25, 27 St George Street Westminster 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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Progress
Application details
- Reference
- 25/07446/NMA
- Local authority
- Westminster
- Postcode
- W1S 1FS
- Ward
- WEW_22
- Application type
- All Other
- Property type
- Commercial
Key dates
- Submitted
- 15 Oct 2025
- Validated
- 15 Oct 2025
- Comments close
- 10 Dec 2025
- Target decision
- 12 Nov 2025
- Decided
- 21 Jan 2026
Estimated project value
£135k–£340k
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: trade estimate.
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.
- 1 SAVILE ROW, LONDON, W1S 3JROther · Not a standard market sale · £31,000,0002 months ago24 Jun 2026
- 170 NEW BOND STREET, LONDON, W1S 4RBOther · Leasehold · Not a standard market sale · £62,000,0003 months ago14 May 2026
- 41 ALBEMARLE STREET, LONDON, W1S 4BFOther · Not a standard market sale · £14,025,0004 months ago7 May 2026
- 9 NEW BURLINGTON PLACE, LONDON, W1S 2HUFlat or maisonette · Leasehold · £1,957,0004 months ago1 May 2026
- 13 HANOVER SQUARE, LONDON, W1S 1HLOther · Not a standard market sale · £65,000,0005 months ago27 Mar 2026
- 42 CONDUIT STREET, LONDON, W1S 2YHOther · Not a standard market sale · £15,240,0007 months ago11 Feb 2026
- FLAT 1, 33 DOVER STREET, LONDON, W1S 4NFFlat or maisonette · Leasehold · Not a standard market sale · £1,650,0007 months ago4 Feb 2026
- FIFTH AND SIXTH FLOORS SAVILE ROW, LONDON, W1S 2EROther · Leasehold · Not a standard market sale · £195,0007 months ago15 Jan 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.
Nearby applications
- 25, 27 St George Street Westminster W1S 1FSPendingNext door
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- 25, 27 St George Street Westminster W1S 1FSPermittedNext door
- 25, 27 St George Street Westminster W1S 1FSPermittedNext door