14-16 Great Portland Street Westminster W1W 8BN
Erection of single storey roof extension, alteration to fenestration (including the installation of replacement windows / doors), creation of terrace at second and third floor level on Margaret Court elevation and at fifth floor level on Great Portland Street elevation, and installation of photovoltaic arrays and three condensing unit at roof level. Use of first, second, third, fourth and enlarged fifth floors as 11 x residential apartments (Class C3).
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Progress
Application details
- Reference
- 14/11629/FULL
- Local authority
- Westminster
- Postcode
- W1W 8BN
- Ward
- WEST END
- Application type
- All Other
- Property type
- Flat
Key dates
- Decided
- 3 Mar 2015
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.
- APARTMENT 1, FITZBOURNE APARTMENTS, 91 NEW CAVENDISH STREET, LONDON, W1W 6XFFlat or maisonette · Leasehold · £2,500,000last month17 Sept 2026
- FOURTH FLOOR FLAT, 134 GREAT PORTLAND STREET, LONDON, W1W 6PXFlat or maisonette · Leasehold · Not a standard market sale · £450,0002 months ago28 Aug 2026
- FLAT 25, GOODWOOD COURT, 54 - 57 DEVONSHIRE STREET, LONDON, W1W 5EFFlat or maisonette · Leasehold · Not a standard market sale · £775,0002 months ago21 Aug 2026
- FLAT 16, 105 HALLAM STREET, LONDON, W1W 5HDFlat or maisonette · Leasehold · Not a standard market sale · £294,0002 months ago11 Aug 2026
- FLAT 41, 49 HALLAM STREET, LONDON, W1W 6JWFlat or maisonette · Leasehold · £1,400,0002 months ago10 Aug 2026
- FLAT 19, GOODWOOD COURT, 54 - 57 DEVONSHIRE STREET, LONDON, W1W 5EFFlat or maisonette · Leasehold · £650,0003 months ago17 Jul 2026
- FLAT 10, 43 - 51 GREAT TITCHFIELD STREET, LONDON, W1W 7PQFlat or maisonette · Leasehold · £1,100,0003 months ago9 Jul 2026
- FLAT 11, GOODWOOD COURT, 54 - 57 DEVONSHIRE STREET, LONDON, W1W 5DZFlat or maisonette · Leasehold · £510,0004 months ago29 Jun 2026
Homes here go for about £1,100,000 — the median of the last 5 market sales in W1W (the wider postcode district), £510,000 to £2,500,000.
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
- 14, 16 Great Portland Street Westminster W1W 8QWPermittedNext door
- WestminsterPermittedNext door
- 14, 16 Great Portland Street Westminster W1W 8QWPermittedNext door
- 14, 16 Great Portland Street Westminster W1W 8QWRefusedNext door
- 14-16 Great Portland Street Westminster W1W 8QWPermittedNext door
- 14, 16 Great Portland Street City Of Westminster W1W 8QWPendingNext door