Westminster
Westminster/26/00434/NMA
64 - 65 St James's Street London SW1A 1NF
- Reference
- Westminster/26/00434/NMA
- Authority
- Westminster
- Application type
- Non-material amendment
- Address
- 64 - 65 St James's Street London SW1A 1NF
- Postcode
- SW1A 1NF
- Status
- Decided
- Decision
- Application Permitted
- Received
- 26 Jan 2026
- Validated
- 26 Jan 2026
- Started
- 26 Jan 2026
- Decided
- 13 Mar 2026
- Source council
- Westminster
- Council source record
- View public record
- Public data licence
- Open Government Licence v3.0
- Record updated
- 11 Aug 2026
- SEO index generated
- 12 Aug 2026
Location
Approximate location
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.
Key dates
- Received 26 Jan 2026
- Validated 26 Jan 2026
- Started 26 Jan 2026
- Decided 13 Mar 2026
Planning history / related applications
No related planning applications have been identified in the current public OGL dataset.
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- Ownership & title Registered owner and title from HM Land Registry.
- Viability & build potential Site scoring and development upside.
- Constraints Flood risk, green belt, conservation areas and designations.
- Approval signal Planning risk and approval-likelihood analysis.
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Source: public planning application data from Westminster, reused under the Open Government Licence v3.0. View the council source record. Council documents and drawings are not republished on plotEdge.