George Street London W1S 1FS
Detailed drawings of all new windows and doors pursuant to condition 15 (C) of planning permission dated 11th August 2025 (RN:25/01410/FULL )
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25/07446/NMA Granted
25 - 27 St George Street London W1S 1FS
Amendments to planning permission dated 11th August 2025 (RN 25/01410/FULL) for the Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St. George Street side of the building including railings; new cycle parking facilities and associated works. NAMELY, to increase the roof height by 300mm; bring the building line forward by 993mm at seventh floor level; and insertion of additional louvres at the rear of the building at sixth floor level.
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25/06488/ADFULL Granted
25 - 27 St George Street London W1S 1FS
Details of Code of Construction Practice Appendix A checklist pursuant to Condition 18 of planning permission dated 11th August 2025 (RN:25/01410/FULL)
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25/06207/ADFULL Granted
25 - 27 St George Street London W1S 1FS
Details of a scheme of public art pursuant to condition 14 of planning permission dated 11th August 2025 (RN: 25/01410/FULL)
Timeline
Dates from the published record
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22 May 2026
Received by Westminster
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
Decision expected by 17 July 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 66 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Newmark LLP Agent
921 applications on PlanIndex · across 40 councils · 97% granted
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
15 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 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 54 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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25 - 27 St George Street London W1S 1FS
Amendments to planning permission dated 11th August 2025 (RN:25/01410/FULL) for Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St. George Street side of the building including railings; new cycle parking facilities and associated works; NAMELY, amendments to the design of the main office entrance.
Granted Amendments Extension 11 docs -
25 - 27 St George Street London W1S 1FS
Amendments to planning permission dated 11th August 2025 (RN 25/01410/FULL) for the Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St. George Street side of the building including railings; new cycle parking facilities and associated works. NAMELY, to increase the roof height by 300mm; bring the building line forward by 993mm at seventh floor level; and insertion of additional louvres at the rear of the building at sixth floor level.
Granted Amendments Extension 40 docs -
38 Maddox Street London W1S 1PY
Display of externally illuminated hanging sign measuring 0.9m X 1.35m, externally illuminated fascia sign measuring 3.5m X 0.3m, internally illuminated fascia sign measuring 0.377m X 0.5m, non illuminated fascia sign measuring 1.275m X 0.63m, 0.4m X 1.1m and 0.4m X 1.3m
Granted Advertising 9 docs -
25 - 27 St George Street London W1S 1FS
Details of a scheme of public art pursuant to condition 14 of planning permission dated 11th August 2025 (RN: 25/01410/FULL)
Granted Full applications 11 docs -
25 - 27 St George Street London W1S 1FS
93% historically approved · decision due ~9 Apr
Amendments to planning permission dated 11 August 2025 (RN: 25/01410/FULL) for Alterations to the elevations on St. George St and Masons Arms Mews; removal of the car lift to the basement parking from Masons Arms Mews; extensions at fourth, fifth, sixth and seventh floor levels for use as office accommodation (Class E) with new terraces at fourth, fifth, sixth and seventh floor levels. Installation of PV panels and green roof at main roof level; planting on the terraces; new external stair in the lightwell on the southern side of the building; creation of a new lightwell on the St. George Street side of the building including railings; new cycle parking facilities and associated works. NAMELY, to amend the approved position of the balustrade of the approved roof terrace at seventh floor level to increase terrace area
Awaiting decision Amendments Extension 23 docs -
25 - 27 St George Street London W1S 1FS
87% historically approved · decision due ~2 Jan
Detailed drawings of all new windows and doors pursuant to condition 15 (C) of planning permission dated 11th August 2025 (RN:25/01410/FULL )
Awaiting decision Full applications Windows or glazing 18 docs
Other amendment applications
In Westminster
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26/06232/NMA Awaiting decision
37 Trevor Place London SW7 1LE
Amendments to planning permission dated 17th July 2026 (RN 26/03030/FULL) for the Alterations including enlargement of louvres and installation of new plant in basement; landscaping of roof terrace; second floor windows replaced with door sets; partial demolition at ground and first floor levels to create new lightwell and landscaped courtyard. NAMELY, addition of a free-standing sauna to the second-floor roof terrace.
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26/06256/NMA Awaiting decision
Queens Court Queensway London W2 4QN
Amendments to planning permission dated 21st May 2026 (RN:25/05013/FULL) for Variation of conditions 1, 3, 8, 9 and 17 of planning permission dated 11th May 2022 (RN 18/09765/FULL) for the Change of use of rear part of Queensway Market to Retail, Financial and Professional services, Office and Restaurant (within Class E) use and 5 residential units facing Princes Court, reconfiguration of retail units along Queensway including introduction of Retail uses at Nos.23 and 33 (current entrances to Queensway Market) and use of Nos.25 and 41-43 Queensway as Restaurant uses, installation of new shopfronts to Nos.23 to 43 Queensway 23-43, erection of infill extension to rear at ground floor level, erection of two new pavilion structures for Retail use and associated new hard and soft landscaping on land between Queens Court and Princes Court, installation of green roofs, rooflights and mechanical plant within enclosures to first floor level roofs between projecting rear wings of Queens Court installation of kitchen extract ducts to rear elevations, and associated cycle parking, waste storage, plant and other ancillary alterations ('Application 2'). Namely, to vary the hours of operation for the refrigeration plant controlled by condition 6.
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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)