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Permitted23/02007/FULLSubmitted 2 years agoLoft conversion

1 St James's Square Westminster SW1Y 4PD

Remodelling of the St James's Square and Charles II Street facades of the existing building; two-storey roof extension to provide additional office and plant space; creation of external terraces at seventh and eighth floor levels and photovoltaic panels and green roof at main roof level.

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Progress

Submitted
26 Jul 2024
— completed
Validated
26 Jul 2024
— completed
Consultation
29 Aug 2025
— completed
Target date
25 Oct 2024
— completed
Decided
8 Oct 2025
— completed

Application details

Reference
23/02007/FULL
Local authority
Westminster
Postcode
SW1Y 4PD
Ward
SJW_22
Application type
All Other
Property type
Commercial

Key dates

Submitted
26 Jul 2024
Validated
26 Jul 2024
Comments close
29 Aug 2025
Target decision
25 Oct 2024
Decided
8 Oct 2025

Estimated project value

£7465k–£15550k

Based on the 4,607m² of floor area stated in the application, at inner London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 4,607m²

Recently sold nearby

Nothing on this postcode has changed hands in the last two years. The sales below are for pricing rather than a lead.

Contains HM Land Registry data © Crown copyright and database right 2024. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

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