23 Grafton Street Westminster W1S 4EY
Phased development including retention of rear basement roof slab (previously proposed for demolition and replacement), infilling of void creating an internal lightwell and the creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations.
Tracking, tags and letters are part of the paid plan. See what it costs. Searching and reading any record stays free.
Progress
Application details
- Reference
- 26/00554/LBC
- Local authority
- Westminster
- Postcode
- W1S 4EY
- Ward
- WEW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 30 Jan 2026
- Validated
- 30 Jan 2026
- Comments close
- 24 Mar 2026
- Target decision
- 27 Mar 2026
Estimated project value
£37k–£100k
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: Checkatrade 2026 loft conversion cost guide.
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 · £62,000,0004 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 · £195,0008 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
- 23 Grafton Street Westminster W1S 4EYPermittedNext door
- 23 Grafton Street Westminster W1S 4EYPermittedNext door
- 23 Grafton Street Westminster W1S 4EYPendingNext door
- 23 Grafton Street Westminster W1S 4EYPermittedNext door
- 23 Grafton Street Westminster W1S 4EYPermittedNext door
- 23 Grafton Street Westminster W1S 4EYPermittedNext door