Sanctuary Buildings, 20 Great Smith Street Westminster SW1P 3BT
Demolition of roof plant room and roof light structure; construction of office (B1) floor at level 9 with plant above; remodelling of mansard at level 8; installation of window openings to the Abbey Orchard Street elevation; alterations to Great Smith Street elevation at ground floor level; change of use to cafe (Class A3) at part ground floor level; and associated internal alterations. Provision of a terrace at sixth floor level fronting Great Smith Street and at ninth floor level fronting Great Smith Street and Abbey Orchard Street [Site includes Sanctuary Buildings, Orchard House and Park House].
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Progress
Application details
- Reference
- 17/09875/FULL
- Local authority
- Westminster
- Postcode
- SW1P 3BT
- Ward
- ST. JAMES'S
- Application type
- All Other
- Property type
- Commercial
Key dates
- Decided
- 13 Jun 2018
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.
- 25 VINCENT SQUARE, LONDON, SW1P 2NJTerraced · £2,450,0002 months ago24 Aug 2026
- FLAT 8, ASTRAL HOUSE REGENCY PLACE, LONDON, SW1P 2EAFlat or maisonette · Leasehold · £361,5002 months ago7 Aug 2026
- FLAT 83, TOTHILL HOUSE PAGE STREET, LONDON, SW1P 4DJFlat or maisonette · Leasehold · £540,0002 months ago30 Jul 2026
- FLAT 8.03, ST. JOHNS BUILDING, 79 MARSHAM STREET, LONDON, SW1P 4SBFlat or maisonette · Leasehold · £925,0002 months ago29 Jul 2026
- FLAT 12A, ST GEORGES MANSIONS CAUSTON STREET, LONDON, SW1P 4RZFlat or maisonette · Leasehold · £770,0003 months ago17 Jul 2026
- FLAT 43, TURNER HOUSE ERASMUS STREET, LONDON, SW1P 4DZFlat or maisonette · Leasehold · £415,0003 months ago17 Jul 2026
- FLAT 2, EVELYN MANSIONS CARLISLE PLACE, LONDON, SW1P 1NHFlat or maisonette · Leasehold · £1,100,0003 months ago17 Jul 2026
- FLAT 36, 1 AMBROSDEN AVENUE, LONDON, SW1P 1QQFlat or maisonette · Leasehold · £295,0003 months ago16 Jul 2026
Homes here go for about £655,000 — the median of the last 8 market sales in SW1P (the wider postcode district), £295,000 to £2,450,000.
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
- 20 Great Smith Street Westminster SW1P 3BTPermittedNext door
- 20 Great Smith Street Westminster SW1P 3BTPermittedNext door
- 20 Great Smith Street Westminster SW1P 3BTWithdrawnNext door
- 20 Great Smith Street Westminster SW1P 3BTPermittedNext door
- 20 Great Smith Street Westminster SW1P 3BTPermittedNext door
- 20 Great Smith Street Westminster SW1P 3BTPermittedNext door