Planning application
64 - 65 St James's Street London SW1A 1NF
Works: Extension Loft or dormer Demolition Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Amendments to planning permission dated 2 September 2021 (RN: 21/02158/FULL) for: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works namely; increase in height of internal stair core roof; solid hinged access hatch with integrated glazed AOV replaced with sliding glazed access rooflight and separate glazed AOV.
As published by the council, reference 26/00434/NMA
Application record
- Reference
- 26/00434/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Application Permitted
- Received
- 26 Jan 2026
- Validated
- 26 Jan 2026
- Decided
- 13 Mar 2026
- Ward
- St James's
- Decision by
- Delegated Decision
- Postcode
- SW1A 1NF
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2022: 2 approved, 0 refused.
-
26/02528/ADFULL Awaiting decision
64 - 65 St James's Street London SW1A 1NF
Details of how waste is to be stored on site, pursuant to condition 18 of planning permission dated 2nd September 2021 (RN 21/02158/FULL)
-
22/04890/NMA Granted
64 - 65 St James's Street London SW1A 1NF
Amendments to planning permission dated 2 September 2021 (RN: 21/02158/FULL) for 'Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works'. Namely, reduction in height of the internal stair core roof to line through with the height of the lift overruns, removal of the 3rd floor oversailing balcony and associated fixed screen and door to the new infill extension and replacement of existing rear façade windows above Blue Ball Yard entrance within existing openings.
Timeline
Dates from the published record
-
26 Jan 2026
Received by Westminster
-
13 Mar 2026
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Squire and Partners LLP Agent, registered in London
Active · incorporated 2013 · London
20 applications on PlanIndex · across 5 councils · 100% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
27 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 13 March 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 500 metres
-
64 - 65 St James's Street London SW1A 1NF
Amendments to planning permission dated 2 September 2021 (RN: 21/02158/FULL) for 'Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works'. Namely, reduction in height of the internal stair core roof to line through with the height of the lift overruns, removal of the 3rd floor oversailing balcony and associated fixed screen and door to the new infill extension and replacement of existing rear façade windows above Blue Ball Yard entrance within existing openings.
Granted Amendments Extension Loft or dormer +2 27 docs -
64 - 65 St James's Street London SW1A 1NF
87% historically approved · decision due ~12 Jun
Details of how waste is to be stored on site, pursuant to condition 18 of planning permission dated 2nd September 2021 (RN 21/02158/FULL)
Awaiting decision Full applications 3 docs -
Target House 66 St James's Street London SW1A 1NE
Installation of three air conditioning units and louvre acoustic screen at roof level.
Granted Full applications 6 docs -
Target House 66 St James's Street London SW1A 1NE
Display of externally illuminated projecting sign.
Granted Advertising 4 docs -
Target House 66 St James's Street London SW1A 1NE
Replacement of existing roof mounted air conditioning equipment.
Granted Full applications 10 docs -
Target House 66 St James's Street London SW1A 1NE
Details of acoustic screen and relationship to parapet wall pursuant to Condition 7 of planning permission dated 28 January 2008 (RN: 07/09938).
Granted Full applications 3 docs
Other amendment applications
In Westminster
-
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.
-
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.
-
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)
-
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.
-
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.