33 St James's Square Westminster SW1Y 4JS
Amendment to lift overrun to provide level access to seventh floor in line with building and fire regulation requirements; remodelling of the roofscape, including an amended set back plant enclosure; introduction of a secondary escape stair as required by fire regulations; omission of sixth floor east elevation roof terrace; minor amendments to east elevation; introduction of seventh floor plant well; internal reconfiguration of layouts and core. (Amendments to listed building consent dated 30 October 2020 RN: 20/03223/LBC for Partial demolition and reconstruction of enlarged rear extension with additional storey; formation of terraces at ground, fourth, fifth and sixth floor levels; excavation to extend existing basement level; installation of plant machinery; internal alterations including installation of new grand stair; and associated external alterations in connection with increase in office floorspace (Class B1).
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Progress
Application details
- Reference
- 26/02705/LBC
- Local authority
- Westminster
- Postcode
- SW1Y 4JS
- Ward
- SJW_22
- Application type
- All Other
- Property type
- Commercial
Key dates
- Submitted
- 29 Apr 2026
- Validated
- 29 Apr 2026
- Comments close
- 1 Jun 2026
- Target decision
- 24 Jun 2026
- Decided
- 11 Sept 2026
Estimated project value
£41k–£75k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: MyJobQuote / Checkatrade 2026, ~20m² at £1,800-£3,000/m².
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- 33 ST JAMES'S SQUARE, LONDON, SW1Y 4JSOther · Not a standard market sale · £93,000,0006 months ago1 Apr 2026
Contains HM Land Registry data © Crown copyright and database right 2026. 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.
Recorded changes
- 12 Sept 2026: Approved
- 11 Sept 2026: The proposal was amended
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